diff --git a/app/MindWork AI Studio/Tools/Rust/FileTypes.cs b/app/MindWork AI Studio/Tools/Rust/FileTypes.cs
index f6d982e0..196075e1 100644
--- a/app/MindWork AI Studio/Tools/Rust/FileTypes.cs	
+++ b/app/MindWork AI Studio/Tools/Rust/FileTypes.cs	
@@ -48,7 +48,7 @@ public static class FileTypes
     public static readonly FileTypeFilter MS_WORD     = FileTypeFilter.Leaf("Microsoft Word", "docx");
     public static readonly FileTypeFilter WORD        = FileTypeFilter.Composite("Word", ["odt"], MS_WORD);
     public static readonly FileTypeFilter EXCEL       = FileTypeFilter.Leaf("Excel", "xls", "xlsx");
-    public static readonly FileTypeFilter POWER_POINT = FileTypeFilter.Leaf("PowerPoint", "ppt", "pptx");
+    public static readonly FileTypeFilter POWER_POINT = FileTypeFilter.Leaf("PowerPoint", "ppt", "pptx", "odp");
     public static readonly FileTypeFilter MAIL        = FileTypeFilter.Leaf(TB("Mail"), "eml", "msg", "mbox");
     public static readonly FileTypeFilter LATEX       = FileTypeFilter.Leaf("LaTeX", "tex", "bib", "sty", "cls", "log");
 
@@ -128,4 +128,4 @@ public static class FileTypes
         
         return false;
     }
-}
\ No newline at end of file
+}
diff --git a/app/MindWork AI Studio/wwwroot/changelog/v26.7.3.md b/app/MindWork AI Studio/wwwroot/changelog/v26.7.3.md
index 07571aeb..213c2394 100644
--- a/app/MindWork AI Studio/wwwroot/changelog/v26.7.3.md	
+++ b/app/MindWork AI Studio/wwwroot/changelog/v26.7.3.md	
@@ -1,11 +1,13 @@
 # v26.7.3, build 248 (2026-07-19 20:50 UTC)
 - Added support for OpenAI GPT-5.6 Sol, Terra, and Luna; Anthropic Claude Fable 5 and Mythos 5; and Google Gemini 3 Flash, Gemini 3.1 Flash-Lite, Gemini 3.1 Pro, and Gemini 3.5 Flash.
+- Added support for OpenDocument presentations (`.odp`) when attaching and reading presentation files.
 - Added a log viewer assistant that shows AI Studio log files in a read-only view with search, log filters, highlighting, and auto-refresh.
 - Added audio and video transcription for chats and assistants. AI Studio now prepares supported media locally, sends only normalized audio to the configured transcription provider, and attaches the resulting transcript instead of the original media.
 - Added AI-assisted editing and revision for assistants created with the Assistant Builder. Thanks, Nils Kruthoff (`nilskruthoff`), for this contribution.
 - Added options to view and edit the code of AI-generated assistants and to delete your own generated assistants. Thanks, Nils Kruthoff (`nilskruthoff`), for this contribution.
 - Added enterprise configuration options to hide the last changelog and vision panels on the welcome page. Thanks, Dominic Neuburg (`donework`), for the contribution.
 - Improved the "My Tasks Assistant": you can now provide one or more documents in addition to text or use documents alone when asking to identify tasks.
+- Improved presentation imports so AI Studio can include speaker notes, slide comments, and presentation metadata in the extracted content.
 - Improved update guidance for Flatpak installations and added an enterprise option that lets organizations manage updates entirely through their IT department.
 - Improved secure API-key storage diagnostics on Linux. AI Studio now provides specific guidance when the default password collection is missing or locked, a password-manager prompt is dismissed, or no compatible Secret Service is available.
 - Improved the file dialogs to prevent opening multiple times when you click "Open" or "Save" multiple times in a row.
diff --git a/runtime/Cargo.lock b/runtime/Cargo.lock
index 69cad297..93e03d05 100644
--- a/runtime/Cargo.lock
+++ b/runtime/Cargo.lock
@@ -74,6 +74,15 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "aligned"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ee4508988c62edf04abd8d92897fca0c2995d907ce1dfeaf369dac3716a40685"
+dependencies = [
+ "as-slice",
+]
+
 [[package]]
 name = "aligned-vec"
 version = "0.6.4"
@@ -149,7 +158,7 @@ version = "1.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "40c48f72fd53cd289104fc64099abca73db4166ad86ea0b4341abe65af83dadc"
 dependencies = [
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -160,7 +169,7 @@ checksum = "291e6a250ff86cd4a820112fb8898808a366d8f9f58ce16d1f538353ad55747d"
 dependencies = [
  "anstyle",
  "once_cell_polyfill",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -205,7 +214,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0348a1c054491f4bfe6ab86a7b6ab1e44e45d899005de92f58b3df180b36ddaf"
 dependencies = [
  "clipboard-win",
- "image 0.25.2",
+ "image",
  "log",
  "objc2 0.6.4",
  "objc2-app-kit",
@@ -228,6 +237,17 @@ dependencies = [
  "rustversion",
 ]
 
+[[package]]
+name = "arg_enum_proc_macro"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0ae92a5119aa49cdbcf6b9f893fe4e1d98b04ccbf82ee0584ad948a44a734dea"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
+
 [[package]]
 name = "arrayvec"
 version = "0.4.12"
@@ -243,6 +263,15 @@ version = "0.7.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7c02d123df017efcdfbd739ef81735b36c5ba83ec3c59c80a9d7ecc718f92e50"
 
+[[package]]
+name = "as-slice"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "516b6b4f0e40d50dcda9365d53964ec74560ad4284da2e7fc97122cd83174516"
+dependencies = [
+ "stable_deref_trait",
+]
+
 [[package]]
 name = "ashpd"
 version = "0.13.12"
@@ -548,6 +577,49 @@ version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0c4b4d0bd25bd0b74681c0ad21497610ce1b7c91b1022cd21c80c6fbdd9476b0"
 
+[[package]]
+name = "av-scenechange"
+version = "0.14.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0f321d77c20e19b92c39e7471cf986812cbb46659d2af674adc4331ef3f18394"
+dependencies = [
+ "aligned",
+ "anyhow",
+ "arg_enum_proc_macro",
+ "arrayvec 0.7.6",
+ "log",
+ "num-rational",
+ "num-traits",
+ "pastey",
+ "rayon",
+ "thiserror 2.0.18",
+ "v_frame",
+ "y4m",
+]
+
+[[package]]
+name = "av1-grain"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8cfddb07216410377231960af4fcab838eaa12e013417781b78bd95ee22077f8"
+dependencies = [
+ "anyhow",
+ "arrayvec 0.7.6",
+ "log",
+ "nom 8.0.0",
+ "num-rational",
+ "v_frame",
+]
+
+[[package]]
+name = "avif-serialize"
+version = "0.8.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e7178fe5f7d460b13895ebb9dcb28a3a6216d2df2574a0806cb51b555d297f38"
+dependencies = [
+ "arrayvec 0.7.6",
+]
+
 [[package]]
 name = "aws-lc-rs"
 version = "1.16.2"
@@ -775,6 +847,15 @@ dependencies = [
  "crunchy",
 ]
 
+[[package]]
+name = "bitstream-io"
+version = "4.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7eff00be299a18769011411c9def0d827e8f2d7bf0c3dbf53633147a8867fd1f"
+dependencies = [
+ "no_std_io2",
+]
+
 [[package]]
 name = "bitvec"
 version = "1.0.1"
@@ -813,6 +894,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cdd35008169921d80bc60d3d0ab416eecb028c4cd653352907921d95084790be"
 dependencies = [
  "hybrid-array",
+ "zeroize",
 ]
 
 [[package]]
@@ -902,6 +984,12 @@ dependencies = [
  "tinyvec",
 ]
 
+[[package]]
+name = "built"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c0e531d93d39c34eef561e929e8a7f86d77a5af08aac4f6d6e39976c51858e9"
+
 [[package]]
 name = "bumpalo"
 version = "3.20.3"
@@ -951,21 +1039,11 @@ dependencies = [
 
 [[package]]
 name = "bzip2"
-version = "0.5.2"
+version = "0.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "49ecfb22d906f800d4fe833b6282cf4dc1c298f5057ca0b5445e5c209735ca47"
+checksum = "f3a53fac24f34a81bc9954b5d6cfce0c21e18ec6959f44f56e8e90e4bb7c346c"
 dependencies = [
- "bzip2-sys",
-]
-
-[[package]]
-name = "bzip2-sys"
-version = "0.1.13+1.0.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "225bff33b2141874fe80d71e07d6eec4f85c5c216453dd96388240f96e1acc14"
-dependencies = [
- "cc",
- "pkg-config",
+ "libbz2-rs-sys",
 ]
 
 [[package]]
@@ -1364,9 +1442,9 @@ checksum = "245097e9a4535ee1e3e3931fcfcd55a796a44c643e8596ff6566d68f09b87bbc"
 
 [[package]]
 name = "constant_time_eq"
-version = "0.3.1"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7c74b8349d32d297c9134b8c88677813a227df8f779daa29bfc29c183fe3dca6"
+checksum = "3d52eff69cd5e647efe296129160853a42795992097e8af39800e1060caeea9b"
 
 [[package]]
 name = "cookie"
@@ -1455,21 +1533,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "crc"
-version = "3.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9710d3b3739c2e349eb44fe848ad0b7c8cb1e42bd87ee49371df2f7acaf3e675"
-dependencies = [
- "crc-catalog",
-]
-
-[[package]]
-name = "crc-catalog"
-version = "2.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "19d374276b40fb8bbdee95aef7c7fa6b5316ec764510eb64b8dd0e2ed0d7e7f5"
-
 [[package]]
 name = "crc32c"
 version = "0.6.8"
@@ -1764,9 +1827,9 @@ checksum = "85d3cef41d236720ed453e102153a53e4cc3d2fde848c0078a50cf249e8e3e5b"
 
 [[package]]
 name = "deflate64"
-version = "0.1.9"
+version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da692b8d1080ea3045efaab14434d40468c3d8657e42abddfffca87b428f4c1b"
+checksum = "ac6b926516df9c60bfa16e107b21086399f8285a44ca9711344b9e553c5146e2"
 
 [[package]]
 name = "der-parser"
@@ -1845,6 +1908,7 @@ dependencies = [
  "const-oid",
  "crypto-common 0.2.2",
  "ctutils",
+ "zeroize",
 ]
 
 [[package]]
@@ -1865,7 +1929,7 @@ dependencies = [
  "libc",
  "option-ext",
  "redox_users",
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -2197,7 +2261,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "39cab71617ae0d63f51a36d69f866391735b51691dbda63cf6f96d042b63efeb"
 dependencies = [
  "libc",
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -2229,14 +2293,16 @@ dependencies = [
 
 [[package]]
 name = "exr"
-version = "1.73.0"
+version = "1.74.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f83197f59927b46c04a183a619b7c29df34e63e63c7869320862268c0ef687e0"
+checksum = "711fe42c9964295e01ee3fba3f9fe0e1d24b98886950d68efe81b1c76e21adf3"
 dependencies = [
  "bit_field",
  "half 2.7.1",
  "lebe",
  "miniz_oxide 0.8.5",
+ "num-complex",
+ "pulp",
  "rayon-core",
  "smallvec",
  "zune-inflate",
@@ -2260,6 +2326,12 @@ version = "2.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "37909eebbb50d72f9059c3b6d82c0463f2ff062c9e95845c43a6c9c0355411be"
 
+[[package]]
+name = "fax"
+version = "0.2.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "caf1079563223d5d59d83c85886a56e586cfd5c1a26292e971a0fa266531ac5a"
+
 [[package]]
 name = "fdeflate"
 version = "0.3.4"
@@ -2739,18 +2811,20 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0de51e6874e94e7bf76d726fc5d13ba782deca734ff60d5bb2fb2607c7406555"
 dependencies = [
  "cfg-if",
+ "js-sys",
  "libc",
  "r-efi",
  "rand_core 0.10.0",
  "wasip2",
  "wasip3",
+ "wasm-bindgen",
 ]
 
 [[package]]
 name = "gif"
-version = "0.13.1"
+version = "0.14.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3fb2d69b19215e18bb912fa30f7ce15846e301408695e44e0ef719f1da9e19f2"
+checksum = "ee8cfcc411d9adbbaba82fb72661cc1bcca13e8bba98b364e62b2dba8f960159"
 dependencies = [
  "color_quant",
  "weezl",
@@ -3489,37 +3563,44 @@ dependencies = [
 
 [[package]]
 name = "image"
-version = "0.24.9"
+version = "0.25.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5690139d2f55868e080017335e4b94cb7414274c74f1669c84fb5feba2c9f69d"
-dependencies = [
- "bytemuck",
- "byteorder",
- "color_quant",
- "exr",
- "gif",
- "jpeg-decoder",
- "num-traits",
- "png 0.17.13",
- "qoi",
- "tiff",
-]
-
-[[package]]
-name = "image"
-version = "0.25.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "99314c8a2152b8ddb211f924cdae532d8c5e4c8bb54728e12fff1b0cd5963a10"
+checksum = "85ab80394333c02fe689eaf900ab500fbd0c2213da414687ebf995a65d5a6104"
 dependencies = [
  "bytemuck",
  "byteorder-lite",
+ "color_quant",
+ "exr",
+ "gif",
+ "image-webp",
+ "moxcms",
  "num-traits",
- "png 0.17.13",
+ "png 0.18.1",
+ "qoi",
+ "ravif",
+ "rayon",
+ "rgb",
  "tiff",
  "zune-core",
  "zune-jpeg",
 ]
 
+[[package]]
+name = "image-webp"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "525e9ff3e1a4be2fbea1fdf0e98686a6d98b4d8f937e1bf7402245af1909e8c3"
+dependencies = [
+ "byteorder-lite",
+ "quick-error",
+]
+
+[[package]]
+name = "imgref"
+version = "1.12.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "89194689a993ab15268672e99e7b0e19da2da3268ac682e8f02d29d4d1434cd7"
+
 [[package]]
 name = "include-flate"
 version = "0.3.3"
@@ -3625,6 +3706,17 @@ version = "4.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "14c00403deb17c3221a1fe4fb571b9ed0370b3dcd116553c77fa294a3d918699"
 
+[[package]]
+name = "interpolate_name"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c34819042dc3d3971c46c2190835914dfbe0c3c13f61449b2997f4e9722dfa60"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
+
 [[package]]
 name = "io-uring"
 version = "0.7.12"
@@ -3804,15 +3896,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "jpeg-decoder"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f5d4a7da358eff58addd2877a45865158f0d78c911d43a5784ceb7bbf52833b0"
-dependencies = [
- "rayon",
-]
-
 [[package]]
 name = "js-sys"
 version = "0.3.97"
@@ -3909,6 +3992,12 @@ dependencies = [
  "once_cell",
 ]
 
+[[package]]
+name = "libbz2-rs-sys"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34b357333733e8260735ba5894eb928c02ecc69c78715f01a8019e7fa7f2db4c"
+
 [[package]]
 name = "libc"
 version = "0.2.186"
@@ -3948,6 +4037,16 @@ dependencies = [
  "rle-decode-fast",
 ]
 
+[[package]]
+name = "libfuzzer-sys"
+version = "0.4.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a9fd2f41a1cba099f79a0b6b6c35656cf7c03351a7bae8ff0f28f25270f929d2"
+dependencies = [
+ "arbitrary",
+ "cc",
+]
+
 [[package]]
 name = "libloading"
 version = "0.7.4"
@@ -3965,7 +4064,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fc2f4eb4bc735547cfed7c0a4922cbd04a4655978c09b54f1f7b228750664c34"
 dependencies = [
  "cfg-if",
- "windows-targets 0.48.5",
+ "windows-targets 0.52.6",
 ]
 
 [[package]]
@@ -4017,6 +4116,15 @@ version = "0.4.33"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0ceec5bc11778974d1bcb055b18002eba7f4b3518b6a0081b3af5f21666da9ad"
 
+[[package]]
+name = "loop9"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0fae87c125b03c1d2c0150c90365d7d6bcc53fb73a9acaef207d2d065860f062"
+dependencies = [
+ "imgref",
+]
+
 [[package]]
 name = "lru-slab"
 version = "0.1.2"
@@ -4030,24 +4138,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7ef0d4ed8669f8f8826eb00dc878084aa8f253506c4fd5e8f58f5bce72ddb97e"
 
 [[package]]
-name = "lzma-rs"
-version = "0.3.0"
+name = "lzma-rust2"
+version = "0.16.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "297e814c836ae64db86b36cf2a557ba54368d03f6afcd7d947c266692f71115e"
+checksum = "ca93e534d1142d1d0dcca6d25fe302508a5dfb40b302802904577725ea0b695b"
 dependencies = [
- "byteorder",
- "crc",
-]
-
-[[package]]
-name = "lzma-sys"
-version = "0.1.20"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5fda04ab3764e6cde78b9974eec4f779acaba7c4e84b36eca3cf77c581b85d27"
-dependencies = [
- "cc",
- "libc",
- "pkg-config",
+ "sha2 0.11.0",
 ]
 
 [[package]]
@@ -4099,6 +4195,16 @@ version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4facc753ae494aeb6e3c22f839b158aebd4f9270f55cd3c79906c45476c47ab4"
 
+[[package]]
+name = "maybe-rayon"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ea1f30cedd69f0a2954655f7188c6a834246d2bcf1e315e2ac40c4b24dc9519"
+dependencies = [
+ "cfg-if",
+ "rayon",
+]
+
 [[package]]
 name = "memchr"
 version = "2.7.4"
@@ -4155,7 +4261,7 @@ dependencies = [
  "keyring-core",
  "log",
  "once_cell",
- "pbkdf2 0.13.0",
+ "pbkdf2",
  "pdfium-render",
  "pptx-to-md",
  "qdrant-edge",
@@ -4234,6 +4340,16 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "moxcms"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bb85c154ba489f01b25c0d36ae69a87e4a1c73a72631fc6c0eb6dde34a73e44b"
+dependencies = [
+ "num-traits",
+ "pxfm",
+]
+
 [[package]]
 name = "muda"
 version = "0.19.1"
@@ -4252,7 +4368,7 @@ dependencies = [
  "png 0.18.1",
  "serde",
  "thiserror 2.0.18",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -4349,6 +4465,12 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "noop_proc_macro"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0676bb32a98c1a483ce53e500a81ad9c3d5b3f7c920c28c24e9cb0980d0b5bc8"
+
 [[package]]
 name = "ntapi"
 version = "0.4.2"
@@ -4403,6 +4525,7 @@ version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "73f88a1307638156682bada9d7604135552957b7818057dcef22705b4d509495"
 dependencies = [
+ "bytemuck",
  "num-traits",
 ]
 
@@ -4946,22 +5069,18 @@ version = "1.0.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "57c0d7b74b563b49d38dae00a0c37d4d6de9b432382b2892f0574ddcae73fd0a"
 
+[[package]]
+name = "pastey"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "35fb2e5f958ec131621fdd531e9fc186ed768cbe395337403ae56c17a74c68ec"
+
 [[package]]
 name = "pathdiff"
 version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8835116a5c179084a830efb3adc117ab007512b535bc1a21c991d3b32a6b44dd"
 
-[[package]]
-name = "pbkdf2"
-version = "0.12.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f8ed6a7761f76e3b9f92dfb0a60a6a6477c61024b775147ff0973a02653abaf2"
-dependencies = [
- "digest 0.10.7",
- "hmac 0.12.1",
-]
-
 [[package]]
 name = "pbkdf2"
 version = "0.13.0"
@@ -4984,7 +5103,7 @@ dependencies = [
  "chrono",
  "console_error_panic_hook",
  "console_log",
- "image 0.25.2",
+ "image",
  "itertools",
  "js-sys",
  "libloading 0.8.6",
@@ -5234,17 +5353,23 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "439ee305def115ba05938db6eb1644ff94165c5ab5e9420d1c1bcedbba909391"
 
 [[package]]
-name = "pptx-to-md"
-version = "0.4.0"
+name = "ppmd-rust"
+version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "25f7bef20173da9d560ffb6b67cba2d2b834375d0d262e5aeb86f44e069ae446"
+checksum = "efca4c95a19a79d1c98f791f10aebd5c1363b473244630bb7dbde1dc98455a24"
+
+[[package]]
+name = "pptx-to-md"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70b671cb7690973109756a72178279715142968d974672f78823c1144986e490"
 dependencies = [
  "base64 0.22.1",
- "image 0.24.9",
+ "image",
+ "quick-xml 0.41.0",
  "rayon",
- "roxmltree",
  "thiserror 2.0.18",
- "zip 2.5.0",
+ "zip 8.6.0",
 ]
 
 [[package]]
@@ -5395,6 +5520,54 @@ dependencies = [
  "hex",
 ]
 
+[[package]]
+name = "profiling"
+version = "1.0.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3d595e54a326bc53c1c197b32d295e14b169e3cfeaa8dc82b529f947fba6bcf5"
+dependencies = [
+ "profiling-procmacros",
+]
+
+[[package]]
+name = "profiling-procmacros"
+version = "1.0.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4488a4a36b9a4ba6b9334a32a39971f77c1436ec82c38707bce707699cc3bbcb"
+dependencies = [
+ "quote",
+ "syn 2.0.117",
+]
+
+[[package]]
+name = "pulp"
+version = "0.22.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "046aa45b989642ec2e4717c8e72d677b13edd831a4d3b6cf37d9a3e54912496a"
+dependencies = [
+ "bytemuck",
+ "cfg-if",
+ "libm",
+ "num-complex",
+ "paste",
+ "pulp-wasm-simd-flag",
+ "raw-cpuid",
+ "reborrow",
+ "version_check",
+]
+
+[[package]]
+name = "pulp-wasm-simd-flag"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d8f70e07b9c3962945a74e59ca1c511bba65b6419468acc217c457d93f3c740"
+
+[[package]]
+name = "pxfm"
+version = "0.1.30"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d55d956fa96f5ec02be2e13af0e20391a5aa83d6a074e3ad368959d0fab299ea"
+
 [[package]]
 name = "qdrant-edge"
 version = "0.7.2"
@@ -5458,6 +5631,12 @@ dependencies = [
  "strum",
 ]
 
+[[package]]
+name = "quick-error"
+version = "2.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a993555f31e5a609f617c12db6250dedcac1b0a85076912c436e6fc9b2c8e6a3"
+
 [[package]]
 name = "quick-xml"
 version = "0.32.0"
@@ -5682,6 +5861,65 @@ dependencies = [
  "rand_core 0.10.0",
 ]
 
+[[package]]
+name = "rav1e"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "43b6dd56e85d9483277cde964fd1bdb0428de4fec5ebba7540995639a21cb32b"
+dependencies = [
+ "aligned-vec",
+ "arbitrary",
+ "arg_enum_proc_macro",
+ "arrayvec 0.7.6",
+ "av-scenechange",
+ "av1-grain",
+ "bitstream-io",
+ "built",
+ "cfg-if",
+ "interpolate_name",
+ "itertools",
+ "libc",
+ "libfuzzer-sys",
+ "log",
+ "maybe-rayon",
+ "new_debug_unreachable",
+ "noop_proc_macro",
+ "num-derive",
+ "num-traits",
+ "paste",
+ "profiling",
+ "rand 0.9.4",
+ "rand_chacha 0.9.0",
+ "simd_helpers",
+ "thiserror 2.0.18",
+ "v_frame",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "ravif"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e52310197d971b0f5be7fe6b57530dcd27beb35c1b013f29d66c1ad73fbbcc45"
+dependencies = [
+ "avif-serialize",
+ "imgref",
+ "loop9",
+ "quick-error",
+ "rav1e",
+ "rayon",
+ "rgb",
+]
+
+[[package]]
+name = "raw-cpuid"
+version = "11.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "498cd0dc59d73224351ee52a95fee0f1a617a2eae0e7d9d720cc622c73a54186"
+dependencies = [
+ "bitflags 2.11.1",
+]
+
 [[package]]
 name = "raw-window-handle"
 version = "0.6.2"
@@ -5731,6 +5969,12 @@ dependencies = [
  "rustfft",
 ]
 
+[[package]]
+name = "reborrow"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "03251193000f4bd3b042892be858ee50e8b3719f2b08e5833ac4353724632430"
+
 [[package]]
 name = "redox_syscall"
 version = "0.4.1"
@@ -5881,6 +6125,12 @@ dependencies = [
  "windows-sys 0.60.2",
 ]
 
+[[package]]
+name = "rgb"
+version = "0.8.53"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "47b34b781b31e5d73e9fbc8689c70551fd1ade9a19e3e28cfec8580a79290cc4"
+
 [[package]]
 name = "ring"
 version = "0.17.14"
@@ -5946,12 +6196,6 @@ dependencies = [
  "wide",
 ]
 
-[[package]]
-name = "roxmltree"
-version = "0.20.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6c20b6793b5c2fa6553b250154b78d6d0db37e72700ae35fad9387a46f487c97"
-
 [[package]]
 name = "rstar"
 version = "0.12.2"
@@ -6046,7 +6290,7 @@ dependencies = [
  "errno",
  "libc",
  "linux-raw-sys 0.12.1",
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -6105,7 +6349,7 @@ dependencies = [
  "security-framework",
  "security-framework-sys",
  "webpki-root-certs",
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -6576,13 +6820,13 @@ dependencies = [
 
 [[package]]
 name = "sha1"
-version = "0.10.6"
+version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e3bf829a2d51ab4a5ddf1352d8470c140cadc8301b2ae1789db023f01cedd6ba"
+checksum = "aacc4cc499359472b4abe1bf11d0b12e688af9a805fa5e3016f9a386dc2d0214"
 dependencies = [
  "cfg-if",
- "cpufeatures 0.2.12",
- "digest 0.10.7",
+ "cpufeatures 0.3.0",
+ "digest 0.11.3",
 ]
 
 [[package]]
@@ -6677,6 +6921,15 @@ version = "0.3.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d66dc143e6b11c1eddc06d5c423cfc97062865baf299914ab64caa38182078fe"
 
+[[package]]
+name = "simd_helpers"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "95890f873bec569a0362c235787f3aca6e1e887302ba4840839bcc6459c42da6"
+dependencies = [
+ "quote",
+]
+
 [[package]]
 name = "siphasher"
 version = "1.0.3"
@@ -6708,7 +6961,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3a766e1110788c36f4fa1c2b71b387a7815aa65f88ce0229841826633d93723e"
 dependencies = [
  "libc",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -7635,10 +7888,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "32497e9a4c7b38532efcdebeef879707aa9f794296a4f0244f6f69e9bc8574bd"
 dependencies = [
  "fastrand",
- "getrandom 0.3.1",
+ "getrandom 0.4.2",
  "once_cell",
  "rustix 1.1.4",
- "windows-sys 0.59.0",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -7707,13 +7960,16 @@ dependencies = [
 
 [[package]]
 name = "tiff"
-version = "0.9.1"
+version = "0.11.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ba1310fcea54c6a9a4fd1aad794ecc02c31682f6bfbecdf460bf19533eed1e3e"
+checksum = "b63feaf3343d35b6ca4d50483f94843803b0f51634937cc2ec519fc32232bc52"
 dependencies = [
+ "fax",
  "flate2",
- "jpeg-decoder",
+ "half 2.7.1",
+ "quick-error",
  "weezl",
+ "zune-jpeg",
 ]
 
 [[package]]
@@ -7724,6 +7980,7 @@ checksum = "743bd48c283afc0388f9b8827b976905fb217ad9e647fae3a379a9283c4def2c"
 dependencies = [
  "deranged",
  "itoa",
+ "js-sys",
  "num-conv",
  "powerfmt",
  "serde_core",
@@ -8097,7 +8354,7 @@ dependencies = [
  "png 0.18.1",
  "serde",
  "thiserror 2.0.18",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -8150,7 +8407,7 @@ checksum = "f2f6fb2847f6742cd76af783a2a2c49e9375d0a111c7bef6f71cd9e738c72d6e"
 dependencies = [
  "memoffset",
  "tempfile",
- "windows-sys 0.60.2",
+ "windows-sys 0.61.2",
 ]
 
 [[package]]
@@ -8315,6 +8572,17 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "v_frame"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "666b7727c8875d6ab5db9533418d7c764233ac9c0cff1d469aec8fa127597be2"
+dependencies = [
+ "aligned-vec",
+ "num-traits",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "validator"
 version = "0.20.0"
@@ -8798,9 +9066,9 @@ dependencies = [
 
 [[package]]
 name = "weezl"
-version = "0.1.8"
+version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "53a85b86a771b1c87058196170769dd264f66c0782acf1ae6cc51bfd64b39082"
+checksum = "a28ac98ddc8b9274cb41bb4d9d4d5c425b6020c50c46f25559911905610b4a88"
 
 [[package]]
 name = "whatlang"
@@ -9722,13 +9990,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fdd20c5420375476fbd4394763288da7eb0cc0b8c11deed431a91562af7335d3"
 
 [[package]]
-name = "xz2"
-version = "0.1.7"
+name = "y4m"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "388c44dc09d76f1536602ead6d325eb532f5c122f17782bd57fb47baeeb767e2"
-dependencies = [
- "lzma-sys",
-]
+checksum = "7a5a4b21e1a62b67a2970e6831bc091d7b87e119e7f9791aef9702e3bef04448"
 
 [[package]]
 name = "yasna"
@@ -9909,34 +10174,6 @@ dependencies = [
  "syn 2.0.117",
 ]
 
-[[package]]
-name = "zip"
-version = "2.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "27c03817464f64e23f6f37574b4fdc8cf65925b5bfd2b0f2aedf959791941f88"
-dependencies = [
- "aes 0.8.4",
- "arbitrary",
- "bzip2",
- "constant_time_eq 0.3.1",
- "crc32fast",
- "crossbeam-utils",
- "deflate64",
- "flate2",
- "getrandom 0.3.1",
- "hmac 0.12.1",
- "indexmap 2.14.0",
- "lzma-rs",
- "memchr",
- "pbkdf2 0.12.2",
- "sha1",
- "time",
- "xz2",
- "zeroize",
- "zopfli",
- "zstd",
-]
-
 [[package]]
 name = "zip"
 version = "4.6.1"
@@ -9955,12 +10192,25 @@ version = "8.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2d04a6b5381502aa6087c94c669499eb1602eb9c5e8198e534de571f7154809b"
 dependencies = [
+ "aes 0.9.1",
+ "bzip2",
+ "constant_time_eq 0.4.2",
  "crc32fast",
+ "deflate64",
  "flate2",
+ "getrandom 0.4.2",
+ "hmac 0.13.0",
  "indexmap 2.14.0",
+ "lzma-rust2",
  "memchr",
+ "pbkdf2",
+ "ppmd-rust",
+ "sha1",
+ "time",
  "typed-path",
+ "zeroize",
  "zopfli",
+ "zstd",
 ]
 
 [[package]]
@@ -10017,9 +10267,9 @@ dependencies = [
 
 [[package]]
 name = "zune-core"
-version = "0.4.12"
+version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3f423a2c17029964870cfaabb1f13dfab7d092a62a29a89264f4d36990ca414a"
+checksum = "cb8a0807f7c01457d0379ba880ba6322660448ddebc890ce29bb64da71fb40f9"
 
 [[package]]
 name = "zune-inflate"
@@ -10032,9 +10282,9 @@ dependencies = [
 
 [[package]]
 name = "zune-jpeg"
-version = "0.4.14"
+version = "0.5.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "99a5bab8d7dedf81405c4bb1f2b83ea057643d9cb28778cea9eecddeedd2e028"
+checksum = "27bc9d5b815bc103f142aa054f561d9187d191692ec7c2d1e2b4737f8dbd7296"
 dependencies = [
  "zune-core",
 ]
diff --git a/runtime/Cargo.toml b/runtime/Cargo.toml
index a6bc6e0a..4e3e70b4 100644
--- a/runtime/Cargo.toml
+++ b/runtime/Cargo.toml
@@ -49,7 +49,7 @@ pdfium-render = "0.9.1"
 sys-locale = "0.3.2"
 whoami = "2.1.2"
 cfg-if = "1.0.4"
-pptx-to-md = "0.4.0"
+pptx-to-md = "1.0.0"
 tempfile = "3.27.0"
 strum_macros = "0.28.0"
 sysinfo = "0.39.6"
diff --git a/runtime/src/file_data.rs b/runtime/src/file_data.rs
index 005ab11b..ca8a1671 100644
--- a/runtime/src/file_data.rs
+++ b/runtime/src/file_data.rs
@@ -12,7 +12,7 @@ use calamine::{open_workbook_auto, Reader};
 use file_format::{FileFormat, Kind};
 use futures::{Stream, StreamExt};
 use pdfium_render::prelude::Pdfium;
-use pptx_to_md::{ImageHandlingMode, ParserConfig, PptxContainer};
+use pptx_to_md::{DiagnosticSeverity, ImageHandlingMode, MarkdownOptions, ParserConfig, PresentationContainer, PresentationFormat, PresentationMetadata, ReadingOrder};
 use serde::{Deserialize, Deserializer, Serialize};
 use serde::de::{Error as SerdeError, Visitor};
 use std::path::Path;
@@ -207,7 +207,8 @@ async fn stream_data(file_path: &str, extract_images: bool) -> Result<ChunkStrea
             stream_text_file(file_path, true, Some("csv".to_string())).await?
         },
 
-        "pptx" => stream_pptx(file_path, extract_images).await?,
+        "pptx" => stream_presentation(file_path, extract_images, PresentationFormat::Pptx).await?,
+        "odp" => stream_presentation(file_path, extract_images, PresentationFormat::Odp).await?,
         
         "xlsx" | "ods" | "xls" | "xlsm" | "xlsb" | "xla" | "xlam" => {
             stream_spreadsheet_as_csv(file_path).await?
@@ -248,8 +249,11 @@ async fn stream_data(file_path: &str, extract_images: bool) -> Result<ChunkStrea
             
             Kind::Presentation => match fmt {
                 FileFormat::OfficeOpenXmlPresentation => {
-                    stream_pptx(file_path, extract_images).await?
+                    stream_presentation(file_path, extract_images, PresentationFormat::Pptx).await?
                 },
+                FileFormat::OpendocumentPresentation => {
+                    stream_presentation(file_path, extract_images, PresentationFormat::Odp).await?
+                }
 
                 _ => stream_text_file(file_path, false, None).await?,
             },
@@ -452,7 +456,7 @@ async fn chunk_image(file_path: &str) -> Result<ChunkStream> {
     Ok(Box::pin(stream))
 }
 
-async fn stream_pptx(file_path: &str, extract_images: bool) -> Result<ChunkStream> {
+async fn stream_presentation(file_path: &str, extract_images: bool, format: PresentationFormat) -> Result<ChunkStream> {
     let path = Path::new(file_path).to_owned();
 
     let parser_config = ParserConfig::builder()
@@ -460,76 +464,167 @@ async fn stream_pptx(file_path: &str, extract_images: bool) -> Result<ChunkStrea
         .compress_images(true)
         .quality(75)
         .image_handling_mode(ImageHandlingMode::Manually)
+        .include_presentation_metadata(true)
         .build();
 
+    let markdown_options = MarkdownOptions {
+        reading_order: ReadingOrder::Spatial,
+        include_slide_number_as_comment: true,
+        include_speaker_notes: true,
+        include_comments: true,
+        render_unsupported_comments: true,
+    };
+
     let mut streamer = tokio::task::spawn_blocking(move || {
-        PptxContainer::open(&path, parser_config).map_err(|e| Box::new(e) as Box<dyn std::error::Error + Send + Sync>)
+        PresentationContainer::open_as(&path, parser_config, format).map_err(|e| Box::new(e) as Box<dyn std::error::Error + Send + Sync>)
     }).await??;
 
     let (tx, rx) = mpsc::channel(32);
+    let worker_error_tx = tx.clone();
+
+    // Slide iteration performs synchronous ZIP/XML work and image compression,
+    // so the complete producer must stay outside Tokio's asynchronous workers.
+    let worker = tokio::task::spawn_blocking(move || {
+        let mut metadata_md = presentation_metadata_to_markdown(streamer.metadata());
 
-    tokio::spawn(async move {
         for slide_result in streamer.iter_slides() {
-            match slide_result {
-                Ok(slide) => {
-                    if let Some(md_content) = slide.convert_to_md() {
+            let slide = match slide_result {
+                Ok(slide) => slide,
+                Err(e) => {
+                    let _ = tx.blocking_send(Err(Box::new(e) as Box<dyn std::error::Error + Send + Sync>));
+                    return;
+                },
+            };
+
+            for diagnostic in &slide.diagnostics {
+                let source = diagnostic.source.as_deref().unwrap_or("presentation");
+                match diagnostic.severity {
+                    DiagnosticSeverity::Warning => warn!(
+                        "Presentation slide {} warning in '{}': {}",
+                        slide.slide_number,
+                        source,
+                        diagnostic.message
+                    ),
+                    DiagnosticSeverity::Error => error!(
+                        "Presentation slide {} error in '{}': {}",
+                        slide.slide_number,
+                        source,
+                        diagnostic.message
+                    ),
+                }
+            }
+
+            let mut content = match slide.to_markdown(&markdown_options) {
+                Ok(content) => content,
+                Err(e) => {
+                    let _ = tx.blocking_send(Err(Box::new(e) as Box<dyn std::error::Error + Send + Sync>));
+                    return;
+                },
+            };
+
+            if let Some(metadata) = metadata_md.take() {
+                content = format!("{metadata}\n\n{content}");
+            }
+
+            let chunk = Chunk::new(
+                content,
+                Metadata::Presentation {
+                    slide_number: slide.slide_number,
+                    image: None,
+                }
+            );
+
+            if tx.blocking_send(Ok(chunk)).is_err() {
+                return;
+            }
+
+            if let Some(images) = slide.load_images_manually() {
+                for image in images.iter() {
+                    let base64_data = &image.base64_content;
+                    let total_length = base64_data.len();
+                    let mut offset = 0;
+                    let mut segment_index = 0;
+
+                    while offset < total_length {
+                        let end = min(offset + IMAGE_SEGMENT_SIZE_IN_CHARS, total_length);
+                        let segment_content = &base64_data[offset..end];
+                        let is_end = end == total_length;
+
+                        let base64_image = Base64Image::new(
+                            image.img_ref.id.clone(),
+                            segment_content.to_string(),
+                            segment_index,
+                            is_end
+                        );
+
                         let chunk = Chunk::new(
-                            md_content,
+                            String::new(),
                             Metadata::Presentation {
                                 slide_number: slide.slide_number,
-                                image: None,
+                                image: Some(base64_image),
                             }
                         );
 
-                        if tx.send(Ok(chunk)).await.is_err() {
-                            break;
+                        if tx.blocking_send(Ok(chunk)).is_err() {
+                            return;
                         }
+
+                        offset = end;
+                        segment_index += 1;
                     }
-
-                    if let Some(images) = slide.load_images_manually() {
-                        for image in images.iter() {
-                            let base64_data = &image.base64_content;
-                            let total_length = base64_data.len();
-                            let mut offset = 0;
-                            let mut segment_index = 0;
-
-                            while offset < total_length {
-                                let end = min(offset + IMAGE_SEGMENT_SIZE_IN_CHARS, total_length);
-                                let segment_content = &base64_data[offset..end];
-                                let is_end = end == total_length;
-
-                                let base64_image = Base64Image::new(
-                                    image.img_ref.id.clone(),
-                                    segment_content.to_string(),
-                                    segment_index,
-                                    is_end
-                                );
-
-                                let chunk = Chunk::new(
-                                    String::new(),
-                                    Metadata::Presentation {
-                                        slide_number: slide.slide_number,
-                                        image: Some(base64_image),
-                                    }
-                                );
-
-                                if tx.send(Ok(chunk)).await.is_err() {
-                                    break;
-                                }
-
-                                offset = end;
-                                segment_index += 1;
-                            }
-                        }
-                    }
-                },
-                Err(e) => {
-                    let _ = tx.send(Err(Box::new(e) as Box<dyn std::error::Error + Send + Sync>)).await;
-                    break;
                 }
             }
         }
     });
 
+    tokio::spawn(async move {
+        if let Err(e) = worker.await {
+            let _ = worker_error_tx.send(Err(format!("Presentation parser task failed: {e}").into())).await;
+        }
+    });
+
     Ok(Box::pin(ReceiverStream::new(rx)))
 }
+
+fn presentation_metadata_to_markdown(metadata: &PresentationMetadata) -> Option<String> {
+    let mut fields = Vec::new();
+    push_presentation_metadata_field(&mut fields, "Title", metadata.title.as_deref());
+    push_presentation_metadata_field(&mut fields, "Author", metadata.author.as_deref());
+    push_presentation_metadata_field(&mut fields, "Last Modified By", metadata.last_modified_by.as_deref());
+    push_presentation_metadata_field(&mut fields, "Subject", metadata.subject.as_deref());
+    push_presentation_metadata_field(&mut fields, "Description", metadata.description.as_deref());
+    if !metadata.keywords.is_empty() {
+        fields.push(format!(
+            "Keywords: {}",
+            sanitize_presentation_metadata_value(&metadata.keywords.join("; "))
+        ));
+    }
+    push_presentation_metadata_field(&mut fields, "Created", metadata.created_at.as_deref());
+    push_presentation_metadata_field(&mut fields, "Modified", metadata.modified_at.as_deref());
+
+    if fields.is_empty() {
+        None
+    } else {
+        Some(format!(
+            "<!-- Presentation Metadata\n{}\n-->",
+            fields.join("\n")
+        ))
+    }
+}
+
+fn push_presentation_metadata_field(fields: &mut Vec<String>, label: &str, value: Option<&str>) {
+    if let Some(value) = value {
+        fields.push(format!(
+            "{label}: {}",
+            sanitize_presentation_metadata_value(value)
+        ));
+    }
+}
+
+fn sanitize_presentation_metadata_value(value: &str) -> String {
+    value
+        .split_whitespace()
+        .collect::<Vec<_>>()
+        .join(" ")
+        .replace("--", "&#45;&#45;")
+}