PrzemyslawKlys · Oct 11, 2026 · Oct 9, 2026 · Oct 9, 2026 · Oct 9, 2026 · Oct 9, 2026
diff --git a/.gitattributes b/.gitattributes
@@ -164,6 +164,13 @@ OfficeIMO.Visio.Tests/Fixtures/LegacyXml/*.vsx -text -diff
 OfficeIMO.Visio.Tests/Fixtures/LegacyXml/*.vtx -text -diff
 OfficeIMO.Visio.Tests/Fixtures/LegacyXml/*LICENSE.txt -text -whitespace
 OfficeIMO.Visio.Tests/Fixtures/LegacyXml/*.xml -text -whitespace
+# Binary Visio qualification pairs preserve the producer's exact original bytes.
+OfficeIMO.Visio.Tests/Fixtures/LegacyBinary/*.vsd -text -diff
+OfficeIMO.Visio.Tests/Fixtures/LegacyBinary/*.vss -text -diff
+OfficeIMO.Visio.Tests/Fixtures/LegacyBinary/*.vst -text -diff
+OfficeIMO.Visio.Tests/Fixtures/LegacyBinary/*.vdx -text -diff
+OfficeIMO.Visio.Tests/Fixtures/LegacyBinary/*.vsx -text -diff
+OfficeIMO.Visio.Tests/Fixtures/LegacyBinary/*.vtx -text -diff
 OfficeIMO.OpenDocument.Tests/Fixtures/Drawing/*.fodg -text
 OfficeIMO.OpenDocument.Tests/Fixtures/Drawing/*.fodp -text
 

diff --git a/Build/CompatibilityCatalog/ConversionApiCompileContract.cs b/Build/CompatibilityCatalog/ConversionApiCompileContract.cs
@@ -1,3 +1,4 @@
+using OfficeIMO;
 using OfficeIMO.Adf;
 using DBAClientX.Dbf;
 using OfficeIMO.AsciiDoc;
@@ -158,6 +159,20 @@ internal static void Verify(
         _ = OfficeIMO.OpenDocument.Ods.Pdf.OdsPdfConversionExtensions.ToOdsDocumentResult(pdf);
         _ = OfficeIMO.OpenDocument.Odp.Pdf.OdpPdfConversionExtensions.ToPdfDocumentResult(odp);
         _ = OfficeIMO.OpenDocument.Odp.Pdf.OdpPdfConversionExtensions.ToOdpPresentationResult(pdf);
+        OfficeConversionResult<VisioDocument, OfficeLegacyImportReport> binaryVisio = VisioDocument.LoadLegacyBinary(stream);
+        OfficeLegacyImportReport binaryImportReport = binaryVisio.Report;
+        binaryVisio.Value.Save(stream);
+        OfficeConversionResult<VisioDocument, OfficeLegacyImportReport> binaryStencil = VisioDocument.LoadLegacyBinary(stream, VisioPackageType.Stencil);
+        OfficeLegacyImportReport stencilImportReport = binaryStencil.Report;
+        binaryStencil.Value.Save(stream);
+        OfficeConversionResult<VisioDocument, OfficeLegacyImportReport> binaryTemplate = VisioDocument.LoadLegacyBinary(stream, VisioPackageType.Template);
+        OfficeLegacyImportReport templateImportReport = binaryTemplate.Report;
+        binaryTemplate.Value.Save(stream);
+        OfficeConversionResult<VisioDocument, OfficeLegacyImportReport> binaryPageSource = VisioDocument.LoadLegacyBinary(source);
+        OfficeLegacyImportReport pageSourceImportReport = binaryPageSource.Report;
+        string binarySvg = binaryPageSource.Value.Pages[0].ToSvg();
+        PdfDocumentConversionResult binaryPdf = OfficeIMO.Visio.Pdf.VisioPdfConverterExtensions.ToPdfDocumentResult(binaryPageSource.Value,
+            new OfficeIMO.Visio.Pdf.VisioToPdfOptions { Mode = OfficeIMO.Visio.Pdf.VisioPdfProjectionMode.DiagramPages });
         _ = OfficeIMO.Visio.Pdf.VisioPdfConverterExtensions.ToPdfDocumentResult(visio);
         _ = WordGoogleDocsExtensions.ExportToGoogleDocsAsync(word, session);
         _ = WordGoogleDocsExtensions.ImportGoogleDocAsync(session, "document-id");

diff --git a/Docs/Compatibility/generated/README.md b/Docs/Compatibility/generated/README.md
@@ -23,7 +23,7 @@ dotnet run --framework net8.0 --project Build/CompatibilityCatalog/OfficeIMO.Com
 | OfficeIMO.Excel.LegacyXls | 1 | 28 | [JSON](excel-legacy-xls.json) | [Markdown](excel-legacy-xls.md) |
 | OfficeIMO.Excel.Xlsb | 1 | 20 | [JSON](excel-xlsb.json) | [Markdown](excel-xlsb.md) |
 | OfficeIMO.PowerPoint.LegacyPpt | 1 | 56 | [JSON](powerpoint-legacy-ppt.json) | [Markdown](powerpoint-legacy-ppt.md) |
-| OfficeIMO.Operations | 1 | 1396 | [JSON](package-operations.json) | [Markdown](package-operations.md) |
+| OfficeIMO.Operations | 1 | 1401 | [JSON](package-operations.json) | [Markdown](package-operations.md) |
 | OfficeIMO.Provenance | 1 | 11 | [JSON](provenance.json) | [Markdown](provenance.md) |
 | OfficeIMO.ProtectedContent | 2 | 18 | [JSON](protected-content.json) | [Markdown](protected-content.md) |
 

diff --git a/Docs/Compatibility/generated/conversion-routes.json b/Docs/Compatibility/generated/conversion-routes.json
@@ -1661,6 +1661,106 @@
       "browserAvailable":false,
       "agentDiscoverable":true
     },
+    {
+      "id":"visio-binary-vsdx",
+      "source":"Binary Visio",
+      "target":"VSDX",
+      "inputKind":"File",
+      "sourceExtensions":[ ".vsd" ],
+      "targetExtension":".vsdx",
+      "packageId":"OfficeIMO.Visio",
+      "api":"var imported = VisioDocument.LoadLegacyBinary(stream); var importReport = imported.Report; imported.Value.Save(output)",
+      "description":"Reconstruct the version 11 cached shape model as an editable drawing with an import report.",
+      "fidelity":"Editable",
+      "textFormatting":"EditableEquivalent",
+      "textFormattingContract":"Preserves equivalent native font family, size, color, weight, italic, decoration, script, and casing semantics where the destination supports them; diagnostics identify approximations and omissions.",
+      "supportLevel":"Targeted",
+      "supportEvidence":"Independent Microsoft Visio version 11 drawings, stencils and templates are compared with paired native XML for shape hierarchy, masters, transforms and cached text; modern packages reopen and SVG/PDF output is inspected.",
+      "knownLimitations":"Cached reconstruction only. Earlier binary generations, native binary writing, formulas, active content, unsupported geometry, custom data and full native visual fidelity are outside this profile. Import and subsequent projection have separate loss reports; native Microsoft Visio acceptance remains unqualified.",
+      "resultContract":"OfficeConversionResult<VisioDocument, OfficeLegacyImportReport>",
+      "browserAvailable":false,
+      "agentDiscoverable":true
+    },
+    {
+      "id":"visio-binary-vssx",
+      "source":"Binary Visio stencil",
+      "target":"VSSX",
+      "inputKind":"File",
+      "sourceExtensions":[ ".vss" ],
+      "targetExtension":".vssx",
+      "packageId":"OfficeIMO.Visio",
+      "api":"var imported = VisioDocument.LoadLegacyBinary(stream, VisioPackageType.Stencil); var importReport = imported.Report; imported.Value.Save(output)",
+      "description":"Reconstruct supported cached masters as a modern stencil with an import report.",
+      "fidelity":"Editable",
+      "textFormatting":"EditableEquivalent",
+      "textFormattingContract":"Preserves equivalent native font family, size, color, weight, italic, decoration, script, and casing semantics where the destination supports them; diagnostics identify approximations and omissions.",
+      "supportLevel":"Targeted",
+      "supportEvidence":"Independent Microsoft Visio version 11 drawings, stencils and templates are compared with paired native XML for shape hierarchy, masters, transforms and cached text; modern packages reopen and SVG/PDF output is inspected.",
+      "knownLimitations":"Cached reconstruction only. Earlier binary generations, native binary writing, formulas, active content, unsupported geometry, custom data and full native visual fidelity are outside this profile. Import and subsequent projection have separate loss reports; native Microsoft Visio acceptance remains unqualified.",
+      "resultContract":"OfficeConversionResult<VisioDocument, OfficeLegacyImportReport>",
+      "browserAvailable":false,
+      "agentDiscoverable":true
+    },
+    {
+      "id":"visio-binary-vstx",
+      "source":"Binary Visio template",
+      "target":"VSTX",
+      "inputKind":"File",
+      "sourceExtensions":[ ".vst" ],
+      "targetExtension":".vstx",
+      "packageId":"OfficeIMO.Visio",
+      "api":"var imported = VisioDocument.LoadLegacyBinary(stream, VisioPackageType.Template); var importReport = imported.Report; imported.Value.Save(output)",
+      "description":"Reconstruct supported cached pages and masters as a modern template with an import report.",
+      "fidelity":"Editable",
+      "textFormatting":"EditableEquivalent",
+      "textFormattingContract":"Preserves equivalent native font family, size, color, weight, italic, decoration, script, and casing semantics where the destination supports them; diagnostics identify approximations and omissions.",
+      "supportLevel":"Targeted",
+      "supportEvidence":"Independent Microsoft Visio version 11 drawings, stencils and templates are compared with paired native XML for shape hierarchy, masters, transforms and cached text; modern packages reopen and SVG/PDF output is inspected.",
+      "knownLimitations":"Cached reconstruction only. Earlier binary generations, native binary writing, formulas, active content, unsupported geometry, custom data and full native visual fidelity are outside this profile. Import and subsequent projection have separate loss reports; native Microsoft Visio acceptance remains unqualified.",
+      "resultContract":"OfficeConversionResult<VisioDocument, OfficeLegacyImportReport>",
+      "browserAvailable":false,
+      "agentDiscoverable":true
+    },
+    {
+      "id":"visio-binary-svg",
+      "source":"Binary Visio",
+      "target":"SVG",
+      "inputKind":"File",
+      "sourceExtensions":[ ".vsd", ".vst" ],
+      "targetExtension":".svg",
+      "packageId":"OfficeIMO.Visio",
+      "api":"var imported = VisioDocument.LoadLegacyBinary(sourcePath); var importReport = imported.Report; var svg = imported.Value.Pages[0].ToSvg()",
+      "description":"Infer the drawing or template family from the source path and render a selected page; retain the source import report alongside the SVG.",
+      "fidelity":"FixedLayout",
+      "textFormatting":"VectorAppearance",
+      "textFormattingContract":"Preserves rendered font, color, weight, italic, decoration, and script appearance as SVG text and vector graphics; source-native editable semantics are not retained.",
+      "supportLevel":"Targeted",
+      "supportEvidence":"Independent Microsoft Visio version 11 drawings, stencils and templates are compared with paired native XML for shape hierarchy, masters, transforms and cached text; modern packages reopen and SVG/PDF output is inspected.",
+      "knownLimitations":"Cached reconstruction only. Earlier binary generations, native binary writing, formulas, active content, unsupported geometry, custom data and full native visual fidelity are outside this profile. Import and subsequent projection have separate loss reports; native Microsoft Visio acceptance remains unqualified.",
+      "resultContract":"string",
+      "browserAvailable":false,
+      "agentDiscoverable":true
+    },
+    {
+      "id":"visio-binary-pdf",
+      "source":"Binary Visio",
+      "target":"PDF",
+      "inputKind":"File",
+      "sourceExtensions":[ ".vsd", ".vst" ],
+      "targetExtension":".pdf",
+      "packageId":"OfficeIMO.Visio.Pdf",
+      "api":"var imported = VisioDocument.LoadLegacyBinary(sourcePath); var importReport = imported.Report; var pdf = imported.Value.ToPdfDocumentResult(new VisioToPdfOptions { Mode = VisioPdfProjectionMode.DiagramPages })",
+      "description":"Infer the drawing or template family from the source path and project pages through the existing PDF engine; retain source import and projection diagnostics.",
+      "fidelity":"FixedLayout",
+      "textFormatting":"FixedLayoutAppearance",
+      "textFormattingContract":"Preserves supported font styling as fixed-layout PDF text and graphics; conversion diagnostics identify source semantics the managed renderer approximates or omits.",
+      "supportLevel":"Targeted",
+      "supportEvidence":"Independent Microsoft Visio version 11 drawings, stencils and templates are compared with paired native XML for shape hierarchy, masters, transforms and cached text; modern packages reopen and SVG/PDF output is inspected.",
+      "knownLimitations":"Cached reconstruction only. Earlier binary generations, native binary writing, formulas, active content, unsupported geometry, custom data and full native visual fidelity are outside this profile. Import and subsequent projection have separate loss reports; native Microsoft Visio acceptance remains unqualified.",
+      "resultContract":"PdfDocumentConversionResult",
+      "browserAvailable":false,
+      "agentDiscoverable":true
+    },
     {
       "id":"visio-pdf",
       "source":"Visio",