Embedding a font in a PPTX: the file that LibreOffice used, and the two it silently ignored
I've been writing a PPTX exporter, and I wanted the font to travel with the file. When the person...
Oct 21, 20263 min read0 reactions0 comments
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My PPTX converter dropped every SmartArt diagram — the text lived outside the slide XML
An agent testing my document pipeline fed in a 22-slide pitch deck and wanted it indexed for...
Oct 9, 20262 min read0 reactions0 comments
My DOCX converter treated redlines as final — in a contract, tracked changes are the negotiation
Last week a pipeline I run ingested a services agreement that had been through two rounds of...
Oct 6, 20262 min read0 reactions0 comments
My PPTX converter silently dropped half a pitch deck — SmartArt text lives in a different XML part
A user ran their investor deck through my PPTX-to-Markdown converter and chunks of content just...
Oct 5, 20262 min read0 reactions0 comments
Word doesn't store list numbers in the text — my DOCX converter printed clauses as bare paragraphs
A user fed a 40-page contract into my DOCX converter and complained that every clause came out as a...
Oct 3, 20262 min read0 reactions0 comments
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Aug 6, 2026An OPC signature has only three transform algorithms
DocFence 0.56 permits only OPC's three transform algorithms in recognized package XML signatures.
Aug 6, 20263 min read1 reactions1 comments
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Aug 6, 2026A Relationship Transform belongs in the package manifest
DocFence 0.57 requires every OPC Relationship Transform to have its manifest, selector, canonicalization, and relationships-part context.
Aug 6, 20263 min read0 reactions0 comments
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Aug 6, 2026A method has an attribute boundary
DocFence 0.64 rejects undeclared XMLDSIG CanonicalizationMethod and SignatureMethod attributes in recognized OPC package signatures.
Aug 6, 20262 min read0 reactions0 comments
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Aug 6, 2026A declaration has an attribute boundary
DocFence 0.62 stops unknown XMLDSIG Reference and DigestMethod attributes from receiving static package-signature coverage credit.
Aug 6, 20262 min read0 reactions0 comments
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Aug 6, 2026A signature has an order
DocFence 0.60 validates the direct XMLDSIG Signature and SignedInfo child sequences in recognized OPC signatures.
Aug 6, 20262 min read0 reactions0 comments
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Aug 6, 2026A content type is not case-sensitive
DocFence 0.61 matches OPC manifest ContentType values case-insensitively in its bounded signature-coverage audit.
Aug 6, 20262 min read0 reactions0 comments
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Aug 6, 2026A relationship match is not case-sensitive
DocFence 0.59 makes static OPC relationship-signature coverage follow ASCII-case-insensitive selector matching.
Aug 6, 20262 min read0 reactions0 comments