This weeks release digest:
🔭 In the works:
Headless PowerPoint engine advanced this week, OLE object support, SmartArt models, and arg passthrough for VBA runs. Still in private dev alongside our MCP server and playground.
🔭 In the works:
Headless PowerPoint engine advanced this week, OLE object support, SmartArt models, and arg passthrough for VBA runs. Still in private dev alongside our MCP server and playground.
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⚡ Reliability:
Strict schema validation, xlsx-serve now rejects invalid op schemas by default, so malformed requests fail fast with a clear error.
Excel 1900 leap-year fix, date handling now matches Excel's quirk, so date math lines up.
Strict schema validation, xlsx-serve now rejects invalid op schemas by default, so malformed requests fail fast with a clear error.
Excel 1900 leap-year fix, date handling now matches Excel's quirk, so date math lines up.
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Building agents that produce Office artifacts? We're shipping fast and there's much more on the way, talk to us. witanlabs.com
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Time for the weekly release digest 🍔🍟
🔭 Two bigger pieces still in the works:
• Headless Presentation tool (pptx) — this week added speaker notes, comments, Office.js preview, and scrgb/hsl colours, plus more chart families.
• Web playground (MVP) — an in-browser editor (Monaco + xlsx intellisense + workbook upload) to try the API live. Coming soon.
🔭 Two bigger pieces still in the works:
• Headless Presentation tool (pptx) — this week added speaker notes, comments, Office.js preview, and scrgb/hsl colours, plus more chart families.
• Web playground (MVP) — an in-browser editor (Monaco + xlsx intellisense + workbook upload) to try the API live. Coming soon.
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⚡ Performance & reliability
• Much faster xlsx saves, plus a streaming single-pass sheet parser and lower-memory lint.
• Cached visible sheet bounds with mutation-aware invalidation.
• Fixed .xls→.xlsx converter hangs; file-size limit now configurable for self-hosting.
• Much faster xlsx saves, plus a streaming single-pass sheet parser and lower-memory lint.
• Cached visible sheet bounds with mutation-aware invalidation.
• Fixed .xls→.xlsx converter hangs; file-size limit now configurable for self-hosting.
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52
Building agents that produce Office artifacts? We're shipping fast and there's much more on the way, talk to us. witanlabs.com
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This weeks Release Digest:
🔭 In the works
Headless Presentation tool (pptx) keeps moving — this week we added:
• Layout, placeholder, slide-master and theme authoring.
• More chart families: radar, surface, and the chartex set.
• Better rendering fidelity.
Part of a bigger piece still in progress. Want early access? Drop us a line.
🔭 In the works
Headless Presentation tool (pptx) keeps moving — this week we added:
• Layout, placeholder, slide-master and theme authoring.
• More chart families: radar, surface, and the chartex set.
• Better rendering fidelity.
Part of a bigger piece still in progress. Want early access? Drop us a line.
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127
⚡️ Reliability
• Higher chart rendering fidelity for Spreadsheets.
• Faster copyRange in values mode.
• Fixes: sortRange now saves correctly; resolved a jint await hang in nested loops.
• Higher chart rendering fidelity for Spreadsheets.
• Faster copyRange in values mode.
• Fixes: sortRange now saves correctly; resolved a jint await hang in nested loops.
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76
Building agents that produce Office artifacts? We're shipping fast and there's much more on the way — talk to us.
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Witan Labs retweeted
Every platform will have a headless version
At @WitanLabs we're building the headless Office stack for AI agents.
Here's what we worked on this week — and what we're building next ↓
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At @WitanLabs we're building the headless Office stack for AI agents.
Here's what we worked on this week — and what we're building next ↓
Here's what we worked on this week — and what we're building next ↓
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⚡ Reliability
• Chart rendering fidelity fixes — plot area, tint, axis crossing, legend, extraction.
• calc now compares at the same precision used on save — fewer spurious "changed" diffs.
• Chart rendering fidelity fixes — plot area, tint, axis crossing, legend, extraction.
• calc now compares at the same precision used on save — fewer spurious "changed" diffs.
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403
Building agents that produce Office artifacts? We're shipping fast and there's much more on the way — talk to us. witanlabs.com
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308