PDF Tools

PDF → PNG/JPEG descriptors (page model)

Computes per-page filename, MIME, pixel dimensions and orientation from width/height, rotation and DPI; emits descriptors only, with zero raster bytes and no image files.

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Inputs and parameters

• document — Single document page model (JSON)
• format — Target format
• dpi — DPI (integer 72–300, default 144)

Real example

document={"id":"mixed","pages":[{"id":"land","width":842,"height":595},{"id":"port","width":595,"height":842},{"id":"rot","width":595,"height":842,"rotation":90}]}; format=jpg; dpi=144
→ plan.pageCount=3; descriptors[0]={filename:"page-001.jpg",mime:"image/jpeg",widthPx:1684,heightPx:1190,orientation:"landscape"}; a 90°-rotated portrait page becomes 1684×1190 landscape; every rasterBytes=null and rendered=false.

Limits and failure handling

Only png/jpeg descriptors with integer DPI 72–300; no pixel rendering and no image files; transparency, CJK fonts and searchability of scans are untested (no browser/WASM/real PDF engine this round).

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