Folio open-source PDF reader ships thumbnail, changelog and Ask AI updates

MatthewBerman · x · 2026-11-05

Matthew Berman's open-source PDF reader/editor Folio rolled out updates: page thumbnails now show each PDF page's shape and relative size; after an update it shows what changed, including skipped versions; closing Ask AI now stops its reply; page previews before printing are coming next.

Folio is a cross-platform (Windows/macOS/Linux) Electron/React app supporting highlights, annotations, signing and asking AI about documents, MIT-licensed with no account required.

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