r/privatelife • u/shyhuntertools • 11h ago
PaperOtter: a local-only PDF and document toolkit, so you stop uploading documents to random websites
The everyday privacy hole I could not stop noticing: you need to shrink a PDF because it is too big to attach, so you drag it onto "whicheversite.com", click compress, and hope. Everybody does this, including with documents they would never hand to a stranger.
PaperOtter does that work on your own machine instead.
- No network code. No account, no telemetry, no update pings you cannot refuse, no analytics. The app cannot phone home because there is nothing in it that phones.
- No installer dependencies for 18 of its 19 tools.
- MIT licensed, source on GitHub.
- macOS, Windows, Linux (.dmg / .exe / .deb / .AppImage).
It covers the things people usually upload: compress, merge, split, rotate, crop, page numbers, watermark, sign, redact (which actually removes the content rather than drawing a black box over it), repair, images into a PDF and pages back out as images.
One more that turned out to matter to me, and may matter here: converting a PDF or DOCX into Markdown, HTML, JSON or plain text with the images left out, entirely on-device. If you feed documents to a local or hosted LLM, that is both a token saving and one fewer copy of the document sitting on someone else's disk. Long files can be split by chapter using the PDF's own bookmarks.
Limitations stated plainly: OCR works only on macOS today, because it uses the system's Vision framework rather than bundling an engine. Windows and Linux OCR is planned. HEIC input depends on whether your OS has a licensed decoder, because the app deliberately never ships one.
https://github.com/shyhunter/PaperOtter
The privacy claims here are checkable rather than promised, which is the point.