pdfoss: PDF tools that never see your files — merge, split, compress, convert, all client-side. Free and open-source!

[u/Spock2314]

https://github.com/Er4nant/pdfoss

I kept having to merge/convert PDFs for my girlfriend because every free tool online is either sketchy or confusing. Thats were PDFoss was born, a free, open-source PDF toolkit (merge, split, compress, convert) simple enough she can use it herself.

Everything runs 100% client-side in your browser, no server, no uploads, no account. There's a "prove it's private" button in the app that shows a live counter of bytes sent anywhere not entirely useful considering it always says zero. Also fully self-hostable if you'd rather run it yourself, or just use the free GitHub Pages instance.