Merge two PDFs on ilovepdf, smallpdf, or almost any free PDF site and the first thing that happens is your file goes to their server. Then you wait, then you get it back - often watermarked, and usually with a page cap if you didn't pay.
I spent the last stretch building the version that doesn't do that: 20 tools, all of them running in the browser tab. So I now have an unusually specific answer to "does this actually need a server?"
PDFLove is 20 PDF tools that run inside your browser: merge, split, compress, convert, rotate, sign, OCR, password-protect and more.
Every other free PDF site uploads your file to a server first - which is why they cap free users around 30 pages and watermark the result. PDFLove does the work on your device, so nothing is uploaded, nothing is stored, nothing is metered.
Free, no account, no watermark, no page limits. Load it once and it works offline. Also on Android and iOS.
