PDF Tools

PDF tools here cover the handful of operations people actually need against a document they already have: merging several PDFs into one with the pages in the right order, splitting one PDF into a page range or into individual pages, checking whether a PDF's digital signature is actually valid, and compressing a file that's too large to email or upload somewhere with a size limit. The two Compress variants — for email attachment limits, and for a specific 100KB target — exist because "just make it smaller" isn't a single problem: a PDF full of scanned photos compresses very differently from a ten-page contract that's almost entirely text, and the honest answer for the second case is usually that it's already about as small as it's going to get without real quality loss. The compressor only recompresses JPEG images inside a document — that's stated directly rather than implied, since PNG and other embedded raster formats can't be reliably re-encoded client-side, and a tool that quietly failed to shrink those would be worse than one that says so upfront.

Every operation here runs against the file in your browser's memory; nothing is uploaded to process a merge, a split, or a compression, which matters for a signed contract or a document with a client's personal information in it.