Why we built PDFLantern
This started from a small, familiar frustration: needing to get a PDF under an exact file size limit for a submission, and not finding a tool that made that easy without endless trial and error.
Most free PDF tools we tried either buried useful features behind a paywall, forced an account just to merge two files, or quietly uploaded documents to a server somewhere before we could think twice about it. We wanted something simpler and more honest: tools that just work, stay free, and don't ask anything of you beyond opening the page.
What we believe
How it actually works
Every tool on this site — merging, splitting, compressing, watermarking, converting — runs as code inside your own browser, using modern web technology built for exactly this. When you drop in a file, it's processed on your device and never leaves it. There's no server in the middle, which means there's nothing for us to store, lose, or misuse in the first place.
Get in touch
Found a bug, have an idea for a tool, or just want to say hello? Reach us at [your contact email].
Explore the tools →