About HappyPDF
HappyPDF is a free set of 33 online PDF tools that work entirely inside your web browser. You can merge, split, compress and convert PDFs, run OCR, and protect or unlock files. Your documents are never uploaded to a server.
Why we built it
Most online PDF services upload your files to their servers to process them. That is a risk for contracts, IDs, bank statements, medical records and school documents. Modern browsers are now powerful enough to do the work locally, so we built tools that do exactly that.
How it works
- On your device: the tools use JavaScript and WebAssembly (PDF.js, pdf-lib, Tesseract OCR and other open-source libraries) that run in your browser tab.
- No upload: files are read from your disk into the page's memory and the result is saved straight back to your device. Close the tab and everything is gone.
- No account, no watermark, no limits: since we don't pay for processing servers, we don't need to restrict you.
Who it is for
Students, office workers, small businesses and anyone who needs to fix a PDF quickly, in any country and on any device: Windows, Mac, Linux, Android or iPhone.
Contact
Questions, ideas or bug reports are welcome.