About GoPDFConverter

What this site is

GoPDFConverter is a free set of PDF tools that run entirely in your web browser. Merge, split, compress, rotate, organize, sign, watermark, and convert PDFs without sending a single byte of your documents to a server. There are no accounts, no watermarks on output, and no file-size pricing tiers.

Why it exists

Most online PDF sites work the same way: you upload your file to their servers, they process it, and you download the result. That model forces you to trust a company with your contracts, medical records, financial statements, and IDs. Modern browsers don't need that trade-off. Libraries like Mozilla's PDF.js and PDF-LIB can read, edit, and write PDFs locally, on your own machine. GoPDFConverter is built on that idea: the safest upload is the one that never happens.

How to verify our claims

You don't have to take our word for it. Open your browser's developer tools (F12), switch to the Network tab, and use any tool on this site. You'll see the page and its scripts load, and then nothing: no POST requests, no file transfers, no calls home with your document. You can even disconnect from the internet after the page loads and the tools keep working.

Who builds it

GoPDFConverter is independently built and maintained by Michael Joiner, a developer based in the United States. It is not owned by a document-management company and has no incentive to collect your files. The site is supported by keeping costs near zero: static hosting, open-source libraries, and your browser doing the work.

The technology

• PDF.js (Mozilla): renders pages and powers previews and PDF-to-image conversion.
• PDF-LIB: creates and edits PDFs for merge, split, rotate, organize, watermark, page numbers, and signatures.
• MozJPEG and OxiPNG (WebAssembly): recompress images inside PDFs for smaller files.
• fflate: builds ZIP downloads when a tool outputs multiple files.

All of these are permissively licensed open-source projects, loaded as-is from public CDNs so you can audit exactly what runs.

Contact

Found a bug, have a feature request, or want to ask about how something works? Email [email protected].