About Mergely

Mergely is a free, open-source PDF toolkit that runs entirely in your browser. No sign-ups, no file uploads, no server-side processing. Your documents stay on your device from start to finish.

Why Mergely?

Most PDF tools require you to upload your files to a remote server. That means your private documents — contracts, tax forms, medical records — pass through someone else's infrastructure. Mergely takes a different approach: everything runs client-side using modern web technologies like pdf-lib and the PDF.js rendering engine.

What you can do

• Merge — Combine multiple PDFs and images into one document. Reorder, rotate, and delete pages before merging.
• Edit & Annotate — Draw, highlight, add text, shapes, stamps, signatures, and sticky notes to any PDF.
• Split — Extract specific pages or split a PDF into individual files.
• Compress — Reduce PDF file size while maintaining readable quality.
• Convert — Turn PDF pages into PNG/JPG images, or combine images into a PDF.
• Watermark — Add text watermarks with custom font size, opacity, rotation, and color.
• Page Numbers — Add configurable page numbering at any position on the page.
• Protect & Unlock — Encrypt your PDF with a password or unlock a protected file.
• Draw — A full drawing canvas with pen, shapes, text, and grid backgrounds.

Open source

Mergely is open source. You can view the code, report issues, or contribute on GitHub.

Built with

• Next.js — React framework
• pdf-lib — PDF creation and modification
• PDF.js — PDF rendering
• Cloudflare Pages — Hosting