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Every PDF tool
you'll ever need
Merge, split, compress, convert — 11 powerful PDF tools, completely free, right in your browser. No installation required.
Trusted by students, professionals, and businesses worldwide
All Tools
Everything you need for PDF
All tools run directly in your browser — fast, private, and always free.
- Popular
Merge PDF
Combine multiple PDFs into one document.
Try it free Split PDF
Extract pages or split into ranges.
Try it free- Smart
Compress PDF
Reduce file size without quality loss.
Try it free PDF to Word
Convert PDF to editable .docx format.
Try it freeWord to PDF
Turn .doc/.docx files into PDF.
Try it freeJPG to PDF
Convert images into a PDF document.
Try it freePDF to JPG
Convert PDF pages to images.
Try it freeRotate PDF
Fix upside-down or sideways pages.
Try it free- New
Add Watermark
Stamp text onto every PDF page.
Try it free Lock PDF
Password-protect your PDF file.
Try it freeUnlock PDF
Remove password from a PDF.
Try it free
- 11+
Free tools
- 100%
Free forever
- 0
Sign-ups needed
- 0
Watermarks added
Simple process
Done in 3 easy steps
- 01
Pick a tool
Choose from 11 free PDF tools — merge, convert, compress, and more.
- 02
Upload your file
Drag and drop or browse. Supports PDF, DOCX, JPG, and PNG up to 100 MB.
- 03
Download instantly
Your file is ready in seconds. Originals are deleted automatically.
Why ModifyPDF
Built for privacy and speed
100% Private & Secure
All files are processed in your browser. We never upload, store, or read your documents.
Lightning Fast
No queues, no waiting. Get results in seconds powered by modern browser technology.
Works Everywhere
Fully responsive on desktop, tablet, and mobile. No app or installation required.
About ModifyPDF
Everything you need to work with PDFs — for free.
ModifyPDF gives you professional-grade PDF tools without the cost. Merge, split, compress, convert, rotate, watermark, lock or unlock — all from your browser with zero sign-up.
Designed for students, professionals, and businesses who need fast, reliable PDF processing without subscriptions or watermarks.
Explore all toolsFAQ
Frequently asked questions
Is ModifyPDF completely free?
Yes. All PDF tools are free to use with no hidden fees, no sign-up, and no watermarks.
Are my files safe?
Files are processed in your browser and deleted immediately. We never store, read, or share your documents.
Do I need to install anything?
No. ModifyPDF works entirely in your browser on desktop, tablet, and mobile devices.
What formats are supported?
ModifyPDF supports PDF, DOC, DOCX, JPG, and PNG formats across all available tools.
Can I merge and compress a PDF on the same website?
Yes. Merge multiple PDFs, then use the Compress PDF tool to reduce the file size before sharing.
Will my PDF get a watermark?
No. ModifyPDF never adds watermarks. You can add your own only when you explicitly choose the Add Watermark tool.
Can I use these tools for work and school documents?
Absolutely. ModifyPDF works great for assignments, invoices, contracts, scanned pages, certificates, and more.
Ready to get started?
No account needed. No software to install. Works in your browser. Done in seconds.