PDF Tools — Merge & Split in Your Browser
Merge PDFs and images into one document or extract pages from a PDF — free, fast, and 100% private. Your files never leave your browser, nothing is uploaded.
Unlike most online PDF services, Zolvo never uploads your documents. Every merge and split runs entirely inside your browser using WebAssembly — your files never touch a server, so even confidential contracts, invoices, and scans stay completely private.
Frequently Asked Questions
🔒 Are my PDFs uploaded anywhere?
No. All processing happens locally in your browser sandbox. Nothing you drop here is ever sent to or stored on our servers.
📎 Can I mix PDFs and images?
Yes. Add JPG, PNG, WebP or other images alongside PDFs and they'll each become a page in the combined document.
✂️ How do I extract specific pages?
Switch to Split & Extract, drop a single PDF, and enter the pages you want (for example 1-3, 5).
💸 Is there a file-size or page limit?
No artificial limits — the only ceiling is your device's memory, since the work is done on your own machine.