How to merge multiple PDFs into one?

Use our "Merge PDFs" tool: select your files, drag to reorder, and click Process. Everything is done in your browser — no files are uploaded to any server.

How to compress a PDF without losing quality?

Our compression tool automatically reduces PDF file size while maintaining visual quality. Simply upload your file and download the result.

How to unlock a password-protected PDF?

Upload the protected PDF to our "Unlock PDF" tool. If the file only has copy/print restrictions, removal is automatic. For open passwords, you'll need to enter the password.

Is it safe to use online PDF tools?

Yes! At Unlocked PDF, all files are processed locally in your browser using WebAssembly. No files are ever sent to our servers.

Can I convert images to PDF for free?

Yes, our "Image to PDF" tool converts JPG, PNG, and WebP into multi-page PDF documents, completely free.

What types of watermarks can I add?

Custom text or image (logo, stamp) with full position and opacity control.

Is the watermark permanent?

Yes. Embedded in the PDF and not easily removable.

Can I watermark all pages?

Yes. Applied automatically to every page.

Does it affect readability?

With 30-50% opacity, it protects without hindering reading.

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Add text or image watermarks to your PDF documents to protect copyrighted content. Configure position, opacity, size, and orientation.

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