Merge PDF - Combine PDF Files Online for Free

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Merge PDF Files in Seconds

Invoices, scanned contracts, report chapters, boarding passes: documents often arrive as separate PDFs when you need them in one file. QodeCat Merge PDF joins up to 30 files into a single document. Drop them in, put them in the right order, and download one clean PDF.

Custom order: Move files up or down before merging.
Page count preview: See how many pages each file adds.
Lossless: Pages are copied as they are, so text stays selectable and images keep their quality.
Clear errors: Password-protected or damaged files are flagged by name.

Why use this tool?

Your Files Stay on Your Device

Most online PDF mergers upload your documents to a server. This one does not. The merge runs entirely in your browser with JavaScript, so contracts, bank statements and other sensitive files are never sent anywhere.

No Quality Loss

The tool copies the original page objects into the new file instead of converting them to images. Fonts, vector graphics, links and searchable text are preserved exactly as they were.

Frequently Asked Questions

Q. Can I merge password-protected PDFs?

No. Encrypted PDFs cannot be read without their password. Remove the protection in your PDF reader first, then add the file again.

Q. How many files can I merge at once?

Up to 30 PDF files per merge. The total size is limited only by your device's memory.

Q. Will bookmarks and form fields be kept?

Page content, text and images are kept. Document-level extras such as bookmarks (outlines) and interactive form fields may not carry over into the merged file.