Merge PDF Files — Free Online

Combine two or more PDF documents into a single file. The whole process runs in your browser, so your documents never get uploaded to any server.

Whether you are stitching together a multi-chapter report, combining bank statements for a tax return, or merging signed contract pages back into one document, our PDF merger does it without sending your files anywhere. The merge happens entirely in your browser using JavaScript — your documents never touch a server.

Add as many PDFs as you want, reorder them, and export a single combined file in seconds. Standard PDF features like text, images, links and bookmarks are preserved across the merged document.

How to MERGE PDF online

  1. Add your PDF files — Click "Add files" and select two or more PDFs from your device. They will appear in the list in the order you added them.
  2. Arrange the order — Remove unwanted files. The final PDF will follow the order shown — drag and drop to reorder.
  3. Merge & download — Click "Merge PDFs" — the new combined PDF is generated locally and downloaded instantly.

Why use this tool

100% private

All processing happens locally in your browser — files are never uploaded.

Unlimited pages

Merge two PDFs or twenty — there is no per-document page limit.

Preserves links and text

Hyperlinks, selectable text and embedded images are kept intact in the merged file.

Reorder before merging

Drag files into the order you want — the final PDF follows your sequence.

No installation

Works in any modern browser; no desktop app or browser extension required.

Works offline

Once the page is loaded, you can disconnect from the internet and the merge will still complete.

Use cases

  • Combine bank statements from different months into one tax document
  • Merge signed contract pages back into the original agreement
  • Compile multi-chapter ebooks or research papers into a single PDF
  • Bundle invoices from several vendors into one expense report
  • Stitch separate scan jobs into a complete document
  • Combine a CV, cover letter and portfolio into one job application

Why choose AIToolsBridge

Other merge tools upload your documents to their servers — fine for marketing PDFs, risky for contracts and statements. Because we do everything in your browser, even the most sensitive documents (medical records, legal contracts, tax returns) stay completely under your control.

Frequently asked questions

Are my PDFs uploaded anywhere?

No. Merging happens entirely in your browser using JavaScript — files never leave your device.

How many PDFs can I merge?

There is no fixed limit, but very large totals (>100 MB combined) may slow down older browsers or low-memory devices.

Will bookmarks and links be kept?

Standard text, images and most links are preserved. Form fields and complex annotations may be flattened.

Does it work with password-protected PDFs?

No. Remove the password from the PDF first, then merge the unlocked files.

Can I reorder the pages within a PDF?

Reordering whole files is supported. To reorder pages within a single PDF, use our split-pdf tool first to extract the pages you need.

Will the merged file include bookmarks from each source PDF?

Top-level bookmarks are preserved when possible, but complex outline trees may be simplified.

Are my files safe and private?

Yes. All uploads happen over HTTPS, files are processed in isolated jobs, and the source and output are deleted automatically once your download is ready. We never share, index or sell your documents.

Is the tool really free?

Yes — there is no credit card, no trial period and no hidden fees. The free tier covers everyday document needs without any watermark on the output.

Does it work on mobile and tablet?

Yes. The interface is fully responsive and works in any modern browser on Windows, macOS, Linux, iOS and Android.