Combine multiple PDFs into a single document — free, fast, secure
Each PDF can be up to 100 MB. You can merge up to 20 PDFs in one go.
Yes. Files are sent over HTTPS, processed immediately, and auto-deleted from our servers within 1 hour. We never share your files.
No. Merging is a lossless operation — original resolution, fonts, and formatting of every page are preserved exactly.
Not yet. Password-protected PDFs need to be unlocked first. We plan to add an unlock feature soon.
Your files are uploaded to our server, processed by a PDF engine, then the merged file is sent back. Larger files naturally take a bit longer.
Merging PDF files means combining two or more separate PDF documents into a single file, with the pages arranged in the order you choose. A PDF merger takes individual documents — contracts, scanned pages, reports, invoices — and stitches them together into one cohesive file that's easier to share, print, and archive. Instead of sending five attachments, you send one. Instead of printing documents separately, you print a single file.
ConvertDox merges PDFs entirely through your browser session — your files are uploaded over an encrypted connection, combined on our server, and then automatically deleted within minutes. There's no watermark added to the output, no page limit, and no signup required. The merged PDF preserves the original quality, fonts, and formatting of each source document, so the result looks exactly like the originals placed back to back.
Merge a signed agreement, its appendices, and supporting exhibits into one clean file for your records or to send to the other party.
Combine a cover page, charts exported separately, and written sections into a single polished report ready for distribution.
Scanners often save each page as a separate PDF. Merge them back into one multi-page document in the correct order.
Combine your resume, cover letter, and portfolio into a single PDF so recruiters receive everything in one attachment.
Bundle a month of invoices or expense receipts into one file for accounting, tax filing, or reimbursement.
Merge lecture slides, notes, and reference PDFs into a single study guide you can read straight through.
Yes, completely free with no signup, no watermark, and no page limit. You can merge as many PDFs as you need.
Yes. Files are uploaded over an encrypted connection, merged, and automatically deleted from our servers within minutes. We never store, read, or share your documents.
You can arrange the order of the files before merging by dragging them into place. To reorder individual pages within a file, use our PDF Editor tool first.
No. Merging combines the original files without recompressing them, so text stays sharp and images keep their original resolution.
There's no strict limit, though very large files or dozens of documents at once will take longer to upload and process.
You'll need to remove the password first using our Unlock PDF tool, then merge the unlocked files.