About this merge pdf
Combine separate PDFs into a single document for sharing, applications, or project handoffs. Choose your files, then use the up and down controls to put them in the right order. Every page from the first file is followed by the pages from the next file. Your documents are processed inside a browser worker and the final PDF is downloaded directly, with no account or upload required.
How it works
A new PDF is created and pages are copied from each source document in the displayed file order. The page-count limit is checked before pages are added. Processing can be canceled or times out after 45 seconds.
Try these examples
A 2-page PDF followed by a 3-page PDF
One 5-page PDF
Move file B above file A
Pages from B appear before pages from A
Limitations & privacy
Two to ten files, up to 20 MB each, 30 MB combined, and 200 total pages. Password-protected or damaged PDFs are not supported. Bookmarks, signatures, forms, attachments, and document-level features may not survive. This is not a PDF security sanitizer. Review the downloaded result before sharing.
Inputs and results stay in this browser. Only tool identifiers are stored for your recently used tools. You can clear that history from the directory.
A few good questions
Can I change the order?
Yes. Use the up and down buttons before merging.
Does merging shrink the files?
No. This tool combines pages; it does not optimize PDF size.
Are signed PDFs still signed afterward?
No. Creating a new document does not preserve the validity of source digital signatures.
Updated September 12, 2026