Are my documents uploaded?

No. The PDFs are parsed and recombined in your browser using pdf-lib. Nothing is transmitted to a server, logged, or stored.

How many PDFs can I merge at once?

There is no fixed limit. The practical ceiling is your device's memory, since every document is held in RAM while merging.

Will bookmarks and form fields survive?

Page content, text and images are copied faithfully, but bookmarks and interactive form fields from the source files are not carried across.

Merge PDF

Runs in your browser

Combine several PDFs into a single document, in the order you add them. Everything happens in your browser — the files are never uploaded.

Drop PDFs hereor click to choose — nothing is uploaded

About this tool

Merging is the most common PDF job there is: assembling a contract from separately signed pages, stitching scanned receipts into one expense claim, or joining chapters into a single report. Most online mergers upload your documents to a server to do it, which is a poor trade for something a browser can do unaided. This tool reads each file locally, copies the pages into a new document in order, and hands it straight back to you.

How to use

Add two or more PDF files. They are merged in the order shown.
Remove any file you added by mistake using the ✕ next to it.
Click Merge.
Download the combined document.

When to use this tool

Assembling a signed contract from separately returned pages.
Combining scanned receipts into one expense claim.
Joining report chapters before sending them to print.
Bundling supporting documents into a single application file.

Tips

Files merge in the order listed. To reorder, clear the list and add them in the sequence you want.
Merging is lossless — text stays selectable and image quality is untouched.
If the combined file is too large to email, follow up with the PDF compressor.

Limitations

Bookmarks and form fields from the source documents are not carried across.

FAQ

Are my documents uploaded?: No. The PDFs are parsed and recombined in your browser using pdf-lib. Nothing is transmitted to a server, logged, or stored.
How many PDFs can I merge at once?: There is no fixed limit. The practical ceiling is your device's memory, since every document is held in RAM while merging.
Will bookmarks and form fields survive?: Page content, text and images are copied faithfully, but bookmarks and interactive form fields from the source files are not carried across.