Why do other PDF tools require an account?

Server-based tools process your files on their infrastructure, so they use accounts to manage storage, usage limits, and billing. Because this tool runs entirely in your browser, there are no server costs and no reason to collect your information.

Is this tool completely free?

Yes. No account, no subscription, no per-file fee, and no limit on how many PDFs you merge.

Will a watermark be added to the merged PDF?

There is no watermark. The merged PDF contains only the pages from your source files.

Yes. All merging runs in your browser using pdf-lib. Our servers are not involved at any point.

Merge PDF Files: No Account Required

Combine PDFs without creating an account, providing an email address, or signing up for anything. Add your files, arrange them, click Merge, and download the result. All processing runs in your browser.

Drop PDF files here or click to browse

You can add multiple files

How it works

Because pdf-lib runs as JavaScript in your browser, the merge pipeline (parse each file, copyPages() to clone the source pages, addPage() to append them in your chosen order) executes without ever contacting a server. There is no account check, no upload queue, and no usage limit. The merged PDF is written to a Blob and offered for download the moment the operation finishes.

Processing runs in your browser

All merging happens inside your browser tab. pdf-lib combines your PDFs entirely in memory, with no network requests. You can confirm this yourselfin your browser's DevTools Network tab.

Related operations

For pulling out a single section before merging, try split PDF. To straighten sideways scans first, use rotate PDF. For shrinking the combined file, see compress PDF.

Frequently asked questions

Why do other PDF tools require an account?: Server-based tools process your files on their infrastructure, so they use accounts to manage storage, usage limits, and billing. Because this tool runs entirely in your browser, there are no server costs and no reason to collect your information.
Is this tool completely free?: Yes. No account, no subscription, no per-file fee, and no limit on how many PDFs you merge.
Will a watermark be added to the merged PDF?: There is no watermark. The merged PDF contains only the pages from your source files.
Is my file private?: Yes. All merging runs in your browser using pdf-lib. Our servers are not involved at any point.

Merge PDF Files: No Account Required

How it works

Processing runs in your browser

Related operations

Frequently asked questions

Related tools