PDF Merge
Drop two or more PDFs, drag to reorder, then merge into a single document. Everything happens in your browser — nothing is uploaded.
Built for fast, private, no-nonsense work.
PDF Merge is part of PixHaul — a small set of browser-based tools we built because most of the “free online” alternatives are slow, ad-laden, and upload your files before they’ll process them. PixHaul does none of that.
PDF Merge in four steps.
- 1
Drop your PDFs in
Drag two or more PDFs into the upload area, or click to pick them from your computer.
- 2
Reorder them
Drag the file rows up or down (or use the arrow buttons) so they’ll appear in the right order in the merged file.
- 3
Click Merge
PixHaul combines the files into a single PDF entirely in your browser using pdf-lib. Nothing is uploaded.
- 4
Download the result
Your browser downloads the merged.pdf instantly. The original files are untouched on your disk.
Questions, asked & answered.
Is this PDF merger really free?
Yes — completely free, with no usage limits, no watermark on the output, and no sign-up. The tool is a static web app that runs in your browser, so it costs almost nothing to host.
Are my PDFs uploaded to a server?
No. The merging happens in your browser using the open-source pdf-lib library. Your files never leave your computer, which is faster (no upload wait) and private (we can’t see your documents).
How many PDFs can I merge at once?
There is no hard limit. We have tested merges of 30+ files totaling several hundred megabytes. The practical limit is your device’s memory — laptops typically handle dozens of large PDFs without trouble.
Can I reorder pages or just files?
This tool reorders whole files. If you need to reorder pages within a file, use our PDF Split tool to extract pages, then merge them back together in the order you want.
Does it work with password-protected PDFs?
Encrypted PDFs are loaded with the ignore-encryption flag where possible, but if a PDF is fully password-locked you’ll need to unlock it first in a desktop tool.
Will the merged PDF lose quality?
No. Pages are copied byte-for-byte from the originals. Images, fonts and form fields are preserved. The output file size will roughly equal the sum of the inputs.
How is this different from other online PDF mergers?
Most other tool sites upload your files to their servers, charge for a “premium” tier, throttle the free tier, and sometimes add watermarks or sign-up walls. PixHaul does the merge locally in your browser with no limits and no account.
Does it work offline?
Once the page has loaded, yes — the merge itself is offline because the JavaScript that does the work is already in your browser.