Merge PDF Files Online
Combine two or more PDFs into a single document, in exactly the order you choose. Merging runs entirely in your browser, so your files are never uploaded to a server.
This free tool merges PDF files online without the file actually going online: the combining happens locally in your browser, so contracts, statements, certificates, and ID documents never leave your device. Add as many PDFs as you need, arrange them with the arrows, and download one clean document.
Pages are copied exactly as they are, not re-rendered: text stays selectable, links keep working, and quality is untouched. There is no signup, no watermark, and no "2 merges per day" limit, because local merging costs nothing to run.
How to merge PDF files into one
- Add your PDFs
Drag two or more PDF files into the box above, or click to browse. You can add more files at any time.
- Put them in order
Use the ↑ and ↓ buttons next to each file to arrange the sequence; the merged document follows the list top to bottom.
- Click Merge PDFs
The files are combined on your device in about a second, even for long documents.
- Download the result
One merged PDF downloads automatically, with every page in the order you set.
Need the merged PDF under a size limit?
The most common reason to merge documents in the first place is an upload portal that wants "one PDF", and the same portal usually enforces a size cap. The workflow that works: merge here first, then run the result through our size-targeted compressor, which reduces quality in steps until the file genuinely fits, whether that is 100 KB, 200 KB, or 500 KB.
Merging first matters: compressing files individually and then merging usually overshoots the cap, because each file carries its own overhead. One merge, one compression pass against the real target, one upload that passes.
Merge PDFs with images, scans, and mixed sources
Any standard PDF merges with any other: digital exports, scanned pages, and phone-photographed documents saved as PDF all combine into one file. Two situations need one extra step first:
- Password-protected PDFs (bank e-statements are the classic case) cannot be read by any merger. Remove the password once with our free Unlock PDF tool, then merge.
- JPG or PNG images are not PDFs yet; turn them into one with Combine Images to PDF, then merge that with your other documents.
Why use this converter?
Private by design
Conversion runs in your browser. Your files are never uploaded, stored, or seen by anyone.
Genuinely free
No daily task limits, premium tiers, or watermarks. Local conversion costs nothing to run.
Instant results
No upload and download queues. Files convert in about a second, even on slow connections.
Works everywhere
Windows, Mac, Linux, iPhone, Android: any modern browser, no app or software install.
Frequently asked questions
How do I merge PDF files online for free?
Drag two or more PDFs into the tool above, arrange the order with the arrow buttons, and click Merge PDFs. The combined file downloads instantly. Free, no signup, no watermark, and the files never leave your browser.
Are my PDFs uploaded to a server?
No. The merging runs locally in your browser using JavaScript, so your documents are never uploaded anywhere. That makes this safe for statements, contracts, and identity documents.
Can I control the page order?
Yes. The merged document follows the file list from top to bottom, and the ↑ ↓ buttons let you arrange it precisely before merging.
Does merging reduce quality?
No. Pages are copied exactly, not re-rendered: text stays selectable and searchable, images keep full resolution, and links keep working.
How do I merge PDFs into one file under 200 KB?
Merge here first, then compress the merged file with our compress-to-200KB tool, which steps quality down until the file actually fits the cap. The same works for 100 KB and 500 KB limits.
Why does one of my PDFs fail to merge?
Almost always because it is password-protected or damaged. Remove a password with our free Unlock PDF tool, or rebuild a damaged file with Repair PDF, then merge again.
Is there a limit on the number of files or pages?
No fixed limit. Because nothing is uploaded, the practical limit is your device’s memory, and hundreds of pages merge without trouble on a normal computer.