Merge PDF Files
Combine two or more PDFs into a single document. See a thumbnail and page count for each file, drag to reorder, then preview the result — all inside your browser.
Drop 2 or more PDFs here, or click to browse
You can add more files in the next step
How merging PDFs works
Merging combines several separate PDF files into a single document, in the order you choose. It's one of the most common PDF tasks — pulling together scanned receipts, combining chapters of a report, or joining signed contract pages back into one file before filing or emailing them.
This tool reads each PDF you add directly in your browser using a JavaScript PDF library, copies every page from each file in order, and assembles them into one new PDF. Because everything happens on your own device, your files are never transmitted anywhere — there's no server upload step at all, which also means merging works even on a slow connection, since there's nothing to wait on except your own device's processing. As you add files, each one gets a first-page thumbnail and page count so you can confirm at a glance you've picked the right document, and you can drag any file into a new position — on a touchscreen as easily as with a mouse — before merging. If a file turns out to be corrupted or password-protected, it's flagged by name right away rather than failing the whole merge partway through. Once merged, you can page through the combined PDF with Preview PDF before you commit to the download.
Common use cases
- Combining scanned pages into one document to sign or submit
- Joining chapters, sections, or reports into a single deliverable
- Merging invoices or receipts before archiving or sending to an accountant
- Putting together a portfolio or application packet from separate files
- Combining multiple signed contract pages, scanned separately, back into one file
The merge preserves the original quality of every page — text stays selectable, images stay sharp, and nothing is recompressed. If your final combined file is unusually large, the Compress PDF tool can reduce its size afterward.
Related tools
Merge PDF — frequently asked questions
Yes. There's no page limit, no file-size cap tied to a paid plan, and no watermark added to your merged file. The tool runs entirely in your browser.
No. Every PDF you add is read and merged directly in your browser's memory using JavaScript. Nothing is sent over the network, so your documents stay private.
There's no hard limit from the tool itself. Very large batches may be slower depending on your device's memory, since everything happens locally.
Yes. Each file you add shows a thumbnail of its first page along with its page count, so you can confirm you've picked the right file without opening it separately.
Yes. After adding your files, drag them by the grip handle into the order you want. This works with touch on phones and tablets too, not just a mouse. The merged PDF follows that top-to-bottom order.
Yes — after merging, tap "Preview PDF" to page through the combined result before you download it.
The tool checks each file as you add it and flags anything it can't read, naming the specific file, so you can remove or replace it before merging rather than the whole merge failing partway through.
No. Pages are copied as-is, so text, images, and formatting stay exactly as they were originally.