How to Merge PDF Files (Free, No Sign-Up)

You have a contract in three pieces, a report split across four exports, or a stack of scanned pages that belong in one file. You don't need Acrobat or a desktop installer for that. The MyTools PDF Merger combines multiple PDFs into a single document in your browser — in under a minute, without creating an account.

What You'll Need

• A modern browser (Chrome, Firefox, Safari, Edge — desktop or mobile)
• Between 2 and 20 PDF files, each under 50 MB
• The order you want them in (the tool lets you rearrange before merging)

How to Merge PDF Files — Step by Step

Step 1: Open the tool

Go to MyTools — PDF Merger in your browser. No account, no installation, nothing to download.

The landing page with the drag-and-drop upload area.

Step 2: Upload your PDFs

Drag your PDF files onto the upload area, or click Browse files to pick them from your device. You can add up to 20 files at once. The tool rejects anything that isn't a PDF or exceeds 50 MB, so you'll know immediately if a file can't be merged.

Step 3: Set the order

Once your files are uploaded, each PDF shows up as a card with its filename, page count, and first-page thumbnail. Drag the cards into the order you want them in the final document — the merged PDF follows that sequence exactly. On mobile (and as a fallback on desktop), use the up/down arrow buttons next to each file.

Top-to-bottom in the list becomes first-to-last in the merged file. If page three of the combined PDF should be the cover letter, make sure the cover letter is third in the list. You can also rename the output file before merging — the default is merged.pdf.

Uploaded files with reorder controls, an Add more files button, and the output filename field.

Step 4: Merge and download

Click Merge PDFs. Processing finishes in a few seconds for most file sets. When it's done, a confirmation appears and the Download button becomes active — click it to save the combined PDF to your device.

After processing, the download screen confirms the merge and offers a Merge more PDFs button.

Tips & Troubleshooting

One of my files is over 50 MB. Each individual PDF has to stay under 50 MB. If one is too big, run it through the PDF compressor first — compressing usually cuts scanned PDFs by 60–80% without visible quality loss — then come back and merge.

My PDF is password-protected. Password-protected PDFs need to be unlocked before merging. Open the file in your usual PDF viewer, remove the password, save a copy, and merge the unprotected version.

The pages are in the wrong orientation after merging. The merger preserves each file's original orientation. If pages were sideways to begin with, they'll still be sideways after. Fix it with the PDF rotator either before or after merging.

I need to merge more than 20 files. Merge the first 20, then merge the result with the next batch. The merger handles previously merged PDFs the same as any other input.

Conclusion

Combining PDFs into a single document takes seconds with the right tool. Upload your files, drag them into the right order, click merge, and download — no account, no waiting, no quality loss. Everything stays on the device side; files are automatically deleted an hour after processing.

Ready to combine your PDFs? Try the PDF Merger for free →