Skip to main content
PDF Tools

Merge PDF

Combine multiple PDF files into one. Set your own order — fast and easy.

How to Merge Multiple PDFs

Combine multiple PDF files into one in the order you choose.

  1. 1

    Click 'Choose PDFs' or drop up to 20 PDF files into the upload area.

  2. 2

    Rearrange the order as needed by dragging files, or remove and re-add them.

  3. 3

    Click the 'Merge' button.

  4. 4

    Once processed, click 'Download' to save your merged PDF.

Frequently Asked Questions

How many PDFs can I merge at once?

Up to 20 files, with a maximum of 25 MB each (free plan).

How is the merge order determined?

Files are merged in the order they were added. Remove and re-add a file to reposition it.

Will the output file be compressed?

No. The original quality is preserved. To reduce file size, use 'Compress PDF' afterward.

Can I merge password-protected PDFs?

No. You'll need to decrypt them first.

Can I merge PDFs from different sources?

Yes. As long as they are valid PDF files, different sources and languages are all supported.

To merge PDFs, the fastest way is to use an online tool: open the Merge PDF page on PDF Tools (pdf-vert.com), add 2 to 20 PDF files in the order you want (up to 25MB each), click "Merge," and download the combined file. The whole process takes about a minute. It's completely free — no account, no software installation required, and it works in any browser on both desktop and mobile.

Why Combine Multiple PDFs into One

Scattered files are a headache when sharing or archiving: recipients have to open each one separately, attachments get missed when forwarding, and cloud folders turn into a mess fast. Merging related documents into a single PDF means the other person only needs to open one file, the page order is exactly what you intended, and nothing gets misread. It's even more practical for printing — send one file, print once, no risk of pages ending up out of order.

Three Common Use Cases

Job applications are the most obvious example: your resume, portfolio, and scanned certifications are often three separate PDFs from three different apps. Merge them into one before sending, and the hiring manager doesn't have to dig through a pile of attachments — plus you can make sure your portfolio follows right after your resume. The second use case is business documents: combine a quote, spec sheet, and company overview into one file so nothing gets dropped when a client forwards it to their manager. The third is education and reports: teachers can compile several weeks of handouts into one convenient packet for students to review, or a group can consolidate individually written chapters into a single complete report — either way, it's done in minutes.

Practical Tips: Order, Pages, and File Size

Page order is the most common mistake when merging PDFs online. This tool arranges files in the order they're added, and each file in the list is numbered so you can see the sequence at a glance. If something's out of place, just remove that file and re-add it. A simple habit that helps: rename your files with a prefix like 01, 02, 03 before uploading, then select them in numeric order. Double-checking the sequence one more time before you hit merge doesn't hurt either. Two other situations worth knowing: if you only need certain pages from a document, use Split PDF to extract just those pages before merging — the result will be much cleaner. And since the merged file size is roughly the sum of all the individual files, if you're sending it by email you can run it through Compress PDF afterward to shrink it down and avoid hitting attachment limits.

Security Considerations for Sensitive Documents

The files you're merging — contracts, resumes, quotes — are often sensitive, so it's worth taking a quick look at a tool's privacy policy before uploading. PDF Tools processes everything server-side, and uploaded files are automatically deleted after 2 hours. No account registration is required, which means none of your personal information is stored. The interface is available in 9 languages, and the site offers 9 tools in total — including conversion, compression, rotation, and splitting — so you can handle all your PDF needs in one place.