Merge PDF files

Combine multiple PDFs into a single file, in the order you choose. Everything happens in your browser: your documents are never uploaded anywhere.

Drag your PDFs here or click to choose You can select several files at once

This tool needs JavaScript to work. Please enable it in your browser to merge your PDFs.

🔒 100% private — your files are processed on your device and never uploaded anywhere.

Works with files up to ~100 MB combined (depending on your device's memory).

How it works

  1. 1

    Upload your PDFs

    Drag your files in or select them from your device. Add as many as you need.

  2. 2

    Put them in order

    Use the arrows on each file to arrange them in the final order before merging.

  3. 3

    Download the result

    In seconds you'll have a single PDF with every page, ready to download.

How to merge PDF files without installing anything

Merging PDFs is one of those tasks that comes up all the time: combining several invoices into one email, stitching together the scanned pages of a signed contract, or pulling the chapters of a report that arrived as separate files. This tool handles it right in your browser, with no software to install and no account to create.

Unlike a generic PDF viewer, pages are copied exactly as they are from the original file: they aren't converted to images or recompressed, so the result keeps the same quality, the same selectable text, and the same internal links as the source PDFs. The more files you combine, the more you'll notice the difference compared to tools that rasterize every page.

You're in control of the final order: as soon as you add your files they appear in a list where you can move them up or down with a couple of clicks before generating the combined PDF. And since everything runs on your own device, there's no limit on how many times you can use it and no server to wait on — the file is generated instantly.

Note: this tool can't open password-protected PDFs. If one of your files has a password, remove it first with your regular PDF reader and then merge it here.

Frequently asked questions

Are my files uploaded to a server?

No. PDF Bolt merges your files right inside your own browser. Your PDFs never leave your computer or pass through any server.

How many PDFs can I merge at once?

As many as you need. The only limit is your device's memory; as a rule of thumb, it handles up to about 100 MB combined without trouble.

Will I lose quality when I merge PDFs?

No. Pages are copied as-is, without recompressing or converting them to images, so the result keeps the original quality and selectable text.

Can I choose the order of the files?

Yes. Before merging, you can reorder the files using the arrows in the list until they're in the order you want.

Does it work with password-protected PDFs?

Not directly — you'll need to remove the password from the PDF with another tool before merging it.

Is it free?

Yes, with no usage limits and no account required.

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