Merge PDF files offline, free in your browser
Combine, split, and rearrange PDFs without uploading them anywhere. PDFBench runs right in your browser and processes every file locally on your device. Free, no signup, and no software to install. Install it once and it works offline, too.
Upload, reorder, group small PDFs into grid pages, then export one merged file. Nothing leaves your browser.
Runs entirely in your browser and works offline. Your PDFs are never uploaded. A refresh clears the queue, so finish in one session.
Merge PDFs offline, without uploading
Most “free” PDF mergers send your documents to a server. PDFBench does not. Every file you add is opened, merged, and saved entirely on your own device, so nothing is ever uploaded. It is the simplest way to combine PDFs privately, and because it installs as an app, you can merge PDFs offline with no internet connection at all.
Why it is simpler than Acrobat
PDFBench skips the install and the account, and adds layout tools most free mergers do not have.
Works offline
Install it once, then merge PDFs with no internet. The whole tool runs on your device.
Nothing uploaded
Your PDFs are processed locally in the browser and never sent to a server.
No install needed
Open a browser tab and go. Nothing to download or update, though you can install it as an app.
No account
No signup, no login, no email wall before you can work.
Free
Every feature is free, with no trial timer and no upsell.
Grid and n-up
Put several PDFs on one sheet, a feature most free mergers lack.
Frequently asked questions
Can I merge PDFs offline?
Yes. PDFBench is an installable web app, so after your first visit it is cached on your device and you can merge PDFs with no internet connection at all. Every file is processed locally and never uploaded.
Do I have to upload my files?
No. Nothing is uploaded. Every PDF is read and merged right in your browser, so your files never touch a server and never leave your device.
Is it private and safe?
Yes. Because all the work happens on your device, your documents stay private. There are no accounts, no file tracking, and no server ever sees your PDFs.
Is it free?
Yes. PDFBench is completely free with no account, no signup, and no limits hidden behind a paywall.
Do I need to install any software?
No. PDFBench runs in any modern browser. You can optionally install it to your home screen for offline use, but there is nothing to download or update.
How many PDFs can I merge?
As many as you like. Keep adding files to the queue, in any order, before you combine and download.
Can I put several PDFs on one page?
Yes. Select files, pick a grid layout (such as 2×2 for four per page), and combine them onto a single sheet, an n-up layout most free mergers lack.
Can I split or rotate pages?
Yes. Split any multi-page PDF into separate pages, and rotate any page or grid member 90 degrees at a time.
What page sizes are supported?
A4 by default, with Letter optional. The chosen size is applied uniformly to every page in the merged file.
Does refreshing lose my work?
Yes. The working queue is kept in memory for privacy, so a refresh clears it. Finish your merge in one session.
Tell us what should be simpler
PDFBench is the first tool. Tell us which tedious task to simplify next.