About this tool
Select two or more PDFs and they are joined into a single document in the order you added them: scanned pages, chapters exported separately, receipts for an expense report, a cover letter and a CV. Every page is copied exactly, with its size, orientation, fonts, and links preserved.
Unlike upload-based merge sites there is no file size cap and no waiting in a queue, because the work happens on your device. To reorder files, remove them from the list and add them again in the order you want.
Everything happens inside your browser. Your file is never uploaded to a server: the conversion runs on your own device using WebAssembly, and the result is downloaded straight from memory. Close the tab and nothing is left behind.
How to use it
- Drop your PDF files into the box above, or click to browse. Nothing is uploaded.
- Click the button and wait a moment.
- Download the results individually or all at once as a ZIP.
Frequently asked questions
How do I control the order of the merged pages?
Files are merged in the order they appear in the list. Add them one at a time in the order you want, or remove and re-add to rearrange.
Are bookmarks and form fields kept?
Page content, links, and annotations are kept. Document-level bookmarks and interactive form fields are not carried over from the source files.
Do password-protected PDFs work?
Not yet. Remove the password in your PDF viewer first, then use the tool.
Is there a page limit?
No. Very large documents simply take longer, since everything is processed on your device.
Is this really free?
Yes. The site is supported by ads, and there are no limits on how many files you convert.
Are my files uploaded anywhere?
No. The converter runs entirely in your browser. Files stay on your device, which also makes it faster than upload-based converters for anything larger than a few megabytes.
Is there a file size limit?
The only limit is your device's memory. Images and audio of any normal size are fine; for video, files under about 500 MB work well on most laptops and phones.
Which browsers are supported?
Current versions of Chrome, Edge, Firefox, and Safari on desktop and mobile. Very old browsers without WebAssembly support will not work.