Which method should I choose?

Start with forms and annotations: it locks the interactive parts while keeping the text searchable and the file small. Choose full raster only when you need every trace of hidden or croppped-away content gone, and accept that the text stops being selectable.

Is Flatten PDF really free?

Yes — every tool on PDF Love is free, with no account, no email, no trial period, and no watermark stamped on your output. There is no file-count limit and no daily quota.

What happens to my files?

They never leave your device. This tool runs entirely inside your browser using WebAssembly, so your file is read from local memory, processed locally, and handed straight back. Nothing is uploaded, which is why it still works with your Wi-Fi switched off.

Is there a file size limit?

There is no limit imposed by us. Because the work happens on your own device, the practical ceiling is your available memory — comfortably a few hundred megabytes on a normal laptop or phone.

Does it work on a phone or tablet?

Yes. The site is built mobile-first and works in any modern browser on iOS, Android, Windows, macOS, and Linux. There is nothing to install.

Flatten a PDF

Merge form fields, annotations, and layers into the page.

Choose PDF files

or drag and drop them here

Processed on your device · nothing is uploaded

Runs entirely in your browser
No upload wait
Free and unlimited

About Flatten PDF

Flattening bakes everything into the page content: filled form fields stop being editable, comments become permanent marks, and hidden layers are resolved. The result renders identically in every viewer.

How to flatten PDF

1
Drop your PDF files onto the box above, or click to browse for them.
2
Adjust the settings if the defaults are not what you need.
3
Press Flatten PDF. The work happens on your device, so the time it takes depends on your machine rather than a queue.
4
Download the result. Nothing is stored, so grab it before you close the tab.

Questions about flatten PDF

Which method should I choose?: Start with forms and annotations: it locks the interactive parts while keeping the text searchable and the file small. Choose full raster only when you need every trace of hidden or croppped-away content gone, and accept that the text stops being selectable.
Is Flatten PDF really free?: Yes — every tool on PDF Love is free, with no account, no email, no trial period, and no watermark stamped on your output. There is no file-count limit and no daily quota.
What happens to my files?: They never leave your device. This tool runs entirely inside your browser using WebAssembly, so your file is read from local memory, processed locally, and handed straight back. Nothing is uploaded, which is why it still works with your Wi-Fi switched off.
Is there a file size limit?: There is no limit imposed by us. Because the work happens on your own device, the practical ceiling is your available memory — comfortably a few hundred megabytes on a normal laptop or phone.
Does it work on a phone or tablet?: Yes. The site is built mobile-first and works in any modern browser on iOS, Android, Windows, macOS, and Linux. There is nothing to install.

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