Drop your PDFs here
or browse your files
One PDF at a time — pick your quality below.
Add your PDF
Pick the file you want to shrink. It never leaves your device.
It slims down
FileFlow rebuilds every page lighter, right inside your browser.
Download the smaller file
Save your compressed PDF instantly. Nothing was uploaded.
Compress PDF shrinks the file size of any PDF so it is light enough to email, upload or share — all processed privately on your own device. Pick a quality level to balance size against sharpness, then download a smaller PDF in seconds. Ideal for getting bulky scanned documents under attachment limits.
Frequently asked questions
How much smaller will my PDF get?
It depends on the original — image-heavy and scanned PDFs often shrink by 50–80%, while text-only files compress less because they are already small. Use the quality slider to find the right balance.
Will the text still be selectable after compressing?
To achieve real size savings the compressor rebuilds each page as an optimised image, which means selectable text becomes part of the picture. If you need to keep searchable text, use a lower compression setting or the Merge tool instead.
Does compressing ruin the quality?
You stay in control with the quality slider. Higher settings keep pages crisp with a modest size drop; lower settings maximise savings. Preview the result before you download.
Are my files uploaded to a server?
No. FileFlow runs entirely in your browser using JavaScript — your files are read, processed, and saved on your own device and never travel across the internet. There is literally no server to upload to.
Is it really free? Do I need to sign up?
Yes, it is completely free with no account, no email, and no watermark. Lightweight ads keep the tools free for everyone — there is nothing to install and no limits to unlock.