Compress PDF
Re-save a PDF with lighter internal structure to shave off size.
About the Compress PDF
This is a free, browser-based file tool on ToolsFlow. Use Quick Clean to re-save a PDF with a lighter internal structure while keeping its text selectable, or switch to Target Size and tell it exactly how many KB or MB you want — it re-renders the pages at a resolution/quality chosen to land on that number. There's nothing to install and nothing to sign up for — open the page, do the task, and you're done.
Frequently Asked Questions
Is the Compress PDF free to use?
Yes. It’s completely free, with no signup, subscription, or usage limits.
Do I need to install anything or create an account?
No. It runs entirely in your web browser — there's no software to install and no account required.
Is my data safe when I use this tool?
Yes. It runs client-side in your browser, so your files and text are processed on your own device and are never uploaded to a server.
Does it work on mobile devices?
Yes. It works on any modern browser, on phone, tablet, or desktop.
What does this tool actually do?
Re-save a PDF with lighter internal structure to shave off size, or, in Target Size mode, re-render it to hit a size you choose.
Is this the same as a shrink pdf size?
Yes — different people search for this task under different names. This tool covers it either way, for free.
How do I compress a PDF to an exact size?
Choose "Target size" as the mode, enter a number and pick KB or MB, then hit Compress. The tool re-renders every page as an image and searches for the quality level that lands closest to your target.
Will Target Size mode keep my text selectable?
No — hitting an exact size means each page is turned into a compressed image, so text stops being selectable or searchable. Use Quick Clean instead if you need to keep real text.