Free PDF tool
Compress PDF
Make a PDF small enough to email — all of it in your browser, so nothing is uploaded.
Free · No sign-up · No watermark · Files never leave your browser
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How to compress a PDF
Step 1
Drop a PDF into the box above — up to 100 MB.
Step 2
Pick Lossless to keep the text selectable, or Balanced and Strong to redraw the pages as images — smaller files, but the text stops being selectable in both.
Step 3
Click Compress PDF, then compare the before and after size.
Step 4
Download the smaller file. The whole job ran in your browser tab.
Your file never leaves your browser
Everything this tool does happens in your browser tab. The PDF is opened, processed, and rebuilt by code running on your own device — it is never uploaded, so there is no server copy, no retention policy to read, and nothing to breach. Close the tab and it is gone.
Frequently asked questions
Is this PDF compressor really free?
Yes, with no catch and no pro tier holding back the good settings. All three compression modes are open to everyone, there is no daily quota, and nothing is stamped on the result. Our paid bank-statement converter pays for this page.
Do my PDF files get uploaded to a server?
They do not. Compression runs on your device, so the file is never sent to us or to any third party. Open your browser's network tab and what you will see is this page's own code — including the page-rendering engine that Balanced and Strong load — plus an anonymous usage count, and nothing whatsoever of your file.
How much smaller will my PDF get?
It depends entirely on what is inside it. Lossless mode rewrites the file structure and drops unused objects, which is usually a modest saving on a text PDF — sometimes only a few percent. Balanced and Strong both redraw every page as an image, which cuts scanned and image-heavy PDFs dramatically; Strong shrinks further than Balanced because it redraws at a lower resolution and quality. Neither one keeps the text selectable.
Will compressing reduce quality?
Lossless mode does not touch your content at all — same pages, same text, same images, just a tidier file. It is the only mode that leaves the text selectable. Balanced and Strong both trade quality for size by redrawing each page as an image, which is what turns the text into part of the picture; Balanced keeps more detail, Strong squeezes harder. Start with Lossless and only move along if the file still is not small enough.
Is there a limit on file size?
Each file has to be under 100 MB. That guard exists because the compression happens inside your browser tab, and a bigger file risks the tab running out of memory mid-job. There is no daily limit — compress as many files as you like, one at a time.
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