PDF Compress

Nothing is as reliably annoying as an upload form with a 5 MB limit and a PDF that weighs 12 MB. Usually it is the images: scanned pages at full resolution, photos with needlessly many pixels, graphics nobody needs at that size. PDF Compress targets exactly these spots and makes the file smaller without you having to rebuild the document.

Four presets cover everyday needs. Screen squeezes hardest and downscales images to 72 DPI - perfect for email and web when it is only about reading on screen. Ebook sits in the middle, good for documents you occasionally print. Printer and Prepress keep more quality for real print masters. You choose how hard to push and see the result.

Alongside the images, the tool optionally strips metadata too - author, creation date, leftover program traces - that bloats the file and, incidentally, reveals more about you than necessary. Less ballast means a smaller file and a bit of extra privacy for free.

For multiple files there is batch processing. Throw in a whole bunch of PDFs, pick a preset, and the tool works through them one after another. Handy when you want to shrink a folder full of scanned receipts or invoices in one pass.

Everything runs with pdf-lib and canvas re-encoding right in your browser. Your documents are not uploaded, not stored on a server and not shared with third parties. Especially with contracts, payslips or medical reports, that is the decisive difference from the usual compression sites that shovel your file onto their server first.

No account, no watermark, no signup. Open it, drop the file in, pick a strength, download. It also works offline once the page has loaded.