Compress a PDF to under 1 MB

Your PDF never leaves your phone or computer, which matters for certificates, IDs and statements you upload to forms. It is free, with no watermark and no sign-up, and the text in your PDF stays sharp: only images are re-compressed.

Text, fonts and vector drawings in a PDF are already compact, so the size comes almost entirely from images (scans and photos). The tool re-compresses them step by step, from gentle (2400 pixels, high quality) to strong (500 pixels), and keeps the gentlest step that fits under your limit, trying at most 4 steps. Colours are never changed. A 10-page phone scan of 5–10 MB usually fits in 1 MB with sharp text; fitting it in 200 KB means about 20 KB per page, which is readable but softer.

A PDF made from Word or a web page is mostly text and may already be 100–300 KB; it can't shrink much further. If even the strongest step is above your limit, you still get the smallest version we could make, and the result says how close it came. Splitting the PDF into parts (Split PDF) or removing pages you don't need (Organize PDF) usually solves it.