Compress PDF to 500KB

Drop your PDF into the box above and press Compress. The tool is already set to a 500KB target, so it automatically applies the lightest compression that gets you under 500KB, then hands you a download link. The whole process happens on your own device.

Most can. Text-heavy documents compress dramatically. Very long scanned documents — say 100+ pages of high-resolution photographs — may not reach 500KB while staying readable. In that case we return the smallest usable version and tell you the target was missed, so you can split the document instead.

We always try the gentlest setting first and only escalate if the file is still too large. For typical business documents at 500KB, text stays perfectly sharp because it remains real vector text — only embedded images are downsampled.

Nothing persists. The compressed result lives in your browser tab's memory until you download it, and everything is discarded the moment you close or refresh the page. There is no server-side copy because the file was never sent anywhere.

Yes, in two ways. Pick one of four calibrated presets for a quality-led decision, or switch to Target Size mode and enter an exact figure in KB or MB. Target mode steps through progressively stronger settings and stops at the highest quality that still fits your limit.

Yes, with no file limits, no watermarks and no account. Because processing happens on your device rather than our servers, there is no per-file cost to recover and therefore no reason to meter your usage.

Less Compression favours quality with images near 200 DPI. Recommended is the balanced default at roughly 144 DPI. Extreme maximises size reduction at about 96 DPI. Target Size ignores presets entirely and searches for the best quality that fits your specified limit.

Rarely, and it is usually counterproductive. The first pass already removes structural waste and downsamples images; a second pass mostly re-encodes already-degraded JPEGs, which loses more quality for negligible gain. Prefer a stronger preset on the original file instead.

Yes. Drop in as many files as you like — they are queued and processed one after another so memory stays under control. Each file gets its own progress bar and download button, plus there is a Download All option.

Yes. Bookmarks, the table of contents, internal cross-references, hyperlink annotations and interactive form fields all survive compression. Only the encoding of images and content streams is altered — the document's structural and navigational layers are preserved.