Compress PDF to 1MB

Drop your PDF into the box above and press Compress. The tool is already set to a 1MB target, so it automatically applies the lightest compression that gets you under 1MB, 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 1MB 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 1MB, text stays perfectly sharp because it remains real vector text — only embedded images are downsampled.

Any modern browser with WebAssembly support: Chrome, Edge, Firefox, Safari, Brave, Opera and Vivaldi, on desktop and mobile alike. There is no minimum specification beyond that — older or lower-powered devices simply take longer on large documents.

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.

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. The interface is fully responsive and the engine runs on iOS and Android. Bear in mind that mobile devices have less memory, so very large files (over roughly 50 MB) may be slow or fail on older phones.

Because it was already efficient. Files that are mostly text, or that were exported by a tool which already downsampled its images, hold very little recoverable waste. Large savings come from oversized embedded images — where there are none, there is little to reclaim.

Not directly. Encrypted PDFs must have their password removed first, which you can do in Acrobat, Preview on macOS, or by opening the file and re-printing it to PDF with the password supplied. Then compress the unprotected copy here.

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.