Compress PDF to 500 KB
Compress a PDF to under 500 KB online for free. Runs in your browser, so your file is never uploaded.
Drag & drop PDF files here
or click to browse
100% Client-Side: Your files are processed entirely in your browser and never uploaded to any server.
PDF Compression Explained
PDFs can get large when they include high-resolution images, embedded fonts, scanned pages, or repeated resources. Smaller PDFs are quicker to upload, easier to email, and faster to open on mobile devices.
You can pick a compression level based on your goal: Low keeps more original quality, Mediumis a balance, and High aims for a smaller file size (especially helpful for image-heavy PDFs).
How do I compress a PDF to 500 KB?+
Add your PDF and click compress. The tool tries progressively stronger compression until the file is under 500 KB.
What if the PDF can't get under 500 KB?+
You get the smallest version it could reach, along with a message. Very large or image-heavy PDFs may not shrink that far without becoming hard to read.
Will the quality drop?+
Reaching a small size means converting pages to compressed images, so text can no longer be selected and quality goes down as the target gets smaller.
Are my files uploaded anywhere?+
No. Everything happens in your browser, so your documents stay on your device.