Free Online Compress PDF
Shrink a PDF so it fits an upload limit — set a target size in KB and download a smaller file. Runs securely; nothing is stored.
How it works
Frequently Asked Questions
Yes — enter a target maximum KB and the tool tunes the image quality to land the PDF under it, ideal for portals that cap upload size.
No. Compression runs securely, so your document is never stored.
This tool rasterises pages to shrink them dramatically, so the result is image-based. It is best for scanned documents and forms; for text PDFs where you must keep selectable text, compress more gently with the High level.
Compress a PDF online for free and reduce its file size so it fits strict upload limits — you can even set a target maximum in KB, like 200 KB or 500 KB, which exam portals, job sites and government forms often require. The tool re-renders each page and re-compresses it securely, then rebuilds a smaller PDF you can download. Because everything runs securely, your document is never stored, and there is no watermark or sign-up. It works best on scanned or image-heavy PDFs, where it can cut the file size dramatically while keeping the pages clearly readable.