Optimize PDF — Compress & Shrink PDF Files
Reduce PDF file size for email and upload without leaving your browser. Free, no signup.
Compress to an exact file size
For forms and portals with a size limit — these keep trying until the file fits.
Optimize tools make a PDF smaller so it is easier to email, upload or store. Compress PDF lets you choose a quality level, and the fixed-size versions, such as Compress PDF to 100 KB, 200 KB, 500 KB, 1 MB or 2 MB, automatically try stronger settings until the file fits the limit a website or form asks for.
Compression works by re-rendering each page as an image, which gives large savings on scanned and photo-heavy documents. Because of that, text in the compressed file is not selectable, so keep your original if you need the text.
Frequently asked questions
How do I compress a PDF to a specific size?+
Use one of the size-specific tools, for example Compress PDF to 200 KB. It tries stronger compression until the file fits.
Why can I not select text after compressing?+
The pages are rebuilt as images to save space, so the text layer is not kept.
Is my PDF uploaded to compress it?+
No. Compression runs entirely in your browser.
Everything here runs in your browser — files are never uploaded. Browse all tools →