Compress PDF
Reduce the file size of a PDF without wrecking its readability. Everything happens on your device.
Drop your PDF here
or choose a file — processed entirely in your browser
What this does
SubmitReady looks for large embedded images inside your PDF and re-encodes them at a smaller size and quality, then repacks the document more efficiently. Text and vector content are left untouched, so sharpness and selectability are preserved.
When you need it
Use this when a PDF is too large to email, too large for a slow connection, or just larger than it needs to be — for example, a scanned document or a PDF exported with high-resolution photos.
How it works
We never degrade text into a blurry image just to save space. If a document has no compressible images, compression gains will be small and honest — we won't pretend otherwise.
Privacy
Your file is processed entirely in your browser using JavaScript running on your device. It is never uploaded to a server.
Frequently asked questions
- Will compressing reduce quality?
- Only image quality inside the PDF may be reduced, and only as much as needed. Text stays crisp because it's never rasterized.
- Is there a file size limit?
- Files up to 150 MB are supported, since everything runs in your browser's memory.
- Need an exact size like 1 MB?
- Use Compress PDF to 1 MB (or 500 KB / 2 MB) instead — those target an exact ceiling.