PDF Compressor
Shrink a PDF right in your browser — every page is re-rendered and re-saved locally, so the file never leaves your device. Pick a quality and download a smaller file.
How it works: each page is rendered to a JPEG at the quality you choose, then re-packaged into a new PDF. Lower quality = smaller file but softer text. Scanned or image-heavy PDFs shrink the most; already-optimised PDFs may barely change. The compressed file is image-based, so text is no longer selectable — perfect for sharing, not for editing.
A PDF that used to be 12 MB and refuses to email is usually a scanned document that nobody optimised. This tool re-encodes your PDF in the browser and hands the smaller file straight back to you, so you can attach it, upload it, or send it to a portal with a size cap.
How to use the pdf compressor
- Choose a PDF file from your device.
- Pick a quality level — higher quality keeps more detail and produces a larger file; lower quality shrinks harder.
- Press Compress PDF. The file is processed on your device, not on a server.
- When it finishes, press Download to save the smaller PDF.
Frequently asked questions
How much smaller will my PDF get?
It depends on the file. Image-heavy scans usually shrink the most; a PDF that is already optimised may barely change. Try a lower quality level for a bigger reduction.
Is my PDF uploaded anywhere?
No. The compression runs entirely in your browser, and the file is never sent to a server. It stays on your device.
Will compressing reduce quality?
Yes, to a degree — that is the trade-off for a smaller file. For mostly-text PDFs the drop is barely noticeable; for scanned photos, lower quality is more visible.
Is there a file-size limit?
There is no artificial cap. Very large PDFs may take a moment to process because the work happens on your own device.