Why this tool
A private way to compress PDFs.
Most online PDF compressors upload your document to a remote server. This one does not. Your file is read, compressed, and rebuilt entirely inside your browser, so sensitive documents like contracts, statements, and scans never leave your device. There is no sign-up, no watermark, and no daily limit.
Pick a compression level to trade file size against quality, then download the smaller PDF in one click. It works best on scanned and image-heavy PDFs, which are usually the largest files people need to shrink for email attachments and upload forms.
Frequent asks
PDF compression, answered.
Is this PDF compressor free to use?+
Yes. The Eleventor PDF compressor is completely free with no sign-up, no watermark, and no usage limits.
Are my PDF files uploaded to a server?+
No. Compression happens entirely in your browser using JavaScript. Your PDF never leaves your device, so it is private and secure.
How much can I reduce a PDF file size?+
It depends on the file. Scanned or image-heavy PDFs usually shrink the most. You can choose Light, Medium, or Strong compression to balance file size against quality.
Does compressing reduce the quality of my PDF?+
The tool re-renders each page as a compressed image, so pages stay readable but text becomes part of the image and is no longer selectable. This works best for scanned and image-heavy PDFs.
Can I use it on mobile?+
Yes. It works in any modern browser on desktop and mobile. Larger PDFs may take longer on lower-powered devices.
