PDF Compressor – Free Online Tool
Reduce image-heavy PDF size using adjustable page rendering quality and grayscale. Free, browser-based, with no file upload to our servers.
PDF: 25 MB each; total 25 MB; max 1 file(s). Files processed in your browser. Up to 100 pages per PDF.
Choose files to begin.
Compare original and processed result
Original
Processed result
About PDF Compressor – Free Online Tool
Reduce image-heavy PDF size using adjustable page rendering quality and grayscale.
How to use
Choose one PDF up to 25 MB. Choose JPEG quality, output rendering resolution and optional grayscale. Click Process to preview the output, then Download when you are happy. Compare the reported output size with the original, and check whether the resulting image-based PDF meets your needs.
Supported files and limitations
PDF documents up to 25 MB each; up to 100 pages per PDF. Large PDFs may use significant browser memory; try fewer pages or smaller image sizes on mobile. Compression rasterizes pages into JPEG images and may remove searchable text, hyperlinks and selectable fonts. Size reduction is not guaranteed.
Privacy
Files are processed locally in the browser with packaged JavaScript libraries; they are not sent to the Toolsxar server. Browser memory is released when you close or reload the page.
Frequently asked questions
Is this tool free?
Yes, all editing and download functions on this page are free.
Do I need an account?
No account or subscription is required.
Are my files uploaded?
No, PDF processing takes place in your browser.
Why is my PDF not opening?
Encrypted, invalid or unusually complex PDFs may not be supported.
Can I use this on a phone?
Yes, although larger PDFs may need a computer with more available memory.
What is the maximum file size?
Each PDF is limited to 25 MB. The total limit and file count are displayed above.