What is Compress PDF?
Rewrite a PDF with compact object streams in your browser. This can reduce structural overhead, though image-heavy documents may change little.
Choose a PDF and select Compress. The browser rewrites its document structure and reports the resulting file size.
How to use this tool
- 1
Select a PDF to optimize its document structure.
- 2
Run the browser-based rewrite with compact object streams.
- 3
Compare the resulting size; image-heavy PDFs may not shrink.
Features
- Compact PDF object streams
- Local processing and size comparison
- Clear results even when an image-heavy file does not shrink
Example
A form-heavy PDF may shrink because unused structural overhead is removed; a scanned photo PDF may not.
Frequently asked questions
Will every PDF become smaller?+
No. This browser tool optimizes PDF structure but does not recompress embedded photos. Image-heavy PDFs may stay the same size or grow.
Is there a quality slider?+
This method keeps embedded image data unchanged, so there is no image-quality setting.
About this compress pdf
Compress PDF is part of itotii’s free collection of browser-based utilities. It is designed for a quick workflow: find the tool, complete the task and keep control of your files and data.
Output depends on your input and browser support. Review the result before using it in a published or important document.