Compress PDF
Reduce PDF file size in your browser by rebuilding the document. No upload required.
Runs in your browser — files never leave your device
How it works
The PDF is rebuilt with object streams, dropping redundant data to reduce its size.
It runs entirely on your device and shows the before/after sizes.
Frequently asked questions
- Is my PDF uploaded?
- No — optimization happens in your browser; the file never leaves your device.
- How much smaller will it get?
- This tool removes redundant and unused objects and packs the file efficiently. Gains vary — image-heavy PDFs benefit most from the image tools first.
Related tools
- Merge PDFCombine multiple PDFs into one file, right in your browser. Reorder before merging; nothing is uploaded.
- Split PDFSplit a PDF into individual pages or ranges locally and download the parts.
- PDF to ImageConvert PDF pages to PNG images locally using pdf.js. Each page becomes a downloadable image.
- Rotate PDFRotate all or selected PDF pages by 90° in your browser and download the result.
- Reorder & Delete PDF PagesReorder or remove pages from a PDF locally, then download the rebuilt document.
- Extract PDF PagesPull selected pages out of a PDF into a new file, entirely in your browser.