All Tools VerseCompress PDF
Optimize and shrink a PDF in your browser by re-saving it efficiently and stripping metadata. Free, private, no upload.
- Runs in your browser
- Nothing uploaded
- Free, no sign-up
Shrink a PDF by re-saving it efficiently with compressed object streams and optionally stripping metadata. Runs entirely in your browser, so your file is never uploaded. Works best on PDFs exported without optimization.
Drag and drop a PDF here, or click to browse
One PDF file
How to Use Compress PDF
- Drag and drop a PDF onto the drop zone, or click to browse.
- Leave Strip metadata ticked to also remove the title, author, and producer fields for a slightly smaller, cleaner file.
- Click Compress PDF. The tool re-saves the document with compressed object streams.
- Check the before and after size, then click Download.
Frequently Asked Questions
Is my PDF uploaded anywhere?
No. The optimization runs entirely in your browser with the pdf-lib library, so the file never leaves your device. It is safe for confidential documents.
How does it reduce the size?
It rewrites the PDF using compressed object streams, which pack the internal objects more tightly, and it can strip metadata. PDFs exported by older tools or office software often shrink noticeably this way.
Why did my file barely change?
If a PDF is already optimized, or it is mostly large scanned images, structural re-saving has little to remove. This tool does not re-encode images, so image-heavy scans see small savings. For those, reducing the scan resolution before export helps more.
Does it change the content or quality?
No. Text, images, and layout are preserved exactly. Only the file structure is rewritten and, if you choose, metadata is cleared. Quality is identical.
Will it break my PDF?
No. The output is a standard, valid PDF that opens in any reader. Your original file is never modified, only the downloaded copy is new.
Is it free?
Yes, completely free with no signup and no watermark.
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