Compress PDF
Reduce file size without losing quality. No upload required.
About PDF Compression
Our browser-based compressor reorganises PDF internal objects and removes redundant data to reduce file size. Works best on PDFs with duplicate objects. For PDFs with large embedded images, savings may vary. All processing is done locally — your file is never uploaded anywhere.
Other PDF Tools
Compress PDF Online — Reduce File Size Without Losing Quality
Sending a PDF over email only to get rejected because it's too large? CliqTools's free PDF compressor reduces your file size significantly while keeping the content readable and clean. No need for Adobe Acrobat or any desktop software — just upload, compress, and download. The whole process runs in your browser, meaning your documents are never stored on any external server. It's ideal for compressing scanned PDFs, large presentations, portfolios, and reports. Works great on Chrome, Firefox, Safari, and Edge.
Frequently Asked Questions
How much can CliqTools reduce my file size?
It varies by file. PDFs with lots of embedded images tend to compress the most. Text-heavy PDFs with few images may reduce less.
Will compression affect text quality?
Text is not compressed — only images are optimized. Your text will remain sharp and fully readable.
Can I compress a password-protected PDF?
You'll need to unlock the PDF first using the Unlock PDF tool, then compress it.
Does the tool store my compressed file?
No. Everything happens in your browser. Once you close the tab, the file is gone from memory.
Have questions or need help? We're happy to assist.
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