Free PDF Compressor Online – Reduce PDF File Size Instantly
Compress PDF files online to reduce size
Features
- Reduce PDF size up to 90%
- Maintains readability
- No file size limit
- Secure processing
- No registration required
- Free unlimited use
Frequently Asked Questions
There's some quality trade-off at higher compression levels, but text stays fully readable at every setting — you control how aggressive the compression is.
Yes, completely free with no limit on how many files you compress.
It depends on the PDF's content — files with scanned images or photos usually shrink the most, while text-only PDFs are already fairly small and compress less.
No — compression happens directly in your browser, so your document never leaves your device.
Yes, at the recommended compression levels text and layout stay intact — very high compression settings prioritize small file size over image sharpness, so pick a lower level if the PDF is going to be printed.
No fixed limit, though very large PDFs will take a bit longer to process since everything runs on your own device.
How to Use PDF Compressor
Using PDF Compressor is simple and free. No sign-up required.
- Upload your PDF file.
- Select compression level.
- Click 'Compress PDF'.
- Download the compressed PDF.
About PDF Compressor
PDF Compressor shrinks the file size of a PDF so it's easier to email, upload, or store — without making it unreadable. This is especially useful for PDFs with lots of scanned pages or embedded images, which tend to balloon in size. You choose the compression level, so you can balance smaller file size against image sharpness depending on whether the PDF is for printing or just quick sharing. Compression runs locally in your browser, so the file is never uploaded to a server.
All iLoveToolZone tools work directly in your browser — no software installation or account required.