Reduce file size while maintaining quality
or to upload
Up to 100 files • Max 500 MB • PDF only
Compressing a PDF reduces its file size so it is easier to email, upload, or store. Large PDFs are often too big to attach to an email or upload to a form. Our free PDF compressor analyses and optimises the file structure and embedded images to produce the smallest possible file while keeping the content readable. Everything runs in your browser — no files are ever uploaded.
Upload your PDF
Drag and drop or click to select the PDF you want to compress.
Choose compression level
Select low, medium, or high compression depending on how small you need the file and how much quality you want to preserve.
Click Compress PDF
The tool will process your file and show you the new file size alongside the original.
Download the compressed file
Download your smaller PDF. If you are not happy with the result, try a different compression level.
Upload your PDF, pick a compression level, click Compress PDF, and download the smaller file. It takes under a minute.
Light and medium compression preserve excellent visual quality. High compression is best when file size matters more than sharpness.
No server-side limit. Very large files may take longer since processing runs locally in your browser.
Image-heavy PDFs often shrink by 50 to 80 percent. Text-only documents typically compress by 10 to 30 percent.
Yes. The tool runs in any modern browser on macOS, Windows, iOS, and Android.