π¦ PDF Compressor
Click to upload PDF or drag and drop here
Max 100MB Β· Client-side processing Β· No upload
π Compression Result
π How to Use
Free online PDF compression tool. Reduce PDF file size for easy storage and sharing.
Steps: 1) Upload PDF file 2) Adjust quality slider 3) Click Compress 4) Download the compressed file.
PDF Compressor: calculation logic
This tool uses client-side technology to reduce PDF size by compressing embedded images. Text content is not affected. All processing happens in your browser β files are never uploaded.
π― Use Cases
- Email Attachments: Compress large PDFs to meet email size limits
- Website Uploads: Meet file size requirements for online forms
- Storage Optimization: Save disk space by reducing PDF sizes
- Quick Sharing: Smaller files share faster via messaging apps
β FAQ
Will text become blurry after compression?
No. This tool primarily reduces the size of embedded images. Text content remains sharp. However, scanned PDFs (image-based) may lose clarity at lower quality settings.
What quality setting is recommended?
For most documents, 75-85% quality provides a good balance β preserving visual quality while reducing file size by 40-60%. For archival purposes, 30-50% is acceptable.
Why didn't my file size decrease much?
If your PDF is mostly text with few images, compression will have limited effect. Text-based PDFs are already small. Compression works best on image-heavy PDFs.
Can I compress encrypted PDFs?
No. Encrypted PDFs cannot be read in the browser. Please unlock the PDF first, then use this compressor.
Is it safe and private?
Yes. All computation happens on your device β Quality, other values and other inputs stay in your browser. Your files never leave your device. You can even use it offline after the page loads.
Frequently Asked Questions (FAQ)
Is this PDF compressor completely free?
Yes, 100% free. No registration, no usage limits, no hidden fees. Use for personal and commercial projects.
Are my PDF files uploaded to a server?
No. Everything runs locally: Quality and other values are processed on your device, never sent to a server. Your files never leave your device.
Will compression reduce PDF quality?
You can adjust the quality slider. High quality (80-90%) preserves good visuals while reducing size by 30-50%. Lower quality (30-50%) can reduce 70-90% but image quality drops noticeably. Text content is unaffected.
What file size is supported?
Files up to 100MB are supported. Larger files may cause browser memory issues.
Does it work on mobile?
Yes, fully responsive design. Works on phones, tablets, and desktops. No app installation needed.