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Compress PDF & Images — Free, No Upload

Shrink PDF and image file sizes with smart, browser-based compression — including automatic PNG to WebP conversion with alpha detection.

🔒 Files never leave your device ⚡ No signup required 💯 Completely free
🗜️ Launch File Compressor — Free →
Opens instantly in your browser. No install, no account.
How it works
1
Upload files
Drop in a PDF or one or more images — batches are supported.
2
Preview the estimate
See a live estimated size before you commit, and pick your compression format.
3
Download compressed files
Get your smaller files individually, or all at once as a ZIP.
Why File Compressor
✓PNG → WebP conversion (60–80% smaller)
✓Automatic alpha channel detection
✓Batch-compress multiple images at once
✓PDF re-render compression
✓Live size estimate before you download
✓Works on both PDFs and images
Frequently asked questions
Does this compress PDFs, images, or both?

Both — it handles PDF re-render compression and smart image compression, including PNG to WebP conversion.

How much smaller will my files be?

It depends on the file, but WebP conversion with alpha detection typically saves 60–80% on PNGs.

Can I compress multiple files at once?

Yes, batch compression is supported for images, with a ZIP download for all results.

Is my file uploaded anywhere?

No — compression runs entirely in your browser, your files never leave your device.

Is it free?

Yes, completely free with no file limits.

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