Free Image Compressor
Drop a JPEG, PNG or WebP and see exactly how much smaller it gets. Free, no signup.
📁
Drag & drop an image
or click to select (PNG, JPEG, WebP up to 5MB)
Compressed on our server, then sent straight back — nothing is stored. Compresto for Mac compresses offline and never uploads anything.
Frequently Asked Questions
- How do I compress an image online?
- Drag and drop your JPEG, PNG or WebP file onto the compressor, then press Compress Image. You will see the exact size saving and a before/after comparison, and you can download the smaller version — no signup, no watermark.
- Is there a file size limit?
- This free online tool accepts files up to 5 MB and allows 5 compressions per hour. Compresto for Mac has no size limit and no hourly cap.
- Can I compress HEIC photos?
- Not with this online tool. HEIC compression is available in Compresto for Mac, which reads HEIC straight from your Photos library without a conversion step.
- Can I compress many images at once?
- This tool compresses one image at a time. Compresto for Mac compresses entire folders in a single drag, offline, without uploading anything.
- Does this tool upload my images?
- Yes. Images are sent to the Compresto compression API, compressed, and returned. They are not stored. If you would rather nothing left your machine, Compresto for Mac compresses entirely offline.
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Need more power?
Compresto for Mac offers batch processing, hardware-accelerated compression for videos, images, GIFs, and PDFs — all from your desktop.