Disclaimer

Results vary by browser

Image encoding is performed by your browser. Output quality and file size for formats such as WebP and AVIF can differ between Chrome, Firefox, Safari and Edge, and between operating systems. We surface actual results rather than promises, but we cannot guarantee identical output everywhere.

No guaranteed file sizes

Target-size compression searches for a close match; it does not guarantee an exact size and will tell you when it cannot reach your target within its limits.

Format support

Some formats (AVIF encoding, HEIC decoding) depend on browser capabilities and are shown only when actually supported. We do not present unsupported features as if they work.

Trademarks

Platform names referenced in tools such as the social media resizer are trademarks of their respective owners. We are not affiliated with, endorsed by, or partnered with any of them, and recommended dimensions are provided for convenience only.