Utilix

Design & color · Image Client

Image Converter

Convert images between WebP, JPEG, PNG, and AVIF formats in your browser. No upload required — all processing is done locally using WebAssembly. Supports files up to 10 MB.

Enter values above to see the result.

How it works

Converts images between WebP, JPEG, PNG, and AVIF formats entirely in your browser using WebAssembly. Files up to 10 MB are supported. Nothing is uploaded to a server.

Step by step

  1. 1Upload an image file (JPEG, PNG, WebP, AVIF, GIF, or BMP).
  2. 2Select the output format: WebP is recommended for web use.
  3. 3Adjust quality (1–100) for lossy formats like WebP, JPEG, and AVIF.
  4. 4Click Download to save the converted image.

Examples

Convert PNG to WebP

WebP typically reduces file size by 25–35% compared to PNG with similar quality.

Inputs

outputFormat:
webp
quality:
85

Result

Frequently asked questions

Is my image uploaded to a server?

No. All conversion happens in your browser using WebAssembly (WASM). Your image never leaves your device.

Which format should I use for web images?

WebP is the best choice for most web images — it offers smaller file sizes than JPEG and PNG with comparable quality, and is supported by all modern browsers. AVIF is newer and even more efficient but has slightly less browser support.