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About To ICO
What this tool does
This tool converts images between popular file formats such as PNG, JPG, WebP, AVIF, and BMP. The conversion runs entirely inside your browser using the Canvas API, so no file ever leaves your device. You can convert single files or batch-process multiple images at once, and the output respects the original resolution and color space.
Why use this tool
Different platforms and applications require specific image formats. Social media, email clients, and web frameworks each favor their own format for size, quality, or transparency support. Instead of installing desktop software or uploading files to a remote server, you can switch formats instantly while keeping your images private.
How it works
The browser decodes your source image into a raw pixel bitmap, then re-encodes it in the target format using built-in codecs. For lossy formats like JPEG, you can adjust the quality slider to balance file size against visual fidelity. For lossless formats like PNG, the full pixel data is preserved.
Pro tip
Need the smallest file size for web use? Convert to WebP at 80% quality. Most modern browsers support it, and you can cut file sizes by 25-35% compared with JPEG at the same visual quality.
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