OOnDevice

Free Image Tools Online

Image tools that run on your computer — compress, convert, resize, crop, edit. Nothing uploads. Works on bad wifi or no wifi.

Edit, convert, and optimize images without uploading them to a third-party server. Compress JPGs and PNGs, convert between WebP and AVIF, resize to exact pixel dimensions, crop to any ratio, blur backgrounds, remove backgrounds with an AI model that runs in this browser tab, and extract color palettes — all on your computer with no upload step. Edits are non-destructive until you hit download, so you can try multiple settings and only save what you want. The full image toolkit is below.

Frequently asked questions

What image formats are supported?
JPG, PNG, WebP, GIF, and AVIF for most tools. The image converter supports all five. A few tools (background remover, color extractor) require JPG or PNG input for best results.
How does background removal work without a server?
Background Remover uses a quantized segmentation model (REMBG/U2-Net) that runs in a Web Worker via ONNX Runtime Web. The model downloads once (~30 MB) and is cached for reuse.
Is there a file size limit?
Practically speaking, images up to 50 MB process fine in modern browsers. Very large files may hit browser memory limits — if that happens, compress the image first, then re-process.