Drop an image here or click to browse
JPEG, PNG or WebP · up to 50 MB
Help
About this tool
Drop any image to resize it by percentage or a target width, choose the output format (JPEG, PNG, WebP) and quality, and watch the new dimensions update live — click Convert to generate the re-encoded preview and see the resulting file size. JPEG is re-encoded with the MozJPEG codec and PNG with an indexed palette + OxiPNG, all inside optimized WASM running in your browser. Download the optimized image with one click — your image never leaves your device.
How to use
- Drop an image, or click to browse and select one.
- Choose the resize mode, output format and quality.
- Watch the new dimensions update live, then click Convert to generate the preview and file size.
- Click Download to save the optimized image.
Is my image uploaded anywhere?
No. Resizing, re-encoding and preview all happen in your browser using optimized WASM codecs. Your image never leaves your device.
Which formats can I export?
JPEG, PNG and WebP. JPEG is re-compressed with MozJPEG (quality slider), PNG uses an indexed palette with a color-count and dithering control, and WebP uses the browser's native encoder.
Can I just convert a format without resizing?
Yes. Pick the Auto resize mode and choose a new format or quality. The image keeps its original dimensions but is re-encoded.
Is there a size limit?
Input files are capped at 50 MB. The output image is clamped to a maximum of 8192 px on the longest side so the browser stays responsive.