Image Quality Optimizer
Compare original and optimized image size, quality, format, and dimensions.
Processing happens locally in your browser. Your files and inputs are not uploaded to our servers.
How to use Image Quality Optimizer
- Choose an image and review its original size and dimensions.
- Select output format, quality, and optional maximum dimension.
- Create, compare, preview, and download the optimized image.
What Image Quality Optimizer does
Image optimization balances dimensions, format, and encoder quality. Results vary with the source image, so the tool reports actual output size rather than promising a fixed reduction.
Examples
- Compare JPEG and WebP output for a large photo.
- Resize a 4000-pixel image before publishing it online.
- Raise or lower quality while checking actual byte savings.
Frequently asked questions
Is my input uploaded?
No. This tool processes its input locally in your browser. Normal page requests do not include the contents you enter or select.
Is a smaller file guaranteed?
No. A high quality setting or format change can produce a larger file, especially when the source is already optimized.
Will it work in every browser?
The tool uses modern browser APIs. Current Chromium, Firefox, and Safari releases provide the best support; the page displays a clear error when a required capability is unavailable.