About Image Resize
Scale browser-supported images and export them as PNG, JPEG, or WebP while preserving aspect ratio when desired.
Image Resize redraws a browser-supported image at explicit dimensions or a percentage, with optional aspect locking. The result can be exported as PNG, JPEG, or WebP at the chosen quality.
How to use it
- Enter or select your source data.
- Adjust the available options and run the tool.
- Review, copy, or download the result.
Common use cases
- Create smaller upload, email, thumbnail, or social-media dimensions.
- Reduce oversized camera images before publishing them.
- Convert dimensions and format in one local operation.
Worked example
Resize a 4000×3000 photo to 1200 pixels wide and export WebP.
Limitations and responsible use
- Upscaling cannot recreate detail that is absent from the source.
- Extreme dimensions may exceed Canvas or device-memory limits even if the input file is under 25 MB.
- JPEG export replaces transparency with white, and Canvas may discard metadata.
Frequently asked questions
What does lock aspect ratio do?
Changing one dimension automatically adjusts the other to prevent stretching.
Should I resize or compress first?
Reduce dimensions first when they are larger than needed, then choose an appropriate output quality.