Know your formats
Supported formats and limitations
Accepted formats are checked from file contents. Native browser codec support is required. Only still images are supported.
- Input formats
- JPGPNGWEBP
- Output formats
- JPGPNGWEBP
- Upscaling cannot recreate missing detail. Aspect-locked dimensions are rounded to whole pixels.
- Output is limited to 8192px per edge and 8 megapixels. Metadata and original encoding settings are not preserved.
Enter the desired width or height and keep the aspect-ratio box selected to calculate the other edge. Turning it off lets you set both dimensions and can stretch the image. PNG avoids lossy encoding, while JPG and WebP expose quality settings. Enlargement adds pixels without recreating fine detail.
Limits: 16 MiB per file, 8192px per edge, 8 megapixels. Batch input is limited to 8 files / 32 MiB, and retained batch outputs to 64 MiB. Metadata is discarded; color profiles and HDR may change.
A local workflow
How to use this converter
Your file contents stay in the browser as you work.
Choose an image.
Enter bounded dimensions and choose whether to preserve the aspect ratio.
Review the resized image and export a supported format.
A little more clarity
Frequently asked questions
Is resizing the same as changing print DPI?
No. Resizing changes pixel dimensions; print resolution metadata is a separate concern.
Is Image Resize available now?
This tool runs locally with JavaScript enabled. Check its supported formats and size limits before converting.