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Resize image
Resize an image while preserving aspect ratio or using exact dimensions.
Processing happens in your browser; we do not upload your file.
ActiveImageFree
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Embeddable code: coming soon
Coming soon: this section will be available when the tool moves to its next phase.
API: coming soon
An endpoint to use this tool from your backend; not available yet. Meanwhile, the Embeddable code runs in your browser with no server.
About this tool
Resize image changes image dimensions, with aspect ratio on by default and output in compatible formats.
How to use
- Select a PNG, JPG/JPEG or WebP image.
- Review original width, height, size and type.
- Change width, height or scale percentage.
- Keep aspect ratio enabled to avoid distortion, or disable it for exact dimensions.
- Choose output format and download the resized image.
Use cases
- Reduce a large image before uploading it to a website.
- Create an exact-size version for a post.
- Scale a screenshot or photo by percentage.
Limits
- Maximum: 8000 px per side and 64 megapixels per output.
- Very large dimensions can consume more browser memory.
- Upscaling a small image does not improve its quality.
Privacy
Processing happens in your browser — we don't upload your files.
Common errors
- Empty, zero, negative or non-numeric values.
- Dimensions too large to process reliably.
- A damaged image or one the browser cannot decode.
Technical notes
- Resizing uses the browser canvas.
- WebP output depends on actual browser support.
Related tools
Technical details
- ID
- image-resizer
- Slug
- /en/tools/resize-image
- Backend
- Not required
- AI
- Not required
- API
- Planned