Does this upload my image anywhere?

No. Resizing happens entirely in your browser using the Canvas API. Your image is never sent to a server.

Will resizing reduce quality?

Shrinking is lossless-ish — the browser uses bilinear interpolation. Upscaling always loses quality. For best results, only downsize.

What's the max image size supported?

Browsers typically handle images up to ~16384x16384 pixels. Very large images may be slow or fail on low-memory devices.

Image Resizer

Image Tools· 9 tools

Free online image resizer. Upload an image and resize it to exact pixel dimensions, with optional aspect ratio lock. Supports JPG, PNG, and WebP. All processing happens locally in your browser.

Upload Image

Frequently Asked Questions

References

Responsive images — MDN Web Docs

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Frequently Asked Questions

References and sources

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