Free Image Resizer
Resize width and height locally before upload, review, storefront, documentation, or final handoff.
Resize image dimensions locally before upload, storefront, or docs.
About this tool: Free Image Resizer
Resize image width and height locally before upload, review, storefront, documentation, or handoff. No upload required — everything runs locally in your browser for privacy and speed.
Common use cases
- Keep aspect ratio on for most product and social images.
- Resize before compressing when the source file is oversized.
Resizing without softening the image
Resizing is not just a number change: enlarging invents pixels and shrinking discards them, and both change how sharp the result looks. Resize to the size you will actually display rather than to a round number.
Getting the size right
- 1
Resize down whenever you can
Downscaling is nearly free in quality terms. Upscaling always softens, no matter which algorithm is used.
- 2
Preserve the aspect ratio unless you mean it
A stretched face is the most visible image error there is; lock the ratio unless the distortion is deliberate.
- 3
Match the layout, not the source
Ship the largest size the layout will ask for, at 2x for high-density screens, and nothing bigger.
Image resizing questions
- Can I enlarge an image without losing quality?
- No. Enlarging invents pixels; the result is always softer than the original, though a good algorithm hides it well at small factors.
- What size should I export for the web?
- The CSS width times two for high-density screens, capped at the largest size the layout will ever request.
- Is resizing local?
- Yes. Resizing runs in your browser, so nothing is uploaded and no credits are spent.
Drop a file or click to browse
90%
Waiting for a file
Add a file to start.
Original
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Output
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Saved
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Private browser processing. No uploads.
Output
Waiting for a file
Quick tips
- Keep aspect ratio on for most product and social images.
- Resize before compressing when the source file is oversized.
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