Image resize — by px or %, keep or lock aspect ratio
Resize JPEG / PNG / WebP images by specifying the longer side in pixels — aspect ratio is preserved. Batch process multiple files and download individually or as a ZIP. Runs entirely in your browser.
How to use
Drop or pick JPEG / PNG / WebP images (multiple supported). Pick a target longer-side size (preset or custom) and a quality (for JPEG / WebP), then click Resize — each image is scaled down while preserving aspect ratio. If the target is larger than the original, that file is skipped. Download individually or as a ZIP.
FAQ
- Are images uploaded?
- No. Resizing and re-encoding run on the browser canvas; images never leave your device.
- Can I upscale?
- No — targets larger than the original are skipped (upscaling can't add real detail).
- Why is the quality slider disabled for PNG?
- PNG is lossless and has no quality knob. The slider only applies to JPEG / WebP.
- Is aspect ratio preserved?
- Yes. You specify the longer side; the other side is computed from the aspect ratio, so the image isn't distorted.
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