Image Resizer
Drop one or many images and resize by maximum side, exact dimensions or percent scale. Aspect ratio locks automatically, with quick presets for common sizes (1080, 1920, 4K).
Tap to choose images or drop here
PNG · JPG · WebP · BMP · GIF · multiple files supported
Longer side becomes this; shorter side scales to keep aspect ratio.
Used for JPG transparency or letterbox bars.
Resizing runs in your browser. Images are never uploaded.
How to use this image resizer
- Drop images or click to choose files (multiple supported).
- Pick a mode: max side in px, exact dimensions, or percent scale.
- Use quick presets like 1080 / 1920 / 4K, or set a custom size.
- Click Resize and download individually or all at once.
Frequently asked questions
Does it preserve aspect ratio?
Yes — by default. In 'exact dimension' mode you can unlock aspect ratio if you need a specific width and height (the image will stretch).
Can it upscale (make images larger)?
Yes, but quality won't improve — it only stretches the existing pixels with high-quality bicubic resampling. For best results, downscale only.
What's the best output format?
Keep the original format unless you need smaller files — then choose WebP for the best size/quality trade-off, or JPG for universal support.
Are my images uploaded?
No. Resizing happens entirely in your browser using Canvas. Files stay on your device.