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Image Resizer
Resize by pixels or percentage.
Free. Runs in your browser: nothing you enter or open is uploaded.
How to use it
- Choose or drop an image.
- Type the new width or height (the other follows when Keep proportions is ticked), or switch to By percentage and pick a scale.
- Choose the file type and press Resize and download.
Questions
Are my images uploaded?
No. The image is resized by your browser on your device and the new file is created there too.
Why does a shrunk image stay sharp?
Big reductions are done in steps, halving the size each time before the final size. Jumping straight from a large photo to a small one skips pixels and looks jagged.
Can I make an image bigger?
Yes, but enlarging cannot add detail that was never there, so a much larger copy will look soft. For a sharp result, start from the largest original you have.
Which format should I pick?
JPG for photos, PNG for screenshots, logos and anything with transparency, and WebP when you want a smaller file for a website. JPG has no transparency, so clear areas turn white.