Image Resizer
Resize by pixels or percentage.
Runs entirely in your browser. Nothing you enter or upload leaves your device.
What the image resizer does
The image resizer changes how many pixels wide and tall a picture is. You might need it when a website, marketplace or job portal asks for an image of a set size, when a profile photo is too big to upload, or when you want a large camera photo small enough to email.
You can type exact dimensions or scale the whole image by a percentage, from 1% up to 400%, and save the result as JPG, PNG or WebP.
How to use the image resizer
Change the width and height of an image, in pixels or by percentage.
- Drop an image or click to choose one. The size boxes start at half the original dimensions.
- Enter a new width or height. With Keep aspect ratio ticked, the other side follows. Or switch to By percentage.
- Choose an output format and download the result.
Understanding the results
The preview updates as you type, and the file name records the new size, so photo.jpg resized to 800 by 600 downloads as photo-800x600.jpg. When you shrink an image a long way, the tool halves it in steps before the final resize, which gives smoother edges than one big jump.
The Quality slider (40–100%, starting at 90%) only affects JPG and WebP. PNG is always saved without loss, so its file size depends on the image rather than the slider. Saving to JPG fills any transparent areas with white. If your browser can’t write the format you picked, the result card says which format it used instead.
Questions
Will enlarging make my image sharper?
No. Enlarging spreads the same detail over more pixels, so it looks softer. Shrinking keeps images sharp.
Which format should I choose?
JPG for photos, PNG for screenshots, logos and anything with transparency, and WebP for the smallest files on a website.
What is the largest size I can make?
Each side can be up to 16,384 pixels, and the whole image can hold up to about 67 million pixels (the area of 8,192 × 8,192). Beyond that the tool asks you to pick a smaller size, because browsers can’t reliably draw it.
What happens if I untick “Keep aspect ratio”?
The image is stretched or squashed to fill whatever width and height you type. To change the shape without distortion, cut it down with Crop Image instead.
Why did my GIF come out as a PNG?
With “Same as original”, JPG, PNG and WebP files keep their format and anything else, such as GIF or BMP, is saved as PNG. An animated GIF becomes a single still frame.
Does the resizer upload my image?
No. Resizing happens in your browser with the canvas API.