Resize Image Online
Set a width, a height, or a percentage and get a resized copy in any format. Leave one dimension blank and it's calculated for you.
Why use this tool
Exact or proportional
Enter just a width to keep the aspect ratio, both to fit inside a box, or untick 'Keep aspect ratio' to force exact dimensions.
Quality resampling
Images are downscaled with high-quality interpolation, so shrinking a photo stays sharp rather than jagged.
How to resize an image
- Set the size — type a width and/or height in pixels, or click 25% / 50% / 75%.
- Upload — drop your image(s) — the size applies to each one.
- Download — pick PNG, JPG or WebP output and grab the result.
Frequently asked questions
Can I enlarge an image?
Yes, but upscaling can't invent detail — a small image made larger will look softer. It works fine for modest increases.
Does it resize multiple images at once?
Yes. The same size settings apply to every file you drop; each is resized independently.
Is this tool free?
Yes — every tool on ConvertPicto is completely free, with no account, no watermark and no file limits. The site is supported by ads.
Are my images uploaded to a server?
No. ConvertPicto runs entirely inside your browser using the Canvas API. Your files are read locally, processed on your device and never sent anywhere — we don't even have a server that could receive them.
Does it work on my phone?
Yes. The site is fully responsive and works in any modern mobile browser (Chrome, Safari, Firefox, Edge). Processing large images is naturally slower on a phone than on a laptop.