Resize images
Resize in bulk by width or percentage. The aspect ratio is always preserved, so photos never get stretched.
Drag in images, or Choose file
Batch · Keeps aspect ratio · No uploadThis is proportional "stretching", not AI upscaling. A modest enlargement is fine, but blowing a 200px image up to 2000px only makes it blurry — that kind of job needs a dedicated upscaling model.
When to use it
- An application form, visa portal, or social platform requires a width under 1200 px or a file under 2 MB, and your original is rejected for being too large.
- A blog, store, or slide deck needs a consistent image width, and you have dozens of photos to process without stretching any of them.
When not to
- You want to turn a small blurry image into a sharp large one — this only interpolates pixels and adds no detail; use a super-resolution tool.
- You need a non-proportional size such as forcing 4:3 into 16:9 — the aspect ratio is always locked here, so crop instead.
Resizing happens entirely in your browser; images are never uploaded, and closing the tab clears them. Limits: the aspect ratio is always preserved, so you can't set width and height independently; longest-side mode only shrinks; EXIF is not written to the output; JPG fills transparent areas with white; very large images or batches of several hundred use a lot of memory, so split them up.
Frequently asked
What's the difference between width, percentage, and longest side?
Width sets a fixed width and derives the height; percentage multiplies both dimensions by the same factor; longest side caps the longer edge at the value you enter and only shrinks — an image smaller than the target stays as it is. Output can be JPG, PNG, WebP, or the original format.
Why does an enlarged image look blurry?
The canvas only interpolates existing pixels; it doesn't invent detail that wasn't there. A 200 px image scaled to 2000 px just looks softer. Small enlargements (up to about 1.2×) are usually acceptable. If you need real detail, use a dedicated AI upscaler rather than ordinary resizing.
If I resize dozens of images at once, will they all come out the same size?
It depends on the mode. With width mode every output has the same width, but heights vary with each image's ratio; percentage mode scales each image from its own original size, so results differ; longest-side mode only constrains the longer edge. To get identical dimensions, crop to the same aspect ratio first.