Resize Image
Set a new width and height — the aspect ratio stays locked unless you say otherwise.
Done
How to resize an image
- Drop a JPG, PNG or WebP onto the box above, or tap it to choose a file. The width and height boxes fill in with the picture's current pixel size the moment it loads.
- Type the width you want. With Keep aspect ratio ticked — it is on by default — the height updates by itself, and typing a height updates the width the same way.
- Untick that box only when you genuinely want to squash or stretch the picture into a different shape.
- Press Resize Image. The file downloads with its new dimensions in the name, for example photo-1200x800.jpg.
What people use it for
Resizing is usually about meeting a number someone else has decided on — a pixel width in a spec, a limit on a form, or simply making a huge camera file manageable.
- Bringing a 6000-pixel-wide camera photo down to something sensible for a blog post or a web page.
- Producing a profile picture at the exact pixel size an application asks for.
- Making thumbnails all the same width so a gallery or a product grid lines up neatly.
- Cutting a screenshot down before it goes into documentation, so it doesn't dominate the page.
- Preparing an image for an email signature or a forum avatar with a strict maximum size.
Good to know
Making an image smaller is straightforward; making it bigger is not. Enlarging past the original dimensions cannot invent detail that was never captured, so the result will look soft or slightly plastic however carefully it is scaled. If you need a large print, go back to the original file rather than upscaling a small copy. Both fields accept whole numbers from 1 to 20000 pixels, and the tool refuses to run if either is empty or zero. On a phone or tablet, a target above about 16.7 megapixels in total, such as 5000 × 5000, is reduced in proportion until it fits, since that is the most an iPhone or iPad browser can draw; on a computer the ceiling is about 67 megapixels. The status line tells you when this happens.
The output keeps the format you started with: a PNG comes back a PNG with its transparency intact, a WebP stays WebP, and anything else is written as a high-quality JPG. Since JPG has no alpha channel, transparent areas would become white in that case. The resized copy is drawn afresh, so it carries none of the original's hidden metadata — no GPS location, no camera details. Scaling down usually shrinks the file size as a useful side effect; if the result is still too heavy, pass it through Compress Image afterwards. To change the framing rather than the scale, Crop Image is the right tool. No copy of your file is posted to a server at any stage — the whole resize happens in the page already open in front of you.
Questions people ask
Will resizing make my photo blurry?
Scaling down normally looks clean, because detail is being discarded rather than invented. Softness appears when scaling up, and the further past the original size you go, the more obvious it becomes.
Can I set a width and height that don't match the original proportions?
Yes — untick Keep aspect ratio and type both numbers. Be aware that the picture will be stretched to fit rather than cropped.
Does the file format change?
No. The result is saved in the same format as the file you dropped in, with one exception: Safari cannot write WebP, so a WebP resized there comes back as a PNG. Use Convert Image if you want to switch between JPG, PNG and WebP.
Can I resize several images at once?
This tool takes one image at a time, because it reads that specific file's dimensions and lets you set exact numbers against them. For work across a whole folder, the compress and convert tools accept batches.