Resize an Image
Your image stays in your browser and is never uploaded. Location and camera data are stripped when editing. Maximum 10 MB and 25 megapixels.
To scale: same size as on the left · Fit: enlarged to the column · 1:1: one screen dot per image pixel
PNG is lossless — a quality setting has no effect on it.
What this tool does
Bring an image down to the size you need: drag the scale to 10% or type exactly 1200 pixels wide. The result appears next to the original and to scale — reduce it to a tenth and the preview is a tenth too, so you can see what you get instead of having to read it off a line of text. Downscaling happens in halving steps; that costs a fraction more computation and saves you the jagged edges you get when an image is scaled down in one jump. You can set the size three ways: in percentages, in pixels, or in centimetres at a print resolution. This page opens on the resize block, but it is the same tool that also crops, rotates and converts the file format — every part is off until you switch it on, so nothing happens that you did not ask for. Everything stays local in your browser: nothing is uploaded, logged or kept. Free and unlimited to use, including commercially.
What people use this for
- 1200 × 800 px for a header image
- 400 × 400 px for a profile picture
- Bringing a 4000 px wide photo down to 1600 px
What others think of this tool
No reviews for this tool yet. Yours would be the first.
Do you work with Westcube?
Leave a review on Google tooFrequently asked questions
Is the aspect ratio preserved automatically?
You set width and height yourself, so you can deliberately depart from the original ratio. To avoid distortion, derive the second value from the first: divide the target width by the original width and multiply the original height by that factor. A 4000 by 3000 photo brought to 1600 wide therefore becomes 1200 high. If you want to reach a fixed ratio without distorting, cropping is the better choice — that is what the crop tool is for.
Do I lose quality when resizing down?
Downscaling means pixels disappear by definition — the question is how tidily. Reducing a lot in one step makes the browser take whichever pixels happen to land on the new grid and discard the rest, which produces jagged edges and noise. This tool therefore halves in steps until the target size is in reach, so each step averages four pixels into one and something of the discarded detail survives. On top of that the file is only re-encoded when it needs to be: leave the output format on "same as original" and don’t touch the quality slider, and no extra compression pass is applied.
Which files can I use?
Any image format your browser can read: JPEG, PNG, WebP, GIF and usually AVIF too. The result comes back in the same type as the original. To switch type — for example from PNG to WebP to speed up a page — use the convert tool. To reduce file size without changing dimensions, the compression tool is the one you want.
Why is there a 10 MB and 25 megapixel limit?
That limit exists for your browser, not for our server — the file never goes there. A canvas for an image of tens of megapixels costs hundreds of megabytes of working memory, and on a phone that means a tab closing without warning. Checking up front prevents it. For virtually any photo from a camera or phone the limit is ample; if you do hit it, resize in two steps.
Can I combine resizing with cropping?
Yes, and the order is fixed: cropping happens first, scaling second. That is the order you want, because the size you type then refers to the image you keep rather than to the photo you just cut in half. With both blocks on, the pixel fields follow along as you drag the crop frame, as long as "keep aspect ratio" is ticked.