Resize an image
Set exact pixel dimensions or aim for a target file size in KB. Everything runs in your browser.
Processed in your browser
Drop your image here
or choose an image from your device
Accepts JPG, PNG or WEBP · max 25.00 MB
How to use it
- 1Drop your image. Its current pixel dimensions appear in the metadata row.
- 2Resize by pixels — type a width or height and the other side follows the aspect ratio — or switch to target size and enter the KB limit you need to hit.
- 3In target-KB mode the tool encodes, measures, adjusts quality and repeats until the output actually fits under your limit.
- 4Press Resize, verify the output dimensions in the result panel, and download.
Frequently asked questions
What width should I use for a website?
1600px on the long edge for a full-width hero, 1200px for body images, around 800px for cards and thumbnails. Serving pixels wider than the display area is the most common cause of slow pages.
Can I make a small image bigger?
You can enter larger numbers, but nothing is gained — upscaling interpolates existing pixels and produces a bigger, softer file. Start from the highest-resolution original you have.
How does the target file size mode work?
It runs a binary search on encoder quality: encode, measure the real byte count, adjust, repeat. That's why it lands under your limit instead of estimating.
It can't reach my target KB. What now?
The dimensions are too large for that limit. Reduce the width first — halving it removes roughly three quarters of the pixels — then try the target again rather than pushing quality into the twenties.
Is the aspect ratio always locked?
The linked ratio is on by default so images don't stretch. Unlink it if you deliberately need a non-proportional size, and expect distortion.
Related guides
- How to reduce image file size without wrecking the pictureMost oversized images are oversized for one boring reason: the dimensions are far larger than anywhere they're displayed. Fix that first, then compress.
- JPG vs WEBP: is it worth converting your images?WEBP typically saves 25–35% over an equivalent JPG. Here is where that saving is real, where it isn't, and what you give up.
Related tools
- Crop ImageTrim an image to the exact area you want, using pixel-accurate crop values.
- Image CompressorReduce JPG, PNG or WEBP file size with a quality slider you control. Compression happens in your browser.
- Rotate ImageRotate photos by 90, 180 or 270 degrees and download the corrected file.
- JPG to PNGTurn JPG images into PNG files right in your browser. No upload, no signup, no watermark.