Image Resizer
Resize any image to exact pixel dimensions — aspect-ratio lock, percentage presets, no upload.
Whether a form demands "exactly 600 × 600 pixels", a listing photo has a size requirement, or a 4000-pixel camera photo just needs to be reasonable for the web, resizing is the fix. Drop an image in, type the width or height you need (the other dimension follows automatically with the aspect-ratio lock), or hit a percentage preset — then download the result as PNG, JPEG or WebP.
Quality matters when shrinking a large photo: naive resizing produces jagged edges and moiré artifacts. This tool downscales in multiple steps, halving the image until it approaches the target size, which is the standard technique for smooth, sharp reductions. And like every tool here, the work happens in your browser — the image is never uploaded, so it's fast even on slow connections and safe for private photos. If your goal is a smaller file rather than specific dimensions, the image compressor is the better tool; for cutting a region out of the image, use the crop tool.
How to use the Image Resizer
- Drop your image onto the tool or click to browse.
- Enter the target width or height in pixels — with the aspect lock on, the other side updates automatically. Or click 25%, 50% or 75% for a quick scale.
- Choose the output format: PNG for graphics and transparency, JPEG or WebP for photos.
- Click Resize & download.
Frequently asked questions
Will resizing reduce my image quality?
Shrinking an image is essentially lossless to the eye when done well — this tool uses stepped downscaling to keep edges smooth. Enlarging, however, can't invent detail: a small image scaled up will look soft. Whenever possible, start from the largest original you have.
What does the aspect-ratio lock do?
It keeps width and height in the same proportion as the original, so the image never looks stretched or squashed. Type either dimension and the other adjusts automatically. Untick it only if you deliberately need a different shape.
Which output format should I pick?
PNG preserves transparency and exact pixels — best for logos, screenshots and graphics. JPEG and WebP are much smaller for photos; WebP is smaller still and supported by all modern browsers.
Can I resize by percentage instead of pixels?
Yes — the 25%, 50% and 75% buttons fill in the pixel values for you, which you can then fine-tune before downloading.
Is there a maximum file size?
No hard limit — processing is local, so even 50-megapixel photos work. Extremely large images are limited only by your device's memory.