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Resize images to exact dimensions with aspect ratio lock — 100% in your browser.
Use Image Resizer when a photo, screenshot, or graphic needs specific pixel dimensions for a website, profile, email, or product listing. Resizing changes width and height, and it can also affect file size and perceived sharpness. Choose dimensions that fit the destination instead of simply making every image as large as possible.
Preserve aspect ratio or calculate matching width and height before exporting.
Avoid upscaling beyond the original dimensions when sharpness matters.
Resize first, then use image compression or a modern format if the destination supports it.
Check whether the platform crops images and choose dimensions that match its required aspect ratio.
Image Resizer processes the selected image in your browser, so the pixels are not intentionally uploaded for resizing. Large photos can use significant memory, and sensitive images should only be edited on trusted devices.
Note the current width and height so you know whether you are downscaling, upscaling, or changing aspect ratio.
Set the required width or height, preserving aspect ratio unless the destination demands exact dimensions.
Look for softness, stretching, cropped subject matter, and readable text before downloading.
Save a copy such as hero-1200w.jpg and keep the original image for future edits.
Input: 3000x2000 photo. Output: 1200x800 image when aspect ratio is preserved for a web article hero.
Input: 1024x1024 logo. Output: 512x512 image suitable for many profile and app icon upload forms.
Input: 2560x1440 screenshot. Output: 1280x720 image that keeps the same 16:9 ratio and is easier to embed in a help article.
It changes image pixel dimensions such as width and height. File size may also change, but resizing is primarily about dimensions rather than compression ratio.
Usually yes. Preserving aspect ratio prevents stretched faces, logos, and product photos. Use a deliberate crop or exact dimensions only when a platform requires them.
Downscaling normally keeps images usable while reducing detail. Upscaling beyond the original dimensions can look soft because the browser has to invent pixels.
Use the dimensions required by the destination, such as a 1200px wide blog hero or a 512x512 icon. Avoid uploading images much larger than the display size.
The resize operation runs in the browser canvas, so the selected image is not intentionally sent to a server. Remove private metadata beforehand if that matters to your workflow.
Resize changes the overall width and height, usually preserving the full image. Crop removes pixels from the edges or center. If a platform asks for 16:9, square, or banner artwork, decide whether scaling alone is enough or whether content must be cropped intentionally.
Yes, but downscale carefully. Small UI labels can become unreadable if the target width is too low, so preview the result at the final display size before adding it to documentation, email, or a bug report.
Yes. Save the original photo or screenshot so you can create another size later without quality loss.