An image resizer changes the dimensions of a photo or graphic without requiring any backend. This tool takes your uploaded image, draws it to an HTML canvas at the target width and height, and then exports the resized file for download. When “Maintain aspect ratio” is enabled, the resizer keeps the original proportions so your content doesn’t look stretched.
Resizing is one of the most common steps in modern workflows: preparing images for product pages, thumbnails, social media, slide decks, document uploads, and faster website performance. If you need consistent sizing across a gallery, an online image resizer makes the process quick and repeatable.
1) Drag and drop one or more images into the upload area.
2) Set the target width and height (px). If you keep aspect ratio on, changing one dimension updates the other automatically.
3) Watch the live “Before vs Preview” comparison slider for immediate feedback.
4) Click Resize to generate downloadable outputs. Use Download all to retrieve every resized file.
The export tries to preserve your original format when possible (PNG stays PNG, JPEG stays JPEG, WebP stays WebP). For JPG/WebP exports, the quality slider helps balance detail and file size.
Any resizing can affect perceived sharpness, especially when scaling up. However, this tool uses a high-quality canvas draw for best results in the browser. For maximum fidelity, resize down rather than up.
The output format depends on the original mime type. If the browser reports an unexpected type, the tool falls back to a safe export option.
Yes. Upload several images, set your target size, then resize to generate outputs for each file.
Most browsers decode images correctly, but EXIF orientation handling can vary. If you see rotation issues, try re-exporting your original image from the camera app or photo editor first.