Whether you need to fit an image into a specific layout, meet upload requirements for a platform, or simply reduce resolution for faster loading, our free online tool lets you resize image files in seconds with full control over the output dimensions.
You can resize by exact pixel dimensions or by a percentage of the original size. The aspect ratio lock ensures your image stays proportional — change one dimension and the other updates automatically. If you need a non-proportional stretch, simply unlock the aspect ratio and type in both values.
The tool supports JPEG, PNG, and WebP output, so you can resize and convert in one step. Because everything runs inside your browser using the Canvas API, your files are never uploaded to a server. This means you can resize image files containing personal photos, client work, or sensitive screenshots with complete privacy.
Combine this tool with our compressor to first resize and then optimize file size, or use it alongside our crop and convert tools for a complete image editing workflow — all free, all in your browser.