Resize Image
Files
Select one or more images. Set scale, width, and output format — preview appears for a single file.
Drop files here or
Accepted: JPG, JPEG, JFIF, PNG, WEBP, GIF, BMP, TIFF, TIF, SVG, HEIC, HEIF, AVIF
All processing happens in your browser — your files are never uploaded to a server.
About this Tool
Adjust image dimensions with high-fidelity pixel resampling. Scale your graphics by relative percentage (10% to 100%) or input custom width/height dimensions. All resizing is computed locally on your device's GPU/CPU Canvas, keeping your private assets secure.
100% Secure Local Processing Active
This tool runs entirely on your device via WebAssembly and browser Canvas. No files are ever sent to any remote server, ensuring complete data security.
How to Use
Upload your image (PNG, JPG, WebP, etc.).
Use the responsive percentage slider to quickly scale down, or enter custom target width and height in pixels.
Check the aspect ratio lock to prevent stretching, and download your resized image in your chosen format.
Perfect For
Optimizing Web Page Performance
Reduce 5MB high-resolution camera photos down to lightweight web-friendly dimensions to speed up website load times.
Meeting Email and Portal Upload Limits
Quickly resize document scans or passport photos to meet strict upload size constraints on government or school portals.
UI Design Asset Preparation
Scale icons, app screenshots, or graphic mocks to standard layout widths for direct inclusion in mobile and web projects.
Frequently Asked Questions
Percentage resizing maintains absolute proportions perfectly and is great for general file size reduction. Pixel resizing lets you match exact layout requirements (e.g. exactly 800px wide).
Yes, if you input a transparent PNG and export as PNG or WebP, the alpha transparency is fully preserved without black or white backdrops.