Resize Image
Resize images by pixels or percentage. Batch supported. Files never leave your browser.
Drop images to resize
batch supported — original aspect ratio kept by default
Resizing changes the dimensions of an image. Converterzilla's resizer accepts JPG, PNG, WebP, GIF and BMP, lets you target a specific pixel width or scale by percentage, and processes everything locally in your browser using the Canvas API.
How to use Resize Image in your browser
- Drop your images. Drag images onto the upload area or pick them via the file dialog. Multiple images at once are fine.
- Pick pixels or percent. Set a target pixel width OR a scale percentage. Toggle 'Keep aspect ratio' to lock the height to the width.
- Click Resize. Each image is drawn onto a canvas at the new size, re-encoded, and downloaded with a -WIDTHxHEIGHT suffix in the filename.
Why use Converterzilla for Resize Image
Two resize modes
Pixels for exact control (e.g., 1280px wide for web), percent for proportional scaling (e.g., 50% smaller).
Aspect-ratio safe
Keep aspect ratio enabled by default — only one dimension is needed and the other is computed from the source.
Batch processing
Drop a folder of phone photos, set 2000px wide, click Resize, get a folder of email-friendly versions.
Format-preserving
JPG stays JPG, PNG stays PNG. Use our JPG ↔ PNG converter to change format separately.
Frequently asked questions about Resize Image
Further reading and references
- MDN — drawImage on CanvasRenderingContext2D — the browser API behind our resize logic