Image Resizer

Three Ways to Resize

Different use cases call for different resizing approaches. Exact dimensions mode lets you set precise pixel widths and heights with an aspect ratio lock that automatically calculates the proportional dimension — essential for UI design, web assets, and any context with strict size requirements. Preset mode provides ready-made dimensions for common social media formats (Instagram, Facebook, Twitter), passport photos, and standard web sizes so you don't need to memorize specifications. Target file size mode iteratively adjusts compression until your image meets an exact kilobyte limit — useful for applications with strict upload size requirements.

Quality Without Distortion

All resizing uses the HTML5 Canvas API with bicubic-equivalent scaling to produce smooth, artifact-free results. Aspect ratio locking prevents the stretching and distortion that occurs when width and height are changed independently. For batch resizing, the same settings apply to all files — useful when standardizing a collection of product photos, profile pictures, or presentation assets to consistent dimensions.

Private Browser-Based Processing

Image resizing happens entirely in your browser. Files are drawn to an HTML5 Canvas element and re-exported — no pixel data is ever transmitted to a server. Batch processing runs sequentially in memory, and all blob URLs are released after download. Your photos — including faces, locations, documents, and private content — never leave your device during any step of the process.