Image Resizer Canvas API
Drop an image here or click to upload
JPG, PNG, WebP, GIF, BMP, SVG supported · Processed 100% locally
Why Resize Images?
Resizing images is one of the most common tasks in web development, social media management, and digital photography. Large images slow down web pages significantly — a 4MB photo from a smartphone can be reduced to under 100KB by resizing and compressing it to web dimensions, dramatically improving load times and Core Web Vitals scores.
Output Format Guide
- JPEG: Best for photographs and complex images with many colors. Lossy compression reduces file size significantly. Quality 75–85% gives the best size/quality balance.
- PNG: Best for images with transparency, logos, icons, and screenshots. Lossless compression — larger files but no quality loss. Supports alpha channel.
- WebP: Google's modern format. 25–35% smaller than JPEG at equivalent quality, with transparency support. Supported in all modern browsers.
Common Resize Presets
- Social media: Twitter header 1500×500, Instagram post 1080×1080, Facebook cover 820×312, LinkedIn banner 1584×396.
- Web standards: HD 1280×720, Full HD 1920×1080, 4K 3840×2160, thumbnail 150×150.
- Print: A4 at 300 DPI = 2480×3508, Letter at 300 DPI = 2550×3300.