Toollit

Image Resize

Resize images to your desired dimensions. Supports aspect ratio preservation and format conversion.

Image Resize Guide

Image resizing is needed in various situations like web optimization, SNS uploads, and thumbnail creation. Maintaining the original aspect ratio while reducing size ensures the image shrinks naturally without distortion.

Unlocking aspect ratio lock allows independent width/height settings, but resizing to a different ratio may stretch or squish the image.

Common Sizes

SNS Profile

Instagram/Twitter profile: 400×400px, Facebook: 170×170px

OG Image

Open Graph / KakaoTalk preview: 1200×630px

Web Thumbnail

Blog thumbnail: 800×400px, Card image: 600×400px

Privacy

This tool processes everything in your browser. Files are not uploaded to any server or stored externally, ensuring your data stays safe.