Image Resize
Enter target dimensions, resize images instantly. Lock aspect ratio supported.
Drag images here, or click to browse
Supports JPG / PNG / WebP and other common formats
About Image Resize
Image Resize adjusts images to specific dimensions. Different platforms have their own size requirements — social media networks have optimal display sizes, e-commerce platforms need uniform product image dimensions, and print materials require exact pixel measurements. Manually resizing images one by one is time-consuming and error-prone. This tool lets you resize in the browser instantly, without installing any software.
All processing happens entirely in your browser using the HTML5 Canvas API. Images are never uploaded to any server, ensuring your files remain private.
Key Features
- Custom dimensions: Enter a target width or height in pixels, and the tool calculates the other dimension automatically
- Aspect ratio lock: Enabled by default to prevent distortion. Disable it when you need exact dimensions regardless of proportion
- Multiple formats: JPG, PNG, and WebP input supported; output format matches the input
- Browser-only processing: Canvas API, no server upload, complete privacy
Common Platform Size References
Different platforms require specific image dimensions. Instagram posts: 1080×1080px (square) or 1080×1350px (portrait). Facebook cover photos: 820×312px. LinkedIn profile photos: 400×400px recommended minimum. Twitter/X profile photo: 400×400px. YouTube thumbnails: 1280×720px. Shopify product images: 2048×2048px recommended. These are typical scenarios where Image Resize saves you time.
Common Use Cases
Social media managers resize high-resolution camera photos to optimal platform dimensions before posting. E-commerce sellers standardize product image sizes for consistent storefront appearance. Designers export assets at specified dimensions for client delivery. Bloggers and content creators prepare header images at the exact width their theme requires.
How to Use
- Upload the image you want to resize
- Enter the target width or height in pixels (the other field updates automatically)
- Toggle aspect ratio lock on or off as needed
- Click "Resize" and download the result