Resize images to exact pixel dimensions or by percentage. Maintain aspect ratio, set max width/height, and download the resized image instantly.
Image Resizer
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Resize Images to Exact Dimensions — In Your Browser
Resize any image to specific pixel dimensions for social media, web use, printing, or email. Lock the aspect ratio to avoid distortion, or set exact width and height for a specific use case.
Common Image Size Requirements
Open Graph / Social share: 1200×630 px (Facebook, LinkedIn, Twitter card)
When you resize with aspect ratio locked, changing width automatically updates height proportionally. This prevents stretching or squishing. If you need a specific ratio that doesn't match the original (e.g. portrait to square), unlock ratio and crop manually in an image editor after resizing.
Frequently Asked Questions
For full-width hero images: 1920px wide maximum, compressed to under 200KB. For blog content images: 800–1200px wide. For thumbnails: 400–600px. Always serve appropriately sized images — don't serve a 4000px image for a 400px thumbnail slot. Use CSS max-width and the HTML srcset attribute for responsive images.
Yes — reducing dimensions significantly reduces file size since fewer pixels need to be stored. A 4000×3000 image has 12 million pixels; a 1200×900 version has 1.08 million — nearly 91% fewer pixels. Combined with compression, this can take a 5MB original down to under 100KB for web use.
Use the preset buttons: 1080×1080 for Instagram square posts, 1200×630 for Open Graph / link previews on Facebook and LinkedIn, 1280×720 for YouTube thumbnails. For Instagram Stories use 1080×1920 (portrait). Always check the platform's current requirements as they occasionally update.
Enlarging an image (upscaling) beyond its original dimensions always introduces blur because the computer must invent pixels that weren't there. For sharp results, resize down, not up. If you need a larger version of a small image, AI upscaling tools (like Topaz Gigapixel) can intelligently fill in detail, but a basic canvas resize cannot.