✦ Free · No Upload · Browser-Based
Resize Image Online — Free, Set Exact Width & Height
Set exact pixel dimensions. Lock aspect ratio to prevent distortion. Batch resize multiple images.
✓ 100% Free
✓ No file uploads
🔒 Private
⚡ Instant
Drop multiple images — batch supported
All image formats
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How to Resize an Image Online
Whether you need a specific size for social media, email, or a website, ImageZen4u resizes any image to exact pixel dimensions in seconds — all in your browser.
1
Upload your image
Drop your image into the zone. The current dimensions appear automatically.
2
Set dimensions
Enter your target width and height. The aspect ratio lock keeps proportions correct.
3
Download
Your resized image downloads instantly at the exact dimensions you specified.
Common image sizes for social media
Instagram post: 1080×1080px. Twitter/X header: 1500×500px. LinkedIn banner: 1584×396px. Facebook cover: 820×312px. YouTube thumbnail: 1280×720px.
FAQ
Downscaling preserves quality well. Upscaling (making larger) will reduce sharpness — for AI upscaling, use the Upscale tool.
Yes — drop multiple files. All resize to the same dimensions and download as a ZIP.