Image resizer that lets you resize image dimensions in your browser. Lock aspect ratio, pick the format, set quality, and download instantly.

Upload an image to resize
JPG, PNG, WebP, GIF — processed locally
Set the exact pixel width; the tool scales height proportionally.
Hit common sizes — 1080×1080 (Instagram), 1200×630 (OG), 1500×500 (X header).
Match your theme's recommended dimensions before upload.
Drop several files at once and resize them with the same dimensions.
Uses high-quality bicubic-style scaling for sharp results.
No. Resizing happens entirely in your browser; nothing is sent to a server.
Downscaling stays sharp. Upscaling adds pixels that weren't there, so quality drops — keep enlargements modest.
JPG, PNG, WebP, and most images your browser can decode.
Yes by default — change one dimension and the other follows. You can unlock it to force a stretched size.
Use the Image Compressor for that — it resizes and re-encodes in a single pass.
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