Image Resizer

How to use

1. Drop an image onto the box or click to browse.
2. Resize by width, height or percentage, and pick the output format and quality.
3. Preview the result with the new dimensions shown, then download.

Use cases

1. Use case: Prepare social media covers Resize a photo to the exact 1200x630 ratio for a Facebook/OG share image in seconds.

2. Use case: Batch-prepare product photos Downscale large camera photos to web-friendly dimensions before uploading to your shop or CMS.

Practical tips

Lock the aspect ratio unless you are deliberately cropping — freeform stretching distorts faces and logos in ways that are hard to see on a small preview. Downscaling almost always looks good; upscaling adds softness, so prefer re-shooting or re-exporting a larger source. Platform requirements are exact (profile pictures, thumbnails, OG images all have precise dimensions) — enter the exact pixels rather than eyeballing proportions. Resize before compressing for the smallest result. Like every tool on this site, the Image Resizer runs entirely in your browser: the data you enter never leaves your device, nothing is uploaded to a server, and the tool keeps working if your connection drops.

Common mistakes

Resizing errors hide in small previews:

• Resizing with the aspect ratio unlocked, which subtly stretches faces and logos in ways that are hard to spot until publication.
• Upscaling small images and expecting sharpness — upscaling adds softness; re-export from a larger source instead.
• Eyeballing proportions instead of entering the exact pixels a platform requires (profile pictures, OG images and thumbnails all have precise specs).
• Compressing before resizing and then compressing again — resize first, compress once.

Frequently asked questions