Image Dimension Checker
Check image width, height, and file size locally before uploading to social platforms.
Images never leave your browser.
What this tool does
Uploading wrong dimensions causes blurry scaling or unexpected crops on social platforms.
Check width, height, and file size locally before scheduling posts.
How to use it
- 1
Upload or drag an image file into the checker.
- 2
View width, height, aspect ratio, and file size instantly.
- 3
Verify dimensions match platform requirements before posting.
Common platform sizes
Instagram feed: 1080×1080 or 1080×1350. Stories: 1080×1920. X images: 1200×675 recommended.
Retina displays need 2× pixel density — 540px wide images look soft on modern phones.
Tips
- Verify dimensions after export from design tools — "Save for Web" settings vary.
- Pair with aspect ratio calculator when planning new graphics.
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Frequently asked questions
Is the image uploaded?▼
No. Dimensions are read from the file locally in your browser.
Does it work with GIF and WebP?▼
Yes. Most common image formats are supported for dimension inspection.