Image Dimension Checker
Check image width, height, and file size locally before uploading to social platforms.
Images never leave your browser.
About this tool
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 the Image Dimension Checker
- 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.
Pro tips
- Verify dimensions after export from design tools — "Save for Web" settings vary.
- Pair with aspect ratio calculator when planning new graphics.
Social Media Specs & Character Limits
Optimal text formatting, length guidelines, and parameters for all major platforms:
| Platform | Max Length | Ideal Length | Hashtag Policy |
|---|---|---|---|
| Instagram Feed & Reels | 2,200 chars | 125 - 150 chars | 3 - 5 tags (Recomm.) |
| TikTok Posts | 4,000 chars | 100 - 200 chars | 3 - 5 tags (Ideal) |
| YouTube Description | 5,000 chars | 1,500 chars (SEO) | 3 - 10 tags |
| X / Twitter Post | 280 chars | 100 - 140 chars | 1 - 2 tags |
| LinkedIn Articles & Posts | 3,000 chars | 500 - 1,000 chars | 3 - 5 tags |
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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.