Image Resizer
Resize images to the perfect dimensions for every social platform — right in your browser, with no upload and no signup.
🔒 100% private — images are resized in your browser and never uploaded.
1080 × 1080 px
How to use the Image Resizer
- 1
Choose an image from your device — it stays in your browser and is never uploaded.
- 2
Select the target size, like Instagram Post or YouTube Thumbnail.
- 3
Pick “cover” to fill the frame or “contain” to fit the whole image.
- 4
Click “Resize & Download” to save a perfectly sized PNG instantly.
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 |
Frequently Asked Questions
Are my images uploaded to a server?▼
No. All resizing happens locally in your browser using HTML canvas, so your images never leave your device. It is 100% private.
What sizes are available?▼
Presets for Instagram posts, portraits, stories and reels, TikTok, YouTube thumbnails, Twitter/X, Facebook covers, and LinkedIn banners.
What is the difference between cover and contain?▼
Cover fills the entire frame and may crop edges. Contain fits the whole image inside the frame and pads any empty space with white.
What format is the download?▼
Resized images download as high-quality PNG files named with their dimensions.