Free image resizer
X (Twitter) image resizer
Crop an image for an X post (landscape, square or portrait), your header (1500 × 500) or your profile picture (400 × 400). In your browser.
- Free
- No sign-up
- Runs in your browser
X shows single images from 2:1 to 3:4 in full; other shapes are cropped in the timeline.
Source: an industry guide
Drop an image here
Resized in your browser and never uploaded.
How it works
- 1
Pick the platform and what the image is for: a post, a Story, a banner or a thumbnail.
- 2
Drop your image and drag it to choose what stays in the frame, or fit it whole on a background.
- 3
Download it at the exact size, as JPG or PNG.
Image sizes per platform
The sizes the resizer makes, each with where it comes from: the platform's own page wherever it publishes one.
| Platform | For | Size | Shape | Source |
|---|---|---|---|---|
| X | Landscape post | 1600 × 900 | 16:9 | an industry guide |
| X | Square post | 1080 × 1080 | 1:1 | the platform's ads guide |
| X | Portrait post | 1440 × 1800 | 4:5 | the platform's ads guide |
| X | Header | 1500 × 500 | 3:1 | the platform's help page |
| X | Profile picture | 400 × 400 | 1:1 | the platform's help page |
Checked 6 November 2026.
Tips
- Tip 1For Instagram's feed, 4:5 portrait (1080 × 1350) takes the most room on a phone.
- Tip 2Keep text and faces away from the edges of covers and banners: phones and computers crop them differently.
- Tip 3Use PNG for text and logos, JPG for photos.
Use it from an AI app
ChatGPT, Claude and other AI apps can run this too, through the free API or the free MCP server. No account or key needed.
API
curl "https://superbridger.com/api/tools/image-sizes?platform=instagram"
JSON in, JSON out, open to any site (CORS). The OpenAPI description lists every endpoint. OpenAPI
MCP server
https://superbridger.com/api/tools/mcp → get_image_sizes
Add https://superbridger.com/api/tools/mcp as a custom connector in Claude, or as an app in ChatGPT. No sign-in.
FAQ
Questions
What size should an image on X be?
1600 × 900 (16:9) is the common choice. X shows single images from 2:1 to 3:4 in full; other shapes are cropped in the timeline.
What size is an X header?
1500 × 500. Up to 60 pixels at the top and bottom may be cropped, so keep text in the middle.
What size is an X profile picture?
400 × 400, up to 2 MB.
Is my image uploaded?
No. It's resized in your browser and saved straight to your device.
What happens to the parts that don't fit?
They're cropped. Drag the image to choose which part stays, and zoom in if you like. Or choose Fit to keep the whole image on a background colour.
More free tools
- Video checkerWill your video post on Reels, TikTok, Shorts, LinkedIn and X? Length, size, shape, codec and sound, per platform.
- Caption checkerOne caption against every platform's limit, counted the way each one counts: X's 280, Instagram's 5 hashtags, YouTube's title.
- Social media specsEvery limit in one dated table: video length and size, caption length, hashtags, photos and Stories. Also as JSON.
- Image resizerCrop an image to the right size for each platform: posts, Stories, banners and thumbnails. In your browser.
- Safe zone checkerSee where the buttons and captions of Reels, TikTok and Shorts cover your video, before you post.
- UTM builderTag a link for every platform at once, so your analytics show which post brought the visitors.
Post everywhere, starting today.
7-day free trial · No card needed. Sign up with your email or Google and post your first video today.
Superbridger runs these checks before every post, then publishes to every platform at once.