Free image resizer

Facebook image resizer

Crop an image for a Facebook post (portrait, square), a link preview (1200 × 630), a Story, your Page's cover (851 × 315) or its profile picture. In your browser.

  • Free
  • No sign-up
  • Runs in your browser
Platform
Size

Source: the platform's ads guide

Drop an image here

Resized in your browser and never uploaded.

How it works

  1. 1

    Pick the platform and what the image is for: a post, a Story, a banner or a thumbnail.

  2. 2

    Drop your image and drag it to choose what stays in the frame, or fit it whole on a background.

  3. 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.

PlatformForSizeShapeSource
FacebookPortrait post1440 × 18004:5the platform's ads guide
FacebookSquare post1080 × 10801:1an industry guide
FacebookLink preview1200 × 6301.91:1the platform's help page
FacebookStory or Reel1080 × 19209:16an industry guide
FacebookPage cover851 × 3152.7:1the platform's help page
FacebookProfile picture320 × 3201:1the 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.

Reference for AI apps (Markdown)

FAQ

Questions

What size should a Facebook post image be?

Portrait 4:5 (1440 × 1800, Meta's ads guide) or square (1080 × 1080) take the most room in the feed.

What size is a Facebook link preview?

1200 × 630 pixels (about 1.91:1), at least 600 × 315, per Facebook's sharing docs.

What size is a Facebook Page cover?

851 × 315. Shown at 16:9 on computers and about 2.4:1 on phones: keep the middle clear of the edges. Under 100 KB loads fastest.

What size is a Facebook profile picture?

At least 320 × 320; it shows as a circle.

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.

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Superbridger runs these checks before every post, then publishes to every platform at once.