# GitHub Social Preview Generator (1280×640)

> Type a repository. We read its name, description, stars, forks and language from GitHub and put them on a 1280×640 card — the size GitHub asks for. Download it and upload it in the repository settings.

Page: https://shareglint.com/en/tools/github-social-preview

## How it works

1. We parse the owner and name and ask GitHub's public API for the repository — never another address.
2. Name, owner, description, stars, forks and the main language go into the built-in GitHub repository template, with the owner's avatar.
3. Chrome renders it at 1280×640 as a PNG.

## Keep it current from code

The github-repo template is one of 153 built-in templates in the Shareglint API. Render it in CI on every release with fresh numbers — 100 images a month free. https://shareglint.com/en/og-image-generator

## Questions

### What is a GitHub social preview?

The image GitHub uses as the repository's og:image — the card people see when the repo link is shared on X, LinkedIn, Slack or Discord. Without one, GitHub generates a plain card.

### What size is a GitHub social preview image?

GitHub recommends 1280×640 pixels and requires at least 640×320, as PNG, JPG or GIF under 1 MB. This tool renders exactly 1280×640.

### Does it work for private repositories?

No. We only read what GitHub shows to anyone without signing in.

### Will the star count update by itself?

No — an uploaded image is fixed. To keep numbers current, render the card from code: the github-repo template through the API, on a schedule or on each release.