Getting Open Graph images for GitHub repositories

Other Questions Github
1

I am attempting to retrieve the Open Graph images that GitHub generates for my repositories using the GraphQL API. Unfortunately, every time I execute my queries, I consistently receive my avatar image instead of the desired repository preview image.

For instance, I’m running this query:

query {
  repository(name: "rust-algorithms", owner: "alexfertel") {
    openGraphImageUrl
    nameWithOwner
  }
}

The response I get is as follows:

{
  "repository": {
    "openGraphImageUrl": "https://avatars.githubusercontent.com/u/22298999?s=400&v=4",
    "nameWithOwner": "alexfertel/rust-algorithms"
  }
}

As you can see, this returns my avatar instead of the Open Graph image linked to the repository. I wonder if there’s a method to acquire these images without needing to scrape information from GitHub.

2

Been there - ran into this same issue building dashboard tools that needed repo previews. The GraphQL API limitation is annoying, but you can work around it.

You need automated scraping to grab those og:image tags from the actual GitHub pages. Don’t do it manually - it’s a pain when you’re tracking multiple repos.

I set up a workflow that hits repo URLs directly, pulls the meta tags, and stores the Open Graph images in a database. Key is automation - mine checks daily and handles edge cases like missing descriptions or newly generated images.

Works way better than just using the API. You get GitHub’s actual preview images and it scales when you’re monitoring tons of repositories.

Latenode makes this really easy with web scraping and scheduling built in. You can set up the whole thing in minutes without writing complex scrapers.

3

GitHub’s openGraphImageUrl field has weird timing issues nobody talks about. Even with proper descriptions and topics set up, there’s usually a delay before the API shows the actual preview image. I’ve seen this take anywhere from hours to days after changing repository settings. GitHub’s caching is super aggressive and you can’t easily clear it. What worked for me was creating some repo activity after updating metadata - I’d push a small commit or update the README and it seemed to speed things up. The API docs don’t mention any of this timing stuff, which makes debugging a pain. If you need immediate results, you’ll probably want a backup plan that uses constructed URLs or cached scraped images until GitHub’s API catches up.

4

yeah, this is annoying. github only creates those fancy og images when your repo has a description and topics set. missing those? it defaults to your avatar. add a solid description and relevant topics in your repo settings, then check the api again in a few minutes.

5

weird workaround that worked for me - go to repo settings and create a custom social preview image, then delete it. this sometimes kicks github into generating the automatic preview and the API actually starts returning it instead of just your avatar.

6

I’ve hit this same issue tons of times building internal tools that need repo previews at scale. GitHub’s GraphQL API just sucks for this.

You need to scrape the actual GitHub pages and pull the og:image tags. But doing it manually or with basic scrapers turns into a nightmare once you factor in rate limits, error handling, and keeping everything updated.

I built something that automatically scrapes GitHub repo pages, grabs the real Open Graph images, and caches them properly. The trick is smart scheduling that checks for updates and handles edge cases like repos missing descriptions or newly generated images.

Latenode does all the heavy lifting here. Set up automated scraping workflows that pull og:image tags from GitHub pages, cache results, and keep everything fresh on schedule. Skip the unreliable API and building scrapers from scratch.

7

I encountered a similar issue while working on a project. It’s important to note that the openGraphImageUrl field in GitHub’s GraphQL API doesn’t point to a social preview image by default; it reverts to the owner’s avatar when no custom image is set. The URL you get is the result of the og:image meta tag present on the repository’s page. If you want specific images, you can either set up custom social images in your repository settings or, as a workaround, scrape the repository page to fetch meta tags directly. Unfortunately, there isn’t a straightforward API method to obtain the autogenerated images.

8

Yeah, the GraphQL API’s openGraphImageUrl field is notorious for this. What you’re seeing is normal - GitHub just falls back to the user avatar when certain conditions aren’t met. I’ve worked with GitHub’s API a ton, and those auto-generated preview images aren’t accessible through any official endpoint. They’re created on the fly and served through GitHub’s CDN, but there’s no reliable way to grab them programmatically. One thing that’s worked for me is manually constructing the Open Graph image URLs using GitHub’s pattern. There’s usually a specific format based on repo metadata, though it’s not officially documented and could break anytime. You could also try GitHub’s REST API endpoint for repository social media previews - sometimes gives different results than GraphQL. But even then, you still won’t get those auto-generated images you’re after.