Display Repo Size for GitHub (OpenScript Userscript)

A lightweight OpenScript userscript that displays the total repository size directly on GitHub repository pages (for both public and private repositories).

Features

• Displays total repo size (formatted in KB, MB, or GB) next to the file navigation header.
• Works seamlessly on public and private repositories.
• Integrates with OpenScript's synced secrets: uses GH_PAT (GitHub Personal Access Token) to authenticate API requests, unlock private repo access, and elevate the rate limit from 60 to 5,000 req/hr.
• Supports GitHub's Turbo and SPA client-side navigations.

Installation in OpenScript

1. Open the OpenScript extension popup.
2. Click + New in the header.
3. Copy and paste the code from DisplayRepoSizeGitHub.user.js into the editor.
4. Click save script.

Private Repos & GitHub PAT Configuration

To view the size of private repositories:

1. Generate a GitHub Personal Access Token (repo scope for private repos) at github.com/settings/tokens.
2. Open OpenScript and switch to the Secrets tab.
3. Add a secret with:
   • Key: GH_PAT
   • Value: <your_personal_access_token>
4. Click + Add. The secret will sync across your devices via chrome.storage.sync and will be automatically available to the script.