After you create issue and pull request templates in your repository, contributors can use the templates to open issues or describe the proposed changes in their pull requests according to the repository's contributing guidelines. For more information about adding contributing guidelines to a repository, see "Setting guidelines for repository contributors."
Issue templates
When you create issue templates for your repository using the issue template builder, contributors can select the appropriate template when they open new issues in the repository.
Issue templates are helpful when you want to provide guidance for opening issues while allowing contributors to specify the content of their issues.
Using the template builder, you can specify a title and description for each template, add the template content, and either commit the template to the default branch or open a pull request in the repository. The template builder automatically adds the YAML front matter markup that is required for the template to show on the new issue page. For more information, see "Configuring issue templates for your repository."
You can customize the issue template chooser that people see when creating a new issue in your repository by adding a config.yml file to the .github/ISSUE_TEMPLATE folder. For more information, see "Configuring issue templates for your repository."
Issue templates are stored on the repository's default branch, in a hidden .github/ISSUE_TEMPLATE directory. If you create a template in another branch, it will not be available for collaborators to use. Issue template filenames are not case sensitive, and need a .md extension. To be displayed with a checkmark in the community profile checklist, issue templates must be located in the .github/ISSUE_TEMPLATE folder and contain valid name: and about: keys in the YAML frontmatter (for issue templates defined in .md files) or valid name: and description: keys (for issue forms defined in .yml files).
It is possible to manually create a single issue template in Markdown using the legacy issue template workflow, and project contributors will automatically see the template's contents in the issue body. However, we recommend using the upgraded multiple issue template builder to create issue templates. For more information about the legacy workflow, see "Manually creating a single issue template for your repository."
You can create a security policy to give people instructions for reporting security vulnerabilities in your project. For more information, see "Adding a security policy to your repository."
Pull request templates
When you add a pull request template to your repository, project contributors will automatically see the template's contents in the pull request body.
You must create templates on the repository's default branch. Templates created in other branches are not available for collaborators to use. You can store your pull request template in the repository's visible root directory, the docs folder, or the hidden .github directory. Pull request template filenames are not case sensitive, and can have an extension such as .md or .txt.
For more information, see "Creating a pull request template for your repository."