Article version: GitHub.com
Editing files in your repository
You can edit files directly on GitHub in any of your repositories using the file editor.
Tip: If a repository has any protected branches, you can't edit or upload files in the protected branch using GitHub. For more information, see “About protected branches."
You can use GitHub Desktop to move your changes to a new branch and commit them. For more information, see "Committing and reviewing changes to your project."
Note: GitHub's file editor uses CodeMirror.
In your repository, browse to the file you want to edit.
In the upper right corner of the file view, click to open the file editor.
On the Edit file tab, make any changes you need to the file.
Above the new content, click Preview changes.
At the bottom of the page, type a short, meaningful commit message that describes the change you made to the file. You can attribute the commit to more than one author in the commit message. For more information, see "Creating a commit with multiple co-authors."
Below the commit message fields, click the email address drop-down menu and choose a Git author email address. Only verified email addresses appear in this drop-down menu. If you enabled email address privacy, then
<username>@users.noreply.github.comis the default commit author email address. For more information, see "Setting your commit email address."
Below the commit message fields, decide whether to add your commit to the current branch or to a new branch. If your current branch is
master, you should choose to create a new branch for your commit and then create a pull request. For more information, see "Creating a new pull request."
Click Propose file change.