You can filter files in a pull request by file extension type, such as .html or .js, lack of an extension, code ownership, or dotfiles.
Using the file filter dropdown
Tip: To simplify your pull request diff view, you can also temporarily hide deleted files or files you have already viewed in the pull request diff from the file filter drop-down menu.
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Under your repository name, click Pull requests.

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In the list of pull requests, click the pull request you'd like to filter.
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On the pull request, click Files changed.

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Use the File filter dropdown menu, and select, deselect, or click the desired filters.

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Optionally, to clear the filter selection, under the Files changed tab, click Clear filters.
