Reporting on media bias and the bubbles it creates is nothing new. But last week’s Senate Intelligence Committee hearing provided a rare opportunity to explore a new angle. CNN, MSNBC, and Fox News all aired former FBI director James Comey’s testimony live and uninterrupted. The graphics team at The Washington Post tracked what each network displayed in its lower third caption panel—also called a chyron—and showed it to readers as the hearing unfolded. (You can see the finished piece here.)

As part of the OpenNews Code Convening held earlier this month, we’re releasing Whippersnapper—an automated screenshot tool to keep a visual history of content on the web. It builds on top of other open source projects to capture and upload screenshots of a web page, giving users creative power to track how the internet visually changes.