We're looking for feedback from developers. If you share our frustrations with reviewing code changes, we'd love to talk to you. Most developers already have a favourite diff tool installed locally but there exists very little for reviewing code changes online, so we worked on DiffLens slowly over a number of years. We use it to review our own code changes, and we love it. We'd really appreciate thoughts and insights about the idea and its execution from developers and will answer any questions that come up. Thanks for reading!