The latest articles on DEV Community by Ethan Lee (@leethana). https://dev.to/leethana https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F3917442%2Fca005030-80a3-4f24-8ed4-b5b478eb899f.png https://dev.to/leethana en Ethan Lee Mon, 25 May 2026 04:32:08 +0000 https://dev.to/leethana/submission-for-gemma-4-challenge-turtlebrowse-5c6o https://dev.to/leethana/submission-for-gemma-4-challenge-turtlebrowse-5c6o <p><em>This is a submission for the <a href="https://dev.to/challenges/google-gemma-2026-05-06">Gemma 4 Challenge: Build with Gemma 4</a></em></p> <h2> What I Built </h2> <p>I built a fully local, open-source agentic browser. The browser is powered by the effective 2B variant of Gemma 4. Turtlebrowse is built with Java CEF, Swing, and JavaFX. Comes with multiple Material 3 Expressive themes too.</p> <h2> Demo </h2> <p>Download Turtlebrowse <a href="https://turtlebrowse.ingstudios.dev" rel="noopener noreferrer">here</a>.</p> <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fcg6c7rcrscj6rlzijw5q.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fcg6c7rcrscj6rlzijw5q.png" alt="Agentic search tool" width="799" height="504"></a></p> <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fqd8ku8njd6kes7wszynx.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fqd8ku8njd6kes7wszynx.png" alt="Agentic navigation" width="800" height="450"></a></p> <h2> Code </h2> <p><a href="https://github.com/ingStudiosOfficial/turtlebrowse" rel="noopener noreferrer">GitHub</a></p> <h2> How I Used Gemma 4 </h2> <p>I used the E2B variant which can run on edge devices. I utilized Gemma 4's multimodal input such that it can process screenshots of the browser to understand the page better. I also used Gemma 4's tool calling abilities via Ollama to interact with pages, summarize pages, identify elements on pages, understand a visual representation of the page and more.</p> <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fuagneu7jcmj8bg1qglds.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fuagneu7jcmj8bg1qglds.png" alt="Banner" width="800" height="400"></a></p> devchallenge gemmachallenge gemma