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‎website_and_docs/content/blog/2025/selenium-4-30-released.md

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---
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title: "Selenium 4.30 Released!"
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linkTitle: "Selenium 4.30 Released!"
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date: 2025-03-21
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tags: [ "selenium" ]
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categories: [ "releases" ]
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author: Diego Molina [@diemol](https://www.diemol.com)
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images:
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- "/images/blog/2025/selenium_4.30.jpg"
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description: >
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Today we're happy to announce that Selenium 4.30 has been released!
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---
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We're very happy to announce the release of Selenium 4.30 for Javascript, Ruby, Python, .NET, Java
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and the Grid!
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This version brings key updates across the project, with improvements to the BiDi protocol,
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extensive nullability work in .NET, better error handling, and various bug fixes. It’s a great
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step forward as we continue strengthening Selenium’s stability, consistency, and support across
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all supported languages.
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Links to all assets can be found on our [downloads page][downloads].
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---
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## 🚀 Major Highlights
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- Continued enhancements to **BiDi (Bi-Directional Protocol)** support across Java, Ruby, .NET, JavaScript, and Python.
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- Extensive **nullability annotations** added throughout the .NET bindings.
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- Selenium Manager (Rust) now supports **nightly Grid builds**.
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- Improvements to testing infrastructure and developer experience, including better packaging, linting, and platform support.
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- Numerous bug fixes and refactors across the Grid, bindings, and devtools.
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---
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## 🔹 Language-Specific Changes
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### **Java**
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- Implemented BiDi commands: `getBidiSessionStatus` and `Permissions`.
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- Refined logger initialization.
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- Removed deprecated, non-W3C compliant `NetworkConnection` interface.
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- Added support for setting viewport and handling CDP warnings gracefully.
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### **Python**
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- Improved devtools test handling and documentation.
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- Fixed packaging issues and test discovery for `pytest`.
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- Added docstring updates for clarity and modernization.
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- Replaced strings with `By` class attributes.
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- Improved socket resource management and error handling.
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- Updated `expected_conditions` type annotations.
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### **JavaScript**
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- Fixed BiDi tests for Chrome and Firefox on CI.
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- Implemented BiDi `permissions` module commands.
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### **Ruby**
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- Fixed a compatibility issue with Ruby 3.1 ("no anonymous block parameter").
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- Added BiDi support for:
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- Setting viewport
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- Activating browser context
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- Providing responses
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- Added a `target_type` parameter to devtools.
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### **.NET**
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- Enabled **nullable reference types** across many components.
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- Trimmed away CDP for **AOT** applications.
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- Enhanced BiDi support including:
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- `SetFiles` command
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- Support for `UnhandledPromptBehavior`
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- Event support like `OnNavigationCommitted`
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- Encapsulation of the transport layer
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- Improved `WebDriver`, `WebElement`, and capabilities types with nullability.
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- Introduced `SystemClock` singleton.
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- Revisited and fixed test execution on Windows/macOS.
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- Removed obsoleted members for 4.30.
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### **Grid & Selenium Manager**
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- Added trace logging for session stop events in Grid.
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- Improved configuration options for server timeouts and session handling.
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- Added support in Selenium Manager (Rust) for **nightly Grid builds**.
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- Enhanced ability to trace and view live sessions.
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### **Docker Selenium**
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- Publish Node/Standalone images with the latest Grid core version and browser backward versions
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- Update container environment to
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JDK21 ([#2642](https://github.com/SeleniumHQ/docker-selenium/pull/2642))
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- Node base with share system certificate
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support ([#2653](https://github.com/SeleniumHQ/docker-selenium/pull/2653))
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- Node container is able to restart and retry to register when `register-period`
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exceeded ([#2662](https://github.com/SeleniumHQ/docker-selenium/pull/2662))
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- Selenium Grid scaler in KEDA feature preview
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- Add trigger param to set custom capabilities for matching specific
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Nodes ([KEDA#6536](https://github.com/kedacore/keda/pull/6536))
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- Add trigger param for Node enables managed downloads
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capability ([KEDA#6570](https://github.com/kedacore/keda/pull/6570))
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- Helm config: Set K8s node IP to all components via env var KUBERNETES_NODE_HOST_IP in
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template ([#2668](https://github.com/SeleniumHQ/docker-selenium/pull/2668))
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- [See all changes](https://github.com/SeleniumHQ/docker-selenium/releases)
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<br>
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We thank all our contributors for their incredible efforts in making Selenium better with every
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release. ❤️
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For a detailed look at all changes, check out
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the [release notes](https://github.com/SeleniumHQ/selenium/releases/tag/4.30).
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<br>
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## Contributors
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**Special shout-out to everyone who helped the Selenium Team get this release out!**
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### [Selenium](https://github.com/SeleniumHQ/selenium)
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<div class="d-flex justify-content-center">
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<div class="col-11 p-4 bg-transparent">
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<div class="row justify-content-center">
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{{< gh-user "https://api.github.com/users/yvsvarma" >}
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</div>
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</div>
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</div>
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### [Selenium Docs & Website](https://github.com/SeleniumHQ/seleniumhq.github.io)
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<div class="row justify-content-center">
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<div class="col-11 p-4 bg-transparent">
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{{< gh-user "https://api.github.com/users/Delta456" >}}
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</div>
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</div>
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</div>
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### [Docker Selenium](https://github.com/SeleniumHQ/docker-selenium)
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<div class="row justify-content-center">
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<div class="col-11 p-4 bg-transparent">
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</div>
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</div>
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</div>
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### [Selenium Team Members][team]
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**Thanks as well to all the team members who contributed to this release:**
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<div class="row justify-content-center">
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<div class="col-11 p-4 bg-transparent">
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<div class="row justify-content-center">
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{{< gh-user "https://api.github.com/users/aguspe" >}}
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{{< gh-user "https://api.github.com/users/cgoldberg" >}}
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{{< gh-user "https://api.github.com/users/diemol" >}}
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</div>
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</div>
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</div>
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Stay tuned for updates by following SeleniumHQ on:
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- [Mastodon](https://mastodon.social/@[email protected])
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- [BlueSky](https://bsky.app/profile/seleniumconf.bsky.social)
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- [LinkedIn](https://www.linkedin.com/company/selenium/)
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- [Selenium Community YouTube Channel](https://www.youtube.com/@SeleniumHQProject/streams)
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- [X (Formerly Twitter)](https://twitter.com/seleniumhq)
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Happy automating!
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[downloads]: /downloads
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[bindings]: /downloads#bindings
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[team]: /project/structure
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[BiDi]: https://github.com/w3c/webdriver-bidi

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