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Blog Posts - 2025

Selenium Conference and Appium Conference 2025, Valencia Spain
LambdaTest Becomes a Selenium Development Partner
Selenium Community Live - Episode 4
Selenium 4.29 Released!
Removing ChromeDevTools Support For Firefox
Selenium Community Live - Episode 2
Selenium 4.28 Released!

Selenium Conference and Appium Conference 2025, Valencia Spain

By Pallavi Sharma | Monday, April 21, 2025

Selenium and Appium projects joined hands together for the 2025 annual conference of both, which was held from March 26th - March 28th in Valencia, Spain. The official web page of the conference can be found here

The event took place at the beautiful venue of Veles e Vents.

On March 26th, there were Workshops, which were enthusiastically attended by participants from across the globe. On the 26th March evening, the conference organised Speaker’s Dinner, which provided a fun space to sit, talk and know other better.

We are thankful to our esteemed speaker group, who joined us from all over the world and helped make the event a success. Details about the speakers for the event is available here - Speakers of the Conference

The main event started from 27th of March and ran through 28th March evening. The event was attended by close to 400 global participants. We are thankful to each of them, for their presence which made the event worthwhile.

Conference also provided scholarship to 4 people who were chosen after a tough selection process to attend the conference. We thank all our Sponsors who collaborated and helped make the event possible.

The video recording, presentations and photographs from the main event can be found here - Videos, Photos and More..

Conference, also ran Pre Conference webinars which helped showcase high rated talks which couldn’t make it to the end program to the audience. The details of the same are available here - Pre Conference Webinars

The conference program chair was Diego Molina. Diego helmed all the activities of the conference with great leadership and meticulous supervision.

The conference was supported by a wide group of professionals who participated in volunteer capacity as reviewers and organizers of the event. More details about them can be found here - Organizers & Program Review Committee .

The entire event was professionally managed by the event organiser company OneStic. They ensured smooth flow of the event. Special mention to Jesus Sanchez for going out of the way to ensure everyone was well taken care of.

To explore more about our previous conferences and the next ones don’t forget to subscribe to our official You Tube Channel Selenium Conference Official YouTube Channel.

LambdaTest Becomes a Selenium Development Partner

The Selenium Project is pleased to welcome LambdaTest as an official Development Partner.

By Sri Harsha @harsha509 | Thursday, April 10, 2025

We are excited to share that LambdaTest has joined as a development partner for Selenium. This partnership highlights our shared commitment to innovation, community engagement, and collaborative progress in the test automation space. LambdaTest’s dedicated Open Source Program Office (OSPO) is contributing valuable expertise and resources that will further enrich the Selenium ecosystem.

A Partnership Rooted in Open Source Values

At the heart of Selenium lies a vibrant community dedicated to open standards and continuous improvement. Our collaboration with LambdaTest is designed to strengthen the community by channeling focused contributions from their OSPO—improving tools, integrations, and documentation for Selenium users around the world.

About LambdaTest

LambdaTest is a platform that empowers businesses to accelerate time to market through intelligent, cloud-based test authoring, orchestration, and execution. With over 15,000 customers and 2.3 million+ users across 130+ countries, LambdaTest is the trusted choice for modern software testing.

Key Points of the Partnership

Open Source Integrity: Selenium continues to flourish as a community-led project, embodying the true spirit of open source.
Dedicated OSPO Contributions: The team at LambdaTest is actively enhancing Selenium by improving documentation, bolstering community support, and enabling better integrations. Their efforts are aimed at empowering the global Selenium user base.
Community-Focused Innovation: By pooling our collective expertise, we are well-positioned to drive new solutions and elevate test automation practices to new heights.

What This Partnership Means for the Community

The contributions from LambdaTest’s OSPO are set to bring notable benefits to the broader testing landscape:

Faster Development: The infusion of dedicated engineering resources will accelerate the development of new features and improvements.
Improved Stability: Increased efforts in testing and quality assurance will help quickly identify and resolve issues.
Better Documentation: Enhanced documentation will make it easier for users to dive into Selenium and harness its advanced capabilities.
Enhanced Community Support: LambdaTest will play an active role in organizing and sponsoring community events, fostering rich collaboration and knowledge sharing.

Looking Ahead

This partnership is more than a technical alliance—it reaffirms our belief in the power of community-led development. The proactive contributions from LambdaTest’s OSPO will help create a more connected and empowered test automation community. We invite you to join our upcoming workshops, webinars, and discussion forums to see firsthand how these collaborative projects will shape the future of open source test automation.

Formalizing LambdaTest as a Selenium development partner is a milestone that celebrates our commitment to innovation and community spirit. With the dedicated efforts from LambdaTest’s OSPO, we continue our mission to enhance the Selenium ecosystem for every developer and tester worldwide.

Join us on this journey toward a future that is more resilient, supportive, and inventive in the realm of test automation.

Selenium Community Live - Episode 4

By Pallavi Sharma | Wednesday, March 19, 2025

The fourth episode of Selenium Community Live happened on March 19th, 2025, with speaker Michael Mintz, event hosted by Pallavi Sharma

You can watch the episode on YouTube here- Episode 4 on YouTube or You can watch the episode on LinkedIn here- Episode 4 on LinkedIn

Selenium Community Live - Episode 4

Michael Mintz is creator of Selenium Base, an all in one Browser Automation Framework, built over Selenium WebDriver Python bindings. The framework is well known and used in the WebDriver Ecosystem community for testing, web scraping, web crawling and stealth purposes. You can find out more about Selenium Base here - Selenium Base

Meet the Speakers:

Michael Mintz

Watch the Recording

Couldn’t join us live? Watch the entire episode here - 📹 Recording Link: Watch the Event Recording on YouTube

To know more about Selenium Base, please follow the link Explore more on Selenium Base

In case you were wondering what happened to episode 3, it was cancelled but will be scheduled in coming weeks. Thank you! Stay tuned as we bring the next! Subscribe here to the Selenium HQ Official YouTube Channel.

Selenium 4.29 Released!

Today we’re happy to announce that Selenium 4.29 has been released!

By Diego Molina @diemol | Thursday, February 20, 2025

We’re very happy to announce the release of Selenium 4.29 for Javascript, Ruby, Python, .NET, Java and the Grid! Links to everything can be found on our downloads page.

🚀 Major Highlights

Final removal of Firefox CDP support across all language bindings.
New WebDriver BiDi capabilities: Implementation of setCacheBehavior and getClientWindows commands.
Grid UI Fixes: Live session view now works as expected.
PrintOptions enhancements: Support for predefined and custom paper sizes.
Nullability annotations continue to improve type safety in .NET.
BiDi improvements: Network response handlers and optimizations.
Enhancements to logging options in Java.

🔹 Language-Specific Changes

Java

Implemented setCacheBehavior for WebDriver BiDi. (#15130)
Enhanced PageSize class to support predefined and custom paper sizes. (#15052)
Ensured purging dead nodes service interval is configurable. (#15175)
Improved handling of Selenium logging options. (#15197)
Added support for getClientWindows in WebDriver BiDi. (#14869)

Python

Fixed installation issues for source distributions. (#15128)
Updated PrintOptions to support different page sizes. (#15064)
Documented cygwin path usage in send_keys(). (#15275)
Fixed return type and docstrings for get_downloadable_files(). (#15292)

JavaScript

Implemented setCacheBehavior for WebDriver BiDi. (#15136)
Fixed dependencies for novnc v1.5.0. (#15005)
Added support for getClientWindows in WebDriver BiDi. (#15248)

Ruby

Removed Java date dependency. (#15122)
Added WebDriver BiDi network response handler. (#14900)
Implemented WebDriver BiDi setCacheBehavior command. (#15114)

.NET

Improved BiDi exception handling when it is not enabled. (#15163)
Added nullability annotations across multiple modules, including Command, DriverService, FirefoxProfile, Manage(), SafariOptions, and Navigate().
Updated WebAuth credential handling. (#15201)
Simplified creation of network types. (#15267)
Improved logging stability. (#15257)

Docker Selenium

Publish Node/Standalone images with the latest Grid core version and browser backward versions
Update container environment to JDK21 (#2642)
Node base with share system certificate support (#2653)
Node container is able to restart and retry to register when register-period exceeded (#2662)
Selenium Grid scaler in KEDA feature preview
- Add trigger param to set custom capabilities for matching specific Nodes (KEDA#6536)
- Add trigger param for Node enables managed downloads capability (KEDA#6570)
Helm config: Set K8s node IP to all components via env var KUBERNETES_NODE_HOST_IP in template (#2668)
See all changes

We thank all our contributors for their incredible efforts in making Selenium better with every release. ❤️

For a detailed look at all changes, check out the release notes.

Contributors

Special shout-out to everyone who helped the Selenium Team get this release out!

Selenium

Swastik Baranwal

Alex

Navin Chandra

Romain Tartière

Vinaysimha Varma Yadavali

@yvsvarma

Selenium Docs & Website

Andrey Vorobev

Swastik Baranwal

ian zhang

Ujjwal Kumar Singh

Benjamin Rosemann

Pallavi

Docker Selenium

Peter Upfold

Sten Arthur Laane

Amar Deep Singh

Oskar Budziosz

Ritesh Khadgaray

Selenium Team Members

Thanks as well to all the team members who contributed to this release:

Agustin Pequeno

David Burns

Boni García

Corey Goldberg

Diego Molina

Sri Harsha

Nikolay Borisenko

Alex Rodionov

Puja Jagani

Michael Render

Simon Benzer

Simon Stewart

Titus Fortner

Viet Nguyen Duc

Stay tuned for updates by following SeleniumHQ on:

Happy automating!

Removing ChromeDevTools Support For Firefox

Today we’re happy to announce ChromeDevTools support for Firefox is removed and WebDriver BiDi is paving the path forward

By Puja Jagani @pujagani | Monday, February 03, 2025

Selenium has deprecated support for Chrome DevTools Protocol (CDP) for Firefox in the last two versions (4.27 and 4.28). Our typical removal policy is to deprecate support for two versions, allowing users sufficient time to update their codebase, and then remove it from the third version onwards.

Starting with Selenium 4.29.0, CDP support for Firefox has been fully removed—and for good reason. Selenium’s CDP implementation for Firefox was always partial, meaning it never had complete feature parity with Chrome. Meanwhile, Firefox is shifting towards WebDriver BiDi, the future of cross-browser automation. Aligning with this, Firefox has announced that starting with Firefox 129, CDP will no longer be enabled by default. Read more here: [https://fxdx.dev/deprecating-cdp-support-in-firefox-embracing-the-future-with-webdriver-bidi/].

To support this transition, Selenium is removing CDP support for Firefox, as a major portion of WebDriver BiDi functionality is now available across all Selenium language bindings. Selenium is committed to staying in sync with browser vendors and the latest developments in the WebDriver BiDi protocol. This step brings us closer to standardized, browser-agnostic automation.

If you were using CDP in Selenium for Firefox, now is the time to switch to WebDriver BiDi. Start your journey with Selenium’s WebDriver BiDi examples here.

Selenium Community Live - Episode 2

By Pallavi Sharma | Tuesday, January 21, 2025

The second episode of Selenium Community Live happened on Jan 21st, 2025, with speaker David Burns, event hosted by Pallavi Sharma

You can watch the episode here- Selenium Community Live - Episode 2

Selenium Community Live - Episode 2

David Burns, Selenium Project Leadership Member, Chair W3C Browser Testing and Tools Workgroup, Head Open source and Developer Advocacy at Browser Stack was the speaker for the episode. David spoke about Web Browsers and Browser engines, and how while automating them we should be aware of the underlying software we are automating, even the platform makes a difference! Thank you everyone who joined the community event.

Meet the Speakers:

David Burns

Watch the Recording

Couldn’t join us live? Watch the entire episode here - 📹 Recording Link: Watch the Event Recording on YouTube

David also runs a blog, and if you are interested in knowing internals of Selenium explore the link - Blog By David

Stay tuned as we bring the next! Subscribe here to the Selenium HQ Official YouTube Channel.

Selenium 4.28 Released!

Today we’re happy to announce that Selenium 4.28 has been released!

By Diego Molina @diemol | Monday, January 20, 2025

We’re very happy to announce the release of Selenium 4.28 for Javascript, Ruby, Python, .NET, Java and the Grid! Links to everything can be found on our downloads page.

Highlights

Chrome DevTools support is now: v132, v131, and v130 (Firefox still uses v85 for all versions)
Expanded nullability annotations for better type safety in .NET and Java.
Refinements to Selenium Grid, including more efficient session handling and node management.
Packaging and installation enhancements across Python and Ruby for smoother integration.
Documentation improvements across Python and .NET libraries, ensuring clearer developer guidance.
Updated language-specific implementations for modern development standards.

Changes by Language

Java

Encapsulation Improvements: Encapsulated additionalCommands with a getter method (#14816).
Nullability Enhancements: Added nullness annotations for enums, exceptions, interactions, logging, and Proxy (#15105, #15094).
SpotBugs Updates: Excluded specific warnings to maintain clean code (#14766).
Improved Logging: Enhanced error handling and message clarity in exceptions (#15116).
Relative Locators: Updates for RelativeBy locators, simplifying usage (#14482).

Python

Packaging Fixes: Addressed issues for smoother installation (#14806, #14823).
Documentation Upgrades: Added comprehensive docstrings to multiple classes, including WebDriverWait, ExpectedConditions, and WebElement (#15077, #15096).
Refactoring: Moved project metadata and improved code organization (#14837).
Enhanced CDP Command Handling: Added execute_cdp_cmd to Remote (#14809).

JavaScript

Federated Credential Management Support: Introduced support for Federated Credential Management, enhancing authentication capabilities. (#15008)
Node.js Version Specification: The minimum required Node.js version has been specified as 18.20.5.
Improved Logging: Added detailed error messages for invalid cookie name validation in getCookie and deleteCookie methods, aiding in debugging.
Diagnostic Logging for Safari: Enabled diagnostic logging for Safari, facilitating better issue tracking and resolution.

.NET

Nullability Improvements: Added annotations to SessionId, Alert, CookieJar, Logs API, and more (#14840, #14874).
Refactored DevTools: Modernized code style and enhanced JSON parsing (#14990).
Future-Proofing: Added notes and deprecated setters for better immutability (#15107).
Testing Updates: Migrated NUnit assertions to modern syntax (#14870).

Ruby

BiDi Network Enhancements: Added request handlers for authentication and interception (#14751).
Cookie Management Updates: Added tests and improved handling for cookies (#14843).

Grid

Improved Session Management: Enhanced slot matching and session queue handling (#14914).
Dynamic Grid Enhancements: Added video recording capabilities on browser node (#15047).
Reliability Boost: Improved HTTP request retries and node health checks (#14924).

Docker Selenium

Update procedure to install Firefox in Node/Standalone Firefox (#2550)
Enable video recorder in Node/Standalone containers (#2539)
Env var SE_ENABLE_TRACING=false is not required when starting the container anymore (#2549)
Env var SE_NODE_PLATFORM_NAME & SE_NODE_BROWSER_VERSION to adjust default Node stereotypes for autoscaling (#2520, #2525)
Selenium Grid scaler in KEDA improvements (KEDA#6437, KEDA#6477)
See all changes