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Selenium.Support

4.50.0129M downloads/moSeleniumHQ/selenium ↗New releases in your daily digest, changelog included.

Selenium is a set of different software tools each with a different approach to supporting browser automation. These tools are highly flexible, allowing many options for locating and manipulating elements within a browser, and one of its key features is the support for automating multiple browser platforms. This package contains the .NET bindings for the concise and object-based Selenium WebDriver API, which uses native OS-level events to manipulate the browser, bypassing the JavaScript sandbox, and does not require the Selenium Server to automate the browser.

Last release 7 days ago
30 Sep 2026
Ships fairly regularly
a new release about every 5 weeks
Nearly every release is documented
notes for 60 of the last 60 stable releases
Nothing withdrawn
no release was ever pulled
15 years old
174 releases · first in 2011

Release timeline

174 releases since 2011

Releases

4.50.030 Sept 2026
See the latest changes, included in this release, at https://github.com/SeleniumHQ/selenium/blob/trunk/dotnet/CHANGELOG.
See the latest changes, included in this release, at https://github.com/SeleniumHQ/selenium/blob/trunk/dotnet/CHANGELOG.
Additional notes
Detailed Changelogs by Component

Java | Python | DotNet | Ruby | JavaScript

What's Changed

[dotnet] [bidi] Add image size to capture screenshots by @nvborisenko in #18016

[build] only need to run nightly Grid release after production release by @titusfortner in #18013

[build] merge the release PR automatically once required checks pass by @titusfortner in #18018

[build] move Selenium Manager publishing into sm-snapshot.yml so releases no longer skip it by @titusfortner in #18017

[adr] Network async/event API proposal by @titusfortner in #17685

[adr] Behavioral contract for the low-level WebDriver BiDi layer by @titusfortner in #17786

[java] remove deprecated methods from the HttpClient interface by @joerg1985 in #17993

[rb] cover BiDi key, wheel, release, and setFiles scenarios in the Input spec by @titusfortner in #18022

[py] replace the blanket remote BiDi test suite with an opt-in list by @titusfortner in #18023

[build] always use the latest Selenium Manager code when needed for tests by @titusfortner in #18024

[py] cleanup for ruff b904 raise from by @iampopovich in #18030

[py]: Apply ClientConfig user_agent and extra_headers per connection by @navin772 in #17944

[build] add bazel flag to support cross-compiling all Selenium Manager binaries from Linux or Mac by @titusfortner in #18029

[rb] render WebSocket debug log lines lazily by @ikraamg in #18033

[rb] Implement driver methods for installing and uninstalling web extensions via BiDi by @titusfortner in #17879

[java] Parse each BiDi command response only once by @pujagani in #18011

[py] run the requirements lock check on RBE with a platform-agnostic lock by @titusfortner in #18039

[dotnet] [bidi] Support DestinationFolder optional arg in StartScreencast by @nvborisenko in #18042

[dotnet] [bidi] Add Emulation.SetTextLayoutModeOverride command by @nvborisenko in #18043

[build] use RBE to prepare and build the artifacts for releases by @titusfortner in #18041

[py] move complete GitHub Actions test suite to nightly and run only high value smoke tests for PRs by @titusfortner in #18040

[py] Type BaseOptions.set_capability parameters by @adamtheturtle in #18027

[java] Use one HttpClient.Factory inside one RemoteWebDriver instance by @joerg1985 in #18038

[build] Ignore exec.log recursively by @nvborisenko in #18049

[build] fetch the changelog history since the previous release tag instead of computing a depth by @titusfortner in #18044

[build] prefix workflow names by how they run so the Actions sidebar groups them by @titusfortner in #18053

[py] run grid specific tests on windows during scheduled tests by @titusfortner in #18054

[build] generate webref_cddl.bzl from the BiDi spec's external specifications list by @titusfortner in #18055

[build] update BiDi schema generation to include external spec methods missing due to upstream spec omissions by @titusfortner in #18057

[py] Type WebElement.get_attribute name by @adamtheturtle in #18028

[build] generate the BiDi schema vendor section from Mozilla's Firefox CDDL by @titusfortner in #18060

[dotnet] [build] Include package license/notice files by @nvborisenko in #18048

[dotnet][java][js][py][rb] remove deprecated Firefox profile extension and cert methods by @titusfortner in #18066

[java] resolve exceptions from the W3C state in ErrorHandler by @yashp676 in #18059

[build] Fix the two CDDL repin fallouts breaking every Python target by @AutomatedTester in #18068

[dotnet] [bidi] Eliminate BiDi context on hot path by @nvborisenko in #18069

[py] [dotnet] [java] declare Firefox default preferences in each binding by @titusfortner in #18070

[build] add support for Mozilla's Commands fragment in the BiDi schema by @titusfortner in #18071

[rust] fix flaky tests by @titusfortner in #18073

[js] Align BiDi Generator with the low-level contract by @pujagani in #17973

[java][dotnet] Support relative locators from elements and shadow roots by @Mochxd in #17907

[dotnet] [bidi] Support activity source monitoring by @nvborisenko in #18074

[dotnet] [bidi] Add hasPlannedNavigation param in ContextCreatedEventArgs by @nvborisenko in #18079

[java] Parse each multipart part into its own map in UploadHandler by @yashp676 in #18025

[java] Update TomlConfigTest expectations for tomlj 2.x key order by @diemol in #18083

[java][bidi] Clear fetchError listener in Network.close() by @Mochxd in #17903

[java][bidi] Clear realm listeners in Script.close() by @Mochxd in #18080

[js] Run tests on Grid by @pujagani in #18081

[rust] Show a proper error message if we can't open metdata_path by @rnestler in #18087

[dotnet] Honor the --headless bazel flag in Chrome, Edge and Firefox tests by @titusfortner in #18078

[java] Restore HttpCommandExecutor client and httpClientFactory fields as deprecated by @diemol in #18098

[java] Keep guarded runnables alive when a task throws an Error by @yashp676 in #18091

[dotnet] [bidi] Preserve BiDi additional data in context commands by @nvborisenko in #18097

[dotnet] [bidi] Align CapabilityResponse type name with spec by @nvborisenko in #18099

New Contributors

@ikraamg made their first contribution in #18033

@yashp676 made their first contribution in #18059

@Mochxd made their first contribution in #17907

@rnestler made their first contribution in #18087

Full Changelog: selenium-4.49.0...selenium-4.50.0

From the same repository

SeleniumHQ/selenium

Selenium.WebDriverNuGetSelenium is a set of different software tools each with a different approach to supporting browser automation. These tools are highly flexible, allowing many options for locating and manipulating elements within a browser, and one of its key features is the support for automating multiple browser platforms. This package contains the .NET bindings for the concise and object-based Selenium WebDriver API, which uses native OS-level events to manipulate the browser, bypassing the JavaScript sandbox, and does not require the Selenium Server to automate the browser.

4.49.09 Sept 2026

See the latest changes, included in this release, at https://github.com/SeleniumHQ/selenium/blob/trunk/dotnet/CHANGELOG.

Additional notes

Detailed Changelogs by Component

Java | Python | DotNet | Ruby | JavaScript

What's Changed

[build] improve pre-release workflow ordering by @titusfortner in #17963
[build] track the generated BiDi schema by @titusfortner in #17962
[dotnet] [bidi] Fix various missing fields in DTO by @nvborisenko in #17961
[dotnet] [bidi] Fix mismatch of proxy json property names by @nvborisenko in #17960
[dotnet] [bidi] Fix realm type enum serialization by @nvborisenko in #17959
[dotnet] [bidi] Fix NamespaceUri json property name by @nvborisenko in #17958
[dotnet] [bidi] Avoid massive command descriptors allocation by @nvborisenko in #17965
[dotnet] [bidi] Add browsing context screencast support by @nvborisenko in #17941
[js][py] Capitalize non-Latin text in the getVisibleText atom by @AutomatedTester in #17964
[js][py][rb] derive BiDi field names and enum value types in the schema by @titusfortner in #17966
[py] chore fix for unreachable mypy warnings by @iampopovich in #17969
[py] wire print_pdf_tests.py into the browser test suites by @diemol in #17976
[build] generate compact execution log by @iamricard in #17977
[py] chore: enable mypy disallow untyped decorators and update type hints by @iampopovich in #17974
[grid] Fix 500 when downloading a file whose name contains spaces by @ashrafiucse in #17968
[java] add the LICENSE and NOTICE files to the jars created by @joerg1985 in #17601
[java] Remove deprecated GET /session/{sessionId}/se/files/{fileName} endpoint by @diemol in #17982
[java] shrink published javadoc jars by @titusfortner in #17957
[build] pin the rules_rs zlib bootstrap to an immutable snapshot by @titusfortner in #17985
[build] add a daily workflow to update the pinned CDDL specs by @titusfortner in #17972
[rust] fix Windows architecture detection under WOW64 by @titusfortner in #17987
[build] build Selenium Manager Linux binaries natively and pin the Rust toolchain by @titusfortner in #17988
[py] run the BiDi tests against the Grid server by @AutomatedTester in #17980
[py] fix flaky BiDi input tests that raced the page's autofocus by @AutomatedTester in #17981
[py] raise typed WebDriver errors for BiDi wire error codes by @titusfortner in #17952
[build] bump rules_rs to 0.0.108 by @titusfortner in #17997
[py] remove stale xfail markers from python tests by @aayushisabharwal in #18002
[build] populate linux bazel cache from gh-cache workflow instead of RBE by @titusfortner in #18003
[dotnet] only embed the git revision in SourceLink metadata when stamping by @titusfortner in #18004
[build] run Rust tests and build Selenium Manager from source on Windows by @titusfortner in #17998
[build] ship prebuilt Selenium Manager Linux arm64 binary in all bindings by @titusfortner in #17999
[java] remove try-catch while opening a new window #17754 by @joerg1985 in #17996
[build] add Launchpad fallback for the rules_rs zlib .deb fetch by @AutomatedTester in #18006
[build] Upgrade rules_rs to 0.0.109 and @llvm to 0.8.19 by @AutomatedTester in #17929
[py] add BiDi upload tests that verify files actually reach the server by @AutomatedTester in #18007
[rust] Add license and notice links to Selenium Manager help by @shubmittal in #17986
[rust] Add support for Chrome arm64 on Linux by @dennisameling in #17915
[java] remove let's guess URI encoding by @joerg1985 in #17995
[py] adopt the worthwhile ruff 0.16 rule families (tranches 1 and 2) by @AutomatedTester in #17992

New Contributors

@iamricard made their first contribution in #17977
@ashrafiucse made their first contribution in #17968
@aayushisabharwal made their first contribution in #18002
@shubmittal made their first contribution in #17986

Selenium.Support

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