--- title: Elastic Distribution of OpenTelemetry Browser release notes description: Release notes for Elastic Distribution of OpenTelemetry Browser. url: https://www.elastic.co/docs/release-notes/edot/sdks/rum products: - Elastic Cloud Serverless - Elastic Distribution of OpenTelemetry Browser (RUM) - Elastic Distribution of OpenTelemetry SDK - Elastic Observability applies_to: - Serverless Observability projects: Generally available - Elastic Stack: Generally available --- # Elastic Distribution of OpenTelemetry Browser release notes Review the changes, fixes, and more in each version of Elastic Distribution of OpenTelemetry Browser (EDOT Browser). To check for breaking changes, see [EDOT Browser Breaking Changes](https://www.elastic.co/docs/release-notes/edot/sdks/rum/breaking-changes). To check for security updates, go to [Security announcements for the Elastic stack](https://discuss.elastic.co/c/announcements/security-announcements/31). ## version.next ### Features and enhancements - Add `ignoreFetchUrls` to exclude URLs from fetch, XMLHttpRequest, and resource timing instrumentation. Strings and regular expressions are supported; OTLP export URLs are always ignored. Ref: [https://github.com/elastic/elastic-otel-rum-js/issues/151](https://github.com/elastic/elastic-otel-rum-js/issues/151) - Add `exportConfig.tracesUrl`, `exportConfig.logsUrl` and `exportConfig.metricsUrl` to export a signal to a custom URL. The URL is used as is, without appending `/v1/`. Ref: [https://github.com/elastic/elastic-otel-rum-js/issues/166](https://github.com/elastic/elastic-otel-rum-js/issues/166) - Add `disableInstrumentations` to turn off selected built-in instrumentations by key (for example, `web-vitals` or `resource-timing`). If you set both `disableInstrumentations` and `instrumentations` for the same key, `disableInstrumentations` takes precedence. Ref: [https://github.com/elastic/elastic-otel-rum-js/pull/170](https://github.com/elastic/elastic-otel-rum-js/pull/170) ### Fixes - Fix export URLs when `exportConfig.url` has no trailing slash. The path separator was missing, so `https://example.com/api` exported to `https://example.com/apiv1/traces`. Ref: [https://github.com/elastic/elastic-otel-rum-js/issues/168](https://github.com/elastic/elastic-otel-rum-js/issues/168) ### Chores - Emit a message when `instrumentations` configuration option is used to warn users the upstream configurations are unstable. Ref: [https://github.com/elastic/elastic-otel-rum-js/issues/152](https://github.com/elastic/elastic-otel-rum-js/issues/152) ## 0.4.0 ### Features and enhancements - Align configuration with the upstream [browser-sdk](https://github.com/open-telemetry/opentelemetry-browser/tree/main/packages/sdk). - Add session tracking. Spans and log records include `session.id`, `session.previous_id`, and `browser.tab.id` attributes. A `session.start` event is emitted when a session starts. Ref: [https://github.com/elastic/elastic-otel-rum-js/issues/115](https://github.com/elastic/elastic-otel-rum-js/issues/115) - Add session-level sampling via `session.sampleRate`. Sampled sessions export automatic RUM telemetry; unsampled sessions disable instrumentations. Spans and logs include `session.sampling_rate` for backend weighting. Refer to [Configure EDOT Browser](/docs/reference/opentelemetry/edot-sdks/browser/configuration#otel_browser_session-sampling). Ref: [https://github.com/elastic/elastic-otel-rum-js/pull/128](https://github.com/elastic/elastic-otel-rum-js/pull/128) ### Chores - Use the new upstream `@opentelemetry/browser-sdk` package to setup traces and logs signal. - Switch to the new upstream `navigation` instrumentation from `@opentelemetry/browser-sdk` package. - It replaces the former `@opentelemetry/instrumentation-browser-navigation`. the new instrumentation is a port from [opentelemetry-js-contrib](https://github.com/open-telemetry/opentelemetry-js-contrib) to [opentelemetry-browser](https://github.com/open-telemetry/opentelemetry-browser). There are no changes in the data model rather than the scope. - This change breaks the configuration interface of instrumentation switching the configuration key from the full scope to a shorter name `navigation`. - Update `typescript` package to match the version in [opentelemetry-browser](https://github.com/open-telemetry/opentelemetry-browser). - SDK has been updated to return a no-op SDK to conform to the types in the previous version. - Internal JSDoc comments have been updated for better type checking. - Remove patching of `window.setImmediate` function in the context manager. The function is deprecated and not available in the majority of browsers. Ref: [https://developer.mozilla.org/en-US/docs/Web/API/Window/setImmediate](https://developer.mozilla.org/en-US/docs/Web/API/Window/setImmediate) ## 0.3.0 ### Chores - Update all `@opentelemetry/*` upstream package dependencies to the latest releases: - [`v2.8.0` release](https://github.com/open-telemetry/opentelemetry-js/releases/tag/v2.8.0) from opentelemetry-js - [`experimental/v0.219.0` release](https://github.com/open-telemetry/opentelemetry-js/releases/tag/experimental%2Fv0.219.0) from opentelemetry-js - [opentelemetry-js-contrib release](https://github.com/open-telemetry/opentelemetry-js-contrib/pull/3524) - [`@opentelemetry/browser-instrumentation v0.5.2` release](https://github.com/open-telemetry/opentelemetry-browser/releases/tag/browser-instrumentation-v0.5.2) from opentelemetry-browser ## 0.2.0 ### Chores - Update all `@opentelemetry/*` upstream package dependencies to the latest releases: - [`v2.7.0` release](https://github.com/open-telemetry/opentelemetry-js/releases/tag/v2.7.0) from opentelemetry-js - [`experimental/v0.215.0` release](https://github.com/open-telemetry/opentelemetry-js/releases/tag/experimental%2Fv0.215.0) from opentelemetry-js - [opentelemetry-js-contrib releases](https://github.com/open-telemetry/opentelemetry-js-contrib/releases) up to 2026-04-28 - [`@opentelemetry/browser-instrumentation v0.3.0` release](https://github.com/open-telemetry/opentelemetry-browser/releases/tag/browser-instrumentation-v0.3.0) from opentelemetry-browser ## 0.1.0 First release of the Elastic Distribution of OpenTelemetry Browser.