RUM Browser SDK release notes

Improved user interaction instrumentation with richer element metadata.

Enriched spans with RUM context (cx_rum) to improve RUM-to-tracing correlation. Learn more

Improved web vitals attribution data by preventing deep nesting.

Web vitals listeners now run outside the zone.

Improved error stack trace handling.

Added support for excluding specific instrumentations from session sampling.

Added support for error logging of non-JSON-serializable error properties.

Improved session recording with the immediateFlush option to capture short-duration sessions (under 10 seconds). Learn more

Added support for the US3 Coralogix domain. Learn more

Improved stack trace truncation.

SDK web APIs now run outside zone.js by default for Angular applications.

Improved MFE (Micro-Frontend) stack trace metadata extraction stability and fixed a potential infinite loop in navigation tracking.

Added numeric ID grouping to the default URL blueprinter.

Enriched spans with RUM context (cx_rum) to improve RUM-to-tracing correlation.

Added a new zoneless CDN build for Angular consumers.

Improved error instrumentation stability and performance.

Added optimized mutation handling in the session recorder.

Reverted a mutation counter limit that could cause incomplete session recordings.

Improved session recorder performance.

Breaking change: the Total Blocking Time (TBT) web vitals metric is no longer collected by default, reducing overhead. Enable it explicitly if you need it.

Added stack traces to console error logs.

Improved trace metadata encoding.

Introduced the tracesExporter callback, enabling custom processing or exporting of collected trace events. Learn more

Snapshot context is now triggered when setUserContext is called.

Added support for a custom propagator.

Fixed URL encoding of template placeholders in page fragments.

Added ignoreProxyUrlParams, which lets you skip appending the Coralogix endpoint to the proxy URL.

Added a user fingerprint. The fingerprint is generated and stored on each user's machine for reuse.

Improved SDK shutdown handling.

Added Web Worker monitoring support.

Added sessionId to span attributes, fixed network span additions, and improved global span handling in idle mode.

Bundle size optimization, including bundling libraries from CommonJS to ESM.

Added missing PerformanceNavigationTiming fields to the load time (LT) event.

Traceparent propagation enhancements, improved span creation, and switched internal warnings to debug level.

Optimized user agent parsing.

Omitted the INP attribution property to reduce log payload size.

Fixed user interaction instrumentation from always being enabled.

Added CDN builds (ES5 and ES2015).

Added Web Worker error handling.

Added npm compatibility for older browsers.

Added CDN compatibility for older browsers.

Added support for Smart TV user agents.

Reduced false recording sessions sent to the API.

Added support for passing labels to the custom logs API (log, warn, debug, and others).

Lazy loading of the session recorder for improved load time and reduced bundle size.

Improved Performance Observer compatibility.

Improved initialization for server-side rendering (SSR) applications.

Breaking change: optimized the SDK with rollup bundling and added ES5 support. Import paths changed (for example, from @coralogix/browser/src/types-external to @coralogix/browser).

Reverted rollup bundling due to unexpected issues.

Bundled the project with rollup and added ES5 support.

Added a changelog mechanism.

Added custom spans, plus custom data and labels for captured errors. Learn more

Fixed a missing pako dependency in the worker.

Hotfix for the TTI import.

Added support for MFE (Micro-Frontend). Learn more

Removed fetch resources, implemented allowHeaders for FetchInstrumentation, and added screenshots and start/end time measurements.

Ensured proxyUrl is added to ignoreUrls.

Allowed the traceparent header to be sent when the sample rate is 0.

Fixed OpenTelemetry labels.

Added TTI metric reporting and fixed an SDK masking bug.

Switched to a self-hosted worker for session recording.

Memory usage improvements.

Masking now applies only to clickable elements.

Removed lazy loading propagators and added advanced sampling.

Added timing, custom measurement, and allowed tracing URLs.

TBT refactor.

captureError now reports on handled errors.

Added page referer and soft navigation support.

Added support for multi-page applications.

Fixed page fragments that contain an anchor (#) in the URL.

Added snapshot context end.