Developer Tools
Extract JS Beacon Calls
Extract navigator.sendBeacon endpoints from pasted JavaScript without sending analytics beacons, executing code, fetching, bundling, or uploading source.
0 / 30,000 characters. No upload, storage, or account required.
JS Beacon extraction workflows
Use this extractor when pasted analytics or unload-handler source needs a local inventory of sendBeacon endpoints before consent, tracking, migration, or release QA review.
Audit analytics endpoints
Pair Beacon endpoints with Extract JS Fetch URLs, Extract JS Cookie Names, and Extract JS Location Assignments.
Review unload behavior
Compare beacons with Extract JS Event Listeners, Extract JS Timer Calls, and JavaScript Formatter.
Clean copied output
Send extracted endpoints to Remove Duplicate Lines, Sort Lines, or Normalize Whitespace.
Quick answer
Extract JS Beacon Calls is a browser-based extract JS Beacon calls for checking copied developer data such as payloads, URLs, encoded values, identifiers, snippets, or logs without sending the input to a server.
- Primary task
- extract JS Beacon calls
- Processing
- Runs on copied snippets in your browser; no account or saved input.
- Workflow
- Developer Data Toolkit
What this tool does
Extract JS Beacon Calls scans pasted JavaScript as text, lists literal navigator.sendBeacon endpoint URLs, removes duplicate rows, and runs locally in your browser.
Common use cases
Extract Beacon API endpoint URLs from pasted JavaScript, TypeScript, analytics snippets, unload handlers, tests, or copied browser source before analytics, consent, migration, or release QA review.
Use Extract JS Beacon Calls when you are working with copied API payloads, logs, encoded values, config snippets, identifiers, or debugging data and need a quick browser-local check before pasting the result into docs, tickets, tests, or another developer tool.
How to use it
- Paste JavaScript, TypeScript, browser snippets, tests, or copied source that may contain this browser API behavior.
- Choose whether duplicate API rows should be removed and whether extracted text should be normalized for comparison.
- Review API usage with source-line context, then copy the list for QA, migration tickets, documentation, release notes, or handoffs.
Example workflow
Copy a small payload or encoded value from an API response, request URL, log line, or config file. Run the focused check here, confirm the output is readable, then continue with related developer data tools such as validation, formatting, decoding, timestamp conversion, or CSV/JSON conversion.
Privacy note
This extractor runs locally in your browser. Your pasted code is not uploaded, executed, rendered, fetched, bundled, stored, logged, or used to trigger browser behavior.
FAQ
These answers focus on copied-snippet workflows, safe sample data, validation boundaries, and what to check before moving output into code, APIs, docs, or tickets.
3 focused answers for this page
Does Extract JS Beacon Calls send requests?
No. It scans pasted source text locally and does not execute JavaScript, call navigator.sendBeacon, send network requests, upload, store, or log snippets.
Which Beacon API patterns are included?
It finds literal endpoint URLs passed to navigator.sendBeacon(...) and window.navigator.sendBeacon(...) so analytics or unload beacons can be reviewed safely.
When is this useful?
Use it while auditing browser APIs, migration notes, release QA handoffs, documentation, or source inventories without running pasted code.