Developer Tools
Extract JS Class Names
Extract JavaScript and TypeScript class names from pasted source snippets without executing, bundling, fetching, rendering, or uploading code.
0 / 30,000 characters. No upload, storage, or account required.
JS class-name extraction workflows
Use this extractor when pasted source needs a browser-local inventory of class declarations before refactors, documentation, or migration reviews.
Map source structure
Pair class names with Extract JS Function Names, Extract JS Variable Names, and Extract JS Export Statements.
Review TypeScript models
Use Extract JS Interface Names, Extract JS Type Aliases, and JSON to TypeScript while documenting model shapes.
Clean copied output
Send extracted names to Sort Lines, Remove Duplicate Lines, or Case Converter.
Quick answer
Extract JS Class Names is a browser-based extract JS class names 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 class names
- Processing
- Runs on copied snippets in your browser; no account or saved input.
- Workflow
- Developer Data Toolkit
What this tool does
Extract JS Class Names scans pasted JavaScript as text, lists class declarations with source lines, removes duplicate names, and runs locally in your browser.
Common use cases
Extract JavaScript and TypeScript class names from pasted source snippets, framework files, React components, Node modules, declaration files, or copied code before source-structure audits, refactors, documentation, cleanup, or migration handoffs.
Use Extract JS Class Names 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, React, Node, framework snippets, or copied source files that contain class declarations.
- Choose whether duplicate class names should be removed and whether extracted names should be normalized for comparison.
- Review class names with source line numbers, then copy the clean list for source audits, migrations, documentation, or refactoring 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
Extract JS Class Names runs locally in your browser. Your pasted code is not uploaded, rendered, fetched, bundled, executed, stored, or logged.
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 Class Names execute code?
No. It scans pasted JavaScript or TypeScript as text and does not execute, compile, bundle, render, fetch assets, upload, store, or log snippets.
Which class names are included?
It finds common class declarations, including exported, default-exported, and abstract class declarations, in pasted source snippets.
When is this useful?
Use it while reviewing source structure, preparing refactors, documenting copied modules, auditing framework files, or planning TypeScript migrations.