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Extract JS Comment Blocks

Extract JavaScript line and block comments from pasted JavaScript, TypeScript, JSX, or TSX source without executing, compiling, resolving, fetching, bundling, or uploading code.

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Use the tool Quick answer

Extract JS Comment Blocks runs locally in your browser. Your pasted code is not uploaded, compiled, fetched, executed, bundled, stored, or logged.

Paste JavaScript, TypeScript, JSX, or TSX source

0 / 30,000 characters. No upload, storage, or account required.

Remove duplicate extracted values Normalize extracted values

Extracted items

Unique items

Duplicates removed

Extracted JS comment blocks

JavaScript comments will appear here.

JS Comment Blocks workflows

Use this extractor when copied source needs a browser-local inventory before API reviews, release QA, migrations, documentation, cleanup, or handoffs.

Quick answer

Extract JS Comment Blocks is a browser-based extract JS comments 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 comments
Processing: Runs on copied snippets in your browser; no account or saved input.
Workflow: Developer Data Toolkit

What this tool does

Extract JS Comment Blocks scans pasted source as text, lists line and block comments with source lines, and helps review release notes, migration warnings, TODO/FIXME debt, API docs, and stale implementation notes locally in your browser.

Common use cases

Extract JavaScript line comments and block comments from pasted JavaScript, TypeScript, JSX, TSX, config files, tests, generated code, or copied source before release-note drafting, migration planning, code cleanup, documentation, or QA handoffs.

Use Extract JS Comment Blocks 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.

Debug a copied sampleUse a sanitized payload, URL, config value, identifier, stylesheet, markup snippet, or log excerpt when you need a fast check before opening a heavier IDE, schema, or API client.

Prepare a handoff noteTurn messy developer data into a clearer example for tickets, documentation, code review comments, test fixtures, or support notes without exposing secrets.

Chain a safe transformationMove to a related formatter, validator, encoder, decoder, converter, or generator only after the current output still needs another compatible developer-data step.

How to use it

Paste JavaScript, TypeScript, JSX, TSX, framework files, tests, client modules, generated code, or copied source that may contain TODOs, release notes, API docs, or migration comments.
Choose whether duplicate rows should be removed and whether extracted values should be normalized for comparison.
Review extracted comments with line numbers, then copy the clean list for debt triage, release cleanup, migration planning, documentation review, QA checklists, 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

Extract JS Comment Blocks runs locally in your browser. Your pasted code is not uploaded, compiled, resolved, fetched, executed, stored, bundled, or logged.

Practical notes for this tool

Best use case

Use Extract JS Comment Blocks when copied source needs a quick inventory of release notes, TODOs, FIXME items, API documentation comments, migration warnings, or stale implementation notes before cleanup.

Collect release cleanup comments

Example input

// TODO: remove legacy checkout fallback after migration
/* Release note: coupon behavior changed for EU stores */
/** API docs: amount is stored in cents. */

Example output

TODO: remove legacy checkout fallback after migration
Release note: coupon behavior changed for EU stores
API docs: amount is stored in cents.

Privacy and local processing

Comment extraction runs locally in your browser. ClearUtils does not upload, compile, execute, fetch dependencies, store, or log pasted source.

Limitations to know

It does not decide whether a comment is still accurate.
Comments inside strings or generated code can need manual review.
It does not create tickets or modify source files.

Practical FAQ

Should I use this or Extract JS TODO Comments?

Use Comment Blocks when you want all comments, including documentation and release notes. Use Extract JS TODO Comments when you only want action markers such as TODO, FIXME, HACK, BUG, NOTE, or XXX.

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 Comment Blocks execute JavaScript?

No. It scans pasted source as text and does not execute code, compile TypeScript, fetch dependencies, upload, store, or log snippets.

Which comments are included?

It finds common // line comments and /* block comments */ in pasted JavaScript, TypeScript, JSX, TSX, config, and test snippets.

When is this useful?

Use it while collecting release-note clues, migration notes, code cleanup items, QA context, documentation snippets, or copied-source handoffs.

Next steps

Use these routes only when you need a related task or a wider comparison.

Use this tool againReturn to the working panel.Developer Data ToolkitContinue in the same workflow.Developer ToolsBrowse the category hub.Compare similar toolsOpen a filtered directory view.

Extract JS Comment Blocks

JS Comment Blocks workflows

Prepare debt triage

Review behavior and coverage

Clean copied output