Extractor JS

A developer-focused tool that extracts JavaScript from HTML, enabling quick review of inline and external scripts for audits, debugging, and security assessments.

Tool coming soon!

We're working hard to get this tool ready for you.

Request Feature / Support

1,156+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

AI Web Tool Generator

Build Your Own Custom Web Calculator in Seconds

Type what tool or calculator you need below. Our AI will build it instantly for your site.

Om dette værktøj

This tool automates the discovery of JavaScript sources within HTML or HTML-like input by parsing the content and enumerating each script block and external reference with metadata.
It distinguishes between inline and external scripts, capturing properties such as source URL, code length, and position within the document, and supports deduplication and optional external fetch for deeper analysis.
Designed for developers, security teams, and QA professionals, it enables rapid inventory, comparison across pages, and automation-ready outputs for audits, debugging, and compliance reviews.
Core features include per-script metadata, deterministic JSON output, and optional export to JSON or CSV for integration with pipelines, scanners, and dashboards. Use cases include security reviews of embedded scripts, performance investigations of third-party code, and documentation of a site's JavaScript footprint.

Save your calculation history with a free account

Sådan bruges

Provide input HTML or source containing scripts.
Configure extraction options to include inline and/or external scripts and toggles for external fetch.
Run extraction to produce a structured script catalog with metadata.
Review results, filter by criteria (inline vs external, size, or source).
Export results as JSON/CSV for automation and reporting.

Frequently Asked Questions

Find hurtige svar

What inputs does the tool accept?

The tool accepts raw HTML or text containing script tags and external script references. It does not require file uploads and returns a structured catalog of scripts with metadata for downstream processing.

How are external scripts handled?

External scripts are listed by their src URL. By default, the tool does not fetch external content; you can enable fetch to retrieve and include the external script contents for deeper analysis, subject to network and CORS constraints.

Does the tool execute the JavaScript it extracts?

No. The extraction is static and non-executable. It identifies sources and code blocks but does not execute or evaluate any script, nor resolve code loaded dynamically at runtime beyond static references.

What is the primary output format?

The primary output is a structured JSON catalog of scripts with fields such as id, kind, src, code, length, and location. The tool also supports exporting to JSON or CSV for automation pipelines.

Need to run multiple calculations?

Create a free account today to unlock unlimited daily runs, access advanced parameters, save your history, and request custom features.

Related Tools

Other useful calculators and utilities you might like

Spotify til MP3-konverter

Konverterer lokalt leverede lydefiler til MP3, muliggør offline-lytning og tvær-enheds-kompatibilite...

Vejafstandscalculator

Et vejafstandscalculator til rejsende, logistikplanlæggere og chauffører til hurtigt at estimere afs...

Aldersberegner

Beregn hurtigt en persons alder baseret på fødselsdato med vores gratis online calculator, egnet til...

Valutaomregner

Omregn hurtigt beløb mellem forskellige valutaer med vores gratis online valutakonverterer, ideel ti...

Din feedback betyder noget

Hjælp os med at forbedre