FE Dev Tools

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Overview

JSON formatter, URL params parser & Markdown preview. EN/中文.

FE Dev Tools (Front-End Development Toolbox) is a browser-based toolbox built for front-end developers. It bundles three everyday utilities into one clean interface: JSON Formatter Paste any JSON and instantly get a syntax-highlighted, collapsible tree view. Supports custom indentation, one-click copy, and automatic recursive parsing of JSON nested inside strings. URL Params Parser Paste a URL or query string to break search params into a readable key-value tree. Nested JSON values are recursively expanded — no more manual decoding. Markdown Preview Edit on the left, preview on the right in real time. Full support for GFM (GitHub Flavored Markdown), math formulas (KaTeX), and Mermaid diagrams. Why install FE Dev Tools? - 100% offline — your data never leaves the browser  - Bilingual UI (English & Chinese), switchable in one click  - Light / Dark / System theme support  - All tools share a single tab; switching preserves your input  - Lightweight, fast, and ready to use

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Details

Version
0.1.0
Updated
April 10, 2026
Flag concern
Offered by
lianmin.slm
Size
2.06MiB
Languages
English
Developer
Email
lianmin.slm@qq.com
Non-trader
This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

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