Readable Dev Tools

Code Refactor Rules

Only transformations that can be judged without changing behavior are applied.

Guard clauses are preferred for reducing nesting, while risky cases are preserved.

Variable names, function names, and meaningful operation order are not rewritten.

Without AST parsing, complex code is formatted conservatively instead of forced.

Tools

JSON Formatter

Formats unreadable JSON with two-space indentation, key summaries, and JSON Path lookup.

Log Formatter

Cleans log levels and timestamps, extracts request IDs, and filters long logs.

Code Refactor

Applies safe guard-clause refactors, removes else after return, and explains changes.

Stack Trace Formatter

Organizes errors and stack frames, counts frames, and folds vendor noise.

Minify Beautifier

Beautifies minified JS/CSS and reports line and size changes.

Diff Viewer

Compares before/after text, formats diffs, and applies unified diff patches.

Text Formatter

Normalizes spacing, keeps Markdown readable, removes duplicates, and sorts lines.

Secret Detector / シークレット検出

Finds AWS keys, tokens, passwords, private keys, and database URLs locally with masked results.

JWT Decoder / JWT解析

Decodes JWT header and payload locally, summarizes claims, and warns that signatures are not verified.

Regex Tester / 正規表現テスター

Tests regex patterns against sensitive text in the browser with matches, groups, and replace preview.

Env Compare / .env比較

Compares .env files, highlights missing, added, changed, duplicate, empty, and secret-looking keys.

JSON Schema Generator / JSONスキーマ生成

Generates JSON Schema and TypeScript types from JSON without uploading the sample data.

No data leaves your browser.

Processing Summary / 処理サマリー

Warning / 注意

Before / After Preview