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Frontend only dev tools. Free for everyone. https://tools.erbs.dev
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Merge pull request 'Switch to zustand for collapsed and dark mode states' (#26) from feature/try-implementing-zustand into develop 
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README.md

OpenDevTools

A privacy-focused collection of client-side developer utilities. All processing happens in your browser—nothing is sent to any server.

Features

Hashing & Cryptography

  • SHA-3 family: SHA3-224, SHA3-256, SHA3-384, SHA3-512
  • Keccak family: Keccak-224, Keccak-256, Keccak-384, Keccak-512
  • SHAKE: SHAKE128, SHAKE256 (configurable output length)
  • SHA-2 family: SHA-224, SHA-256, SHA-384, SHA-512, SHA-512/224, SHA-512/256
  • Legacy algorithms: MD5, SHA-1, RIPEMD-160
  • File hashing: Upload files directly and compute their hashes

ID Generation

  • UUID: v1, v4, v6, v7 (RFC 4122 compliant)
  • ULID: Sortable, URL-friendly unique identifiers
  • UUID/ULID detection: Identify the type and version of any UUID or ULID

Encodings & Decoding

  • Base64: Encode/decode standard Base64
  • Base58: Cryptocurrency-style Base58 encoding
  • Base32: RFC 4648 Base32
  • Base16/Hex: Hexadecimal encoding

Text & Data Tools

  • JSON Formatter: Pretty-print and validate JSON
  • JSON Sorter: Alphabetically sort JSON object keys
  • Lorem Ipsum Generator: Generate placeholder text
  • Text Mockifier: Convert text to mocking format (e.g., hElLo WoRlD)
  • Unicode Character Detector: Inspect any Unicode text — grapheme clusters, code points, UTF-8 bytes, and UTF-16 units
  • Semver Range Parser: Parse semver ranges, check version compatibility, with a built-in cheat sheet

Getting Started

Prerequisites

  • Node.js: 25.x
  • npm: 11.x

Web Build (Static Hosting)

npm run build

Produces an optimized bundle in dist/. Deploy to any static host:

  • Netlify (see netlify.toml)
  • Traditional web server (see nginx.conf)

Docker Deployment

docker build -t opendevtools .
docker run -p 8080:80 opendevtools

Standalone Go Binary

A lightweight, dependency-free option for local deployment.

cd go
./build.sh

build.sh optionally has the --no-vite option to skip compiling the web assets. The build script compiles binaries for Linux, darwin, and Windows and are named respectively.

Security & Privacy

The application doesn't make any HTTP requests to external services during normal operation.
All processing is local, this is by design.

Development

Code Organization

  • Components: React functional components with TypeScript
  • No state management library: Props drilling and React hooks for state
  • Library functions: src/lib/ for shared logic
  • Type safety: Full TypeScript with no any types

Linting & Type Checking

  • ESLint configuration: eslint.config.js
  • TypeScript configs: tsconfig.json, tsconfig.app.json, tsconfig.node.json
  • Run checks: npm run lint

Code Generation

The Unicode block ranges in src/lib/unicodeRanges.ts are auto-generated from scripts/Blocks.txt (Unicode standard). To regenerate after updating Blocks.txt:

npm run generate:unicode

Build Verification

See the .forgejo/workflow/ci.yml for CI build.

License

See LICENSE file for details.