Web Dev Toolkit — 66 free browser tools

Everything runs locally in your browser, nothing is uploaded. SEO-friendly, light, no frameworks, fully open source.

Live: https://pyfile-toolkit.github.io/web-toolkit/

What's inside

• 66 instant tools: encoders/decoders, generators (UUID v4/v7, password, lorem, random, barcode EAN-13), formatters (JSON, SQL, XML, markdown table), checkers (contrast, password strength, HTTP status), hash (MD5/SHA1/SHA256), JWT decoder, regex tester, diff checkers (text, JSON), CSS utilities (gradient, box-shadow), HTML minifier, converters (case, CSV↔JSON, color, unix time), games (reaction, simon, typing test, word puzzle, pomodoro) and more.
• Guides (SEO content): Base64, YAML vs JSON, MD5 vs SHA256, WCAG contrast, and "Accept Lightning Payments on a Static Site".
• Monetized landing: LLM API Access (pay per request in USDC via x402 or Nano, no signup, no key, no KYC) → llm-api.html. Live endpoint: https://pyfile-agent.taile3ff35.ts.net (GET / descriptor, GET /v1/models catalog, unpaid POST → full 402 terms).

Stack

Static HTML/CSS/JS on GitHub Pages. Tool logic lives in scripts/*.js (UMD libs, node-testable: node scripts/test-*.js), each page renders in headless Chromium before deploy.

Recent additions

• JSON Diff (leaf-level diff with sorted paths)
• EAN-13 Barcode Generator
• Markdown Table Generator, UUID v4/v7, URL Encoder/Decoder
• Guide: Accept Lightning Payments

Consuming the LLM API

OpenAI-compatible /v1 endpoint; flat 0.005 USDC (x402) or 0.001 XNO (Nano) per request. No account, no API key — the 402 response carries the payment terms. Details on the landing page.

License: MIT. Built by pyfile-toolkit.