I Built 75 Free Browser-Based Developer Tools — No Signup, No Tracking

The Problem Every time I need a quick tool — convert JSON to YAML, generate a UUID, check a regex — I end up on a site plastered with ads, demanding signups, or uploading my data to their servers. The Solution: ToolPile I built ToolPile — 75 free tools that run entirely in your browser. Zero data collection, zero tracking, zero ads. Each tool is a single self-contained HTML file with inline CSS and JS. No frameworks, no bundlers, no server-side processing. What's Included Developer Tools (30+) JSON Formatter / Validator / to YAML / to CSV Regex Tester with live matching and capture groups JWT Decoder — decode headers + payload, check expiry Base64 Encoder/Decoder — text and image support CSS/JS Minifier — instant code compression SQL Formatter — beautify SQL queries .gitignore Generator — Node, Python, Java, Go, Rust templates Robots.txt Generator — visual rule builder Meta Tags Generator — HTML + Open Graph + Twitter Cards OG Preview — see how links appear on social platforms Cron Par