Developer Tools (24)
Everyday utilities for software engineers — formatting, debugging, converting and inspecting. Everything runs client-side in your browser, so your code and tokens never leave your machine.
JSON Formatter
Prettify, minify, and validate JSON data strings instantly.
SQL Editor & Checker
Format SQL and lint for missing WHERE, unmatched quotes, and common mistakes.
JWT Debugger
Decode and inspect JSON Web Token headers and payloads.
JSON Diff
Compare two JSON objects and highlight added, removed, and changed keys.
CSS Minifier
Minify CSS by stripping whitespace, comments, and redundant characters.
Meta Tag Generator
Generate SEO meta, Open Graph, and Twitter Card tags for any page.
String Escape
Escape and unescape strings for JS, JSON, and other quoted contexts.
HTTP Status Codes
Searchable reference for common HTTP status codes and their meanings.
Regex Cheatsheet
Searchable reference for regex tokens, quantifiers, groups, lookarounds, and flags.
IP Subnet Calculator
Compute network, broadcast, host range, and usable IPs from any IPv4 CIDR.
JSON Path Query
Query JSON with dot and bracket notation and see the resolved value instantly.
UTM Link Builder
Build campaign-tracked URLs with utm_source, medium, campaign, term, and content parameters.
JSON to TypeScript
Turn any JSON payload into TypeScript interfaces with nested type inference.
SQL Query Explainer
Paste any SQL query and get a plain-English explanation of every clause: SELECT, JOIN, WHERE, GROUP BY, HAVING, and more.
cURL to Fetch / Axios
Convert any cURL command into ready-to-run fetch, axios, or Node.js request code.
.env ↔ JSON
Convert .env files to JSON and back — handy for config, CI secrets, and deploy dashboards.
.gitignore Generator
Build a .gitignore from stack presets: Node, Python, Go, Rust, Docker, Terraform, editors, and OS files.
URL Inspector & Query Editor
Break any URL into protocol, host, path, hash, and editable query parameters.
Markdown Table Generator
Turn CSV, TSV, or pipe-separated rows into a clean aligned Markdown table for READMEs and docs.
Cron Editor & Next Runs
Build, explain, and validate crontab expressions and preview the next 8 local run times.
Semver Range Checker
Test which versions satisfy a semver range like ^1.2.0 and sort versions correctly.
HTML to JSX Converter
Convert HTML to valid JSX: className, htmlFor, style objects, comments and void tags.
Chmod Permission Calculator
Convert between octal, symbolic and checkbox file permissions with a ready chmod command.
Git Command Cheatsheet
Searchable reference of everyday Git commands for branching, undoing and inspecting history.