Developer Utilities Hub
High-precision client-side tools engineered for backend engineers, frontend developers, and software architects. Zero telemetry, zero server latency, and 100% private.
SQL Schema & Migration Generator
Generate production relational SQL schemas with UUIDv7 primary keys, audit timestamps, and indexing.
Cron Expression Builder & Humanizer
Visually configure cron schedules, translate expressions into plain English, and calculate upcoming runs.
JWT Decoder & Claims Inspector
Decode JSON Web Tokens, inspect header algorithms, verify expiration dates, and parse claims safely in browser.
Crypto Hash & HMAC Generator
Compute MD5, SHA-1, SHA-256, SHA-384, SHA-512, and HMAC signatures instantly with pure browser WebCrypto.
Secure Password & Passphrase Generator
Generate high-entropy passwords and memorable EFF passphrases with real-time entropy calculation and strength rating.
Live Regex Tester & Explainer
Test regular expressions against sample strings in real-time with syntax highlighting, flag controls, and group breakdowns.
UUID & ULID Bulk Generator
Generate cryptographically secure UUIDv4, UUIDv7, and ULID identifiers with uppercase/lowercase toggles and 1-click batch copy.
JSON to TypeScript & Zod Converter
Convert raw JSON payloads into strongly typed TypeScript interfaces, type aliases, and runtime Zod validation schemas.
cURL to Fetch & Axios Converter
Convert cURL terminal commands into idiomatic JavaScript Fetch, Node.js Axios, Python Requests, and Go code.
Unix Timestamp & Epoch Converter
Convert between Unix Epoch seconds/milliseconds, ISO-8601 strings, UTC, and local time with live ticker.
URL Percent Encoder & Decoder
Percent-encode and decode query parameters, URIs, and inspect complex query string parameters in a clean table.
Code & Text Diff Checker
Compare two code snippets or text documents side-by-side with line-by-line visual additions, deletions, and stats.
Base64 Encoder & Decoder
Convert plain text, JSON, and file data to and from Base64 string formats with UTF-8 support.
JSON Formatter, Linter & Minifier
Format, validate, repair, and minify JSON payloads with detailed syntax error indicators and auto-repair.
HTML Entity Encoder & Decoder
Safely escape and unescape special HTML characters, XML symbols, and unicode entities to prevent XSS.
SVG to JSX & React Component
Transform raw SVG markup into clean, typed React/Next.js components, inline JSX, or Data URIs with live graphic preview.
Markdown Table Generator
Design markdown tables visually in an interactive spreadsheet grid. Export cleanly to Markdown, HTML, CSV, and JSON.
Tailwind CSS v4 Palette Generator
Pick any base HEX color and automatically generate a complete 50-950 Tailwind CSS color ramp with OKLCH values.
Color Converter & Contrast Analyzer
Convert colors between HEX, RGB, HSL, HSV, and OKLCH with real-time WCAG 2.1 accessibility contrast calculation.
Lorem Ipsum Placeholder Generator
Generate realistic placeholder paragraphs, sentences, words, and list items in plain text, HTML tags, or JSON arrays.
OpenGraph & SEO Meta Tag Generator
Preview and generate SEO meta tags, Twitter cards, and OpenGraph schemas for websites and blogs.
Client-Side Offline QR Generator
Create high-resolution QR codes for URLs, Wi-Fi, and text completely offline using pure client-side SVG rendering.
HTTP Status Code Reference
Searchable cheat-sheet of 1xx, 2xx, 3xx, 4xx, and 5xx HTTP response codes with API debugging tips.
Mock API Payload Generator
Generate realistic mock JSON datasets for users, e-commerce products, orders, and blog posts in one click.
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