Developer Tools
Format JSON, decode JWTs, generate UUIDs, test regex, convert between data formats, and build cron expressions. Every tool runs in your browser; no credentials or sensitive data leave your machine.
.gitignore Generator
Generate a .gitignore file by selecting technology presets — Node, Python, macOS, Windows, VS Code, and more. Deduplicates entries. Copy or download instantly.
README Generator
Generate a professional README.md from a simple form — project name, description, features, installation, and licence. Copy the Markdown instantly. No account, no upload.
Random Number Generator
Generate cryptographically secure random integers or decimals. Set range, count, and unique-only — all in your browser.
Username Generator
Generate creative, memorable usernames from adjective-noun combinations. Choose your style, separator, and count. Runs in your browser — no account, no tracking.
JSON Formatter
Format and validate JSON in your browser. Instantly pretty-print with 2 or 4 space indent.
JWT Decoder
Decode and inspect JSON Web Token header and payload in your browser. No signature data leaves your device.
Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to text. Runs entirely in your browser.
URL Encoder / Decoder
Encode special characters for URLs or decode percent-encoded strings. Instant, private.
HTML Entity Encoder / Decoder
Encode special characters to HTML entities or decode entities back to text — instantly, in your browser.
UUID Generator
Generate cryptographically secure v4 UUIDs in your browser. Bulk generate up to 25 at once.
Password Generator
Generate strong, random passwords in your browser. Customise length and character sets.
Color Converter
Convert colors between HEX, RGB, and HSL. Instant, private, runs in your browser.
Hash Generator
Generate SHA-256, SHA-512, SHA-1, and SHA-384 hashes from text. Runs in your browser.
CSV to JSON
Convert CSV (or Excel/Sheets exports) to a JSON array of objects. Handles quoted fields. Free, private.
JSON to CSV
Convert a JSON array of objects to CSV (Excel/Sheets ready). Handles nested values and quoting. Free, private.
YAML ↔ JSON Converter
Convert YAML to JSON or JSON to YAML instantly in your browser. Supports nested structures, arrays, and custom indentation.
XML Formatter & Minifier
Format and pretty-print XML with custom indentation, or minify it to a single line — all in your browser.
Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal. Free, private, instant.
Regex Tester
Test regular expressions against text. See all matches highlighted with position. Runs in your browser.
Crontab Generator
Build and explain cron expressions field by field. Presets, live preview, plain-English description. Free, private.
QR Code Generator
Generate a QR code from any text or URL and download it as PNG. Free, private, runs in your browser.
CSS Grid Generator
Build CSS Grid layouts visually — set columns, rows, gaps, and units, then copy the generated CSS. Runs in your browser, no account required.
CSS Flexbox Generator
Build CSS Flexbox layouts visually — toggle direction, wrap, justify-content, and alignment, then copy the generated CSS. Runs in your browser, no account required.
Fake Data Generator
Generate rows of realistic test data — names, emails, addresses, UUIDs, and more. Export as CSV. Runs in your browser via @faker-js/faker, nothing is uploaded.
Domain Name Generator
Generate domain name ideas from your keywords across popular TLDs. Free, instant, private — runs in your browser.