Developer Tools
That Just Work
Fast, free, and privacy-friendly. No sign-ups, no server calls. Everything runs in your browser.
Get StartedFormatters & Validators
8Format, validate, and inspect structured data
JSON Formatter
Format, validate, minify, and inspect JSON with syntax highlighting and a tree view.
SQL Formatter
Beautify, minify, and syntax-highlight SQL queries. Supports multiple dialects.
Regex Tester
Test regular expressions in real-time with match highlighting, capture groups, and a common patterns library.
JWT Decoder
Decode and inspect JSON Web Tokens. View header, payload, signature, and expiry status.
Cron Expression Parser
Parse and build cron expressions visually. See next run times, plain English description, and cheat sheet.
JSON Path Evaluator
Evaluate JSONPath expressions with live results, tree view, autocomplete, and filter support.
Data Format Viewer
Paste JSON, XML, YAML, CSV, or .env — auto-detect format, view as tree, convert between formats.
JSON Validator
Validate JSON syntax online. Check for errors with line numbers, format, minify, and explore with tree view.
Generators
9Generate IDs, passwords, keys, and test data
UUID Generator
Generate UUIDs in all versions — v1, v3, v4, v5, v7, and Nil. Bulk generate with formatting options.
Password Generator
Passwords, passphrases, PINs, RSA/EC/Ed25519 key pairs, salts, SHA hashes, and API secrets.
QR Code Generator
Generate QR codes for URLs, text, WiFi, email, phone, and vCards. Customize colors and download as PNG/SVG.
Lorem Ipsum Generator
Generate placeholder text in multiple styles: classic, hipster, tech, and business. Export as plain text, HTML, or Markdown.
Test Data Generator
Generate realistic fake data for testing: names, emails, addresses, phone numbers, and more.
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512 hashes. File hashing, HMAC, and checksum verification.
JWT Builder
Create and sign JSON Web Tokens with HMAC-SHA256/384/512. Set claims, expiry, and verify signatures.
MD5 Hash Generator
Generate MD5 hashes from text or files instantly. Includes HMAC support and checksum verification.
SHA-256 Hash Generator
Generate SHA-256 hashes from text or files. Includes file hashing, HMAC generation, and checksum verification.
Converters
13Convert between formats, encodings, and units
Timestamp Converter
Convert Unix timestamps to dates across all timezones with multiple output formats.
Base64 Encoder & Decoder
Encode and decode Base64 strings online. Supports text and UTF-8 encoding.
URL Encoder & Decoder
Encode and decode URLs, parse query strings, and build URLs with a visual parameter editor.
Color Converter
Convert between HEX, RGB, HSL with contrast checker, palette generator, and Tailwind CSS matching.
YAML / JSON Converter
Convert between YAML and JSON with validation, sorting, and presets for Docker, Kubernetes, and GitHub Actions.
Markdown to HTML
Convert Markdown to HTML and back. Live preview with GitHub-flavored Markdown support.
JSON to TypeScript
Generate TypeScript interfaces, Zod schemas, or JSON Schema from any JSON. Smart type inference with optional fields.
Number Base Converter
Convert between binary, octal, decimal, and hex. Bit visualization, two's complement, and bitwise operations.
CSV to JSON Converter
Convert CSV to JSON and JSON to CSV instantly. Handles headers, custom delimiters, and large datasets.
Image to Base64
Convert images to Base64 data URIs. Drag & drop, batch upload, resize, and reverse Base64 to image.
Curl to Code
Convert curl commands to Python, JavaScript, Go, Java, PHP, Rust, C#, and Ruby code.
String Escape / Unescape
Escape and unescape strings for JSON, HTML, XML, URL, SQL, regex, shell, Java, Python, and more.
Epoch Converter
Convert Unix epoch timestamps to human-readable dates and back. All timezones, multiple formats, live clock.
Diff & Compare
2Compare text, code, and data side-by-side
Web & SEO
6HTTP references, meta tags, and web utilities
HTTP Status Codes
Searchable reference for all HTTP status codes with explanations, common causes, and example responses.
HTML Entity Encoder
Encode and decode HTML entities. Searchable reference table with 80+ named, decimal, and hex entities.
Meta Tag Generator
Generate meta tags for SEO, Open Graph, and Twitter Cards with live Google, Facebook, and Twitter previews.
API Tester
Test REST APIs in your browser. Send GET, POST, PUT, DELETE requests with headers, auth, and body.
OG Preview / Debugger
Preview how your page appears on Google, Facebook, Twitter, Slack, Discord, LinkedIn, and WhatsApp.
URL Parser
Parse any URL into its components: protocol, hostname, path, query parameters, and fragment.
DevOps & Config
4Unix permissions, system tools, and configuration helpers
Chmod Calculator
Interactive Unix file permission calculator with visual grid, umask calculator, and common presets.
IP Subnet Calculator
Calculate subnet masks, network ranges, broadcast addresses, and divide subnets. IPv4 and IPv6 support.
Docker Run to Compose
Convert docker run commands to docker-compose.yml and back. Supports all common Docker flags.
Git Command Builder
Build complex git commands visually. 18 commands with all options, explanations, and danger warnings.
CSS & Design
4Visual CSS generators for gradients, shadows, and more
CSS Gradient Generator
Create beautiful CSS gradients visually. Linear, radial, and conic with color stops, presets, and Tailwind output.
Box Shadow Generator
Design CSS box shadows visually with multiple layers, presets, and live preview.
Favicon Generator
Generate favicons from images, text, or emoji. Download as PNG, ICO, or ZIP with all sizes.
Tailwind CSS Lookup
Look up any Tailwind class to see its CSS. Reverse lookup: paste CSS to find the Tailwind class.
Math & Calculators
1Percentage, tip, discount, and margin calculators
Text Utilities
6Count words, generate text, and transform content
Word & Character Counter
Count words, characters, sentences, and paragraphs. Readability score, keyword density, and case converters.
Case Converter
Convert text between camelCase, snake_case, kebab-case, PascalCase, UPPERCASE, and 15+ other formats.
Line Tools
Join, split, sort, dedupe, filter, number, and transform lines of text. Multi-line to one-line and back.
Slug Generator
Convert titles to URL-friendly slugs with transliteration, custom separators, and bulk mode.
Markdown Table Generator
Visual table editor that outputs Markdown, HTML, CSV, JSON, and ASCII tables. Import from CSV or Excel.
ASCII Art Generator
Convert text to ASCII art with 8 font styles. Copy as code comments for any language.
Reference
3Cheat sheets and lookup tables for developers
ASCII Table
Full ASCII character table with decimal, hex, octal, and binary values. Searchable with category filters.
HTML Color Names
All 140+ named CSS colors with swatches, hex, RGB values. Search, sort, and copy.
Regex Cheat Sheet
Searchable regex reference with patterns, examples, and language-specific notes for JS, Python, Go, and Java.
Why DevPrix?
DevPrix Dev Tools is a collection of free, fast, and privacy-focused utilities built for software developers. Every tool runs entirely in your browser — no data is sent to any server.
Format JSON, test regex, decode JWTs, convert timestamps, generate UUIDs, create passwords, and much more — all from one place.