Free Developer Web Tools
Use JSON formatting, Base64 conversion, URL encoding, and other developer tools directly in your browser.
No install · No signup · 100% free — 151 tools available right now.
What is Torinoa Tools?
Torinoa Tools was created to streamline the everyday tasks of engineers and web developers. Born from the frustration of needing to install software or sign up for accounts just to use a simple utility, it provides a free online developer toolkit with 151 tools ready to use instantly. It's designed for backend engineers, frontend engineers, infrastructure engineers, data engineers, students, and anyone who writes code.
Categories span JSON, YAML, XML, SQL, regex, text processing, encoding, generation, calculation, and web developer utilities. Whether you need to format an API response with JSON Formatter, validate a config file with YAML Validator, decode a JWT token during development, or generate test UUIDs and passwords — Torinoa Tools has you covered. Related tool links are built in so you can move seamlessly from one tool to the next without breaking your flow.
The key advantage is that everything works without installation or account registration — just open your browser and start working immediately. Compatible with Chrome, Safari, Firefox, Edge, and other modern browsers on desktop, smartphone, and tablet. Even on a shared office PC or a machine with a minimal setup, you can start working the moment you open the URL.
Most tools run entirely in JavaScript on the client side, which means your input data is never sent to any server. You can safely paste API keys, JWT tokens, passwords, SQL queries, and confidential data without worrying about privacy leaks. Privacy and security are core design principles.
Torinoa Tools will continue to grow — new tools are added regularly and existing tools are improved based on community feedback. We welcome suggestions for tools you'd like to see. Our goal is to build a platform that evolves alongside the developer community and makes daily development work more efficient.
Completely Free
All tools are free with no hidden charges
Data Stays in Your Browser
Client-side processing keeps your data private
No Installation Required
Open in a browser and use immediately
Mobile Ready
Works great on smartphones and tablets too
Where Torinoa Tools Helps
From web app development and API testing to frontend, backend, debugging, and data transformation — Torinoa Tools fits into every part of your development workflow. Instantly format JSON responses, generate test UUIDs, convert Base64 or URL-encoded strings, and validate YAML configs without ever leaving the browser.
Web App Development
JSON formatting, UUID generation, JWT decoding, and more
API Development & Testing
Format responses, encode URLs, look up HTTP status codes
Backend Development
SQL formatting, YAML editing, Base64 encoding, hash generation
Frontend Development
Regex testing, CSS gradients, QR code generation
Debugging & Research
JWT analysis, UserAgent lookup, MIME type search, diff tools
Data Conversion
JSON↔YAML, JSON↔XML, CSV formatting, Markdown conversion
Test Data Generation
UUIDv4, random strings, passwords, Lorem Ipsum
Text Processing
Character count, case conversion, duplicate removal, line sorting
Popular Tools
The most-used tools on Torinoa Tools.
JSON Formatter
Format, pretty-print, and validate JSON in your browser.
JSON Validator
Validate JSON syntax and pinpoint errors with clear location hints.
Base64 Encode / Decode
Encode text to Base64 or decode Base64 back to plain text.
UUID Generator
Generate UUID v4 values instantly.
URL Encode / Decode
Encode and decode URLs with percent encoding.
YAML Formatter
Format and validate YAML with consistent indentation and optional key sorting.
SQL Formatter
Format SQL queries for readability.
NEWRegex Tester
Test regular expressions and highlight matches in real time.
Categories
Encoding
Base64, URL encoding, HTML escaping, SHA256, and other encoding/conversion tools for security and data work.
6 tools →JSON
Tools for formatting, validating, and transforming JSON. Great for checking API responses and data conversion during development.
7 tools →Text
Character counting, case conversion, diff, and more. Supports full-width Japanese characters and Unicode.
18 tools →Generators
Generate UUIDs, random strings, passwords, and QR codes in seconds. Perfect for development and testing.
22 tools →Calculators
Date calculations, unit conversions, percentage math, loan calculators, and more practical utilities.
15 tools →Web
URL parsing, UserAgent analysis, HTTP status lookup, MIME type search, and other web development debugging tools.
13 tools →YAML
Format, validate, and diff YAML files. Especially useful when editing Kubernetes manifests or docker-compose configurations.
3 tools →TOML
Format, validate, and diff TOML configuration files.
2 tools →XML
Format, minify, and validate XML, plus convert between JSON and XML. Ideal for API integrations and data exchange.
5 tools →SQL
SQL formatting, minification, validation, and comment removal to streamline your SQL development workflow.
4 tools →Regex
Test, replace, explain, and escape regular expressions. Quickly verify pattern behavior without leaving the browser.
5 tools →Date & Time
Timestamp conversion, date calculation, time zones, and cron.
8 tools →Markdown
Preview and convert Markdown to HTML and more.
3 tools →CSV
Convert, format, and validate CSV data.
4 tools →HTML / CSS
Escape HTML, encode entities, and generate CSS.
5 tools →Diff
Compare text, JSON, and YAML side by side.
5 tools →Properties Files
Format, sort, and convert Java .properties files.
1 tools →JavaScript
Minify, format, and convert JavaScript files.
4 tools →Code Generation
Auto-generate type definitions, boilerplate, and more from data.
6 tools →Image
Resize, convert, compress, and Base64-encode images in your browser.
15 tools →Why Torinoa Tools?
100% Free
Every tool is permanently free. No ads, no paid tiers.
No Signup Required
No account creation or email required. Open a URL and start instantly.
Privacy First
Most tools process data entirely in your browser. Nothing is sent to our servers.
Mobile Friendly
Designed mobile-first for a great experience on smartphones and tablets.
Dark Mode Support
Toggle between light and dark themes. Follows your OS preference automatically.
English & Japanese
UI available in English and Japanese to accommodate international teams.
Fast Performance
Lightweight design ensures fast page loads and instant results with no server round-trips.
No Installation
No apps or extensions to install. Works on any device with a modern browser.
Frequently Asked Questions
Are all tools really free?
Yes, every tool on Torinoa Tools is completely free with no usage limits, no ads, and no paid plans.
Do I need to sign up or create an account?
No. Just open the URL and use the tool instantly — no email or registration required.
Is my input data sent to a server?
No. Most tools process everything in your browser via JavaScript. Your data never leaves your device, making it safe to use with API keys, passwords, and confidential content.
Can I use these tools on a smartphone?
Yes, all tools are designed mobile-first and work comfortably on smartphones and tablets.
Can I use Torinoa Tools for commercial work?
Yes, commercial and business use is fully permitted.
Is dark mode supported?
Yes. Use the theme toggle in the top-right corner to switch between light and dark mode. It also follows your OS preference automatically.