TNToolNest
30 free tools · zero data collection

Online tools that
just work.

Developer utilities, text processors, design helpers, and converters. Everything runs in your browser — instant, private, free.

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{ }JSON Formatter & Validator🔍Regex Tester✏️Word Counter🔐Password Generator🎨Color Converter📱QR Code Generator🍅Pomodoro Timer

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🎟️JWT Decoder🏷️Meta Tag Generator📊Diff Checker🗃️SQL Formatter🕐Cron Expression Parser🔗URL Slug Generator

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30 tools across 5 categories

⚙️Developer Tools(9)View all →
{ }
JSON Formatter & Validator
Format, beautify, and validate JSON data instantly.
🔍
Regex Tester
Test and debug regular expressions in real-time.
🎟️
JWT DecoderNew
Decode and inspect JSON Web Tokens.
🏷️
Meta Tag GeneratorNew
Generate SEO meta tags for your website.
📊
Diff CheckerNew
Compare two texts and find the differences.
🗃️
SQL FormatterNew
Format and beautify SQL queries instantly.
🕐
Cron Expression ParserNew
Parse and explain cron expressions in plain English.
🔗
URL Slug GeneratorNew
Convert any text to a URL-friendly slug.
🖼️
Placeholder Image GeneratorNew
Generate placeholder images for mockups.
✏️Text Tools(5)View all →
✏️
Word Counter
Count words, characters, sentences, and paragraphs.
🔤
Case Converter
Convert text between UPPER, lower, Title, and more.
📝
Lorem Ipsum Generator
Generate placeholder text for your designs.
📖
Markdown Preview
Write Markdown and see a live HTML preview.
✦
Special CharactersNew
Find and copy special characters and symbols.
🎨Design Tools(6)View all →
🎨
Color Converter
Convert between HEX, RGB, and HSL formats.
📱
QR Code Generator
Create QR codes for URLs, text, or contact info.
🌈
CSS Gradient Generator
Create beautiful CSS gradients visually.
🔲
Box Shadow Generator
Design CSS box shadows with a visual editor.
🖼️
Image to Base64
Convert images to Base64 encoded strings.
🍅
Pomodoro TimerNew
Stay focused with the Pomodoro technique.
🔐Security Tools(3)View all →
🔐
Password Generator
Generate strong, secure, random passwords.
🛡️
Hash Generator
Generate SHA-1, SHA-256, SHA-384, SHA-512 hashes.
🆔
UUID Generator
Generate unique UUIDs (v4) instantly.
🔄Converter Tools(7)View all →
🔁
Base64 Encoder & Decoder
Encode and decode Base64 strings instantly.
🔗
URL Encoder & Decoder
Encode and decode URLs and query parameters.
⏱️
Unix Timestamp Converter
Convert between Unix timestamps and human dates.
📋
JSON to CSV ConverterNew
Convert JSON arrays to CSV format.
🔢
Number Base ConverterNew
Convert between decimal, binary, hex, and octal.
🏗️
HTML Entity EncoderNew
Encode and decode HTML entities.
💻
Text to BinaryNew
Convert text to binary and binary to text.

From the Blog

Guides, tutorials, and tips for developers and designers.

developer

Best Free Online JSON Formatters in 2026

Compare the top JSON formatting tools and learn how to validate, beautify, and minify JSON data effectively.

2026-02-15·5 min read
security

How to Generate Truly Secure Passwords in 2026

Learn what makes a password secure, how password generators work, and best practices for managing credentials.

2026-02-14·7 min read
developer

Regular Expressions: A Complete Beginner's Guide

Master regex from zero to hero with practical examples, common patterns, and interactive testing tips.

2026-02-13·10 min read

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