Free Online Tools
Fast, free, and privacy-friendly tools that work right in your browser. No signup, no data collection.
ToolBox Online is a collection of free browser-based tools for developers, designers, and anyone who works with data. From JSON formatting and code beautification to unit conversion, data encoding, and random data generation — every tool runs entirely in your browser with zero server uploads. Your data stays private, always.
Whether you need to escape JSON strings for an API payload, convert IP addresses to hex, calculate geometric progressions, or generate UUIDs on the fly, our tools are designed to be fast, accurate, and completely free with no signup required.
Code Tools
Format, beautify, and transform code
JSON Escape
Escape special characters in your JSON strings online. Free, fast, and easy to use JSON escape tool. No signup required.
JSON Unescape
Unescape JSON strings online for free. Convert escaped characters back to their original form. Fast, secure, browser-based tool.
GraphQL Formatter
Format and beautify your GraphQL queries online for free. Properly indent and structure your GraphQL code with one click.
TOML Formatter
Format and beautify TOML configuration files online. Clean up messy TOML with proper indentation and structure.
Lua Beautifier
Beautify and format Lua code online for free. Auto-indent, clean up whitespace, and make your Lua scripts readable.
HTML to JSX
Convert HTML to JSX online for free. Automatically transforms class to className, style strings to objects, and fixes self-closing tags.
Converters
Convert between different formats
Text to CSV
Convert plain text to CSV format online for free. Split text by delimiter, lines, or custom separator into proper CSV files.
Pantone to Hex
Convert Pantone colors to Hex codes online for free. Look up any Pantone color and get its closest Hex equivalent instantly.
IP to Hex
Convert IP addresses to hexadecimal format online for free. Transform IPv4 addresses to their hex representation instantly.
Hex to IP
Convert hexadecimal values to IP addresses online for free. Transform hex strings back to standard IPv4 dotted notation.
Base64 Encode/Decode
Encode text to Base64 or decode Base64 to text instantly. Free online Base64 converter tool. No signup, no data sent to server.
JSON to YAML Converter
Convert JSON to YAML format online for free. Fast, accurate JSON to YAML converter with syntax validation. No signup required.
Calculators
Calculate and solve problems
Playback Speed Calculator
Calculate how long a video or audio will take at different playback speeds. Free playback speed calculator for 1.25x, 1.5x, 2x and custom speeds.
Geometric Progression Solver
Solve geometric progressions online. Calculate the nth term, sum, common ratio, and generate sequences. Free geometric sequence calculator.
Combination Sum Calculator
Find all combinations of numbers that add up to a target sum. Free online combination sum calculator with step-by-step results.
Generators
Generate random data and text
Random IP Generator
Generate random IP addresses online for free. Create random IPv4 addresses for testing, development, and educational purposes.
Palindrome Generator
Generate palindromes from any text online for free. Create words, phrases, and sentences that read the same forwards and backwards.
UUID Generator
Generate random UUIDs (v4) instantly. Free online UUID/GUID generator with bulk generation. No signup, no data sent to server.