All Tools

JSON Formatter & Beautifier

Format and validate JSON with syntax highlighting online

JSON Validator

Check if your JSON is valid with detailed error messages

JSON Minifier & Compressor

Remove whitespace from JSON to reduce its file size

JSON Key Sorter

Sort JSON object keys alphabetically in ascending or descending order

JSON Stringify Online

Stringify JSON to an escaped string and parse it back

JSON Diff & Compare

Compare two JSON objects and highlight differences

JSONPath Query Tool

Query and extract data from JSON using JSONPath expressions

JSON Schema Generator

Generate JSON Schema from JSON data

Random JSON Generator

Generate random JSON test data and mock responses

JSONL / JSON Lines Validator

Validate JSON Lines (JSONL) files line by line

JSON Error Fixer

Auto-fix common JSON syntax errors

JSON ↔ YAML Converter

Convert between JSON and YAML formats instantly online

JSON ↔ XML Converter

Convert between JSON and XML formats instantly online

JSON ↔ CSV Converter

Convert between JSON arrays and CSV files online

JSON ↔ TOML Converter

Convert between JSON and TOML formats instantly online

YAML ↔ XML Converter

Convert between YAML and XML formats

CSV ↔ XML Converter

Convert between CSV and XML formats

CSV ↔ YAML Converter

Convert between CSV and YAML formats

JSON to SQL INSERT Generator

Generate SQL INSERT statements from JSON data

JSON ↔ TSV Converter

Convert between JSON and TSV formats

RSS to JSON Converter

Convert RSS/Atom XML feeds to JSON

XML to CSV Converter

Convert XML data to CSV table format

JSON to Excel Converter

Convert JSON arrays to downloadable Excel files

JSON to TypeScript

Generate TypeScript interfaces from JSON

JSON to Go Struct

Generate Go structs from JSON

JSON to Python

Generate Python dataclasses from JSON

JSON to Rust Structs

Generate Rust structs with Serde from JSON

JSON to Java Class

Generate Java POJOs from JSON

JSON to Kotlin Data Class

Generate Kotlin data classes from JSON

JSON to Swift Struct

Generate Swift Codable structs from JSON

JSON to C# Class

Generate C# classes from JSON data

JSON to Dart Class

Generate Dart/Flutter model classes from JSON

JSON to Ruby Class

Generate Ruby classes from JSON data

JSON to PHP Class

Generate PHP 8 classes from JSON data

JSON to Elm Type

Generate Elm types and decoders from JSON

JSON to Haskell Type

Generate Haskell data types from JSON

JSON to Objective-C

Generate Objective-C classes from JSON

JSON to C++ Struct

Generate C++ structs from JSON

JSON to React PropTypes

Generate React PropTypes from JSON

PHP Array to JSON

Convert PHP arrays to JSON format

Word Counter

Count words, characters, sentences and paragraphs

Case Converter

Convert text to camelCase, snake_case, PascalCase and more

Line Sorter

Sort, shuffle, reverse and deduplicate text lines

Text Reverser

Reverse text, words or lines instantly

Duplicate Line Remover

Remove duplicate lines from any text

Whitespace Remover & Trimmer

Remove extra spaces, trim lines and clean text

Text to HEX Converter

Convert between text and hexadecimal encoding

String Length Calculator

Calculate string length and byte size

Slug Generator

Convert text to URL-friendly slugs

Random Text Generator

Generate random words, sentences and paragraphs

URL Parser & Inspector

Break down URLs into their components

Query String to JSON

Convert URL query strings to JSON objects

HTML Formatter & Beautifier

Format and beautify HTML with proper indentation

HTML Minifier

Compress HTML to reduce page size

HTML Escape / Unescape

Escape and unescape HTML special characters

HTML Tag Stripper

Remove HTML tags and extract plain text

HTML Structure Validator

Check HTML for unclosed tags and structural errors

CSS Formatter & Beautifier

Format and beautify CSS with proper indentation

CSS Minifier

Compress CSS to reduce file size for production

CSS Units Converter

Convert between px, rem, em, vh, vw and more

CSS to SCSS Converter

Convert CSS to nested SCSS format

CSS to LESS Converter

Convert CSS to LESS with variable extraction

CSS Validator

Check CSS for syntax errors and unknown properties

JavaScript Formatter & Beautifier

Format and beautify JavaScript with Prettier

JavaScript Minifier

Compress JavaScript with Terser for production

TypeScript Formatter

Format TypeScript with Prettier online

XML Formatter & Beautifier

Format and beautify XML with proper indentation

XML Validator

Validate XML syntax and detect errors

XML Minifier & Compressor

Remove whitespace from XML to reduce file size

XPath Tester

Test XPath expressions against XML documents

SQL Formatter & Beautifier

Format SQL queries with proper indentation

SQL String Escape

Escape SQL strings to prevent injection

Base64 Encoder / Decoder

Encode and decode Base64 strings instantly in your browser

URL Encoder / Decoder

Encode and decode URL percent-encoding instantly online

HTML Entities Encoder / Decoder

Encode and decode HTML entities for safe HTML output

JSON Escape / Unescape

Escape and unescape special characters in JSON strings

Morse Code Converter

Convert text to Morse code and decode Morse back to text

Image to Base64 Converter

Convert images to Base64 data URLs

Base64 to Image Converter

Preview and download images from Base64 strings

Base32 Encoder / Decoder

Encode and decode Base32 strings

Base58 Encoder / Decoder

Encode and decode Base58 strings

XML Escape / Unescape

Escape and unescape XML special characters

Punycode Converter

Convert international domains to Punycode

SHA Hash Generator

Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes

MD5 Hash Generator

Generate and verify MD5 checksums and hashes online instantly

Bcrypt Hash Generator & Verifier

Generate and verify bcrypt password hashes securely online

HMAC Generator

Generate HMAC signatures with MD5, SHA-256 or SHA-512

SHA-3 / RIPEMD-160 Hash Generator

Generate SHA-3 and RIPEMD-160 hashes

MD4 Hash Generator

Generate MD4 hashes for legacy compatibility

UUID Generator

Generate random UUID v4 identifiers

Password Generator

Generate strong random passwords with custom rules

Lorem Ipsum Generator

Generate Lorem Ipsum placeholder text

QR Code Generator

Generate QR codes from text or URLs

Passphrase Generator

Generate memorable multi-word passphrases

Random String Generator

Generate secure random strings with custom charset

NanoID Generator

Generate compact URL-safe unique NanoIDs

PIN Generator

Generate secure random numeric PINs

Random Color Generator

Generate random colors and color palettes

Color Converter — HEX, RGB, HSL

Convert colors between HEX, RGB, HSL and OKLCH

WCAG Color Contrast Checker

Check WCAG AA/AAA color contrast ratios

Color Picker & Inspector

Pick colors and get HEX, RGB, HSL values

SVG Viewer & Preview

Preview and inspect SVG code with live rendering

JWT Decoder & Inspector

Decode and inspect JWT tokens with claims view

Secure Token Generator

Generate secure API keys and session tokens

Regex Tester & Debugger

Test regex patterns with live match highlighting

Unix Timestamp Converter

Convert Unix timestamps to dates and vice versa

Timezone Comparison Tool

Compare times across multiple timezones

Cron Expression Parser

Parse cron expressions and see next run times

Date Difference Calculator

Calculate days, months and years between two dates

Online Stopwatch

Stopwatch with lap recording in your browser

Countdown Timer

Set a countdown timer in your browser

Epoch Time Converter

Convert epoch time to readable dates

Text Diff & Compare

Compare two texts and highlight differences

HTML Diff & Compare

Compare two HTML documents side by side

CSS Diff & Compare

Compare two CSS stylesheets and highlight differences

XML Diff & Compare

Compare two XML documents and highlight differences

Markdown Editor with Live Preview

Markdown editor with live split-pane preview

Markdown to HTML Converter

Convert Markdown source to HTML output

HTML to Markdown Converter

Convert HTML content to clean Markdown syntax

CSV Viewer & Analyzer

View CSV files as a sortable, searchable table

Excel File Viewer

View Excel XLSX files in your browser

JSON File Viewer

Upload and view JSON files as a formatted tree

CSV Merge & Join Tool

Merge multiple CSV files by rows or column key

Stack Trace Formatter

Format and highlight stack traces for debugging

CSV Filter & Sort

Filter and sort CSV data by column values

HAR File Viewer & Analyzer

Analyze HAR files and inspect network requests

ASCII Table Reference

Complete ASCII character reference table

Text to ASCII Art Generator

Generate ASCII art text banners

Directory Tree Generator

Generate ASCII directory tree for README files

What is My IP Address

Find your public IP address and location

User Agent Inspector

Inspect and parse your browser user agent

Internet Speed Test

Test your download and upload internet speed

Timezone List & Reference

Browse and search all IANA timezones with current times

Percentage Calculator

Calculate percentages, increases and decreases

MRR Calculator

Calculate Monthly Recurring Revenue for SaaS

ROI Calculator

Calculate Return on Investment percentage

Burn Rate & Runway Calculator

Calculate startup burn rate and cash runway

LTV Calculator (Lifetime Value)

Calculate Customer Lifetime Value (LTV/CLV)

CAC Calculator

Calculate Customer Acquisition Cost

Churn Rate Calculator

Calculate customer and revenue churn rate

Conversion Rate Calculator

Calculate conversion rates and required traffic

Profit Margin Calculator

Calculate profit margins and markup percentages

AOV Calculator (Average Order Value)

Calculate and optimize Average Order Value

Statistics Calculator

Calculate mean, median, mode and standard deviation

ROAS Calculator

Calculate Return on Ad Spend (ROAS)

CTR Calculator

Calculate Click-Through Rate from clicks and impressions

Big Number Calculator

Arithmetic with numbers beyond JavaScript limits

CPC Calculator

Calculate Cost Per Click for ad campaigns

YAML Validator

Validate YAML syntax and detect errors

YAML Formatter & Beautifier

Format and validate YAML with proper indentation

TOML Validator

Validate TOML syntax and detect errors

GraphQL Formatter

Format GraphQL queries and schemas with Prettier

JavaScript Playground

Run and test JavaScript code in your browser

Mermaid Diagram Editor

Create flowcharts and diagrams with Mermaid

SQL Playground

Run SQL queries in your browser with DuckDB WASM

GraphQL Playground

Test GraphQL queries against any endpoint

jq Playground

Run jq queries on JSON data in your browser

Python Playground

Run Python 3 code in your browser with Pyodide