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✨ Tool Lab - Free Online Tools

Tool Lab

Every Tool in One Place

Developer Utilities

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JSON Formatter

JSON prettify and error check

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SQL Formatter

SQL query prettify (PostgreSQL, etc.)

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Java Viewer

Format Java source code and debug object text

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JWT Debugger

Verify JSON Web Token payloads

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Base64 Encoder/Decoder

Text and image to Base64 conversion

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XML Formatter

Format, validate, and beautify XML

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XML

XML Validator

Validate XML well-formedness online. Detect unclosed tags, mismatched elements, and syntax errors instantly.

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HTML Formatter

Format, beautify, and minify HTML

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CSS Formatter

Format, beautify, and minify CSS

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CSS

CSS Validator

Validate CSS code and catch syntax errors online. Check for missing semicolons, unmatched braces, and more.

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YAML Formatter

Format and normalize YAML indentation

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JS

JavaScript Beautifier

Format, beautify, and minify JavaScript

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TS

TypeScript Beautifier

Format and beautify TypeScript code with configurable indentation.

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PHP

PHP Code Formatter

Format and beautify PHP code with consistent indentation. Free online PHP beautifier.

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PY

Python Formatter

Format Python code with PEP 8 style indentation. Free online Python beautifier.

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JSON Minifier

Minify and compress JSON

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.↓

CSS Minifier

Minify and compress CSS

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HTML Minifier

Remove unnecessary whitespace and comments from HTML to reduce file size.

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JS↓

JavaScript Minifier

Minify and compress JavaScript

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CSV Viewer

View, parse, and sort CSV data

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Diff Checker

Compare text and code differences

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Regex Tester

Test regular expression patterns in real time. Supports match highlighting, capture groups, replacement, and flags.

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⇄

JSON β†’ XML Converter

Convert JSON data into XML format.

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⇄

XML to JSON

Convert XML to JSON

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⇄

JSON β†’ YAML Converter

Convert JSON data to YAML format.

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⇄

YAML to JSON

Convert YAML to JSON

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⇄

CSV to JSON

Convert CSV to JSON

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⇄

CSV to XML Converter

Convert CSV data to XML format instantly online. Paste CSV with headers and get clean, well-formed XML output.

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⇄

XML to CSV

Convert XML records to a CSV spreadsheet. Child element names become column headers.

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⊞

CSV to HTML Table Converter

Convert CSV data to a styled HTML table instantly. Paste CSV and get ready-to-use HTML table markup.

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⇄

JSON to CSV

Convert JSON to CSV

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J→T

JSON β†’ TypeScript Converter

Automatically convert JSON data to TypeScript interfaces.

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⊞

JSON to Table

Convert a JSON array of objects to an HTML table. Each key becomes a column header.

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#↓

Number Base Converter

Convert binary, octal, decimal, hex

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⊞

HTML Table Generator

Build HTML tables with a visual editor and copy the code instantly.

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Meta Tag Generator

Generate HTML meta tags for SEO

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OG Tag Generator

Generate Open Graph and Twitter tags

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Unix Timestamp

Convert Unix timestamps to human-readable dates and vice versa.

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Date Calculator

Calculate the difference between two dates in days, weeks, and months.

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Age Calculator

Calculate exact age in years, months, and days from a birthdate.

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Percentage Calculator

Calculate percentages, percentage change, and reverse percentage.

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Unit Converter

Convert between units of length, weight, temperature, area, volume, and more.

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Tip Calculator

Calculate tip amount and split the bill between multiple people.

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BMI Calculator

Calculate your Body Mass Index and find your weight category.

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Mortgage Calculator

Calculate your monthly mortgage payment and amortization schedule.

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Loan EMI Calculator

Calculate EMI, total payment, and interest for any loan.

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Compound Interest Calculator

Calculate compound interest with optional regular contributions.

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Text ↔ Binary / Hex

Convert text to binary or hex encoding and back.

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Binary to Text Converter

Decode binary (space-separated 8-bit groups) to text, or encode text to binary.

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XIV

Roman Numeral Converter

Convert between Arabic numbers and Roman numerals in both directions (1–3999).

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Morse Code Encoder / Decoder

Encode and decode Morse code. Supports letters, digits, and punctuation.

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⏰

Cron Parser

Parse and explain cron expressions. See the next scheduled run times in human-readable format.

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URL Parser

Inspect and decompose URLs into protocol, hostname, path, query parameters, and fragment.

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U+

Unicode Converter

Inspect Unicode code points, UTF-8 byte sequences, and character categories for any text.

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Aa

Text to ASCII Code

Convert text to ASCII/Unicode code points in decimal, hex, octal, and binary.

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0x

Hex Encoder / Decoder

Encode text to hexadecimal or decode hex strings back to text. UTF-8 supported.

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B32

Base32 Encoder / Decoder

Encode text to Base32 (RFC 4648) or decode Base32 strings back to text.

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URI Component Encoder

Percent-encode or decode URI components and full URLs online.

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@

Email Extractor

Extract all email addresses from any text with deduplication and output format options.

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URL Extractor

Extract all HTTP and HTTPS URLs from text or HTML with deduplication and separator options.

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String Escape / Unescape

Escape or unescape strings for JSON, JavaScript, HTML entities, SQL, and regular expressions.

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0x

Text to Hex

Convert plain text to hexadecimal byte values.

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Hx

Hex to Text

Decode hexadecimal bytes back to plain text.

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⊞

HTML Form Generator

Build HTML forms visually and copy the generated code instantly.

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HTML Character Codes

Search and copy HTML special characters, symbols, and entity codes.

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HTML Tags Reference

Browse all HTML5 tags with descriptions and usage examples.

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HTML Viewer

Write or paste HTML and see it rendered instantly in the browser.

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robots.txt Generator

Visually build a robots.txt file to control which pages search engine crawlers can access on your site.

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XML Sitemap Generator

Build an XML sitemap for Google and Bing submission.

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JSON-LD Schema Generator

Generate Schema.org JSON-LD structured data markup for SEO rich results.

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Google Snippet Preview

Preview your page title and meta description in Google search results.

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🐦

Twitter Card Preview

Preview Twitter Cards and generate meta tags for social sharing.

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🌍

Timezone Converter

Convert time across 37 world timezones with live UTC clock.

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⏱

Duration Calculator

Calculate the exact time between two dates in days, hours, minutes, and seconds.

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Day of Week Calculator

Find what day of the week any date falls on.

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ISO Week Number Calculator

Find the ISO 8601 week number for any date, or look up week date ranges.

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Date Format Converter

Convert dates to ISO 8601, US, EU, RFC 2822, Unix timestamp, and custom formats.

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Business Days Calculator

Count business days between dates or add working days to a start date.

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⏰

Cron Next Run Calculator

Parse cron expressions and preview the next scheduled run times.

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🎲

Random Number Generator

Generate random integers or decimals in any range with bulk mode.

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Average Calculator

Calculate mean, median, mode, standard deviation, and variance from a list of numbers.

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LCM & GCD Calculator

Find the Least Common Multiple (LCM) and Greatest Common Divisor (GCD) of two integers, with step-by-step Euclidean algorithm.

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Geometry Calculator

Calculate area and perimeter for 8 geometric shapes.

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Triangle Calculator

Solve any triangle given SSS, SAS, ASA, or AAS.

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Scientific Calculator

Full-featured scientific calculator with trig, log, powers, and memory.

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πŸ“ˆ

ROI Calculator

Calculate return on investment (ROI), annualized return (CAGR), and net profit.

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🏷

Discount Calculator

Calculate sale prices, savings, or reverse-find the discount percentage.

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πŸ’Ή

Inflation Calculator

Calculate purchasing power over time using compound inflation rates.

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πŸ’°

Salary Calculator

Convert between annual, hourly, monthly, and weekly pay and see all pay periods at a glance.

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🧾

Income Tax Estimator

Estimate US federal income tax using 2024 tax brackets.

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πŸ’Ύ

Data Storage Converter

Convert between bits, bytes, KB, MB, GB, TB, PB and binary KiB/MiB/GiB equivalents.

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Speed Converter

Convert between m/s, km/h, mph, ft/s, knots, and Mach.

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Area Converter

Convert between square meters, kmΒ², hectares, acres, and square feet.

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Volume Converter

Convert between liters, gallons, cups, fl oz, and cubic meters.

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⚑

Energy Converter

Convert between joules, kWh, BTU, calories, and more.

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🌐

HTTP Status Codes

Browse all HTTP status codes by category with descriptions.

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πŸ”Ž

User Agent Parser

Parse User-Agent strings to identify browser, OS, and device type.

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URL Validator & Parser

Validate and parse any URL into protocol, hostname, path, and query parameters.

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πŸ”‘

Keyword Density Checker

Analyze keyword frequency and density in text.

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πŸ“‹

ASCII Character Table

Complete ASCII table with decimal, hex, octal, and binary values.

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🌿

Git Commands Cheat Sheet

Comprehensive Git command reference organized by workflow.

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🐧

Linux Commands Reference

Quick reference for essential Linux/Unix commands: file management, text processing, processes, networking, and more.

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MD

Markdown Syntax Reference

Complete Markdown syntax cheat sheet with live preview.

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πŸ—„

SQL Cheat Sheet

Complete SQL reference: SELECT, JOINs, aggregation, subqueries, and functions.

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πŸ”„

Canonical Tag Generator

Generate canonical link tags and HTTP headers to prevent duplicate content.

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🌑

Temperature Converter

Convert between Celsius, Fahrenheit, Kelvin, Rankine, and RΓ©aumur.

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Length Converter

Convert between metric and imperial length units β€” meters, feet, miles, and more.

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Weight & Mass Converter

Convert between milligrams, grams, kilograms, ounces, pounds, stones, and tons.

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⏱

Time Unit Converter

Convert between nanoseconds, milliseconds, seconds, minutes, hours, days, and years.

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πŸ“

Angle Converter

Convert between degrees, radians, gradians, arcminutes, arcseconds, and turns.

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🌑

Pressure Converter

Convert between pascals, bars, atmospheres, PSI, torr, mmHg, and more.

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β›½

Fuel Efficiency Converter

Convert between MPG (US/UK), km/L, L/100km, and other fuel economy units.

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πŸ“Š

Statistics Calculator

Calculate mean, median, mode, standard deviation, variance, and quartiles.

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πŸ”’

Fibonacci Generator

Generate Fibonacci numbers with arbitrary precision up to F(200).

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Prime Number Checker

Check if a number is prime, find prime factorization, or list primes in a range.

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Factorial & Combinatorics

Calculate factorials, permutations P(n,r), and combinations C(n,r).

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🎲

Probability Calculator

Calculate basic probability, binomial distributions, and dice roll probabilities.

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⊑

Iframe Generator

Generate HTML iframe embed code with custom dimensions and sandbox attributes.

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Cookie Policy Generator

Generate a customizable cookie policy with GDPR/CCPA compliance options.

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🌐

HTTP Headers Reference

Complete reference for HTTP request and response headers.

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Regex Reference

A quick reference guide for regular expression syntax β€” character classes, anchors, quantifiers, groups, flags, and common patterns.

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CSS Properties Reference

Comprehensive CSS property reference β€” flexbox, grid, typography, animation, and more.

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JSON Validator

Validate JSON format and analyze its structure.

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⊞

Markdown Table Generator

Build tables visually and export them as formatted Markdown syntax.

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#

Number Formatter

Format numbers in different locales, currencies, scientific notation, and more.

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βœ“

SEO Checklist

A comprehensive on-page, technical, content, and social SEO checklist.

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Currency Converter

Convert between 29 major currencies using static reference rates.

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JSONPath Tester

Test JSONPath expressions against JSON data and see matching results.

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Variable Name Generator

Convert any phrase into camelCase, snake_case, PascalCase, kebab-case, and more.

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JSON to GraphQL Types

Convert a JSON object into GraphQL type definitions automatically.

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Content & Writing

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Word Counter

Real-time character and word count

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πŸ”‘

Case Converter

Bulk uppercase/lowercase/title conversion

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✍️

Markdown Editor

Markdown writing and live preview

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ΒΆ

Lorem Ipsum Generator

Generate placeholder text

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↓H

Markdown to HTML

Convert Markdown to HTML with live preview.

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H↓

HTML to Markdown Converter

Convert HTML into clean Markdown syntax instantly.

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T

HTML to Plain Text Converter

Strip HTML tags and extract readable plain text from any HTML.

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β‡…

Text Line Sorter

Sort, reverse, or shuffle lines of text alphabetically, numerically, or by length.

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βŠ–

Duplicate Line Remover

Remove duplicate lines from text with case-insensitive matching and keep-first/last options.

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⏱

Reading Time Calculator

Calculate estimated reading and speaking time for any text based on your reading speed.

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πŸ”—

URL Slug Generator

Convert any text into a clean, SEO-friendly URL slug with configurable separator and options.

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Fq

Character Frequency Analyzer

Count how often each character appears in text with filtering, sorting, and bar chart display.

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⇄

Find & Replace Tool

Search and replace text with plain strings or regular expressions. Supports capture groups and whole-word mode.

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↩

Text Reverser

Reverse text by characters, words, or line order. Supports Unicode and emoji.

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#

Line Numberer

Add sequential line numbers to text or remove existing line numbers.

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⎡

Whitespace Remover

Remove extra spaces, tabs, and blank lines from text with combinable cleanup operations.

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1β†’w

Number to Words

Convert any number to its English word representation, including decimals and negatives.

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πŸ“–

Readability Score Analyzer

Analyze text readability using multiple formulas including Flesch Reading Ease, Flesch-Kincaid Grade Level, and Gunning Fog Index.

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↔

Palindrome Checker

Check if text reads the same forwards and backwards.

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⇄

Anagram Checker

Check if two words or phrases are anagrams of each other.

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↡

Text Wrapper

Wrap text to a fixed column width using word wrap or hard wrap modes.

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β‡…

List Sorter

Sort a line-by-line list alphabetically, by length, numerically, randomly, or in reverse.

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⌨

Typing Speed Test

Measure your typing speed in words per minute (WPM) and accuracy.

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≑

Table of Contents Generator

Automatically extract headings from Markdown and generate a linked TOC.

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Text Statistics

Detailed text analysis β€” character counts, word stats, sentence analysis, and more.

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Image & Design

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Image Optimizer

High-compression WebP conversion

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⭐

Favicon Generator

Generate ico/png sets from one image

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🎨

SVG to PNG Converter

Vector SVG to standard image conversion

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🎨

Color Converter

Convert HEX, RGB, HSL, CMYK colors

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πŸ’§

Color Picker

Pick colors and get HEX, RGB, HSL

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🌈

CSS Gradient Generator

Create CSS gradients with preview

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Box Shadow Generator

Generate CSS box shadows

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⬛

Border Radius Generator

Generate CSS border-radius

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Image Resizer

Resize images to custom dimensions and save as PNG, JPEG, or WebP.

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🎨

Color Palette Generator

Generate harmonious color palettes based on color theory.

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πŸ“Ž

Image to Base64

Convert images to Base64 encoded strings or Data URI format for embedding in HTML/CSS.

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Base64 to Image

Decode a Base64 Data URI to a viewable image. Preview and download as a file.

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β—‘

Color Contrast Checker

Check foreground/background color contrast ratio against WCAG 2.1 accessibility guidelines. Instant AA/AAA results.

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🎨

Tint & Shade Generator

Generate tints (lighter) and shades (darker) from any base color. Build a complete color scale for your design system.

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Color Mixer

Mix two colors and explore the full gradient between them. Adjust ratio to get the exact blend you need.

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🌈

Color Scheme Generator

Generate harmonious color palettes using color theory: complementary, analogous, triadic, tetradic, and more.

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🎨

CSS Named Colors

Browse all 148 CSS named colors with hex codes. Filter by group, search, and click to copy the color name.

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✏️

CSS Text Shadow Generator

Visually design CSS text-shadow effects with multiple layers. Adjust offset, blur, color, opacity. Copy the CSS instantly.

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HEX to RGBA

Convert HEX colors to RGBA with alpha transparency.

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⊟

Flexbox Generator

Visually build CSS Flexbox layouts.

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⊞

CSS Grid Generator

Build CSS Grid layouts visually.

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β–Ά

CSS Animation Generator

Build CSS keyframe animations with live preview.

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↔

CSS Transition Generator

Configure CSS transitions with hover preview.

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🎞

CSS Filter Generator

Apply CSS filters with live preview.

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βœ‚

CSS Clip-Path Generator

Generate CSS clip-path shapes visually.

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🎨

HTML Color Names

Browse all HTML/CSS named colors and their HEX values.

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πŸ–Ό

Placeholder Image Generator

Generate placeholder images with custom size, color, and label.

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β—ˆ

SVG Viewer & Editor

Paste SVG code and preview it instantly with zoom controls.

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↓J

PNG to JPG Converter

Convert PNG images to JPG with adjustable quality.

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↓P

JPG to PNG Converter

Convert JPG images to lossless PNG format in your browser.

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WP

WebP Converter

Convert images to WebP, PNG, or JPG with quality control.

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Color Blindness Simulator

Simulate how colors appear to people with protanopia, deuteranopia, and tritanopia.

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Ff

Font Pairing Guide

Explore curated Google Fonts pairings with live previews.

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🎨

Color Palette Generator

Generate a complete 10-shade color palette from any base color in Tailwind CSS style.

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Security & Web

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Password Generator

Generate strong secure passwords

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πŸ“±

QR Code Generator

Instantly convert text or URLs to QR codes

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πŸ”

Hash Generator

Generate MD5, SHA-256 cryptographic hashes

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🌐

URL Encoder/Decoder

Encode and decode special URL characters

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πŸ”£

HTML Entity Converter

Convert special characters to HTML entities

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πŸ†”

UUID Generator

Universally Unique Identifier (v4) generator

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πŸ”„

ROT13 / Caesar Cipher

Encode and decode text using ROT13 and Caesar cipher substitution.

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πŸ”‘

JWT Generator

Generate signed JSON Web Tokens using HMAC algorithms.

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πŸ”

Password Strength Checker

Analyze password strength with entropy calculation and security rule checks.

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🎲

Random Token Generator

Generate cryptographically secure random tokens in hex, Base64, or alphanumeric format.

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πŸ—

Secret Key Generator

Generate AES, HMAC-SHA, and JWT secret keys using the browser crypto API.

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Hβˆ‘

HMAC Generator

Compute HMAC-SHA256, SHA-384, SHA-512, or SHA-1 message authentication codes online.

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πŸ”’

AES Encryptor / Decryptor

Encrypt and decrypt text using AES-256-GCM with PBKDF2 key derivation in your browser.

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πŸ”‘

TOTP / OTP Generator

Generate time-based one-time passwords from a Base32 secret. Compatible with Google Authenticator and Authy.

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M5

MD5 Hash Checker

Generate and verify MD5 checksums from text.

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πŸ”

Password Policy Checker

Test a password against customizable security rules.

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