Developer Tools for Modern Web 🚀
Free online tools like JSON Formatter, UUID Generator and more.
All Developer Tools
JSON Formatter & Validator
Free online JSON formatter, validator, tree viewer and beautifier tool.
JSON to TypeScript Converter - Generate Interfaces Online
Free online JSON to TypeScript converter. Instantly generate TypeScript interfaces and types from any JSON object or API response. No installation, 100% private, runs in your browser.
JSON to Java POJO Generator - Convert JSON to Java Classes Online
Free online JSON to Java POJO generator. Convert JSON into Java classes with nested classes, List arrays, Lombok and Jackson annotations, then download the code. 100% private, runs in your browser.
UUID Generator - Generate UUIDs Online
Free online UUID generator tool. Generate single or multiple UUIDs (v1, v4) instantly. Download as JSON or TXT. No installation needed.
XML Formatter & Validator - Online Tool
Free online XML formatter, validator, beautifier and minifier tool. Format, validate and minify XML data instantly.
HTML Formatter & Beautifier - Format HTML Online
Free online HTML formatter and beautifier tool. Instantly format, beautify, validate and minify HTML code. Perfect for web developers and designers.
CSS Formatter & Beautifier - Format CSS Online
Free online CSS formatter and beautifier tool. Instantly format, beautify, validate and minify CSS code. Perfect for web developers and designers.
JavaScript Formatter & Minifier - Format JS Online
Free online JavaScript formatter and minifier tool. Beautify, validate and minify JS code instantly in your browser.
JSON to CSV Converter - Convert JSON to CSV Online
Free online JSON to CSV converter. Convert JSON arrays to CSV, download, copy or preview CSV instantly.
Regex Tester - Test Regular Expressions Online
Free online Regex Tester. Test regular expressions with flags, view matches, groups, and perform replacements in your browser.
Base64 Encoder Decoder - Encode & Decode Online
Free online Base64 encoder and decoder tool. Encode text to Base64 or decode Base64 strings instantly. Perfect for developers and data encoding.
JWT Decoder - Decode JSON Web Tokens Online
Free online JWT decoder tool. Instantly decode and verify JWT tokens (JSON Web Tokens) with header, payload, and signature inspection. Perfect for developers and authentication debugging.
URL Encoder Decoder - Encode & Decode URLs Online
Free online URL encoder and decoder tool. Instantly encode URLs, query parameters, and special characters, or decode URL-encoded strings. Perfect for developers, SEO, and web development.
HTML Encoder Decoder - Encode & Decode HTML Online
Free online HTML encoder and decoder tool. Instantly encode HTML entities and special characters, or decode HTML-encoded strings. Perfect for web developers, bloggers, and content creators.
SQL Formatter & Beautifier - Format SQL Online
Free online SQL formatter and beautifier tool. Instantly format, beautify, validate, and minify SQL queries. Perfect for developers, database administrators, and SQL debugging.
Lorem Ipsum Generator - Placeholder Text Generator Online
Free online Lorem Ipsum generator. Create placeholder text by paragraphs, sentences, words or list items, with optional HTML tags. Copy or download instantly.
Password Generator - Create Strong Secure Passwords Online
Free online password generator. Create strong, random, secure passwords with custom length, uppercase, lowercase, numbers and symbols. 100% private, runs in your browser.
Password Strength Checker - Test Password Security Online
Free online password strength checker. Test how strong your password is, see entropy, estimated crack time, and get actionable tips to make it stronger. 100% private.
Hash Generator - MD5, SHA1, SHA256 Online
Free online hash generator. Generate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes from any text instantly. 100% private, runs entirely in your browser.
Unix Timestamp Converter - Epoch to Date Online
Free online Unix timestamp converter. Convert Unix epoch time to a human-readable date and back, in UTC and local time, with seconds and milliseconds support.
Regex Generator - Build Regular Expressions Online
Free online regex generator. Build regular expressions from common patterns like email, URL, phone, date and more, or from your own sample text. Copy ready-to-use regex.
Cron Expression Generator - Build Cron Schedules Online
Free online cron expression generator. Build cron schedules visually for minutes, hours, days, months and weekdays, with presets and a plain-English preview.
Cron Expression Reader - Explain Cron Syntax Online
Free online cron expression reader and explainer. Paste any cron expression to get a clear plain-English description of when it runs. 100% private, in your browser.
Color Picker - Pick Colors and Get HEX, RGB, HSL Online
Free online color picker. Pick any color and instantly get its HEX, RGB, HSL and CMYK values. Copy color codes with one click. 100% free, runs in your browser.
HEX to RGB Converter - Convert Hex Color Codes Online
Free online HEX to RGB converter. Convert hex color codes to RGB (and RGBA) values instantly, with a live color preview. Copy CSS-ready output. Runs in your browser.
RGB to HEX Converter - Convert RGB Color Values Online
Free online RGB to HEX converter. Convert RGB (and RGBA) color values to hexadecimal color codes instantly, with a live preview. Copy CSS-ready hex. In your browser.
CMYK Converter - Convert CMYK to RGB and HEX Online
Free online CMYK converter. Convert between CMYK, RGB and HEX color values instantly, with a live color preview. Perfect for print and web design. Runs in your browser.
YAML Formatter & Validator - Format YAML Online
Free online YAML formatter and validator. Fix indentation, keep your comments, and get invalid YAML flagged with the exact line number. Converts YAML to JSON and back.
Markdown Preview - Live Markdown Editor & Viewer Online
Free online Markdown preview and editor. Write Markdown and see the rendered HTML live, side by side. Supports headings, lists, code, links, tables and more. 100% private.
QR Code Generator - Create QR Codes Online Free
Free online QR code generator. Create QR codes for URLs, text, Wi-Fi, email and more, customise size, colors and error correction, and download as PNG or SVG. In your browser.
Barcode Generator - Create Barcodes Online Free
Free online barcode generator. Create CODE128, EAN-13, UPC, CODE39, ITF and more, customise size and labels, and download as PNG or SVG. 100% private, runs in your browser.
URL Parser - Parse and Analyze URLs Online
Free online URL parser. Break any URL into protocol, host, port, path, query parameters and fragment, and view decoded query strings in a table. 100% private, in your browser.
User Agent Parser - Detect Browser, OS & Device Online
Free online user agent parser. Paste any User-Agent string to detect the browser, version, operating system, rendering engine and device type. 100% private, in your browser.
IP Address Lookup - Validate & Analyze IP Addresses Online
Free online IP address tool. Validate IPv4 and IPv6, detect private, public, loopback and reserved ranges, and calculate CIDR subnet details. 100% private, no network calls.
EMI Calculator - Loan Monthly Payment & Amortisation
Free online EMI and loan calculator. Work out your monthly instalment, total interest, amortisation schedule and prepayment savings for car, personal and home loans.
Mortgage Calculator - Monthly Home Loan Payment Estimator
Free online mortgage calculator. Estimate your monthly home loan payment, down payment, total interest, LTV and full amortisation schedule including tax, insurance and service fees.
VAT Calculator - Add or Remove 15% Saudi VAT Online
Free online VAT calculator with Saudi Arabia's 15% rate built in. Add VAT to a net price or extract VAT from a VAT-inclusive total, with presets for the GCC, UK, EU and more.
Salary Calculator - Convert Hourly, Monthly & Annual Pay
Free online salary calculator. Convert hourly, daily, weekly, monthly and annual pay, add allowances, and subtract GOSI and other deductions to see your real take-home salary.
Income Tax Calculator - Estimate Tax by Country
Free online income tax calculator for India, the UK, the USA, Canada, Australia and the GCC. See your tax by bracket, effective rate, marginal rate and take-home pay, or enter custom brackets.
Currency Converter - Convert 45+ World Currencies
Free online currency converter for SAR, AED, USD, EUR, GBP, INR and 40 more. Convert instantly with built-in reference rates or pull live mid-market rates with one click.
Percentage Calculator - Six Percentage Tools in One
Free online percentage calculator. Work out X% of Y, what percent one number is of another, percentage increase and decrease, reverse percentages and percentage difference.
Discount Calculator - Sale Price, Savings & Percentage Off
Free online discount calculator. Find the sale price and how much you save from a percentage or amount off, stack a second coupon, add VAT, or work backwards to the discount percentage.
Profit Margin Calculator - Margin, Markup & Selling Price
Free online profit margin calculator. Find your gross margin and markup from cost and price, or work out the selling price you need for a target margin, with a margin-to-markup table.
Compound Interest Calculator - Growth With Contributions
Free online compound interest calculator. See future value, total interest and effective annual rate with any compounding frequency and regular monthly, quarterly or yearly contributions.
Investment Return Calculator - CAGR, SIP & Real Returns
Free online investment returns calculator. Project a lump sum or monthly investing plan, calculate CAGR and total return from actual values, and see results adjusted for inflation.
Retirement Calculator - Will Your Savings Be Enough?
Free online retirement calculator. Project your retirement pot, work out the pot you actually need for your target income, and see the extra monthly saving needed to close any gap.
Age Calculator - Find Your Exact Age in Years, Months & Days
Free online age calculator. Enter your date of birth to get your exact age in years, months and days, plus total days, weeks and hours lived, your next birthday and the day you were born.
Date Difference Calculator - Days Between Two Dates
Free online date difference calculator. Count days, working days, weeks, months and years between two dates, or add and subtract years, months, weeks and days from any date.
GPA Calculator - 4.0, 5.0 and 10-Point CGPA Scales
Free online GPA and CGPA calculator. Add courses with credit hours and grades on the 4.0, Saudi 5.0 or Indian 10-point scale, then combine with your previous record for a cumulative GPA.
Unit Converter - Length, Weight, Temperature & More
Free online unit converter for length, weight, temperature, area, volume, speed, time, digital storage, pressure, energy and angle. Convert one value into every unit at once.
BMI Calculator - Body Mass Index in Metric & Imperial
Free online BMI calculator. Get your body mass index, WHO weight category, healthy weight range for your height and BMI prime, in metric (cm/kg) or imperial (ft/lb) units.
BMR Calculator - Basal Metabolic Rate & Daily Calorie Burn
Free online BMR calculator using Mifflin-St Jeor, Harris-Benedict and Katch-McArdle. Find the calories you burn at rest, plus your TDEE at every activity level.
Calorie Calculator - Daily Calorie Needs & Macro Split
Free online calorie calculator. Find your maintenance calories and a daily target for losing or gaining weight, with a protein, carbohydrate and fat breakdown for your chosen split.
Merge PDF - Combine PDF Files Into One Online
Free online PDF merger. Combine two or more PDF files into a single document in the exact order you choose. No watermark, no sign-up, no software to install.
Split PDF - Extract Pages From a PDF Online
Free online PDF splitter. Extract single pages, custom page ranges like 1-3, 5, 8-, or fixed-size chunks from any PDF. Results download as a PDF or a ZIP archive.
Word to PDF Converter - Convert DOCX to PDF Online Free
Free online Word to PDF converter. Upload a .docx file and get back a PDF with headings, bold, italic and alignment preserved. No watermark, no sign-up, no software to install.
PDF to Word Converter - Convert PDF to Editable DOCX Online Free
Free online PDF to Word converter. Upload a PDF and get back an editable .docx file with its text and images extracted in reading order. No watermark, no sign-up, no software to install.
Java Formatter & Beautifier - Format Java Code Online
Free online Java formatter and beautifier. Fix indentation, spacing and brace placement in Java classes instantly. Comments, string literals and text blocks are preserved exactly.