Regex Tester
Type a regular expression and see matches, capture groups, and positions update live. Copy the full result or restore the example with Clear.
LaunchFree Online Tools
Discover a growing collection of free online tools and technology utilities designed to help you work faster and accomplish everyday tasks. Convert and compress files, edit images, generate useful content, format text and code, and access practical tools directly from your browser.
All Tools
Showing 67 toolsPercentage Calculator
Find what percentage one number is of another, take a percentage of a value, or measure the increase or decrease between two numbers. Results update as you type, with the formula shown under every answer.
LaunchJSON to CSV Converter
Convert JSON objects to CSV with selectable delimiters, header control, copy, and browser download.
LaunchAuto Loan Calculator
Estimate an auto loan's financed amount, monthly payment, total interest, and total cost from the vehicle and loan details.
LaunchARR Calculator
Estimate ARR from current MRR and optional new, expansion, churn, and contraction revenue adjustments.
LaunchCSV to JSON Converter
Upload a CSV file or paste its rows to create and download a JSON array of objects in your browser.
LaunchArea Calculator
Calculate rectangle, square, circle, or triangle area from dimensions and show the result in your selected unit.
LaunchArea Converter
Convert square millimeters, centimeters, meters, kilometers, inches, feet, yards, acres, and hectares between source and target units.
LaunchAPY Calculator
Enter a nominal interest rate and compounding schedule to calculate the effective annual yield.
LaunchHTML Element Extractor
Extract text, HTML and attribute values from any markup using CSS selectors, with copy, filter and export to TXT, CSV or JSON.
LaunchText Diff Checker
Compare two texts line by line, word by word, or character by character. Spot additions, removals, and changes with side-by-side views, merge tools, and shareable links.
LaunchWHOIS Lookup
Look up domain registration details: registrar, creation and expiry dates, nameservers, status codes, and abuse contacts. Check availability, copy or download the report.
LaunchResume / CV Builder
Create a complete resume in your browser with guided sections, live preview, templates, and one-click TXT, HTML, Word, and PDF export.
LaunchFancy Text/Font Generator
Type once and copy 65 stylish Unicode fonts - bold, script, fraktur, bubbles, small text, effects and decorated frames - for bios, names and captions.
LaunchLorem Ipsum Generator
Generate classic Lorem Ipsum placeholder text by paragraphs, sentences, words, characters, or list items - with HTML output, copy, and download.
LaunchImage Resizer
Resize JPG, PNG, WebP, AVIF, GIF, BMP, ICO, SVG, TIFF, PDF, and HEIC images in your browser - exact pixels, percentage, or social presets with quality control, live preview, progress overlay, and ZIP download.
LaunchURL Slug Generator
Turn a title or phrase into a clean URL slug with configurable separator, case, and character handling.
LaunchURL Parser
Inspect a complete URL in your browser, including its protocol, host, port, path, query parameters, and fragment.
LaunchURL Encoder & Decoder
Encode special characters in URLs and query strings into safe percent-encoded values, or decode percent-encoded text back into readable URLs. Choose a mode and copy the result.
LaunchBasic Calculator
Use a basic calculator for the four arithmetic operations, percentages, keyboard input, and a short calculation history.
LaunchBase64 Encoder & Decoder
Encode text to Base64 or decode Base64 and Base64URL strings directly in your browser. Choose a mode, convert, and copy the result.
LaunchDate Difference
Compare two date and time values to see the calendar components and total elapsed time between them.
LaunchRandom Number Generator
Generate integers or decimals in a selected range and copy the values for general use.
LaunchMarkdown Previewer
Write Markdown on the left and see the rendered preview update as you type. Copy the HTML output or download the Markdown source file.
LaunchDiscount Calculator
Work out the sale price and savings from a percentage or fixed amount off the original price.
LaunchCharacter Counter
Count characters, words, lines, and paragraphs as you type. Copy any single stat.
LaunchGoogle SERP Preview
See how your page title and meta description appear in Google search results before you publish. Enter a title, a URL, and an optional keyword to preview desktop and mobile snippets with character and pixel counters.
LaunchAverage Calculator
Calculate the arithmetic mean of a list of numbers, with the sum, median, mode, range, geometric mean, and variance included. Supports weighted averages and average time.
LaunchQR Code Generator
Generate scannable QR codes for URLs, text, WiFi, email, phone, SMS, and vCards with custom colors, a center logo, and PNG or SVG export, all in your browser.
LaunchImage Format Converter
Convert and resize JPG, PNG, WebP, AVIF, GIF, BMP, TIFF, ICO, PDF, SVG and HEIC in your browser - bulk 2-in-1 converter + resizer with per-image select, WASM AVIF, fullscreen progress and local processing.
LaunchUnix Timestamp Converter
Convert Unix timestamps to readable dates and back. Supports seconds, milliseconds, microseconds and nanoseconds with UTC, local and ISO output.
LaunchJWT Decoder
Decode JSON Web Token headers and payload claims locally so developers can inspect token contents without uploading them.
LaunchMD5 Hash Generator
Generate MD5 hashes from text or files in your browser, with hex and base64 output.
LaunchMarkdown to HTML
Convert Markdown to clean HTML in your browser, with live preview, code highlighting, tables, task lists, footnotes, and math. Copy or download the result.
Launch301 Redirect Generator
Build 301 redirects for Apache, Nginx, Netlify, Vercel, Cloudflare, Next.js, IIS and CSV. Paste bulk URLs, validate chains and duplicates, and copy ready rules.
LaunchDays Between Dates
Calculate the exact number of days between two calendar dates, with options for inclusive counting and business days only.
LaunchYAML Formatter & Validator
Format YAML with consistent indentation and validate common YAML syntax and structure errors.
LaunchHTML Formatter
Format, validate, and minify HTML in your browser, then copy or download the result.
LaunchColor Converter
Convert HEX, RGB, HSL, CMYK, and common CSS color names, then copy the values used in stylesheets.
LaunchColor Palette Generator
Pick a base color, preview harmony palettes and a 100-900 shade scale, then copy HEX, CSS or Tailwind values.
LaunchColor Picker
Upload an image and sample colors with a zoom square or your browser color loupe, or use the native browser picker and HEX values. Copy HEX, RGB, or HSL values for CSS and design work.
LaunchCron Expression Generator
Pick a preset or set each field, then copy the cron expression, plain-English schedule, and next run times.
LaunchFraction Calculator
Add, subtract, multiply, or divide two fractions. Enter whole-number numerators and denominators, pick +, -, *, or /, and press Calculate to get the answer reduced to lowest terms, shown as a mixed number and a decimal when appropriate, with the working steps underneath.
LaunchAge Calculator
Compare a birth date with any date to get calendar years, months, days, and total elapsed days.
LaunchPassword Generator
Create strong random passwords in your browser with length, character set, and ambiguity controls.
LaunchCSS Formatter
Turn minified or messy stylesheets into readable, consistently indented CSS in your browser.
LaunchJSON Minifier
Minify pasted JSON, see how many characters were removed, and copy the compact output or download it as minified.json.
LaunchRemove Duplicate Lines
Remove repeated lines from pasted text while keeping each first occurrence. Toggle case-sensitive and trim matching as needed.
LaunchCanonical URL Generator
Turn a page URL into a copy-ready rel=canonical link tag. Add https:// automatically, and control lowercase and trailing-slash output.
LaunchBMI Calculator
Calculate BMI, see the standard adult category, and estimate the reference weight range for your entered height.
LaunchJSON Formatter & Validator
Format, compact, or validate JSON in your browser with live output, line numbers, folding, search, and adjustable font size. Copy or download the result.
LaunchWord Counter
Count words, characters, sentences, and paragraphs as you type or paste. Choose a reading speed for reading time, review the most frequent words, and set a word target to track progress.
LaunchRoman Numeral Converter
Convert whole numbers from 1 to 3999 into Roman numerals, or turn Roman numerals like MMXXIV back into numbers.
LaunchSHA-256 Hash Generator
Hash text or a local file with SHA-256 entirely in your browser. Copy the digest as lowercase hex, uppercase hex, or base64.
LaunchBMR Calculator
Estimate your basal metabolic rate in kcal per day from age, sex, height, and weight, using the Mifflin-St Jeor, Revised Harris-Benedict, or Katch-McArdle equation, with a daily calorie table for five activity levels.
LaunchXML Formatter & Validator
Format XML with readable indentation and check XML syntax for common structural errors.
LaunchPercentage Change Calculator
Calculate the percentage increase or decrease between two values, with the step-by-step formula, the percent difference, and a reverse mode that finds the original value. Free and private.
LaunchTXT to PDF Converter
Convert plain text into a downloadable PDF in your browser. Paste text or drop a .txt file and set page size, margins, font, line spacing, alignment, headers, footers and page numbers.
LaunchJSON Viewer
Explore JSON in an interactive tree with search, node paths, type labels, and copy options. Everything runs in your browser.
LaunchCSS Minifier
Minify CSS in your browser by removing comments and safe whitespace, then copy or download the compact result.
LaunchText Case Converter
Convert text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, dot.case and more, then clean it up with one-click text operations and download the result as a .txt file.
LaunchEmail Extractor
Paste any text and instantly extract all email addresses. Deduplicate, sort, filter and export to TXT or CSV right in your browser.
LaunchHTML Minifier
Minify HTML in your browser by removing comments and extra whitespace, then copy or download the compact result.
LaunchIP Address Info
Check IPv4 and IPv6 address details: location, ISP, ASN, hostname, timezone. Detect private and reserved ranges, then copy or download the report.
LaunchRandom String Generator
Generate random alphanumeric strings with configurable length and character sets - runs locally in your browser.
LaunchCompound Interest Calculator
Calculate compound growth from a starting balance, regular contributions, an interest rate, and a compounding frequency. See future value, total interest, APY, inflation and tax adjusted results, a growth chart, and a year-by-year breakdown, all in your browser.
LaunchFavicon Generator
Generate a favicon.ico, six PNG favicon sizes, and a ZIP package in your browser, then copy the HTML tags your site needs.
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