ToolkitAll 218 tools
Every Toolkit Pro tool, grouped by category. Each one runs entirely in your browser — no sign-up, no uploads, nothing sent to a server.
Text & Writing 34 tools
- Acronym GeneratorBuild an acronym from the first letter of each word.
- Anagram CheckerSee if two words or phrases are anagrams of each other.
- Case ConverterSwitch between UPPER, lower, Title, Sentence, camelCase and snake_case.
- Character Frequency AnalyzerCounts how often each letter appears in your text — handy for puzzles, ciphers and cryptic crosswords.
- Duplicate Line RemoverKeep only the first occurrence of each line.
- Duplicate Word & Phrase FinderFinds words that repeat too often in your text, with counts, so you can vary your wording.
- Emoji Picker & Copy ToolSearch hundreds of emoji by keyword and copy them straight to your clipboard.
- Find & ReplaceReplace every match of a word or pattern, with optional case match or regex.
- HTML Tag StripperRemove all HTML tags and leave just the plain text.
- Line Prefixer & NumbererAdd line numbers, bullets or a custom prefix to every line.
- Line SorterSort lines A→Z, Z→A, by length, or shuffle them randomly.
- Lorem Ipsum GeneratorGenerate placeholder paragraphs for mockups and layouts.
- Palindrome CheckerCheck whether a word or phrase reads the same backwards.
- Readability Score CheckerEstimate how easy your text is to read using the Flesch Reading Ease and Flesch-Kincaid Grade Level formulas.
- Remove Emoji & Special CharactersStrip emoji or non-alphanumeric symbols out of a block of text.
- ROT13 / Caesar CipherShift letters by any amount — the classic substitution cipher.
- Slug GeneratorTurn a title into a clean, URL-friendly slug.
- Smart Quotes & Dash ConverterTurn straight quotes into curly quotes and “--” into proper dashes.
- Speech to Text (Voice Typewriter)Dictate out loud and have your browser type it for you — great for drafting notes hands-free.
- Text Diff CheckerCompare two blocks of text line by line and highlight what changed.
- Text Encryptor / DecryptorEncrypt or decrypt short text with a password, using a reversible XOR cipher. For fun and light obfuscation, not serious security.
- Text RepeaterRepeat a block of text a set number of times with a separator.
- Text ShufflerRandomly shuffle the words or characters in a block of text.
- Text Table / Column AlignerPaste comma, tab or pipe-separated text and get a neatly aligned, monospace table.
- Text to Speech ReaderHave your browser read text out loud, with adjustable voice, speed and pitch.
- Text TruncatorCut text down to a character or word limit with an optional ellipsis.
- Text Wrap FormatterWrap long text to a fixed line width — handy for code comments or plain-text email.
- Text ⇄ ASCII CodesConvert text to decimal character codes and back.
- Text ⇄ BinaryConvert plain text to 8-bit binary and back again.
- Text ⇄ Morse CodeEncode text to Morse code, or decode Morse back to text.
- Whitespace CleanerTrim lines, collapse repeated spaces and squash extra blank lines.
- Word & Character CounterLive word, character, sentence and paragraph counts plus reading time.
- Word Cloud GeneratorTurn any block of text into a visual word cloud, sized by how often each word appears.
- Word Frequency CounterCount how many times each word appears and rank the most common.
Image & Design 32 tools
- ASCII Art GeneratorTurn a photo into text-based ASCII art you can copy anywhere.
- Border Radius GeneratorFine-tune each corner’s roundness and copy the CSS.
- Box Shadow GeneratorBuild a CSS box-shadow visually and copy the code.
- Color Blindness SimulatorPreview how an image looks under protanopia, deuteranopia or tritanopia.
- Color Contrast CheckerCheck foreground/background contrast against WCAG AA and AAA.
- Color ConverterConvert a color between HEX, RGB and HSL — all three stay in sync.
- Color Palette GeneratorGenerate tints, shades and complementary colors from one base color.
- Color Picker From ImageClick anywhere on an uploaded image to read that pixel’s color.
- CSS Gradient GeneratorDesign a linear or radial gradient and copy the ready-to-use CSS.
- Dominant Color Palette ExtractorPull the most common colors out of an uploaded image.
- Favicon GeneratorTurn any image into 16×16, 32×32 and 180×180 favicon PNGs.
- Image AdjusterTune brightness, contrast, saturation and blur, then export the result.
- Image Background Color RemoverMake a solid-color background transparent — great for logos and product photos with a plain white or green background.
- Image Border / Frame AdderAdd a solid-color border or frame around an image, with adjustable width and color.
- Image Collage MakerCombine two or four photos into a single grid collage you can download as one image.
- Image CompressorReduce a JPEG’s file size by adjusting quality, with a live size estimate.
- Image CropperDrag a rectangle over your image and export just that area.
- Image Dimensions & File Size InspectorCheck an image’s exact pixel size, aspect ratio, file size and type.
- Image FiltersApply grayscale, sepia or color-inversion filters to an image.
- Image FlipperMirror an image horizontally or vertically.
- Image Format ConverterConvert an image between PNG, JPEG and WebP.
- Image PixelatorApply a blocky mosaic / pixelate effect to an image, with adjustable block size.
- Image ResizerResize an image to exact pixel dimensions, with optional locked aspect ratio.
- Image RotatorRotate an image by 90°, 180° or 270°.
- Image Rounded Corners GeneratorRound the corners of an image and export it as a transparent PNG.
- Image UpscalerEnlarge an image by 2×, 3× or 4×, with a choice of smooth or pixel-sharp scaling.
- Image Watermark ToolStamp a custom text watermark onto an image.
- Image ⇄ Base64Convert an image file to a Base64 data URI, or preview a data URI as an image.
- Meme GeneratorAdd bold top and bottom captions to any image, classic meme-style.
- Placeholder Image GeneratorCreate a solid-color placeholder image with custom text and size.
- Random Color GeneratorGenerate random colors with one click, and keep a history to compare.
- SVG to PNG ConverterPaste SVG markup and export it as a PNG at any size.
Calculators & Converters 50 tools
- Age CalculatorFind your exact age in years, months and days, plus days to your next birthday.
- Area CalculatorCalculate the area of rectangles, circles, triangles and trapezoids.
- Aspect Ratio CalculatorFind the simplified aspect ratio of a width and height, or scale one dimension to match the other.
- Average, Median & Mode CalculatorPaste a list of numbers to get the mean, median, mode and range.
- BMI CalculatorCalculate Body Mass Index from weight and height, in metric or imperial.
- BMR & Calorie CalculatorEstimate your Basal Metabolic Rate and daily calorie needs using the Mifflin-St Jeor formula.
- Body Fat Percentage CalculatorEstimate body fat percentage using the U.S. Navy tape-measure method.
- Break-Even Point CalculatorFind how many units you need to sell to cover your fixed and variable costs.
- Business Days CalculatorCount the number of weekdays (Monday–Friday) between two dates, excluding weekends.
- Compound Interest CalculatorSee how an investment grows with compounding interest over time.
- Countdown to Date CalculatorCount down the days, hours, minutes and seconds remaining until any future date.
- Currency Converter (Manual Rate)Convert an amount using an exchange rate you enter — no live rates, fully offline.
- Date Add / SubtractAdd or subtract days, weeks, months or years from a date.
- Date Difference CalculatorFind the exact number of years, months and days between two dates.
- Day of the Week FinderFind out what day of the week any past or future date falls on.
- Discount CalculatorWork out the sale price and savings from a percentage discount.
- EMI / Loan CalculatorWork out your monthly loan payment, total interest and total payment.
- Fraction CalculatorAdd, subtract, multiply or divide two fractions, with the result simplified automatically.
- Fuel Cost CalculatorEstimate fuel needed and trip cost from distance and efficiency.
- GPA / CGPA CalculatorCalculate your weighted grade point average from course grade points and credit hours.
- Grade / Weighted Average CalculatorAdd your assignments, tests and their weights to calculate your overall weighted grade.
- GST / Sales Tax CalculatorAdd tax to a price, or work out the pre-tax price from a tax-inclusive total.
- Investment Return (CAGR) CalculatorCalculate the Compound Annual Growth Rate of an investment between two values.
- ISO Week Number CalculatorFind the ISO 8601 week number for any date.
- LCM & GCD CalculatorFind the Least Common Multiple and Greatest Common Divisor of two numbers.
- Length ConverterConvert between metres, kilometres, feet, miles and more.
- Loan Amortization Schedule CalculatorSee a full month-by-month breakdown of principal, interest and remaining balance for a loan.
- Markup CalculatorWork out the selling price and profit from a cost and a markup percentage.
- Mortgage CalculatorEstimate your monthly mortgage payment from home price, down payment and interest rate.
- Number to Words ConverterSpell out any whole number in English words.
- Overtime Pay CalculatorCalculate regular pay, overtime pay and total pay from hours worked.
- Percentage CalculatorFind a percentage of a number, what percent one number is of another, or percent change.
- Profit Margin CalculatorCalculate gross profit, profit margin and markup from revenue and cost.
- Quadratic Equation SolverSolve ax² + bx + c = 0 for real or complex roots, with the discriminant shown.
- Retirement Savings CalculatorProject how your retirement savings will grow with regular monthly contributions and compound growth.
- Roman Numeral ConverterConvert whole numbers to Roman numerals and back.
- Salary / Hourly Wage CalculatorConvert between an hourly rate and an annual salary.
- Sales Commission CalculatorCalculate commission earned on sales, plus total earnings with an optional base salary.
- Simple Interest CalculatorCalculate simple interest and the total amount owed or earned.
- Speed / Distance / Time CalculatorSolve for speed, distance or time when you know the other two.
- Standard Deviation CalculatorCalculate population and sample variance and standard deviation.
- Stopwatch & Lap TimerA simple stopwatch with lap timing, running entirely in your browser tab.
- Temperature ConverterConvert between Celsius, Fahrenheit and Kelvin.
- Time Duration AdderAdd up multiple time durations (hours, minutes, seconds) to get a total — handy for totaling work shifts or clips.
- Time Zone Offset ConverterConvert a clock time between two UTC offsets.
- Tip & Bill Split CalculatorAdd a tip and split the total evenly between any number of people.
- Unit Price / Better Deal ComparatorCompare two package sizes and prices to see which one is actually the better deal per unit.
- Volume CalculatorCalculate the volume of a cube, cylinder, sphere or cone.
- Weight ConverterConvert between kilograms, pounds, ounces and more.
- World ClockSee the current time in major cities around the world, updated live.
Dev Tools 29 tools
- Base64 Encoder / DecoderEncode text to Base64 or decode Base64 back to text (UTF-8 safe).
- Code Diff ViewerCompare two versions of a code snippet line by line.
- Color Code Snippet GeneratorTurn a hex color into CSS variable, SCSS, RGBA and Tailwind-style snippets.
- Credit Card Number Validator (Luhn)Check whether a card number passes the Luhn checksum used by real card issuers — handy for testing payment forms.
- Cron Expression ExplainerBreak down a 5-field cron expression into plain English.
- CSS MinifierStrip comments and extra whitespace from a CSS file.
- CSS Unit ConverterConvert a length between px, em, rem, pt and %, based on a chosen base font size.
- Download Time EstimatorEstimate how long a file will take to download (or upload) at a given internet speed.
- Fake JSON Data GeneratorGenerate placeholder JSON records for testing UIs and APIs.
- Hash GeneratorCompute SHA-1, SHA-256, SHA-384 or SHA-512 hashes of any text.
- HTML Entity Encoder / DecoderEscape special characters to HTML entities, or decode them back.
- HTTP Status Code LookupSearch HTTP status codes and see what each one means.
- JS Minifier (Basic)Strip comments and blank lines from JavaScript — safe on strings, no token squashing.
- JSON Formatter & ValidatorPretty-print, minify and validate JSON, with clear error messages.
- JSON ⇄ CSV ConverterConvert an array of JSON objects to CSV, or CSV back to JSON.
- JWT DecoderDecode a JSON Web Token’s header and payload — no signature verification.
- Markdown PreviewerWrite Markdown on the left and see the rendered preview on the right.
- Number Base ConverterConvert a number between binary, octal, decimal and hexadecimal live.
- Password GeneratorGenerate a strong random password with a live strength estimate.
- Query String Parser & BuilderBreak a URL’s query string into a table, or build one from key/value pairs.
- Random Number GeneratorGenerate random integers in a range, with an optional uniqueness constraint.
- Random String / Token GeneratorGenerate random alphanumeric strings for tokens, IDs or test data.
- Regex TesterTest a regular expression against sample text and see every match.
- Screen Resolution & Viewport InfoSee your screen resolution, browser viewport size, pixel ratio and other display details at a glance.
- Subnet / CIDR CalculatorEnter an IPv4 address and CIDR prefix to get the subnet mask, network range and usable host count.
- Unix Timestamp ConverterConvert between Unix timestamps and human-readable dates.
- URL Encoder / DecoderPercent-encode text for URLs, or decode a percent-encoded string.
- UUID GeneratorGenerate one or many RFC-4122 version 4 UUIDs.
- XML FormatterPretty-print minified or single-line XML with proper indentation.
Unit Converters 15 tools
- Acceleration ConverterConvert between m/s², ft/s², standard gravity (g) and Gal.
- Angle ConverterConvert between degrees, radians, gradians, arcminutes and arcseconds.
- Data Storage ConverterConvert between bits, bytes, KB, MB, GB, TB and PB using binary (1024-based) units.
- Decibel (dB) CalculatorConvert between a power or amplitude ratio and decibels (dB).
- Digital Data Rate ConverterConvert between bps, kbps, Mbps, Gbps and bytes/KB/MB per second.
- Energy ConverterConvert between joules, calories, watt-hours, kilowatt-hours and BTU.
- Force ConverterConvert between newtons, kilonewtons, pound-force, dyne and kilogram-force.
- Frequency ConverterConvert between hertz, kilohertz, megahertz and gigahertz.
- Fuel Economy ConverterConvert between MPG (US), MPG (UK/Imperial), km per litre and litres per 100km.
- Illuminance ConverterConvert between lux and foot-candles.
- Power ConverterConvert between watts, kilowatts, horsepower and BTU per hour.
- Pressure ConverterConvert between pascals, bar, PSI, atmospheres and mmHg.
- Radiation Dose ConverterConvert between gray, rad, sievert and rem.
- Time ConverterConvert between milliseconds, seconds, minutes, hours, days, weeks, months and years.
- Torque ConverterConvert between newton-metres, pound-feet, pound-inches and kilogram-force metres.
Color & CSS 6 tools
- Color Name FinderEnter a hex or RGB color and find its closest standard CSS color name.
- Color Shades & Tints GeneratorEnter a base color and get a full scale of lighter tints and darker shades, ready to use as a palette.
- CSS Animation (Keyframes) GeneratorCreate a simple CSS @keyframes animation — pick a transform, duration and easing, preview it live, and copy the code.
- CSS Clip-Path GeneratorPick a shape and get the matching CSS clip-path code, with a live preview.
- CSS Flexbox GeneratorPick flex-direction, justify-content and align-items visually, and copy the generated CSS.
- CSS Grid GeneratorBuild a CSS Grid layout visually — set columns, rows and gap, and copy the code.
SEO & Marketing 14 tools
- A/B Test Sample Size CalculatorEstimate how many visitors per variant you need for a statistically meaningful A/B test.
- Ad Character CounterCheck your headline and description against common ad character limits for Google and Facebook ads.
- Canonical Tag GeneratorGenerate a canonical link tag to tell search engines the preferred URL for a page.
- Google SERP Snippet PreviewSee a live mockup of how your page title, URL and description will look in Google search results.
- Hashtag FormatterTurn a list of keywords or phrases into clean, ready-to-use hashtags — with duplicates removed and casing normalized.
- Keyword Density CheckerCheck how often a keyword or phrase appears in your text, and its density as a percentage of total words.
- Meta Description Length CheckerCheck whether your meta description fits Google’s search snippet before it gets cut off.
- Meta Tag GeneratorGenerate the essential HTML meta tags — title, description, keywords and author — ready to paste into your page head.
- Open Graph Tag GeneratorGenerate Open Graph meta tags so your page looks right when shared on Facebook, LinkedIn and other platforms.
- Robots.txt GeneratorBuild a robots.txt file with allow/disallow rules and a sitemap reference.
- SEO Title Tag Length CheckerCheck whether your page title fits within Google’s search result display before it gets truncated.
- Twitter Card Tag GeneratorGenerate Twitter/X Card meta tags so your links preview correctly when shared.
- UTM Campaign URL BuilderBuild a trackable campaign URL with UTM source, medium, campaign and optional term/content parameters.
- XML Sitemap GeneratorTurn a list of page URLs into a valid sitemap.xml file, ready to submit to search engines.
Productivity 14 tools
- Countdown TimerA simple minutes-and-seconds countdown timer for quick tasks, cooking or breaks.
- Dice Roller & Coin FlipRoll one or more virtual dice, or flip a coin — for games, decisions or classroom activities.
- Habit TrackerTrack daily habits with a simple 7-day grid and see your current streak — saved in this browser.
- Invoice Generator (Printable)Fill in your business and client details, add line items, and print or save a clean invoice as a PDF.
- Meeting Cost CalculatorEstimate what a meeting actually costs, based on attendees, their average pay rate and the meeting length.
- Notepad (Auto-Saving)A distraction-free scratchpad that automatically saves what you type in this browser.
- Online Whiteboard / SketchpadA simple freehand drawing canvas — sketch ideas, diagrams or doodles and save them as an image.
- Pomodoro TimerA focus timer with work and break cycles, based on the classic 25/5 Pomodoro technique.
- Random Decision MakerCan’t decide? List your options, one per line, and let chance pick for you.
- Random Quote GeneratorGet an inspiring or thought-provoking quote at the click of a button, ready to copy or share.
- Random Team / Group GeneratorPaste a list of names and instantly split them into a chosen number of random, balanced groups.
- Random Username GeneratorGenerate fun, available-sounding usernames by combining adjectives, nouns and numbers.
- To-Do ListA simple checklist that saves itself in your browser — add, check off and remove tasks.
- Typing Speed Test (WPM)Test how fast and accurately you type — get your words-per-minute and accuracy score.
Security 8 tools
- File Checksum GeneratorCompute the MD5, SHA-1, SHA-256 or SHA-512 checksum of a local file to verify its integrity.
- Hash Comparison ToolCompare two hash or checksum strings to verify they match, ignoring case and extra whitespace.
- MD5 GeneratorCompute the MD5 hash of any text. Provided for legacy compatibility -- MD5 is not secure for passwords.
- Passphrase GeneratorGenerate strong, memorable passphrases made of random dictionary words — easier to type and recall than random characters.
- Password Strength CheckerCheck how strong an existing password is, with a criteria checklist and estimated crack time.
- PIN GeneratorGenerate secure random numeric PINs, with an option to avoid repeating or sequential digits.
- Secret Key GeneratorGenerate cryptographically secure secret keys in hex or Base64, for API secrets and encryption keys.
- Secure Random Number GeneratorGenerate cryptographically secure random integers using the Web Crypto API, free of modulo bias.
PDF Tools 16 tools
- Image to PDF ConverterCombine one or more JPG/PNG images into a single PDF, one image per page.
- PDF Blank Page InserterInsert one or more blank pages into a PDF at a position you choose.
- PDF Compressor
- PDF Form FillerFill in the fillable form fields of a PDF (text boxes, checkboxes, dropdowns) and save a completed copy.
- PDF MergerCombine multiple PDF files into a single PDF, in the order you choose.
- PDF Metadata Editor
- PDF Page Count & Info Viewer
- PDF Page Delete / ExtractRemove specific pages from a PDF, or extract only the pages you choose into a new file.
- PDF Page Number AdderStamp page numbers onto every page of a PDF, in the position and format you choose.
- PDF Page ReorderRearrange the pages of a PDF into a new order using page thumbnails.
- PDF Page RotatorRotate all or selected pages of a PDF by 90, 180 or 270 degrees.
- PDF SplitterSplit a PDF into individual single-page files, or extract a page range into a new PDF.
- PDF Text ExtractorPull the plain text content out of a PDF so you can copy or search it.
- PDF to Grayscale ConverterConvert every page of a PDF to grayscale, ready for black-and-white printing.
- PDF to JPG ConverterRender each page of a PDF as a downloadable JPG or PNG image.
- PDF Watermark AdderStamp a text watermark across every page of a PDF, with adjustable size, opacity and position.