All tools
Search 500 tools by name, category or keyword.
.editorconfig Generator
Build an .editorconfig file in seconds.
.env to JSON Parser
Parse a .env file into clean JSON.
.gitignore Generator
Combine ignore templates for your stack and tools.
Acceleration Converter
Convert g, m/s², ft/s² and more.
Accessible Color Pair Finder
Check WCAG contrast and fix failing pairs.
Add or Subtract Days
Shift a date by days, weeks, months or years.
Add Page Numbers
Stamp page numbers onto any PDF, in your browser.
Adler-32 Checksum
Compute the zlib Adler-32 checksum of text or hex.
AES Text Decryptor
Decrypt AES-256-GCM text with your password.
AES Text Encryptor
Encrypt and decrypt text with AES-256-GCM.
Age Calculator
Exact age in years, months, days and totals.
Age in Days Weeks Months
See any age as years, months, days, weeks and hours.
Anagram & Palindrome Checker
Check if text is a palindrome or two words are anagrams.
Analogous Color Scheme
Build harmonious analogous palettes from one colour.
Angle Converter
Convert degrees, radians, gradians and more.
Annuity Calculator
Solve annuity payment, future value or present value.
Area Calculator
Area and perimeter for six common shapes.
ASCII Table Reference
Searchable ASCII table with dec, hex, oct and binary.
Ascii85 Encoder Decoder
Encode and decode Ascii85 (Base85) text.
Aspect Ratio Calculator
Simplify ratios and find missing dimensions.
Atbash Cipher
Encode and decode text with the mirror-alphabet cipher.
Auto Loan Calculator
Estimate car payments with tax, trade-in and down payment.
Average Calculator
Mean, median, mode and range in one click.
Bacon Cipher
Encode and decode Francis Bacon’s A/B cipher.
Barcode Generator
Make a Code 128 barcode and download it as SVG.
Base32 Encode / Decode
Encode and decode Base32 (RFC 4648).
Base58 Encoder Decoder
Encode and decode Base58 (Bitcoin/IPFS alphabet).
Base64 Encode / Decode
Encode and decode Base64, UTF-8 safe.
Base64 to Hex
Decode Base64 and view the bytes as hexadecimal.
Base64 to Image
Decode a base64 string back into a viewable image.
Base91 Encoder Decoder
Encode and decode basE91, denser than Base64.
Batch Resize / Rename
Resize and rename many images at once, in your browser.
Battery Status Viewer
Live charge level and time remaining.
Binary to Decimal Converter
Turn binary into decimal instantly.
Bionic Reading Converter
Bold word beginnings to read faster.
Blood Alcohol Calculator
Estimate your BAC with the Widmark formula.
BMI Calculator
Body Mass Index from weight and height.
BMR Calculator
Estimate resting calories burned per day.
Body Fat Percentage Calculator
Estimate body fat from tape measurements.
Body Surface Area Calculator
Estimate body surface area with four formulas.
Bold Unicode Text
Make 𝗯𝗼𝗹𝗱 text that works anywhere.
Break-Even Calculator
Find the units and revenue you need to break even.
Brightness and Contrast Adjuster
Fine-tune photo brightness and contrast in your browser.
Browser Info Viewer
Inspect your browser, OS and environment.
Business Days Calculator
Count working days between two dates.
Caesar Cipher
Encrypt and decrypt text with a shift cipher.
CAGR Calculator
Compute the compound annual growth rate.
Calendar Generator
Build a printable month calendar for any year.
Calories Burned Calculator
Estimate calories burned from activity and time.
Case Converter
camelCase, snake_case, kebab, Title & more.
Character Frequency Counter
Tally how often each character appears in text.
Chinese Zodiac Finder
Find your Chinese zodiac animal and element by year.
Chmod Calculator
Build Unix file permissions visually.
CIDR / Subnet Calculator
Work out network, broadcast and host range from a CIDR.
Circle Calculator
Find radius, diameter, circumference and area.
Circle-crop Avatar
Crop any photo into a round avatar with transparency.
Clipboard Inspector
Inspect what you just copied: type, size, counts.
Clothing Size Converter
Convert clothing sizes between US, UK, EU and IT.
CMYK to RGB Converter
Turn print CMYK ink values into screen RGB and hex.
Coin Counter
Tally a jar of coins to an exact total.
Coin Flip
Flip a virtual coin once or thousands of times.
Color Blindness Simulator
See your colour through colour-blind eyes.
Color Contrast Quick Check
Instant WCAG pass/fail for any text & background.
Color Format Converter
Convert between HEX, RGB and HSL instantly.
Color Mixer
Blend two hex colours at any ratio.
Color Palette Generator
Build harmonious palettes from one base colour.
Color Picker from Image
Click any pixel to grab its HEX, RGB & HSL value.
Color Tint and Shade Table
Build tint and shade ramps from one base colour.
Color Tint Overlay
Wash any image with a colour at the strength you choose.
Colour Contrast Checker
Test text contrast against WCAG AA and AAA.
Column Extractor
Pull selected columns from CSV, TSV or tables.
Common Ports Reference
Look up well-known TCP/UDP port numbers and services.
Compare Two Lists
Find common and unique items across two lists.
Complementary Color Finder
Find the opposite colour on the wheel, instantly.
Compound Interest Calculator
Grow savings with interest and contributions.
Compress Image
Shrink JPEG file size in your browser, privately.
Compress PDF
Shrink a PDF losslessly, in your browser.
Content Security Policy Builder
Assemble a valid CSP header or meta tag, directive by directive.
Convert Image Format
Change images between PNG, JPG and WebP in your browser.
Cookie Header Parser
Decode Cookie and Set-Cookie headers into fields.
Cooking Measurement Converter
Cups, spoons, ml and ounces for recipes.
Countdown to New Year
Live ticking countdown to the next New Year.
Coupon Code Generator
Bulk-generate unique, readable promo and coupon codes.
CRC32 Checksum
Compute a CRC32 checksum in hex and decimal.
Credit Card Payoff Calculator
See how fast a fixed payment clears your card.
Credit Card Validator
Check a card number with Luhn and detect its brand.
Cron Builder Explainer
Build and decode cron schedules in plain English.
Crontab Explainer
Turn a cron expression into plain English.
Crop PDF Margins
Trim white margins off every PDF page in your browser.
CSS Animation Generator
Build @keyframes and animation shorthand in seconds.
CSS Border Radius Generator
Round each corner with sliders and a live preview.
CSS Box Shadow Generator
Design a box-shadow with sliders and live preview.
CSS clamp() Fluid Type
Build a fluid CSS clamp() value for type and spacing.
CSS Clip-path Generator
Generate CSS clip-path shapes with a live preview.
CSS Gradient Generator
Build linear and radial gradients with a live preview.
CSS Grid Generator
Visually build CSS grid layouts and copy the code.
CSS Minifier & Beautifier
Minify or beautify CSS in your browser.
CSS Specificity Calculator
Score any CSS selector as an (a,b,c) triple.
CSS Triangle Generator
Make pure-CSS triangles with the border trick.
CSS Unit Converter
Convert between px, rem, em, pt and percent.
CSV Column Split / Merge
Keep, reorder or combine CSV columns.
CSV Delimiter Converter
Swap CSV separators: comma, semicolon, tab, pipe.
CSV to Markdown Table
Turn CSV into a clean GitHub-flavored Markdown table.
CSV to SQL Converter
Turn CSV rows into SQL INSERT statements.
CSV Viewer
View and scan CSV files as a clean table.
Cubic Bezier Editor
Craft CSS easing curves visually.
CUID Generator
Generate collision-resistant, URL-safe CUIDs.
cURL to Fetch
Turn a cURL command into JavaScript fetch code.
Currency Converter
Offline currency maths with an editable rate table.
Cursive Text Generator
Turn plain text into flowing cursive Unicode letters.
Daily Calorie Needs Calculator
Daily calories for your goal, with macros.
Data Size Converter
Bytes, KB/MB/GB and KiB/MiB/GiB, side by side.
Date Difference Calculator
Find the exact time between two dates.
Date Format Converter
Reformat any date into ISO, US, long and custom.
Day of the Week Finder
Find which weekday any date falls on.
Days in Month
How many days are in any month, leap years included.
Days Until a Date
Count down the days to any future date.
Debt Snowball Planner
See how fast the snowball clears your debts.
Decimal to Fraction
Turn any decimal into an exact, reduced fraction.
Delete / Extract Pages
Keep or remove specific PDF pages, in your browser.
Density Converter
Convert density between metric and imperial units.
Dice Roller
Roll any number of dice with a modifier.
Diceware Passphrase Generator
Memorable, high-entropy word passphrases.
Discount Calculator
Find the sale price or work back to the original.
Distance Between Points
Find the distance between two 2D points instantly.
Dividend Yield Calculator
Work out dividend yield and annual income.
Docker Compose Generator
Scaffold a docker-compose.yml with databases and cache.
Dockerfile Generator
Scaffold a clean Dockerfile in seconds.
Domain Parser
Split any host into subdomain, domain and TLD.
Dominant Color Extractor
Pull the main colours and a palette out of any image.
Dotenv Example Generator
Turn a .env file into a safe .env.example.
Download Time Calculator
How long a download takes at a given speed.
Duotone Generator
Blend two colours into a duotone ramp and CSS gradient.
Email Address Validator
Check email syntax and split out the local and domain parts.
Email Signature Generator
Create a clean HTML email signature in seconds.
Exponent Calculator
Raise any number to any power, instantly.
Extract Email Addresses
Pull every email out of any block of text.
Extract Numbers from Text
Pull every number out of any text.
Extract Text from PDF
Pull selectable text out of a PDF as plain .txt.
Extract URLs
Pull every link out of any block of text.
Factorial Calculator
Compute n!, permutations and combinations exactly.
Fake Data Generator
Realistic fake people for test fixtures.
Favicon Generator
Turn any image into crisp favicon & app-icon PNGs.
Find & Replace
Literal or regex find and replace with a count.
Flatten PDF Forms
Bake filled form fields into a non-editable PDF, in-browser.
Flexbox Grid Playground
Tweak flexbox visually and copy the CSS.
Flow Rate Converter
Convert between L/min, m³/h, gpm, cfm and more.
Force Converter
Convert between newtons, pounds-force, kgf and more.
Fraction Calculator
Add, subtract, multiply and divide fractions.
Fraction Simplifier
Reduce a fraction and convert it to decimal or mixed form.
Fraction to Decimal
Turn any fraction into its exact decimal.
Frequency Converter
Convert hertz, kHz, MHz, GHz, rpm, rad/s and bpm.
Fuel Cost Calculator
Estimate the fuel cost of any trip.
Fuel Economy Converter
Convert MPG, km/L and L/100km instantly.
Future Value Calculator
See what your savings grow into with compounding.
GCD & LCM Calculator
Find the greatest common divisor and least common multiple.
Geolocation Viewer
See your device coordinates and accuracy.
GIF to Frames
Split an animated GIF into individual PNG frames.
Glassmorphism CSS Generator
Design a frosted-glass effect and copy the CSS.
Gradient Color Stops
Interpolate even color stops between two hex colors.
GraphQL Query Formatter
Pretty-print and indent GraphQL queries.
Gravatar URL Generator
Turn an email into a Gravatar avatar URL.
Habit Tracker
Track daily habits and watch your streaks.
Hash Generator
MD5, SHA-1, SHA-256, SHA-512 of any text.
Hash Identifier
Guess a hash type from its length and character set.
Heart Rate Zone Calculator
Find your five training heart-rate zones by age.
HEX / RGB / HSL Converter
Convert colours between HEX, RGB and HSL.
Hex / Text / Binary Converter
Convert text to hex or binary and back.
Hex Dump Viewer
See text as a classic hexdump with ASCII gutter.
HMAC Generator
Keyed HMAC-SHA1/256/512 of any message.
Hourly Rate Calculator
Find the freelance rate that hits your income goal.
Hours Calculator
Add up the hours between two times, minus breaks.
HSV and HSB Converter
Convert hex and RGB to HSV / HSB values.
Htaccess Builder
Build Apache .htaccess rules with a few clicks.
HTML Boilerplate Generator
Build a clean HTML5 starter document in seconds.
HTML Entity Encode / Decode
Escape and unescape HTML entities.
HTML Escape Unescape
Encode or decode HTML special characters.
HTML Formatter / Minifier
Beautify or minify HTML in your browser.
HTML Table to CSV
Turn an HTML table into clean CSV in one paste.
HTML Table to JSON
Turn an HTML table into clean JSON.
HTML to Markdown
Convert HTML into clean, readable Markdown.
HTTP Header Reference
Searchable guide to common HTTP headers.
HTTP Status Code Reference
Search every standard HTTP status code.
IBAN Validator
Validate and format IBANs with the mod-97 check.
ICO Generator
Turn any image into a multi-size Windows .ico file.
Ideal Weight Calculator
Estimate ideal body weight four ways from height.
Illuminance Converter
Convert lux, foot-candles, phot and more.
Image Blur Tool
Softly blur any image right in your browser.
Image Border / Padding
Add a solid colour border or padding around any image.
Image Collage Maker
Combine several photos into one grid collage in-browser.
Image DPI Setter
Set the print DPI of a PNG or JPEG without re-encoding.
Image Filters
Adjust brightness, contrast, saturation and more live.
Image Grid Splitter
Slice an image into an even grid of tiles in your browser.
Image Histogram Viewer
See the tonal and colour distribution of any photo.
Image Noise Generator
Add film grain or colour noise to any image, in-browser.
Image Sharpen Tool
Crisp up soft or slightly blurry photos in your browser.
Image Threshold
Convert any photo to pure black and white by brightness.
Image to ASCII
Turn any photo into ASCII text art in your browser.
Image to Base64
Encode an image as a base64 data URI in your browser.
Image to Grayscale
Convert any image to black & white in your browser.
Image Vignette
Darken the edges to draw the eye to your subject.
Image Watermark Tool
Stamp text watermarks onto photos in your browser.
Images to PDF
Combine PNG and JPEG images into a single PDF, in your browser.
IMEI Validator
Check if a 15-digit IMEI is valid.
Inflation Calculator
See how inflation changes money over time.
INI to JSON
Convert INI config files into clean JSON.
Invert Image Colors
Flip every colour to its opposite, right in your browser.
IP to Binary Converter
Turn an IPv4 address into binary, decimal and hex.
IPv6 Address Expander
Expand and compress IPv6 addresses instantly.
ISBN Generator
Make valid ISBN-13 and ISBN-10 numbers for testing.
ISBN Validator
Check ISBN-10 and ISBN-13 numbers instantly.
ISO Week Date Converter
Convert dates to and from ISO 8601 week numbers.
JS Minifier / Beautifier
Minify or pretty-print JavaScript in your browser.
JSON Diff
Compare two JSON documents and see what changed.
JSON Escape and Unescape
Encode or decode JSON string values.
JSON Flattener
Flatten nested JSON into dot-notation keys.
JSON Formatter
Format, validate & beautify JSON in your browser.
JSON Merge
Deep-merge two JSON documents into one.
JSON Schema to TypeScript
Turn a JSON Schema into TypeScript interfaces.
JSON Schema Validator
Check JSON data against a JSON Schema in your browser.
JSON Sort Keys
Alphabetise JSON object keys, deeply and instantly.
JSON Stringify Tool
Re-serialise JSON with custom indentation or escaping.
JSON to CSV Converter
Convert JSON arrays to CSV and back, in-browser.
JSON to Go Struct
Generate Go structs from JSON instantly.
JSON to INI
Turn a JSON object into INI config text.
JSON to JSON Schema
Generate a draft-07 JSON Schema from sample data.
JSON to Markdown Table
Turn a JSON array of objects into a Markdown table.
JSON to NDJSON
Turn a JSON array into newline-delimited JSON.
JSON to Python Dataclass
Turn JSON into typed Python @dataclass code.
JSON to Query String
Build a URL query string from a JSON object.
JSON to TypeScript Interface
Turn any JSON sample into typed TS interfaces.
JSON to XML Attributes
Turn a flat JSON object into XML attributes.
JSON to XML Converter
Convert JSON to XML and XML back to JSON.
JSON to YAML Converter
Convert between JSON and YAML instantly.
JSON Unflattener
Rebuild nested JSON from dot-notation keys.
JSONPath Tester
Run JSONPath queries against your JSON live.
Julian Date Converter
Convert calendar dates to Julian Dates and back.
JWT Decoder
Inspect JWT header, payload & claims.
JWT Generator HS256
Sign a JWT with HMAC-SHA256 in your browser.
Kelvin to RGB Converter
Turn a colour temperature into an sRGB swatch.
Keyboard Event Tester
See key, code, keyCode and modifiers for any keypress.
Keyframes Spinner Generator
Build a CSS loading spinner, copy the code.
Lean Body Mass Calculator
Estimate your lean body mass and fat mass.
Leap Year Checker
Check whether a year is a leap year.
Leetspeak Converter
Turn text into 1337 and back again.
Letter Frequency Histogram
See how often each letter appears in your text.
License Picker
Choose an open-source licence and get the text.
Line Prefix & Numbering
Add a prefix, suffix or line numbers to every line.
Line Shuffler
Randomly reorder the lines of any list.
Linear Equation Solver
Solve a·x + b = c·x + d for x instantly.
Loan Calculator
Monthly payment, total cost and interest.
Logarithm Calculator
Compute logs in any base instantly.
Lorem Ipsum Generator
Classic placeholder text by word, sentence or paragraph.
Lorem Picsum URL Builder
Build placeholder image URLs for Lorem Picsum.
Lottery Number Generator
Random lottery picks with an optional bonus ball.
Luhn Number Validator
Verify any number with the Luhn checksum and find its check digit.
Luminance Converter
Convert any colour to its luminance and contrast ratio.
MAC Address Generator
Random, well-formed MAC addresses on demand.
Macro Nutrient Calculator
Turn a calorie target into protein, carb and fat grams.
Magic 8-Ball
Ask a question, shake for a classic answer.
Markdown Editor / Preview
Write Markdown, see HTML live and safely.
Markdown to HTML
Convert Markdown into clean, safe HTML.
Markup Calculator
Set a selling price from cost and markup.
Material Design Palette
Build a Material-style 50–900 colour ramp.
Max Heart Rate Calculator
Estimate your max heart rate from age, four ways.
Mean Calculator
Arithmetic, geometric and harmonic means.
Media Query Generator
Build responsive CSS media queries in seconds.
Median and Mode Calculator
Find the median and mode of any number set.
Merge and Dedupe Lists
Combine two lists and remove duplicate lines.
Merge PDF
Combine several PDFs into one, in your browser.
Meta / OG Tag Generator
Generate SEO, Open Graph and Twitter Card meta tags.
Metronome
A clean, accurate online metronome.
Midpoint Calculator
Find the midpoint and distance between two points.
MIME Type Lookup
Find the MIME type for any file extension.
Mock JSON API Generator
Generate JSON test data from a custom schema.
Modulo Calculator
Find the remainder and true modulo of any division.
Monochromatic Palette
Build a single-hue tints-and-shades palette.
Moon Phase Calculator
See the moon phase for any date.
Morse Code Translator
Translate text to Morse code and back.
Mortgage Amortization Schedule
Full payment-by-payment loan amortization table.
Mortgage Calculator
Estimate monthly mortgage payments and total cost.
N-up PDF
Place 2, 4, or more PDF pages on a single sheet.
Nano ID Generator
Short, URL-safe, secure random IDs.
NATO Phonetic Spelling
Spell anything in the NATO phonetic alphabet.
NDJSON to JSON
Convert NDJSON / JSON Lines into a JSON array.
Nearest Named Color
Find the closest CSS colour name to any colour.
Net Worth Calculator
See what you own minus what you owe.
Nginx Config Generator
Build an nginx server block in seconds.
Notepad (localStorage)
A private scratchpad saved in your browser.
NPV Calculator
Net present value and IRR for any cash flow series.
Number Base Converter
Convert numbers between any base 2–36.
Number Sequence Generator
Generate arithmetic, geometric and Fibonacci sequences.
Number to Words
Spell any number out in plain English.
Numeronym Generator
Turn long words into numeronyms like i18n and a11y.
Octal Converter
Convert octal to decimal, binary and hex instantly.
On-screen Ruler
A calibrated ruler right on your screen.
Open Graph Preview
See how your link looks when shared.
Ovulation Calculator
Estimate your fertile window and ovulation day.
Pace to Finish Time
Predict your race finish time from your pace.
Palette Extractor
Pull the dominant colours out of any image.
Paper Size Reference
Look up paper sizes in mm, inches, points and pixels.
Password Entropy Calculator
Measure password entropy in bits from its character pool.
Password Generator
Strong random passwords, fully in your browser.
Password Policy Tester
Check a password against your exact rules.
Password Strength Checker
Score a password and get specific ways to strengthen it.
PDF Bookmark Viewer
See a PDF outline as a table of contents, in your browser.
PDF Image Extractor
Pull every embedded picture out of a PDF, in your browser.
PDF Metadata Editor
View and edit PDF title, author, and keywords.
PDF Page Counter
Count pages across one or many PDFs, instantly in-browser.
PDF Page Size Inspector
See every PDF page size, orientation and paper name.
PDF Split by Range
Split one PDF into several files by custom page ranges.
PDF to Images
Turn PDF pages into PNG or JPEG images, in your browser.
PDF to Text
Pull plain text out of any PDF, in your browser.
PDF to Word
Extract a PDF’s text into an editable .docx, privately.
Percentage & VAT Calculator
Percentages, percent change and VAT in one place.
Percentage Calculator
Work out any percentage, change or markup.
Percentage Change Calculator
Find the percent increase or decrease.
Permutations and Combinations
Count nPr, nCr and their repetition variants.
Photo Duotone
Map any photo onto two colours for a bold duotone look.
Physics Unit Converter
Speed, pressure and energy unit conversions.
Pig Latin Translator
Turn English into Pig Latin, instantly.
PIN Generator
Random numeric PINs from a secure source.
PIN Strength Checker
See how guessable your numeric PIN really is.
Pixelate / Redact
Pixelate an image to a mosaic for redaction or effect.
Placeholder Image Generator
Generate sized placeholder images with a label.
Polaroid Frame Generator
Add a classic white polaroid border and handwritten caption.
Pomodoro Timer
Focus in 25-minute sprints with smart breaks.
Port Number Lookup
Find the service behind a TCP/UDP port.
Power Converter
Convert watts, horsepower, BTU/h and more.
PPI Density Calculator
Find a screen's pixels-per-inch and dot pitch.
Pregnancy Due Date Estimator
Estimate your due date and current week.
Pregnancy Weight Gain Calculator
Check pregnancy weight gain against IOM guidelines.
Present Value Calculator
Discount future money back to what it is worth today.
Prime Factorization
Break any whole number into its prime factors.
Prime Number Checker
Test for primes, find the next prime, or list them.
Profit Margin Calculator
Turn cost and price into margin and markup.
Properties to JSON Converter
Convert Java .properties to JSON and back.
Proportion Solver
Solve a : b = c : d for the missing term.
Protect / Unlock PDF
Remove edit restrictions or mark ownership, in-browser.
Protein Intake Calculator
Estimate your daily protein target.
Punycode Converter
Convert IDN domains to and from xn-- Punycode.
Pythagorean Theorem Calculator
Solve right triangles with a² + b² = c².
QR Code Generator
Create QR codes for URLs, text & Wi-Fi.
QR Code Image Reader
Decode a QR code from an image, privately.
QR Code Reader
Decode a QR image and read its content.
Quadratic Equation Solver
Solve ax² + bx + c = 0 with real or complex roots.
Quarter Finder
Find the calendar or fiscal quarter for any date.
Query String to JSON
Turn a URL query string into clean JSON.
Quoted-Printable Encoder
Encode and decode quoted-printable (RFC 2045) text.
Rail Fence Cipher
Encrypt and decrypt with the zig-zag transposition cipher.
Random Bytes Generator
Cryptographically secure random bytes, any encoding.
Random Color Generator
Generate random colours in hex, RGB and HSL.
Random Date Generator
Generate random dates within any range.
Random Decision Wheel
Let chance pick from your list of options.
Random Emoji Picker
Pick random emoji by category, with or without repeats.
Random Group Maker
Split a list of names into fair random teams.
Random IP Address Generator
Generate random IPv4 and IPv6 addresses instantly.
Random Line Picker
Pick random lines from any list, fairly.
Random Name Generator
Random first and last names on demand.
Random Number Generator
Random integers in any range, with optional uniqueness.
Random Palette Generator
Generate random colour palettes with harmony schemes.
Random Quote Generator
Get a fresh inspiring quote on demand.
Random Salt Generator
Generate cryptographic salts in hex or Base64.
Random String Generator
Random strings from any alphabet you choose.
Random Team Picker
Split a name list into fair, random teams.
Ratio Calculator
Simplify ratios and solve proportions instantly.
Readability Keyword Density
Score reading ease and check keyword density.
README Generator
Build a clean README.md from a few project fields.
Regex Cheatsheet
Searchable regex reference with a live tester.
Regex Tester
Test regular expressions with live matches & groups.
Remove Diacritics
Strip accents from text to plain ASCII letters.
Remove Duplicate Lines
Strip repeated lines and count what was removed.
Remove Empty Lines
Delete blank lines and tidy up spacing.
Remove EXIF Data
Strip EXIF, GPS & camera metadata from JPEGs privately.
Remove Line Breaks
Strip line breaks from text, three ways.
Remove Punctuation
Strip punctuation marks from any text instantly.
Resize / Crop Image
Resize images to exact pixels in your browser.
Resolution Converter
Pixels to aspect ratio, megapixels and standards.
Retirement Savings Calculator
Project your nest egg from contributions and returns.
Reverse Word Order
Flip the order of words in any text.
RGB to CMYK Converter
Turn screen RGB colours into print CMYK values.
Ring Size Converter
Convert ring sizes between US, UK, EU and Japan.
Robots.txt Generator
Create a valid robots.txt for crawlers.
ROI Calculator
Measure return on investment and annualize it.
Roman Numeral Converter
Numbers ⇄ Roman numerals, 1 to 3999.
Root Calculator
Find the square, cube or any nth root of a number.
Rotate / Flip Image
Rotate to any angle and flip images in your browser.
Rotate / Reorder PDF
Rotate pages or change their order, in your browser.
Round Corners Tool
Add smooth rounded corners to any image in-browser.
Rounding Calculator
Round numbers your way, to any precision.
RSA Keypair Generator
Create RSA public and private keys in your browser.
Rule of 72 Calculator
Estimate how long it takes your money to double.
Running Pace Calculator
Pace per km and mile, plus speed, from a run.
Salary Converter
Convert pay between hourly, monthly and yearly.
Sales Tax Calculator
Add or remove sales tax / VAT from any price.
Savings Goal Calculator
Find the monthly saving to hit your target.
Scientific Notation Converter
Convert numbers to scientific, E and decimal form.
Screen Resolution Detector
See your screen size, DPR and aspect ratio.
Screenshot Beautifier
Wrap screenshots in a gradient, padding and rounded corners.
Secure Random Token
Generate cryptographically strong random tokens.
Security Headers Builder
Generate HTTP security headers for any server.
Semantic Version Bumper
Bump a semver string by major, minor, patch or prerelease.
Sentence Splitter
Break a paragraph into one sentence per line.
SHA-3 Hash
SHA3-224/256/384/512 hashes in your browser.
Shades & Tints Generator
Generate shade and tint ramps from one colour.
Shields Badge Generator
Build shields.io badge URLs, Markdown and HTML.
Shoe Size Converter
Convert shoe sizes between US, UK, EU and cm.
Simple Interest Calculator
Work out flat, non-compounding interest fast.
Sleep Cycle Calculator
Find the best time to sleep or wake up.
Slogan Generator
Catchy slogans for any brand or keyword.
Slope Calculator
Find the slope between two points instantly.
Slugify
Turn any title into a clean URL slug.
Small Caps Generator
Turn text into ꜱᴍᴀʟʟ ᴄᴀᴘs you can paste anywhere.
Smoking Cost Calculator
See what smoking really costs over time.
Sort Lines
Alphabetical or numeric line sorting, with dedupe.
Spinner Wheel Picker
Spin a wheel to pick a random winner.
Split PDF
Break one PDF into several smaller files.
Spritesheet Slicer
Cut a spritesheet into individual frame PNGs.
SQL Formatter
Pretty-print messy SQL into readable queries.
SQL Minifier
Compress SQL into one compact line.
Standard Deviation Calculator
Get mean, median, variance and standard deviation.
Stock Average Calculator
Find your weighted average share cost.
Stopwatch Countdown
A precise stopwatch and countdown timer with laps.
Strikethrough Text Generator
Make s̶t̶r̶i̶k̶e̶t̶h̶r̶o̶u̶g̶h̶ text you can paste anywhere.
Strip HTML
Convert HTML markup to clean plain text.
Strong Password Tips
Check a password against strong-password best practices.
Subnet Calculator
Network, broadcast, host range and mask details.
Subresource Integrity Hash
Generate SRI integrity hashes for scripts and styles.
SVG Optimizer
Shrink SVG markup losslessly in your browser.
SVG to PNG
Rasterise SVG vectors into crisp PNGs at any scale.
Tailwind Palette Generator
Build a 50–950 Tailwind colour scale from one hex.
Tally Counter
A simple click counter with adjustable step.
TDEE Calculator
Find your daily calories to cut, maintain or bulk.
Test Card Numbers
Sandbox credit-card numbers for payment testing.
Tetradic Color Scheme
Generate a four-colour rectangle palette from one hex.
Text Diff
Compare two texts line by line and see the changes.
Text on Image / Meme
Add classic top and bottom meme text to any image.
Text Repeater
Repeat any text N times with a separator.
Text Reverse & ROT13
Reverse characters or lines, or apply ROT13.
Text Snippet Manager
Save, search and reuse text snippets in your browser.
Time Adder Subtractor
Add or subtract hours, minutes and seconds from a time.
Time Ago Formatter
Turn any date into "3 hours ago" or "in 2 days".
Time Duration Calculator
Find the elapsed time between two clock times.
Timezone Converter
Convert a time between any two time zones.
Tip & Bill Splitter
Split a bill and tip evenly across the table.
To-Do List
A quick, private checklist in your browser.
TOML to JSON
Convert TOML config into clean JSON instantly.
Torque Converter
Convert between N·m, lb·ft and more.
TOTP Code Generator
Turn a Base32 secret into a live 2FA code.
TOTP Secret Generator
Create random Base32 TOTP secrets and otpauth URIs.
Triadic Color Scheme
Three balanced hues, 120° apart on the wheel.
Triangle Solver
Solve any triangle from sides and angles.
Truncate Text
Shorten text to a character or word limit.
Twitter Card Preview
Preview your twitter:card meta tags before you share.
ULID Generator
Create sortable, timestamp-ordered ULIDs in your browser.
Unicode Character Explorer
Inspect code points, escapes and UTF-8 bytes per character.
Unicode Character Inspector
Inspect code points, decimals and UTF-8 bytes.
Unicode Escape Converter
Convert text to \uXXXX escapes and back.
Unit Converter
Length, mass, area, volume and temperature.
Unit Price Comparison
Find the best value by price per unit.
Unix Timestamp Converter
Unix time ⇄ human dates, seconds or millis.
Upside-Down Text
Flip text into upside-down unicode lookalikes.
URL Encode / Decode
Percent-encode and decode URLs and query params.
URL Parser
Break a URL into its parts and query params.
User-Agent Parser
Decode a User-Agent into browser, OS and device.
Username Generator
Create memorable, brandable usernames instantly.
UTF-8 Byte Inspector
See how text becomes UTF-8 bytes, character by character.
UTM Campaign URL Builder
Add UTM tracking parameters to any link.
UUID Generator
Generate RFC-4122 v4 UUIDs in bulk.
UUID v5 Generator
Deterministic name-based UUIDs from SHA-1.
Vaporwave Aesthetic Text
Turn text into ｆｕｌｌ-ｗｉｄｔｈ aesthetic letters.
vCard QR Code Generator
Make a scannable contact-card QR code.
Vigenere Cipher
Encrypt and decrypt with a keyword.
VO2 Max Estimator
Estimate your aerobic fitness from a simple test.
Volume Calculator
Find the volume of cubes, boxes, spheres and more.
Vowel and Consonant Counter
Count vowels, consonants and letters instantly.
Waist to Hip Ratio
Measure body-fat distribution and health risk instantly.
Water Intake Calculator
Estimate how much water to drink each day.
Watermark PDF
Stamp diagonal text watermarks across a PDF, privately.
Week Number Calculator
Find the ISO-8601 week number for any date.
Whiteboard
A quick freehand sketch pad in your browser.
Whitespace Cleaner
Trim, collapse spaces and strip blank lines.
Whitespace Visualizer
Reveal hidden spaces, tabs and newlines.
WiFi QR Code Generator
Share your WiFi with a scannable QR code.
Word & Character Counter
Words, characters, lines, sentences, reading time.
Word Frequency Counter
Rank the most common words in any text.
Word to PDF
Convert a .docx document’s text to PDF, privately.
Word Wrap Tool
Wrap text to a fixed column width on word boundaries.
Words to Number
Turn number words into digits instantly.
Working Hours Calculator
Net hours worked from clock-in, clock-out and breaks.
XML Formatter Validator
Pretty-print, minify and validate XML instantly.
XML Minifier
Shrink XML by stripping whitespace and comments.
XML Sitemap Generator
Build a valid sitemap.xml from your URLs.
XML to CSV
Turn record-style XML into a CSV table.
XOR Cipher
Encrypt and decrypt text with a repeating-key XOR.
YAML to TOML
Convert YAML config to TOML in the browser.
YAML Validator
Check YAML syntax with line-by-line errors.
Yes or No Decision Maker
Let chance settle it with a random yes or no.
Zalgo Text Generator
Turn plain text into glitchy cursed Zalgo.
Zodiac Sign Finder
Find your star sign and Chinese zodiac from a birthday.
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