All Tools

Generate random UUID v4 identifiers.

Format, validate, and beautify JSON.

Encode text to Base64 or decode it back.

Create strong, random passwords.

Count words, characters, and reading time.

Convert text between letter cases.

Convert colors between HEX and RGB.

Write Markdown and preview it live.

Turn any text or URL into a QR code.

Convert between Unix timestamps and dates.

Turn any text into a clean URL slug.

Generate placeholder text for mockups.

Clean up lists by removing duplicate or blank lines.

Encode or decode URLs and query strings.

Convert text to and from HTML entities.

Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes.

Check how strong a password is.

Calculate percentages, portions, and percent change.

Test regular expressions against sample text.

Convert between JSON and YAML formats.

Diff two JSON objects and see what changed.

Visually build a CSS box-shadow.

Visually build a CSS border-radius.

Build linear or radial CSS gradients visually.

Convert between binary, octal, decimal, and hex.

Look up what any HTTP status code means.

Look up the MIME type for any file extension.

See one moment in time across many time zones.

Generate random numbers in any range.

Decode a JWT to inspect its header and payload.

Shrink image file size with an adjustable quality slider.

Resize an image to exact width and height.

Convert images between PNG, JPG, and WebP.

Paste or upload SVG code and preview it live.

Visually build CSS flexbox layouts.

Visually build a CSS grid layout.

Generate fluid, responsive CSS clamp() font sizes.

Format and beautify SQL queries.

Generate realistic-looking fake user data for testing.

Generate compact, URL-safe unique IDs.

Build color palettes from a single base color.

Crop an image to a custom region.

Browse JSON as a collapsible tree.

Convert between Markdown and HTML.

Quick reference for common regex syntax.

Compress a SQL query onto one line.

Calculate exact age in years, months, and days.

Calculate the number of days between two dates.

Hash text with bcrypt and verify matches.

Build a frosted-glass CSS effect visually.

Format or compress HTML markup.

Shrink JavaScript by minifying and mangling names.

Format minified or messy JavaScript.

Generate time-based one-time codes from a secret.

Convert length, weight, and temperature units.

A focus timer with work and break cycles.

Calculate network, broadcast, and host range from a CIDR.

Break down a user agent string into browser, OS, and device.

Build and send HTTP requests, and inspect the response.

Compare two blocks of text and highlight differences.

Check WCAG accessibility contrast between two colors.

Calculate body mass index from height and weight.

Split a bill and calculate the tip per person.

Convert between bits, bytes, KB, MB, GB, TB, and PB.

Convert between numbers and Roman numerals.

Build a Markdown table visually.

Break a URL down into its individual parts.

Check a card number's format using the Luhn algorithm.

Generate memorable, word-based passphrases.

Convert between CSV and JSON formats.

Build and understand cron schedule expressions.

Visually design a CSS easing curve.

Visually build a CSS text-shadow.

Generate random hex colors.

Check if a number is prime and see its factors.

Calculate the factorial of any number.

Count how often each word appears in a text.

Quick reference for Markdown syntax.

Calculate monthly loan payments and total interest.

Add a text watermark to an image.

Convert an image to a Base64 data URI and back.

Generate favicon and app icon sizes from one image.

Find and replace text using regular expressions.

Reverse text by character, word, or line.

Check if text reads the same forwards and backwards.

Check if a string is a valid, well-formed UUID.

Preview an image under common color vision deficiencies.

Generate SEO and social sharing meta tags.

Spell out a number in English words.

Convert text to Morse code and back.

Convert text to binary and back.

Encode or decode text with a classic shift cipher.

Turn plain text into stylized Unicode text.

Find the closest named color to any hex value.

Infer a JSON Schema from a sample JSON object.

Shorten text to a character or word limit.

See hidden spaces, tabs, and line breaks in text.

Calculate the specificity of a CSS selector.

Generate scannable barcodes in several formats.