JSON Formatter JSON Validator JSON Minifier JSON Diff JSON to CSV JSON to YAML JSON Sort Keys JSON Viewer JSON Escape/Unescape JSON to XML XML to JSON YAML to JSON JSON to TypeScript JSON to PHP Array JSON Stringify See all JSON tools →

CSV to SQL CSV to Markdown CSV Diff CSV to JSON CSV to XML CSV Deduplicator See all CSV tools →

Sort & Dedupe Lines Slug Generator Case Converter Character & Word Counter Text Diff Regex Tester Find & Replace Reverse Text Text Repeater Remove Duplicate Lines Whitespace Remover Remove Line Breaks Morse Code Translator ROT13 / Caesar Cipher NATO Phonetic Alphabet LLM Token Counter Word Frequency Counter Add Line Numbers Remove Accents Strip HTML Tags Extract Emails Extract URLs Remove Emojis Count Occurrences Remove Extra Blank Lines Remove Duplicate Words Word Wrap See all Text tools →

URL Parser HTML Entity Encoder HTML Entity Decoder Base64 Encoder Base64 Decoder URL Encoder URL Decoder JWT Decoder JWT Encoder Text to Hex Hex to Text Text to Binary Binary to Text Base32 Encode Base32 Decode User Agent Parser HTTP Status Codes MIME Type Lookup See all Encoding tools →

Hash Generator MD5 Hash Generator SHA-256 Hash Generator SHA-512 Hash Generator SHA-1 Hash Generator HMAC Generator See all Hash tools →

Markdown to HTML HTML Formatter XML Formatter SQL Formatter YAML Formatter CSS Formatter CSS Minifier JavaScript Formatter See all Formatters tools →

PX to REM Converter Data Size Converter Unix Timestamp Converter Number Base Converter Roman Numeral Converter Temperature Converter Length Converter Weight Converter Speed Converter Area Converter Volume Converter Time Duration Converter Angle Converter Pressure Converter Energy Converter Number to Words Cron Expression Parser Percentage Calculator Aspect Ratio Calculator Average Calculator Hex to Binary Binary to Hex Hex to Decimal Decimal to Hex Binary to Decimal Decimal to Binary Kilometers to Miles Miles to Kilometers Centimeters to Inches Inches to Centimeters Feet to Meters Meters to Feet Celsius to Fahrenheit Fahrenheit to Celsius Kilograms to Pounds Pounds to Kilograms MPH to KM/H KM/H to MPH See all Converters tools →

Color Converter Color Contrast Checker UUID Generator Lorem Ipsum Generator Password Generator Passphrase Generator Username Generator CSS Gradient Generator Box Shadow Generator Color Palette Generator Cubic Bezier Generator QR Code Generator Meta Tag Generator Border Radius Generator Glassmorphism Generator SVG Blob Generator Placeholder Image Generator See all Generators tools →

Guides Pricing

All developer tools

Every SnapTools utility in one place — formatters, converters, encoders, hashes, and generators. All free, all in your browser, no login required.

JSON tools

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JSON

Format and beautify JSON online for free. Paste your JSON to get clean, readable, indented output instantly. Works with any valid JSON.

JSON

Validate JSON online instantly. Check your JSON for syntax errors with detailed error messages and line numbers. Free, no registration required.

JSON

Minify and compress JSON online for free. Remove whitespace and reduce file size instantly. Perfect for production APIs and storage optimization.

JSON

Compare two JSON objects and highlight the differences. Find added, removed, and changed keys instantly. Free JSON diff tool online.

JSON

Convert JSON arrays to CSV format online for free. Transform nested JSON data into spreadsheet-ready CSV with one click.

JSON

Convert JSON to YAML format online for free. Transform JSON configuration files to human-readable YAML instantly.

JSON

Sort JSON object keys alphabetically online for free. Recursively order keys A-Z or Z-A to normalise JSON for diffs and version control. In your browser.

JSON

View and explore JSON online for free in an interactive, collapsible tree. Search, copy any value or JSONPath, and inspect large JSON in your browser.

JSON

JSON Escape/Unescape

Escape text for JSON strings and unescape it back online for free. Handle quotes, backslashes, newlines, and unicode safely in your browser.

JSON

Convert JSON to XML online for free. Transform JSON objects and arrays into clean, indented XML instantly in your browser. No registration required.

JSON

Convert XML to JSON online for free. Turn XML documents — elements, attributes, and nested nodes — into clean JSON instantly in your browser.

JSON

Convert YAML to JSON online for free. Turn config files, Kubernetes manifests, and CI pipelines into clean, valid JSON instantly in your browser.

JSON

JSON to TypeScript

Convert JSON to TypeScript interfaces online for free. Generate typed interfaces from any JSON object or array instantly in your browser. No registration.

JSON

JSON to PHP Array

Convert JSON to a PHP array online for free. Turn any JSON object or array into PHP short-array syntax instantly in your browser. No registration required.

JSON

Stringify JSON online for free. Escape a JSON document into a single-line string literal, ready to embed in code, instantly in your browser.

CSV tools

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CSV

Convert CSV to SQL INSERT statements online for free. Generate ready-to-run INSERT queries from spreadsheet data instantly in your browser.

CSV

CSV to Markdown

Convert CSV to a Markdown table online for free. Turn spreadsheet data into a GitHub-ready Markdown table instantly in your browser.

CSV

Compare two CSV files and find differences. Highlight added, removed, and changed rows. Free online CSV diff tool.

CSV

Convert CSV files to JSON format online for free. Transform spreadsheet data to JSON arrays or objects with custom key mapping.

CSV

Convert CSV data to XML format online for free. Transform tabular data into structured XML with customizable element names.

CSV

CSV Deduplicator

Remove duplicate rows from CSV files online for free. Find and eliminate duplicate entries by any column combination.

Text tools

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TEXT

Sort & Dedupe Lines

Sort lines alphabetically and remove duplicate lines online for free. Trim whitespace, ignore case, and clean up lists instantly in your browser.

TEXT

Generate clean URL slugs from any text online for free. Lowercase, hyphen- or underscore-separated, accent-folded, SEO-friendly slugs instantly.

TEXT

Convert text case online for free. Transform to camelCase, PascalCase, snake_case, kebab-case, UPPER CASE, lower case, and Title Case instantly.

TEXT

Character & Word Counter

Count characters, words, sentences, and paragraphs online for free. Real-time character counter with reading time estimate.

TEXT

Compare two text blocks and highlight the differences online for free. Line-by-line text diff with color-coded changes.

TEXT

Test regular expressions online for free. Match, extract, and replace with regex patterns, with live results and match highlighting.

TEXT

Find and replace text online for free. Bulk text replacement with regex support, case sensitivity options, and instant preview.

TEXT

Reverse text online for free — flip characters, words, or lines backwards instantly. Create mirror/backwards text in your browser. No registration.

TEXT

Repeat text multiple times online for free. Duplicate a word, line, or phrase N times with an optional separator instantly in your browser.

TEXT

Remove Duplicate Lines

Remove duplicate lines from text online for free. Keep the first occurrence of each line, optionally ignoring case and whitespace. Instant, in your browser.

TEXT

Whitespace Remover

Remove extra whitespace online for free. Collapse repeated spaces, trim lines, or strip all whitespace from text instantly in your browser.

TEXT

Remove Line Breaks

Remove line breaks and newlines from text online for free. Join multiple lines into one, replacing breaks with a space or any string. Instant, in your browser.

TEXT

Morse Code Translator

Translate text to Morse code and back online for free. Encode letters, numbers, and punctuation to dots and dashes, or decode Morse instantly in your browser.

TEXT

ROT13 / Caesar Cipher

Encode and decode ROT13 and Caesar cipher text online for free. Shift letters by any amount (ROT13 is its own inverse) instantly in your browser.

TEXT

NATO Phonetic Alphabet

Convert text to the NATO phonetic alphabet online for free. Spell words as Alfa, Bravo, Charlie… for clear voice communication. Instant, in your browser.

TEXT

LLM Token Counter

Count LLM tokens online for free. See how many GPT-3.5 / GPT-4 tokens (cl100k_base) your prompt uses, plus characters and words, instantly in your browser.

TEXT

Word Frequency Counter

Count word frequency online for free. See how often each word appears in your text, sorted most-common first, instantly in your browser.

TEXT

Add Line Numbers

Add line numbers to any text online for free. Prefix each line with a sequential number and custom separator instantly in your browser.

TEXT

Remove accents and diacritics from text online for free. Convert café to cafe, résumé to resume, and more instantly in your browser.

TEXT

Strip HTML Tags

Strip HTML tags from text online for free. Remove all markup and keep the readable text content instantly in your browser. No registration required.

TEXT

Extract email addresses from any text online for free. Pull out and de-duplicate all emails from a block of text instantly in your browser.

TEXT

Extract URLs and links from any text online for free. Pull out and de-duplicate all http/https links from a block of text instantly in your browser.

TEXT

Remove emojis from text online for free. Strip all emoji and pictographic symbols from a block of text instantly in your browser. No registration required.

TEXT

Count Occurrences

Count how many times a word or phrase appears in text online for free. Case-sensitive or case-insensitive substring counting instantly in your browser.

TEXT

Remove Extra Blank Lines

Remove extra blank lines from text online for free. Collapse multiple consecutive empty lines into one instantly in your browser. No registration required.

TEXT

Remove Duplicate Words

Remove duplicate words from text online for free. Keep the first occurrence of each word, optionally ignoring case, instantly in your browser.

TEXT

Word-wrap text online for free. Break long lines at a chosen column width, wrapping on spaces, instantly in your browser. No registration required.

Encoding tools

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ENCODING

Parse a URL online for free. Break any URL into scheme, host, port, path, query parameters, and fragment instantly in your browser.

ENCODING

HTML Entity Encoder

Encode text to HTML entities online for free. Convert <, >, &, quotes, and accented characters to safe HTML entities instantly. Prevent XSS.

ENCODING

HTML Entity Decoder

Decode HTML entities back to plain text online for free. Convert named and numeric entities like < and © to characters instantly.

ENCODING

Encode text or files to Base64 online for free. Supports standard, URL-safe, and MIME-wrapped output instantly.

ENCODING

Decode Base64 strings back to plain text online for free. Supports standard and URL-safe Base64 variants instantly.

ENCODING

Percent-encode URLs and strings online for free. Convert special characters to %XX format for safe use in URLs and query parameters.

ENCODING

Decode percent-encoded URL strings back to readable text online for free. Instantly convert %XX sequences to characters.

ENCODING

Decode and inspect JSON Web Tokens (JWT) online for free. View header, payload, and signature without any libraries.

ENCODING

Build and sign a JSON Web Token (JWT) online for free. Enter a payload and secret to generate an HS256/384/512-signed token instantly.

ENCODING

Convert text to hexadecimal online for free. Turn any string into its UTF-8 hex byte representation instantly in your browser. No registration required.

ENCODING

Convert hexadecimal to text online for free. Decode UTF-8 hex bytes back into readable text instantly in your browser. Accepts spaces, colons, and 0x.

ENCODING

Convert text to binary online for free. Turn any string into 8-bit binary (UTF-8 bytes) instantly in your browser. No registration required.

ENCODING

Convert binary to text online for free. Decode 8-bit binary (UTF-8 bytes) back into readable text instantly in your browser. Ignores spaces and separators.

ENCODING

Encode text to Base32 online for free. Convert any string to RFC 4648 Base32 instantly in your browser. No registration required.

ENCODING

Decode Base32 to text online for free. Convert RFC 4648 Base32 back into readable text instantly in your browser. No registration required.

ENCODING

User Agent Parser

Parse a User-Agent string online for free. Detect the browser, engine, operating system, and device from any UA string instantly in your browser.

ENCODING

HTTP Status Codes

Look up HTTP status codes online for free. Get the name and class of any status code (200, 301, 404, 500…) instantly in your browser.

ENCODING

MIME Type Lookup

Look up MIME types online for free. Find the MIME type for any file extension, or the extensions for a MIME type, instantly in your browser.

Hash tools

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HASH

Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512, and CRC32 hashes from any text online for free, all at once. Instant checksums in your browser.

HASH

MD5 Hash Generator

Generate MD5 hashes online for free. Instantly compute MD5 checksums for text strings, perfect for data integrity verification.

HASH

SHA-256 Hash Generator

Generate SHA-256 hashes online for free. Compute cryptographic SHA256 checksums for text instantly, no installation required.

HASH

SHA-512 Hash Generator

Generate SHA-512 hashes online for free. Compute cryptographic SHA512 checksums for text instantly — the 512-bit member of the SHA-2 family.

HASH

SHA-1 Hash Generator

Generate SHA-1 hashes online for free. Compute SHA1 checksums for text strings instantly. Used for checksums, version control, and legacy systems.

HASH

Generate HMAC signatures online for free. Compute HMAC-MD5, HMAC-SHA1, HMAC-SHA256, and HMAC-SHA512 message authentication codes instantly.

Formatter tools

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FORMATTERS

Markdown to HTML

Convert Markdown to HTML online for free. Turn headings, lists, links, tables, and code blocks into clean HTML instantly in your browser.

FORMATTERS

Format and beautify HTML online for free. Pretty-print minified HTML with proper indentation and line breaks instantly.

FORMATTERS

Format and beautify XML online for free. Pretty-print XML with proper indentation and validate XML syntax instantly.

FORMATTERS

Format and beautify SQL queries online for free. Pretty-print SQL with keyword capitalization and proper indentation for readability.

FORMATTERS

Format and beautify YAML online for free. Fix indentation and clean up messy YAML config files instantly, right in your browser.

FORMATTERS

Format and beautify CSS online for free. Pretty-print minified CSS with proper indentation instantly in your browser. No registration required.

FORMATTERS

Minify and compress CSS online for free. Strip comments and whitespace to shrink your stylesheet instantly in your browser. No registration required.

FORMATTERS

JavaScript Formatter

Format and beautify JavaScript online for free. Pretty-print minified JS with proper indentation instantly in your browser. No registration required.

Converter tools

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CONVERTERS

PX to REM Converter

Convert px to rem (and em, pt) online for free. Set your root font size and convert CSS units instantly in your browser. No registration required.

CONVERTERS

Data Size Converter

Convert data sizes between bytes, KB, MB, GB, TB, and PB online for free. Choose binary (1024) or decimal (1000) units. Instant, in your browser.

CONVERTERS

Unix Timestamp Converter

Convert Unix timestamps to dates and back online for free. Epoch to human-readable date, milliseconds, ISO 8601, UTC, and any timezone — instantly.

CONVERTERS

Number Base Converter

Convert numbers between decimal, hexadecimal, binary, and octal online for free. Instant base conversion with step-by-step breakdown.

CONVERTERS

Roman Numeral Converter

Convert between Arabic numbers and Roman numerals online for free. Supports numbers 1–3999 with instant bidirectional conversion.

CONVERTERS

Temperature Converter

Convert temperature between Celsius, Fahrenheit, and Kelvin online for free. Instant, accurate conversions in your browser. No registration required.

CONVERTERS

Length Converter

Convert length and distance between metres, feet, inches, kilometres, miles, and more online for free. Instant conversions in your browser.

CONVERTERS

Weight Converter

Convert weight and mass between kilograms, pounds, ounces, grams, stones, and tonnes online for free. Instant conversions in your browser.

CONVERTERS

Speed Converter

Convert speed between miles per hour, kilometres per hour, metres per second, feet per second, and knots online for free. Instant conversions.

CONVERTERS

Convert area between square metres, square feet, acres, hectares, square miles, and more online for free. Instant conversions in your browser.

CONVERTERS

Volume Converter

Convert volume between litres, millilitres, US gallons, cups, pints, quarts, and tablespoons online for free. Instant conversions in your browser.

CONVERTERS

Time Duration Converter

Convert time durations between seconds, minutes, hours, days, weeks, months, and years online for free. Instant conversions in your browser.

CONVERTERS

Angle Converter

Convert angles between degrees, radians, gradians, arcminutes, arcseconds, and turns online for free. Instant conversions in your browser.

CONVERTERS

Pressure Converter

Convert pressure between bar, PSI, atmospheres, pascals, kilopascals, and mmHg online for free. Instant conversions in your browser.

CONVERTERS

Energy Converter

Convert energy between joules, kilojoules, calories, kilocalories, watt-hours, kilowatt-hours, and BTU online for free. Instant conversions.

CONVERTERS

Number to Words

Convert numbers to words online for free. Spell out any number in English — including decimals and negatives — instantly in your browser. No registration.

CONVERTERS

Cron Expression Parser

Parse and explain cron expressions online for free. Turn a 5-field cron schedule into a plain-English description instantly in your browser. No registration.

CONVERTERS

Percentage Calculator

Calculate percentages online for free. Find X% of a number, what percent one number is of another, and percentage increase or decrease instantly.

CONVERTERS

Aspect Ratio Calculator

Calculate aspect ratios online for free. Get the simplified ratio like 16:9, and resize width or height while keeping the ratio. Instant, in your browser.

CONVERTERS

Average Calculator

Calculate the average of a list of numbers online for free. Get the mean, median, mode, sum, min, max, and count instantly in your browser.

CONVERTERS

Convert hexadecimal to binary online for free. Paste a hex value and get its binary representation instantly in your browser. No registration.

CONVERTERS

Convert binary to hexadecimal online for free. Paste a binary value and get its hex representation instantly in your browser. No registration.

CONVERTERS

Convert hexadecimal to decimal online for free. Paste a hex value and get its decimal (base-10) value instantly in your browser. No registration.

CONVERTERS

Convert decimal to hexadecimal online for free. Paste a decimal number and get its hex value instantly in your browser. No registration required.

CONVERTERS

Binary to Decimal

Convert binary to decimal online for free. Paste a binary value and get its decimal (base-10) value instantly in your browser. No registration.

CONVERTERS

Decimal to Binary

Convert decimal to binary online for free. Paste a decimal number and get its binary representation instantly in your browser. No registration.

CONVERTERS

Kilometers to Miles

Convert kilometers to miles online for free. Enter a distance in km and get the exact value in miles instantly in your browser. No registration.

CONVERTERS

Miles to Kilometers

Convert miles to kilometers online for free. Enter a distance in miles and get the exact value in km instantly in your browser. No registration.

CONVERTERS

Centimeters to Inches

Convert centimeters to inches online for free. Enter a length in cm and get the exact value in inches instantly in your browser. No registration.

CONVERTERS

Inches to Centimeters

Convert inches to centimeters online for free. Enter a length in inches and get the exact value in cm instantly in your browser. No registration.

CONVERTERS

Convert feet to meters online for free. Enter a length in feet and get the exact value in metres instantly in your browser. No registration.

CONVERTERS

Convert meters to feet online for free. Enter a length in metres and get the exact value in feet instantly in your browser. No registration.

CONVERTERS

Celsius to Fahrenheit

Convert Celsius to Fahrenheit online for free. Enter a temperature in °C and get the exact value in °F instantly in your browser. No registration.

CONVERTERS

Fahrenheit to Celsius

Convert Fahrenheit to Celsius online for free. Enter a temperature in °F and get the exact value in °C instantly in your browser. No registration.

CONVERTERS

Kilograms to Pounds

Convert kilograms to pounds online for free. Enter a weight in kg and get the exact value in pounds instantly in your browser. No registration.

CONVERTERS

Pounds to Kilograms

Convert pounds to kilograms online for free. Enter a weight in pounds and get the exact value in kg instantly in your browser. No registration.

CONVERTERS

Convert mph to km/h online for free. Enter a speed in miles per hour and get the exact value in km/h instantly in your browser. No registration.

CONVERTERS

Convert km/h to mph online for free. Enter a speed in kilometres per hour and get the exact value in mph instantly in your browser. No registration.

Generator tools

View category →

GENERATORS

Color Converter

Convert colours between HEX, RGB, and HSL online for free. Paste any colour value and get every format instantly, with a live preview. No registration.

GENERATORS

Color Contrast Checker

Check colour contrast online for free. Test any foreground and background pair against WCAG AA and AAA ratios with a live preview and pass/fail results.

GENERATORS

Generate UUID v4 identifiers online for free. Instantly create unique random UUIDs for use in databases, APIs, and distributed systems.

GENERATORS

Lorem Ipsum Generator

Generate Lorem Ipsum placeholder text online for free. Create paragraphs, sentences, or word lists instantly for mockups and design prototypes.

GENERATORS

Password Generator

Generate secure random passwords online for free. Customize length, include uppercase, numbers, and symbols for strong password creation.

GENERATORS

Passphrase Generator

Generate strong memorable passphrases online for free. Combine random words for secure, easy-to-remember passwords using the BIP39 wordlist.

GENERATORS

Username Generator

Generate unique usernames online for free. Create random, alliterative, or techy usernames in PascalCase, lowercase, or uppercase instantly.

GENERATORS

CSS Gradient Generator

Create CSS gradients online for free. Design linear and radial gradients with a live preview and multiple color stops, then copy the CSS instantly.

GENERATORS

Box Shadow Generator

Generate CSS box-shadow online for free. Adjust offset, blur, spread, color, and inset with a live preview, then copy the box-shadow CSS instantly.

GENERATORS

Color Palette Generator

Generate color palettes online for free. Build complementary, analogous, triadic, and shade palettes from a base color, then copy the hex codes.

GENERATORS

Cubic Bezier Generator

Create CSS cubic-bezier easing curves online for free. Drag the curve, preview the animation, and copy the cubic-bezier() timing function instantly.

GENERATORS

QR Code Generator

Generate QR codes online for free. Turn any text, URL, or Wi-Fi details into a QR code with custom colors, then download it as SVG or PNG. No sign-up.

GENERATORS

Meta Tag Generator

Generate SEO meta tags and Open Graph / Twitter card tags online for free. Fill in your title, description, and image, preview the cards, and copy the HTML.

GENERATORS

Border Radius Generator

Generate CSS border-radius online for free. Round each corner independently with sliders and a live preview, then copy the border-radius CSS instantly.

GENERATORS

Glassmorphism Generator

Create glassmorphism CSS online for free. Adjust blur, transparency, and colour with a live frosted-glass preview, then copy the backdrop-filter CSS.

GENERATORS

SVG Blob Generator

Generate organic SVG blob shapes online for free. Adjust complexity and randomness, pick a colour, and copy or download the SVG. No sign-up required.

GENERATORS

Placeholder Image Generator

Generate placeholder images online for free. Set the size, colours, and label, preview instantly, and copy the SVG or a data-URI image tag, or download a PNG.

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