Developer Tools
Formatters, validators, encoders, decoders, generators, and converters — all running entirely in your browser. Nothing you paste here is sent to a server.
JSON (9)
JSON Formatter
Pretty-print and indent minified or messy JSON.
JSON Validator
Check whether a JSON document is syntactically valid.
XML to JSON
Convert an XML document to JSON.
JSON to XML
Convert a JSON object to XML.
YAML to JSON
Convert a YAML document to JSON.
JSON Escape / Unescape
Escape text for embedding in a JSON string, or unescape it back.
JSON to Excel
Convert a JSON array of objects into a downloadable Excel file.
JSON Path Tester
Test a JSONPath expression against JSON.
JSON/XML Tree Viewer
Browse JSON or XML as a collapsible tree.
Encoding (27)
Base64 Encoder
Encode text to Base64.
Base64 Decoder
Decode a Base64 string back to text.
URL Encoder
Percent-encode text for safe use in a URL.
URL Decoder
Decode a percent-encoded URL back to readable text.
Text to Binary
Convert text to binary, or binary back to text.
ASCII to Decimal
Convert text to its decimal ASCII character codes.
Decimal to ASCII
Convert decimal ASCII character codes back to text.
ASCII to Hex
Convert text to its hexadecimal byte representation.
ASCII to Text
Convert ASCII character codes back to readable text.
Text to ASCII
Convert text to its ASCII character codes.
Text to Hex
Convert text to its hexadecimal representation.
Hex to ASCII
Convert hexadecimal byte values back to text.
Hex to Text
Convert hexadecimal byte values back to readable text.
Binary to Decimal
Convert a binary number to decimal.
Binary to Hexadecimal
Convert a binary number to hexadecimal.
Binary to Octal
Convert a binary number to octal.
Decimal to Binary
Convert a decimal number to binary.
Decimal to Hex
Convert a decimal number to hexadecimal.
Decimal to Octal
Convert a decimal number to octal.
Hex to Decimal
Convert a hexadecimal number to decimal.
Hexadecimal to Binary
Convert a hexadecimal number to binary.
Hexadecimal to Octal
Convert a hexadecimal number to octal.
Octal to Hexadecimal
Convert an octal number to hexadecimal.
Word to Number Converter
Convert English number words into a numeral.
Number to Words Converter
Convert a numeral into English number words.
Roman Numeral Converter
Convert numbers to Roman numerals, or Roman numerals back to numbers.
HTML Encoder / Decoder
Encode text to HTML entities, or decode HTML entities back to text.
Text (9)
Word Counter
Count words, characters, sentences, and paragraphs.
Case Converter
Convert text to UPPERCASE, lowercase, Title Case, camelCase, and more.
Remove Duplicate Lines
Remove repeated lines from a list, keeping the first occurrence of each.
Text Sorter
Sort lines of text alphabetically, numerically, or randomly.
Find & Replace
Find text and replace it with new content.
Reverse Text
Reverse the order of characters in your text.
Upside Down Text Generator
Flip your text upside down using look-alike Unicode characters.
Text Repeater
Repeat a block of text a chosen number of times.
Morse Code Translator
Translate text to Morse code, or Morse code back to text.
Generators (34)
UUID Generator
Generate random version 4 UUIDs.
Password Generator
Generate a random password with a configurable length and character set.
Lorem Ipsum Generator
Generate placeholder Lorem Ipsum paragraphs.
What is my Browser
See your browser, OS, screen, and locale details.
Open All URLs
Open a list of URLs in new tabs at once.
Random Name Picker
Randomly pick one or more names from a list.
Random Letter Generator
Generate random letters.
Random IP Address Generator
Generate random IPv4 or IPv6 addresses.
Random Time Generator
Generate random times of day.
Random CSV Generator
Generate a CSV of random alphanumeric values.
Random TSV Generator
Generate a TSV of random alphanumeric values.
Random Date Generator
Generate random calendar dates within a year range.
Random JSON Generator
Generate an array of random sample JSON objects.
Random Prime Generator
Generate a random prime number within a range.
Random Bitmap Generator
Generate an image of random-colored pixels.
Text Lines Shuffler
Shuffle the lines of a block of text into random order.
MAC Address Generator
Generate random MAC addresses.
Random Hex Generator
Generate a random hexadecimal string.
Random String Generator
Generate a random string from chosen character sets.
Random Fraction Generator
Generate random fractions in simplest form.
Random Integer Range Generator
Generate random whole numbers within a range.
Random Binary Generator
Generate a random binary string.
Random Byte Generator
Generate random bytes as space-separated decimal values.
Random Decimal Generator
Generate random decimal numbers within a range.
Random Alpha Numeric Generator
Generate a random alphanumeric string.
HTML Table Generator
Generate an HTML table from comma-separated rows.
HTML Link Code Generator
Generate an HTML anchor tag for a URL.
Share Link Generator
Build a pre-filled social share link for a URL.
Redirect Generator
Generate a meta-refresh, JavaScript, or .htaccess redirect snippet.
QR Code Generator
Generate a downloadable QR code for any text or URL.
Google Review QR Generator
Generate a QR code that opens your Google review page.
WhatsApp Link Generator
Build a wa.me link that opens a chat with a pre-filled message.
Payment Reminder Generator
Generate a friendly payment reminder message.
Graphing Calculator
Plot a mathematical expression as a graph.
Color (20)
HEX to RGB
Convert a HEX color code to RGB.
RGB to HEX
Convert an RGB color value to HEX.
Color Picker
Pick a color and see its HEX, RGB, and HSL values.
HEX to HSV
Convert a HEX color code to HSV.
HEX to CMYK
Convert a HEX color code to CMYK.
CMYK to HEX
Convert CMYK percentages to a HEX color code.
CMYK to RGB
Convert CMYK percentages to RGB.
RGB to CMYK
Convert RGB values to CMYK.
HSV to RGB
Convert HSV values to RGB.
RGB to HSV
Convert RGB values to HSV.
CMYK to HSV
Convert CMYK percentages to HSV.
HSV to CMYK
Convert HSV values to CMYK.
HSV to HEX
Convert HSV values to a HEX color code.
CMYK to Pantone
Find the nearest PANTONE match for a CMYK color.
HEX to Pantone
Find the nearest PANTONE match for a HEX color.
RGB to Pantone
Find the nearest PANTONE match for an RGB color.
Pantone to CMYK
Convert a PANTONE color name to CMYK.
Pantone to HEX
Convert a PANTONE color name to a HEX code.
Pantone to RGB
Convert a PANTONE color name to RGB.
Pantone to HSV
Convert a PANTONE color name to HSV.
Minifiers (3)
Cryptography (15)
Hash Generator
Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes of text.
Password Strength Checker
Check a password against common strength heuristics.
Online MD5 Generator
Generate the MD5 hash of text.
HMAC Generator
Generate an HMAC of a message using a secret key.
CRC32 Generator
Compute the CRC-32 checksum of text.
CRC16 Generator
Compute the CRC-16 checksum of text.
SHA224 Generator
Compute the SHA-224 hash of text.
SHA-512/224 Generator
Compute the SHA-512/224 hash of text.
SHA-512/256 Generator
Compute the SHA-512/256 hash of text.
SHA3-224 Generator
Compute the SHA3-224 hash of text.
SHA3-256 Generator
Compute the SHA3-256 hash of text.
SHA3-384 Generator
Compute the SHA3-384 hash of text.
SHA3-512 Generator
Compute the SHA3-512 hash of text.
Shake-128 Generator
Compute a SHAKE-128 extendable-output hash of text.
Shake-256 Generator
Compute a SHAKE-256 extendable-output hash of text.
Code Utilities (18)
XML Formatter
Pretty-print minified or messy XML.
SQL Formatter
Break a single-line SQL query onto readable, indented lines.
Code Beautifier
Auto-indent minified HTML, CSS, or JavaScript.
Regex Tester
Test a regular expression against a block of text and see every match.
Code Difference Comparison Tool
Compare two blocks of text or code line by line.
REM to PX Converter
Convert between REM and PX using a chosen base font size.
Unix Epoch Time Converter
Convert a Unix timestamp to a date, or a date to a Unix timestamp.
CSS to LESS
Mechanically nest flat CSS selectors into LESS syntax.
Hostname to IP
Resolve a hostname to its IP address.
IP to Hostname
Reverse-resolve an IP address to its hostname.
DNS Lookup
Look up DNS records for a hostname.
ASCII Table
Browse or search the ASCII character table.
IEEE-754 Analysis
Break a number down into its IEEE-754 sign, exponent, and mantissa.
Webcam Test
Check whether your webcam works and see its resolution.
URI Template Parser
Expand an RFC 6570 URI template with variables.
HTML Viewer
Render pasted HTML in a sandboxed preview.
Online Pixel Ruler
Measure anything on your screen in pixels.
Screen Resolution Tester
Preview a URL at common device screen resolutions.
Images (13)
Dummy Image Placeholder Generator
Generate a placeholder image of any size, right in your browser.
EXIF Data Viewer
View the EXIF metadata embedded in a JPEG photo.
EXIF Data Remover
Strip EXIF metadata from a photo before sharing it.
Image Compressor
Compress an image to reduce its file size.
Image Resizer
Resize an image to exact dimensions.
JPG to PNG
Convert a JPG image to PNG format.
Watermark Image
Add a text watermark to an image.
Image to Base64
Convert an image into a Base64-encoded string.
WebP Converter
Convert an image to WebP format.
Base64 to Image
Decode a Base64 string back into a viewable, downloadable image.
PNG to JPG Converter
Convert a PNG image to JPG format.
Text to Image Converter
Render text onto a downloadable PNG image.
Crop Image Online
Crop an image to a chosen rectangle.
Validators (7)
Card Validator
Check a card number against the Luhn checksum and detect its network.
YAML Validator
Check whether a YAML document is well-formed.
XML Validator
Check whether an XML document is well-formed.
CSS Validator
Run a best-effort sanity check over CSS.
JavaScript Validator
Check JavaScript for syntax errors, without running it.
XPath Evaluator
Evaluate an XPath expression against an XML document.
XSD Validation
Validate an XML document against an XSD schema.
SEO Tools (16)
Meta Tag Generator
Generate title and meta description tags for a page.
Robots.txt Generator
Generate a robots.txt file.
Schema Markup Generator
Check pasted JSON-LD schema markup for commonly-required fields.
Open Graph Generator
Generate Open Graph meta tags for social sharing previews.
Twitter Card Generator
Generate Twitter/X Card meta tags for social sharing previews.
Image Size Analyzer
Check the pixel dimensions of an image URL.
On Page SEO Checker
Check a page's title, meta description, robots tag, canonical, and H1 count.
Sitemap Validator
Check that an XML sitemap is well-formed and counts its URLs.
Canonical URL Checker
Check the canonical tag a page declares.
Hreflang Checker
List the hreflang tags a page declares for international targeting.
Page Size Checker
Check the byte size of a page's HTML document.
Redirect Checker
Trace the redirect chain for a URL.
Broken Link Checker
Check the first links on a page for broken (4xx/5xx) responses.
Code-to-Text Ratio Checker
Check the ratio of visible text to total HTML size for a page.
Search Engine Spider Simulator
See a page's title and text as a non-JavaScript search crawler would.
Domain Age Checker
Check how long ago a domain was registered.
PDF Tools (11)
Merge PDF
Combine two or more PDF files into one.
Split PDF
Extract a page range from a PDF into a new file.
Rotate PDF
Rotate every page of a PDF.
Add PDF Page Number
Add page numbers to every page of a PDF.
Compress PDF
Re-save a PDF to reduce its file size.
PDF to JPG
Convert the first page of a PDF to a JPG image.
PDF to PNG
Convert the first page of a PDF to a PNG image.
JPG to PDF
Convert a JPG image to a one-page PDF.
PNG to PDF
Convert a PNG image to a one-page PDF.
HTML to PDF
Convert the visible text of pasted HTML into a PDF.
Invoice Generator
Generate a simple downloadable PDF invoice.