Developer Tools
Free online dev tools
379+ tools to format, convert, encode, generate, validate and transform data — 100% client-side. Nothing leaves your browser.
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Code Formatters & Minifiers
Format, beautify, minify, and tidy your code in one click.
JSON PrettifyFree online tool to format and prettify JSON content.JSON MinifyFree online tool to minify JSON content.JSON StringifyFree online tool to JSON Stringify.HTML PrettifyOnline tool to HTML Prettify.HTML MinifyOnline tool to minify HTML data.HTML FormatterQuickly transform minified or unformatted HTML into readable format.JS BeautifierOnline tool to format and beautify JavaScript.JS MinifyOnline tool to minify JS data.JS ObfuscatorFree online tool to JavaScript Obfuscator.CSS PrettifyOnline tool to CSS Prettify.CSS MinifyFree online tool to reduce the size of CSS files.XML PrettifyOnline tool to XML Prettify.XML MinifyOnline tool to minify XML.XML FormatterFormat, edit, view, and analyze XML data online.XML StringifyFree online tool to XML Stringify.SQL Formatter & BeautifierFree online tool to SQL Formatter & Beautifier.SQL MinifyOnline tool to minify SQL.YAML Formatter & BeautifierFree online tool to YAML Formatter & Beautifier.Lua BeautifierOnline tool to beautify Lua code.PHP FormatterOnline tool to format and beautify PHP.Python Formatter & BeautifierOnline tool to format and beautify Python.GraphQL FormatterFormat unformatted GraphQL queries online.TypeScript FormatterFormat and beautify TypeScript data online.Markdown FormatterFormat and beautify Markdown data online.SOAP FormatterFormat and beautify SOAP data online.WSDL FormatterFormat and beautify WSDL XML notation online.
Code & Data Compare
Compare files, code, and data side by side to find differences.
JSON CompareOnline tool to compare two JSON files.Text CompareOnline tool to compare two text files.XML CompareOnline tool to compare two XML files.YAML CompareOnline tool to compare two YAML files.CSV CompareOnline tool to compare two CSV files.Excel CompareFind the difference between two Excel files.Code CompareCompare two sets of code and identify the differences.Difference CheckerOnline tool to check string differences.
Data Format Converters
Convert between JSON, XML, YAML, CSV, HTML, SQL, CSS and more.
XML to JSON ConverterFree online tool to convert XML file to JSON file.JSON to XML ConverterFree online tool to convert JSON file to XML file.JSON to YAML ConverterFree online tool to convert JSON file to YAML file.YAML to JSON ConverterFree online tool to convert YAML to JSON online.JSON to CSV ConverterFree online tool to convert JSON to CSV online.CSV to JSON ConverterFree online tool to convert CSV to JSON online.JSON to TSV ConverterFree online tool to convert JSON to TSV online.JSON to HTML ConverterFree online tool to convert JSON to HTML online.HTML to JSON ConverterFree online tool to convert HTML to JSON online.JSON to ExcelConvert JSON to Excel online with clean, structured output.JSON to BSONConvert JSON into BSON, a binary format for efficient data storage.BSON to JSONConvert BSON back to human-readable JSON format.JSON to TextLoad your JSON and automatically get plain text.Text to JSONConvert plain text into structured JSON instantly.String to JSONFree online tool to convert String to JSON online.JSON to One LineConvert formatted JSON to a single line of text instantly.JSON FlattenFlatten or unflatten JSON objects with a custom delimiter.JSON to JPGConvert JSON to JPG online, for free.XML to YAML ConverterFree online tool to convert XML to YAML online.YAML to XML ConverterFree online tool to convert YAML to XML online.XML to HTML ConverterFree online tool to convert XML to HTML online.HTML to XML ConverterFree online tool to convert HTML to XML online.XML to CSV ConverterFree online tool to convert XML to CSV online.CSV to XML ConverterFree online tool to convert CSV to XML online.XML to TSV ConverterFree online tool to convert XML to TSV online.XML to XSD ConverterFree online tool to convert XML to XSD online.XSD to XML ConverterFree online tool to convert XSD to XML online.XML to JAVA ObjectConvert XML data into JAVA object online.Convert HTML to MarkdownOnline tool to convert HTML to Markdown.Convert Markdown to HTMLOnline tool to convert Markdown to HTML.HTML to BBCode ConverterFree online tool to convert HTML to BBCode online.BBCode to HTMLConvert BBCode (Bulletin Board Code) to HTML online.HTML to JADE ConverterFree online tool to convert HTML to JADE online.HTML to CSV ConverterFree online tool to convert HTML to CSV online.CSV to HTML ConverterFree online tool to convert CSV to HTML online.HTML to YAML ConverterFree online tool to convert HTML to YAML online.YAML to CSV ConverterFree online tool to convert YAML to CSV online.CSV to TSV ConverterFree online tool to convert CSV to TSV online.TSV to CSV ConverterFree online tool to convert TSV to CSV online.CSV to Excel ConverterFree online tool to convert CSV to Excel online.CSV to TXTConvert CSV file to TXT file.TXT to CSVConvert TXT file to CSV file.CSS to LESSFree online tool to convert CSS to LESS online.LESS to CSSConvert LESS style format to CSS style format.CSS to SASSFree online tool to convert CSS to SASS online.SASS to CSSConvert SASS to CSS online.CSS to SCSSFree online tool to convert CSS to SCSS online.SCSS to CSS ConverterFree online tool to convert SCSS to CSS online.CSS to Stylus ConverterFree online tool to convert CSS to Stylus online.SQL to HTMLFree online tool to convert SQL to HTML online.SQL to YAMLFree online tool to convert SQL to YAML online.SQL to XMLFree online tool to convert SQL to XML online.SQL to JSONFree online tool to convert SQL to JSON online.SQL to CSVFree online tool to convert SQL to CSV online.
Code Generation & Type Converters
Generate typed models and convert between programming languages.
JSON to TypeScriptGenerate TypeScript interfaces with runtime validation from JSON.JSON to C#Instantly convert JSON data into C# classes.JSON to SwiftConvert JSON data into Swift format.JSON to KotlinConvert JSON data into Kotlin format.JSON to POJOConvert JSON data into Java POJO format.POJO to JSONConvert Java POJO classes to readable JSON instantly.JSON to GO StructConvert JSON data into GO Struct format.JSON to DARTGenerate Dart models from JSON.cURL to PHPInstantly convert cURL commands to PHP code online.cURL to PythonConvert curl commands to Python.HTML Code GeneratorGenerate HTML code adapted to your preferred frameworks and CSS libraries.
Encoding & Decoding
Encode, decode, escape, and unescape strings in various formats.
URL EncodeFree online tool to encode your URLs.URL DecodeFree online tool to decode your URLs.Base64 EncodeFree online tool to encode to Base64 format.Base64 DecodeFree online tool to decode Base64 format.IDN EncodeFree online tool to IDN Encode your URLs.IDN DecodeFree online tool to IDN Decode your URLs.UTF8 EncodeOnline tool for variable-length character UTF8 value encoding.UTF8 DecodeOnline tool for variable-length character UTF8 value decoding.Text to HTML EntitiesFree online tool to convert text to HTML Entities.HTML Entities to TextFree online tool to convert HTML Entities to text.JSON EscapeFree online tool to convert plain JSON to escaped HTML.JSON UnescapeFree online tool to convert escaped HTML to plain JSON.HTML EscapeOnline tool to escape an HTML file.HTML UnescapeOnline tool to unescape an HTML file.XML EscapeFree online tool to escape an XML file.JavaScript EscapeFree online tool to escape JavaScript.JWT DecoderFree online tool to decode JWT.UUID DecoderDecode UUIDs into their component parts for analysis.SAML DecoderDecode and parse SAML messages with encoding and compression handling.TLV DecoderDecode EMV records encoded in tag-length-value (TLV) format.ROT-13 Encoder/DecoderFree online tool to decrypt and convert ROT13 to text.Punycode ConverterConvert Punycode to Unicode and vice versa.Morse Code TranslatorTranslate text to Morse code and vice versa.Base64 to HexConvert Base64 strings to Hex values online.Hex to Base64Convert Hex strings to Base64 values online.Base64 to BinaryConvert Base64 to plain binary online.
Number System Converters
Convert between binary, decimal, hex, octal, BCD, and gray code.
Binary to Decimal ConverterFree online tool to convert Binary to Decimal.Decimal to Binary ConverterFree online tool to convert Decimal to Binary.Binary to Octal ConverterFree online tool to convert Binary to Octal.Octal to Binary ConverterFree online tool to convert Octal to Binary.Binary to Hex ConverterFree online tool to convert Binary to Hex.Hexadecimal to Binary ConverterFree online tool to convert Hexadecimal to Binary.HEX to DecimalOnline tool to convert your HEX to Decimal.Decimal to Hexadecimal ConverterFree online tool to convert Decimal to Hexadecimal.Octal to Decimal ConverterFree online tool to convert Octal to Decimal.Decimal to Octal ConverterFree online tool to convert Decimal to Octal.Octal to HexadecimalFree online tool to convert Octal to Hexadecimal.Hex to OctalConvert Hex strings to Octal values online.BCD to DecimalConvert from base BCD to Base 10 integer.Decimal to BCDConvert from base 10 integer to base BCD.Decimal to Gray CodeConvert Decimal values to Gray Code values.Gray to DecimalConvert Gray values to Decimal values.Binary to Gray Code ConverterFree online tool to convert Binary to Gray code.Gray Code to Binary ConverterFree online tool to convert Gray Code to Binary.Decimal to RomanConvert decimal numerals to Roman numerals.
Text & Character Converters
Convert between ASCII, Unicode, binary, hex, and text representations.
Binary to Text ConverterFree online tool to convert Binary to Text.Text to BinaryFree online tool to convert Text to Binary.Binary to String ConverterConvert Binary to String data easily.Hex to TextConvert Hex numbers to Text characters.Hex to ASCIIConvert Hex numbers to ASCII characters.ASCII to Binary ConverterFree online tool to convert ASCII to Binary.ASCII to Hex ConverterFree online tool to convert ASCII to Hex.ASCII to Text ConverterFree online tool to convert ASCII to Text.Text to ASCII ConverterFree online tool to convert Text to ASCII.ASCII to DecimalConvert ASCII characters to Decimal numbers.Decimal to ASCIIConvert Decimal numbers to ASCII characters.Octal to ASCIIConvert octal digits to ASCII symbols.Octal to TextConvert octal numbers to text.Decimal to TextConvert Decimal numbers to Text characters.Text to DecimalConvert Text characters to Decimal.Unicode to ASCIIConvert Unicode-encoded text into ASCII.ASCII to UnicodeConvert ASCII to Unicode characters.Unicode Text ConverterType text and see all available Unicode font ranges.Hex to UTF-8Convert hexadecimal to UTF8 characters.UTF8 to HexConvert UTF-8 values to hexadecimal text instantly.EBCDIC to ASCIIConvert EBCDIC code into ASCII characters quickly.
Color Tools
Convert between color formats and pick colors from images.
HEX to RGBFree online tool to convert HEX color values to RGB.RGB to HEXFree online tool to convert RGB color values to HEX.RGB to CMYKFree online tool to convert RGB to CMYK.CMYK to RGBFree online tool to convert CMYK to RGB.RGB to HSLFree online tool to convert RGB to HSL.HSL to RGBFree online tool to convert HSL to RGB.HEX to HSLFree online tool to convert HEX to HSL.HEX to CMYKFree online tool to convert HEX to CMYK.CMYK to HEXFree online tool to convert CMYK to HEX.HEX to PantoneConvert HEX codes to nearest Pantone values instantly.Pantone to HEXConvert PANTONE PMS color codes to HEX format.CMYK to PantoneConvert CMYK codes to nearest Pantone values instantly.Pantone to CMYKConvert PANTONE PMS color codes to CMYK format.Color InverterReverse the colors of an image for free.Color PickerCreate custom color palettes from any image.
Unit & CSS Converters
Convert CSS units, measurements, temperatures, and time.
REM to PX ConverterFree online tool to convert CSS unit REM values to pixels.PX to REM ConverterFree online tool to convert pixels to the CSS unit REM.Miles to KMConvert Miles to Kilometers.KM to MilesConvert Kilometers to Miles.Kilograms to PoundsInstantly convert Kilograms to Pounds (lbs).Pounds to KilogramsInstantly convert Pounds (lbs) to Kilograms.Fahrenheit to CelsiusConvert degrees Fahrenheit to degrees Celsius.Celsius to FahrenheitConvert degrees Celsius to degrees Fahrenheit.Degrees to RadiansConvert Degrees to Radians.Radians to DegreesConvert Radians to Degrees.Hours to DaysConvert hours to days in the fastest way.Hours to SecondsConvert hours to seconds in the fastest way.Seconds to HoursConvert seconds to hours in the fastest way.
Network & IP Tools
Convert, lookup, and analyze IP addresses, hostnames, and network data.
IP to HexConvert IPv4 addresses to hexadecimal form.Hex to IPConvert hexadecimal form to IPv4 addresses.IP to BinaryConvert IP addresses (IPv4/IPv6) to binary code.Binary to IPConvert binary code to IPv4 addresses.IP to DecimalConvert IPv4 addresses to Decimal form.Decimal to IPConvert Decimal form to IPv4 addresses.IP to HostnameConvert any IP address to hostname.Hostname to IPFind all DNS records for a domain name.IPv4 to IPv6Convert IPv4 addresses to IPv6 formats.IPv6 to IPv4Convert IPv6 addresses to IPv4 format.Ping IPv6Ping IPv6 addresses or hostnames.Reverse IP LookupConvert any IP address to hostname for that IP.MAC Address LookupIdentify device manufacturer by analyzing its MAC address.SWIFT Code CheckerValidate and analyze SWIFT/BIC codes.
Calculators & Math
Perform binary, bitwise, scientific, and specialized calculations.
XOR CalculatorFree online tool to calculate the XOR.Binary CalculatorFree online tool to calculate binary operations.Bitwise CalculatorFree online tool to calculate bitwise operations.Bit Shift CalculatorFree online tool to calculate bit shift operations.Rounding CalculatorRound to the nearest number.Rotation CalculatorCalculate new coordinates of a point rotated about the z-axis.Fibonacci CalculatorGenerate Fibonacci numbers for a range or calculate Fn for any n.Prime Number CalculatorFind if a number is prime or composite.Scientific Notation ConverterConvert a number to and from scientific notation.Crontab GeneratorFree online tool to generate crontab expressions with ease.Cron ParserInstantly convert any cron expression to readable format.Unix Time ConverterFree tool to convert Unix/Epoch timestamp to readable date and time.Venmo Fee CalculatorCalculate Venmo instant transaction fees easily.
Text Utilities
Count, sort, extract, transform, and manipulate text.
Character CountOnline tool to count characters in a string.Word CountOnline tool to count words in a string.Line CounterFree online tool to count number of lines in your text.Sentence CountOnline tool to count number of sentences in text.Word SorterOnline tool to sort words in a string.Number SorterSort space-separated number strings.Sorting ListOnline tool to sort a list.Reverse Text GeneratorFree online tool to reverse text online.Text LowercaseOnline tool to convert text to lowercase.Text UppercaseOnline tool to convert text to uppercase.Text RepeaterGenerate and repeat strings of text up to 25 times.Text RotaterRotate any string of characters to the left or right.Text to One LineRemove line breaks and convert multi-line text to a single line.Remove SpacesRemove extra spaces from text.Remove Duplicates OnlineFree online tool to remove duplicate lines from text.Remove DiacriticsRemove accents from text.Shuffle LettersOnline tool to randomly shuffle letters in a string.Shuffle Text LinesOnline tool to randomly shuffle text lines.String Split By DelimiterOnline tool to split a string by a defined delimiter.Find and Replace StringFind and replace strings in browser.Add Prefix Or SuffixAdd a prefix and suffix to lines of text online.Words to NumbersConvert the descriptive form of a number into digit form.Numbers to WordsConvert numbers to their word representation.Thousands SeparatorInstantly convert numbers to readable text with thousands separator.Rows to Columns ConverterTransform text data rows to columns online.Column to CSVConvert a column to a comma-separated list.Phone Number ExtractorFree online tool to extract phone numbers.Email ExtractorFree online tool to extract email addresses from text.URL ExtractorFree online tool to extract URLs from text.Extract Numbers From TextExtract the numeric part from a text online.Extract Text From HTMLExtract tags and preserve text structure from HTML.Extract Text from JSONOnline tool to extract text from JSON.Extract Text from XMLOnline tool to extract text from XML.Strip HTMLFree online tool to strip HTML tags from text.
Validators, Parsers & Viewers
Validate, parse, test, and view structured data and code.
JSON ValidatorFree online tool to beautify and validate JSON data.JSON ParserOnline JSON Parser to parse, view, and analyze JSON in Tree View.JSON ViewerOnline JSON Viewer to parse, view, and analyze JSON in Tree View.HTML ValidatorFree online tool to validate HTML files.HTML TesterInput HTML, CSS, and JavaScript, then preview the output live.HTML ViewerInput or upload HTML, CSS, and JavaScript, then preview live.XML ValidatorFree online tool to validate XML files.XML ParserOnline XML Parser to view and analyze XML in Tree View.XML ViewerOnline XML Viewer to parse and analyze XML in Tree View.YAML ValidatorFree online tool to validate YAML files.YAML ParserParse YAML data online for easy readability.YAML ViewerView and analyze YAML data online.CSS ValidatorFree online tool to validate CSS files.CSV ValidatorFree online tool to validate CSV files.JavaScript Validator & LinterFree online tool to validate JS files.JavaScript TesterTest JavaScript code online.JavaScript Regex TesterTest regular expressions with live match highlighting.XPath TesterFree online tool to test and evaluate XPath expressions.JSONPath TesterFree online tool to test and evaluate JSON Path expressions.URL ParseFree online tool to parse your URLs.Credit Card ValidatorValidate credit card numbers to ensure they follow standard format.JSON GeneratorGenerate JSON effortlessly from random data.
Random Data Generators
Generate random values, test data, barcodes, QR codes, and more.
Random JSON GeneratorFree online tool to generate a random JSON file.Random XML GeneratorFree online tool to generate XML code based on template.Random CSV GeneratorFree online tool to generate random CSV data.Random YAML GeneratorFree online tool to generate random YAML.Random TSV GeneratorFree online tool to generate TSV.Random Binary GeneratorFree online tool to generate random binary numbers.Random Character GeneratorFree online tool to generate random characters.Random Color GeneratorFree online tool to generate random colors.Random Date GeneratorFree online tool to generate random calendar dates.Random Decimal Fraction GeneratorFree online tool to generate random decimal fractions.Random Decimal GeneratorFree online tool to generate random decimal values.Random GUID GeneratorFree online tool to generate random GUID values.Random Hex GeneratorFree online tool to generate random Hex values.Random Octal GeneratorOnline tool to generate random octal values.Random IP GeneratorFree online tool to generate random IP values.Random MAC GeneratorFree online tool to generate random MAC addresses.Random Number GeneratorFree online tool to generate random number values.Random Paragraph GeneratorFree online tool to generate random text paragraphs.Random Password GeneratorFree online tool to generate random passwords.Random Time GeneratorFree online tool to generate random time values.Random UUID GeneratorFree online tool to generate random UUID values.Random Sentence GeneratorFree online tool to generate random text sentences.Random String GeneratorFree online tool to generate random string values.Random Word GeneratorFree online tool to generate random word strings.Random Letter GeneratorGenerate random letters online.Random Text from RegExFree online tool to generate random text from RegEx.Random Byte GeneratorFree online tool to generate a random byte output.Random Username GeneratorFree online tool to generate a random username.Random Unicode GeneratorFree online tool to generate random Unicode.Random Base64 GeneratorFree online tool to generate random Base64.Random ISBN GeneratorFree online tool to generate a random ISBN number.Random Name GeneratorFree online tool to generate random names.Random Address GeneratorFree online tool to generate random addresses.Random Bitmap GeneratorFree online tool to generate random bitmaps.Random UTF8 GeneratorFree online tool to generate random UTF8 data.Test Data GeneratorOnline tool to generate test data.Test Case GeneratorEffortlessly generate test cases.Lorem Ipsum GeneratorFree online tool to generate random Lorem Ipsum text.Credit Card Number GeneratorGenerate random and realistic credit card numbers.QR Code GeneratorFree online tool to generate QR codes.Barcode GeneratorFree online tool to generate barcodes.Placeholder Image GeneratorOnline tool to generate placeholder images of desired dimensions.Routing Number GeneratorGenerate valid-format U.S. bank routing numbers instantly.IMEI GeneratorGenerate International Mobile Equipment Identity (IMEI) numbers.API Key GeneratorCreate secure, random API tokens instantly.Token GeneratorGenerate random strings with custom chars, letters, numbers, and symbols.Email GeneratorGenerate unique email addresses with customizable lengths.Phone Number GeneratorGenerate random phone numbers with proper formatting for 25+ countries.MySQL Password GeneratorGenerate strong, secure MySQL database passwords.URL Slug GeneratorGenerate URL slugs from any text.Zipcode GeneratorExplore and generate US zip codes.Katalon Automation Capabilities GeneratorAccelerate testing with AI Katalon test case generation.
Hashing & Security
Compute hashes, generate HMACs, and encrypt/decrypt data.
Hash CalculatorFree online tool to create a hash of each input attribute.Hash MAC GeneratorGenerate HMAC from a string with a secret key.MD2 Hash CalculatorOnline tool to compute MD2 hash of text and strings.MD4 Hash CalculatorOnline tool to compute MD4 hash of text and strings.MD5 Hash CalculatorOnline tool to compute MD5 hash of text and strings.SHA1 Hash CalculatorOnline tool to compute SHA1 hash.SHA256 Hash CalculatorOnline tool to compute SHA256 hash.SHA384 Hash CalculatorOnline tool to compute SHA384 hash.SHA512 Hash CalculatorOnline tool to compute SHA512 hash.Shake 256 Hash GeneratorOnline tool to compute Shake 256 hash.CRC32 Hash CalculatorOnline tool to calculate CRC32 hash.CRC32B Hash CalculatorOnline tool to calculate CRC32B hash.RIPEMD128 Hash CalculatorOnline tool to compute RIPEMD128 hash.RIPEMD160 Hash CalculatorOnline tool to compute RIPEMD160 hash.RIPEMD256 Hash CalculatorOnline tool to compute RIPEMD256 hash.RIPEMD320 Hash CalculatorOnline tool to compute RIPEMD320 hash.ADLER32 Hash CalculatorOnline tool to calculate ADLER32 hash.Gost Hash CalculatorCalculate and validate Gost hash online.Whirlpool Hash CalculatorOnline tool to compute Whirlpool hash.NTLM Hash GeneratorOnline tool to compute NTLM hash.Bcrypt GeneratorSecurely generate a strong bcrypt password hash from a string.AES Decryption OnlineDecrypt AES-encrypted data with a secret key.DES CalculatorEncrypt and decrypt text using DES algorithm.
Image & File Tools
Convert image formats, extract text, encode files, and more.
BMP to PNGConvert BMP to PNG online, for free.BMP to JPGConvert BMP to JPG online, for free.GIF to JPGConvert GIF to JPG online, for free.GIF to PNGConvert GIF to PNG online, for free.JPG to PNGConvert JPG to PNG online, for free.Rotate ImageRotate pictures online in just one click.Image to TextExtract text from images.Image to Base64Encode images to Base64 data.File to Base64Encode any file to Base64 for embedding in documents.
Browser & System Info
Detect your browser, OS, IP address, and system capabilities.
What Is My IP AddressShows your public IP address.What Is My Local IP AddressShows your local IP address.What is My Internet SpeedCheck your upload and download speed.What Is My ISPDetect your Internet Service Provider.What is my User AgentShows what your browser sends in the User-Agent header.What is my BrowserInstantly detect and display your browser version.What's My Browser SizeGet your browser window size in pixels.What Operating System do I haveDetect your OS name and version.What version of Chrome do I haveCheck your Chrome version.What version of Firefox do I haveCheck your Firefox version.What version of Safari do I haveCheck your Safari version.What version of Windows do I haveCheck your Windows version.What version of macOS do I haveCheck your macOS version.What version of iOS do I haveCheck your iOS version.What version of Android do I haveCheck your Android version.What version of Java is installedCheck if Java is installed and its version.What version of Flash do I haveCheck if Flash is installed and its version.Is JavaScript EnabledCheck if JavaScript is enabled in your browser.Am I using TorCheck if your IP matches known Tor exit nodes.