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JSON tools

JSON Formatter & ValidatorJSON to XML ConverterXML to JSON ConverterJSON to YAML ConverterYAML to JSON ConverterJSONPath TesterJSON to CSV ConverterXML FormatterYAML FormatterYAML to Properties ConverterProperties to YAML Converter

Encode & decode

Base64 EncoderBase64 DecoderURL EncoderURL DecoderHTML Entity EncoderHTML Entity DecoderUnicode EscapeUnicode UnescapeJSON String EscapeJSON String UnescapeURL ParserText to BinaryBinary to TextBasic Auth Generator

Text tools

Text Case ConverterWhitespace & Line CleanerWord & Character CounterRandom String GeneratorText & JSON Diff CheckerURL Slug GeneratorLorem Ipsum GeneratorMarkdown to HTML ConverterNATO Phonetic AlphabetEmail Normalizer

Time & security

Unix Timestamp ConverterHash GeneratorUUID GeneratorJWT DecoderPassword Strength CheckerMAC Address GeneratorHMAC-SHA256 GeneratorULID Generator

Developer utilities

Regular Expression TesterNumber Base ConverterColor ConverterSQL FormatterChmod Permission ConverterHTTP Status CodesMIME Type LookupCode BeautifierCode MinifierCrontab Expression Tool

Network tools

IPv4 Address ConverterRandom Port Generator

Math & units

Roman Numeral ConverterTemperature ConverterLength ConverterWeight ConverterArea ConverterVolume ConverterSpeed ConverterData Storage ConverterTime ConverterPercentage Calculator

Image tools

QR Code GeneratorQR Code DecoderImage to Base64 Converter

Network tools

Random Port Generator

Generate an available-range TCP or UDP port number.

⌁Runs locally in your browser

How it works

Paste your input, choose an action, and copy the result.

CodeTK does not upload, store, or analyze tool input. Any saved draft remains in this browser only.

Related tools

IPv4 Address Converter

Convert an IPv4 address to decimal, binary, and hexadecimal. /en/ipv4-converter
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All tools run locally in your browser.

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