Free online converters & developer tools

ConvertUtility is a fast, privacy-first toolbox for developers and data work. Many tools run locally in your browser.

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Popular tools

Most clicked tools on ConvertUtility

Showing 12 / 12

Developer Tools

Parse a URL into protocol, host, path, query params and hash. Fast, private and free.

/tools/url-parser

Decode JWT header and payload online. Fast, private and free.

/tools/jwt-decoder

JSON Formatter & Validator

Format, prettify and validate JSON online. Fast, private and free.

/tools/json-formatter

Unix Timestamp Converter

Convert Unix timestamps to human-readable dates (and back). Fast, private and free.

/tools/unix-timestamp

Password Generator

Generate strong passwords online. Fast, private and free.

/tools/password-generator

JSON to CSV Converter

Convert JSON to CSV online. Fast, private and free.

/tools/json-to-csv

Validate CSV structure online (columns, headers, quotes). Fast, private and free.

/tools/csv-validator

CSV to JSON Converter

Convert CSV to JSON online. Fast, private and free.

/tools/csv-to-json

Base64 Encode / Decode

Encode text to Base64 or decode Base64 to text. Fast, private and free.

/tools/base64-encode-decode

Text Tools

Text Diff Checker

Compare two texts line-by-line online. Fast, private and free.

/tools/text-diff

Text Statistics

Count words, characters, lines and bytes online. Fast, private and free.

/tools/text-statistics

Line Sorter & Deduplicator

Sort lines, remove duplicates, and clean lists online. Fast, private and free.

/tools/sort-lines

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