DevToolbox

Useful by default

Tools that save developers time

Converters, formatters, and focused utilities for everyday work. No account and no server-side processing of your data.

Popular tools

All tools →

Invisible Character Detector

Find invisible characters, special spaces, and control characters. Choose cleanup groups and copy the result.

Unicode Escape / Unescape

Convert text to Unicode escape sequences and back. JSON and JavaScript modes, emoji support, and local processing.

Unicode Normalizer

Normalize Unicode to NFC, NFD, NFKC, or NFKD. Compare code points before and after conversion directly in your browser.

JSON, CSV, and XML Converter

Convert tabular and structured data between JSON, CSV, and XML.

Configuration File Converter

Convert YAML, TOML, Java Properties, INI, and .env into each other.

JSON Formatter and Validator

Format, minify, and validate JSON without uploading your data.

Categories

Generators

UUIDs, passwords, random strings, placeholder text, and hashes.

Text

Count, compare, transform, and clean text and line-based lists.

Data formats

Format, validate, and convert structured data.

Encoding and decoding

Character codes, Unicode, and byte-to-text transformations.

Web and URL

Utilities for URLs, query parameters, and web development.

Date and time

Convert timestamps, date formats, and cron schedules.

What’s new

Unicode Escape / Unescape added

Convert text to Unicode escape sequences and back. JSON and JavaScript modes, emoji support, and local processing.

Unicode Normalizer added

Normalize Unicode to NFC, NFD, NFKC, or NFKD. Compare code points before and after conversion directly in your browser.