Developer Tools

9 free utilities for developers — UUID, hash, regex, SQL, YAML, and more. All run in your browser.

Popular

UUID Generator

Generate UUID v4 and v7 in various formats

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Hash Generator

Generate MD5, SHA256, SHA512, and SHA3 hashes

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Timestamp Converter

Convert Unix timestamps to dates across timezones

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Regex Tester

Test regular expressions with live match highlighting

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SQL Formatter

Format and beautify SQL queries with proper indentation and keyword casing

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YAML Validator

Validate YAML syntax and view the parsed structure as a tree

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XML Formatter

Format or minify XML with configurable indentation

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Cron Generator

Build cron expressions visually with field presets and next run preview

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Text Diff

Compare two text blocks line by line with color-coded diff output

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About Developer Tools

Yurlie's developer tools are designed for software engineers, DevOps professionals, and IT administrators who need fast, privacy-first utilities. Every tool runs entirely in your browser using JavaScript — no data is ever sent to a server.

Whether you need to generate a UUID for a database primary key, compute a SHA-256 hash of a file, test a regex against sample data, or format a messy SQL query, these tools are designed to be fast, accurate, and accessible from any device.

Frequently Asked Questions

What developer tools are available?

Yurlie offers 9 free developer tools: UUID Generator, Hash Generator (MD5/SHA-1/SHA-256/SHA-512), Regex Tester, SQL Formatter, XML Formatter, YAML Validator, Cron Expression Explainer, Text Diff, and Unix Timestamp Converter.

Are the tools free?

Yes. All developer tools on this page are 100% free with no usage limits. They run entirely in your browser — no login or account required.

Is my data private?

Absolutely. Every tool runs client-side using JavaScript in your browser. No data is ever transmitted to our servers, making these tools safe for sensitive source code, API keys, or production data.

Can I access these tools via API?

Yes. All tools are also available as REST API endpoints. Visit the API documentation page to get your free API key and start integrating.