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💻 Developer · 4 Tools

Developer Tools

Free online utilities for cron expressions, regex testing, Markdown, and placeholder text

Four tools that every developer reaches for regularly — but rarely finds in a clean, fast, browser-based form without ads or sign-ups. Whether you're scheduling a cron job, debugging a regex pattern, previewing documentation, or generating placeholder content for a prototype, these utilities handle it instantly.

The Cron Generator takes the guesswork out of cron syntax with a visual scheduler that explains your expression in plain English: "At 09:00 on every Monday through Friday." The Regex Tester highlights matches in real time as you type, supporting the full JavaScript regex spec including named capture groups and lookaheads. The Markdown Preview renders GitHub Flavored Markdown with tables, code blocks, and task lists — identical to how it would appear in a GitHub README.

See also the Data Formatter Tools and Security & Encoding Tools for the full developer toolkit across MODOO HUB.

All 4 Developer Tools
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Cron Expression Generator
Visual cron builder with plain-English output
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Regex Tester
Real-time regex matching with group capture
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Markdown Preview
Live preview with GitHub Flavored Markdown
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Lorem Ipsum Generator
Placeholder paragraphs for prototyping
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Frequently Asked Questions
How does the Cron Generator work?▼
Select your schedule frequency using the visual UI (every minute, hourly, daily, weekly, monthly) or enter a custom cron expression. The generator shows a plain-English explanation of exactly when the job will run.
Does the Regex Tester support named capture groups?▼
Yes. The Regex Tester supports full JavaScript RegExp syntax including named capture groups (?<name>...), lookaheads, lookbehinds, and all standard flags: g (global), i (case-insensitive), m (multiline), s (dotAll), and u (unicode).
Can I preview GitHub Flavored Markdown?▼
Yes. The Markdown Preview renders both CommonMark and GitHub Flavored Markdown (GFM), including tables, task lists, fenced code blocks with syntax highlighting, footnotes, and strikethrough text.
How much Lorem Ipsum text can I generate?▼
The Lorem Ipsum Generator can produce from a single sentence up to 50 paragraphs. Choose between classic Latin placeholder text or randomized variations for more unique placeholder content.
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