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Developer Utilities

Regex tester, text diff, JSON diff, epoch converter, cron generator

Unix Timestamp / Epoch Converter

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Convert timestamp to date and date to Unix epoch

Regex Tester

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Test regular expressions against text online

Text Diff / Text Compare

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Compare two texts and see differences

Cron Expression Generator

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Build cron expressions and see next run times

JSON Diff

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Compare two JSON objects

Frequently Asked Questions about Developer Utilities

What are developer utilities?
Utilities for programmers: regex tester, text diff, JSON diff, Unix epoch converter, and cron expression generator. Test, compare, and convert — all in your browser, free and private.
Do I need to install anything?
No. All these developer utilities work in the browser. Paste your input and get instant results — no downloads or signup.