Regex Lab | Offline Regex & Replacement Tool
Test JavaScript regular expressions in an isolated worker, inspect captures and preview replacements locally.
WHAT YOU GET
• Isolated-worker execution
• Timeout and cancellation
• Named and numbered captures
• Replacement exports
• Zero-length-match handling
DELIVERY
Complete downloadable ZIP with editable source, EN/RU setup guide, commercial license and release-check notes. Current desktop browser; extract ZIP before opening.
LICENSE
One person/business; internal and client-service use permitted. Exported results are yours; tool redistribution prohibited.
PLEASE READ
JavaScript regular expressions only, not PCRE/Python. Input 1 million characters; pattern 1,000; replacement 10,000; maximum 5,000 matches and 4 million output characters. Requires local Blob Web Worker support. This is a pattern workbench, not an email validator or security scanner.
FAQ
Is this a subscription? No: one-time digital download.
Does it upload my data? Browser tools process locally; API Probe intentionally requests the endpoints you configure.
Is customization/setup included? Source and instructions are included; custom work, hosting and integrations are not.
РУССКИЙ
Готовый цифровой товар с исходниками, инструкцией EN/RU и лицензией. Разовая покупка. Интерфейс на английском; русская инструкция в START-HERE.html. Работает локально в современном браузере.
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