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RFS — Regex From Selection

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Overview

A Chrome extension that suggests multiple regex candidates at varying abstraction levels from selected text. Fully local.

A Chrome extension that proposes multiple regex candidates at varying abstraction levels from text you select in the browser. ■ Highlights ・72 built-in detectors: email / URL / credit card / Japanese address / price / phone / UUID / GitHub token / JWT / dates / postal code / etc. Recognize known patterns instantly. ・Top-down generalization algorithm: even unknown patterns get parallel candidates at varying abstraction (character class, length). ・3-axis tuning: intent × domain × dialect - intent: filter / extract / validate / replace / security / redact - domain: spoiler / sns-ngword / forum-mod / data-extract / code-review - dialect: JavaScript / Python / Java / Ruby / Go / PCRE / PostgreSQL / MySQL / BigQuery / YARA / HTML5 and more ・Quality scoring ranks candidates; the top pick is marked "Recommended". ・Inline tester: edit and verify the regex without leaving the popover. ・Switchable UI (Japanese / English). ■ How to use 1. Select any text on a page 2. Right-click → "Generate regex" (or press Alt+R) 3. The popover shows candidates ordered by quality 4. Click "Copy" on the one you want, or open "Tester" to fine-tune ■ About AI (Gemini Nano) You can opt-in to use Chrome's built-in language model (Gemini Nano) for extra candidates. The AI layer is supplementary — the algorithm and the 72 detectors are designed to be useful on their own. Nano requires Chrome 128+ with chrome://flags enabled and a model download (~2 GB). Setup instructions are provided on the options page. ■ Privacy Fully local. Selected text, generated regex, and any other data never leave your device. Even with AI enabled, processing happens inside Chrome's built-in Gemini Nano (on-device). See the privacy policy for details.

Details

  • Version
    0.1.8
  • Updated
    June 4, 2026
  • Offered by
    mikotos
  • Size
    247KiB
  • Languages
    2 languages
  • Developer
    Email
    support@mikoto-gateway.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Manage extensions and learn how they're being used in your organization
The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes

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