Observed arrival · 2026-11-10
便利ツール箱 puts 22 web-ops fixes in one toolbox
A Japanese-language collection of free, browser-based utilities for web development and operations, including email-authentication checks, text and code tools, and network lookups.
- For
- Japanese-speaking web developers and site operators
- Worth noticing
- The DKIM checker can search common selectors in a batch when the operator does not know which selector to try.
Field notes
The DKIM checker can try common selectors in one batch, while its guidance explains how to find the exact selector in an email's DKIM-Signature header. The regular-expression view maps branches, optional paths, and repetition into a railroad-style diagram, but the page notes that large patterns may not be diagrammed and complex syntax may be simplified. Code formatting is also explicitly limited: JavaScript, CSS, and HTML receive simple formatting that can break when symbols appear inside strings.
Observed signals
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Editorial observations of this landing page, not a rating.
One card from the complete issue