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2025年9月27日

Chrome extension "Page Freshness Checker" that lets you identify the freshness of web information at a glance

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Links for Chrome and Edge desktop versions

For many users, instantly knowing when information on the web was published or last updated is an important concern. Without the ability to check an item's freshness, it becomes difficult to judge whether the data can be trusted. "Page Freshness Checker" is a Chrome extension that automatically detects the publication and update dates of web pages and displays color-coded freshness banners on the page. This makes it possible to intuitively check page freshness, detect update timestamps, and confirm content updates. Additionally, color-coded freshness indicators simplify the evaluation of information recency and the extension may be useful as an SEO tool or for research support.

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Detailed Features of Page Freshness Checker

ItemDetails
Automatic detection of publication/update datesCan automatically obtain publication and update dates from metadata and JSON-LD
Color-coded freshness indicatorQuickly judge page freshness at a glance with four levels: green, orange, red, and gray
Banner close button includedEasily hide the banner when desired
Lightweight and immediately compatible with many sitesFast operation and usable on a large number of web pages without issues

Another notable aspect of this extension is that it automatically retrieves dates from metadata, allowing you to understand information freshness without complicated operations. Also, the color-coded display makes the freshness obvious at a glance, improving readability and convenience.

Use cases

UserExample use cases
Researchers / InvestigatorsQuickly identify page update dates to efficiently collect the latest information
Content creatorsInstantly check information freshness to produce more reliable articles
News readers / Health information consumersAvoid misunderstandings from outdated information and ensure access to the latest information
SEO professionalsTrack page update frequency to aid in content evaluation
Students / LearnersVerify the freshness of reference materials to support learning with up-to-date information

How to use

  • Install from the Chrome Web Store: Page Freshness Checker.
  • Enable the extension, then visit a target web page — a freshness banner will appear at the top of the page.
  • The banner is color-coded so you can tell the recency of the information at a glance.
  • You can hide the banner using the close button if needed.

Impressions after trying it

The concept is good, but it is a rather unfortunate tool in practice.

When the alert appears, elements behind it cannot be clicked, which is problematic.

It might be more user-friendly to exclude specific domains or make the element transparent.

I look forward to future updates!

If you prefer a less obtrusive approach, you might like:

https://chromewebstore.google.com/detail/last-modified-timestamp/ilahbmmcmhcpjpfcgodgijbjadadicmg

About security risks

According to the privacy policy for "Page Freshness Checker," this extension analyzes the publication and update dates of pages viewed by users, but it does not transmit personal information or browsing histories externally, nor does it reuse the data. Therefore, the security risk is low and the design takes privacy protection into account. Please check the privacy policy page for details (Privacy Policy).

Conclusion

"Page Freshness Checker" is a Chrome extension that makes it easy to confirm the reliability of information by detecting publication and update dates and displaying color-coded freshness indicators. It is lightweight and immediately compatible with many sites, making it suitable for a variety of use cases such as research, SEO evaluation, and checking news or health information. For those who need page freshness and update date detection, it is a strong option. For details and installation, visit the official Chrome Web Store page: Page Freshness Checker.


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