If Modified Since
If Modified Since tells search engine spiders one of two things about a webpage:
Consider an alternative
If Modified Since shows warning signs in 2026 — compare the alternatives below before installing. It runs on 1K+ sites, is rated 3.7/5 and was last updated 11 years ago, and scores 30/100 on our health check.
- Very few reviews so far
- No update in 11 years
- Only tested up to WordPress 4.2 (latest is 7.1)
Daily downloads
Download spikes usually follow a new release — each site that auto-updates counts as a download.
Rankings
Where If Modified Since stands todayWordPress.org search rankings
Live position in the plugin search, top 100| Keyword | Position |
|---|---|
| IF Modifeid Since | #1 |
| if-modified-since | >100 |
| seo | >100 |
Version adoption
Share of active sites per release.
Rating breakdown
★★★★★★★★★★ 3.7 from 3 reviews
About If Modified Since
From the official readme · v0.9Description
If Modified Since tells search engine spiders one of two things about a webpage:
- This webpage has not changed, no need to download again.
- This webpage has changed so download again because there is new information.
If the requested page has not been modified since the time specified by a search engine spider, a 304 (not modified) response will be returned without any message-body.
If you have any issues using If Modified Since, find a bug or have an idea to make the plugin even better then please help to improve If Modified Since.
If you don’t report it, I can’t fix it!
Installation
- Upload the
if-modified-sincefolder to the/wp-content/plugins/directory - Activate the plugin through the ‘Plugins’ menu in WordPress
- No need to configure, it just works!
For developers
Is this your plugin? Show off the numbers.
Add a live badge to your site, docs or GitHub README. It updates on its own — no account needed.
FAQ
If Modified Since: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Oct 5, 2026
Is If Modified Since free?
Yes. If Modified Since is free to download and use from the official WordPress.org plugin directory.
Is If Modified Since safe to use in 2026?
If Modified Since shows warning signs in 2026 — compare the alternatives below before installing. It runs on 1K+ sites, is rated 3.7/5 and was last updated 11 years ago, and scores 30/100 on our health check.
How many websites use If Modified Since?
If Modified Since is active on 1K+ WordPress websites and has been downloaded 6,599 times since it launched in August 2015. It was downloaded 155 times in the last 30 days.
Does If Modified Since work with WordPress 7.1?
If Modified Since is officially tested up to WordPress 4.2.39, while the latest release is 7.1.2. It may still work, but try it on a staging site first.
When was If Modified Since last updated?
The latest version, 0.9, was released on August 17, 2015 (11 years ago).
Who makes If Modified Since?
If Modified Since is developed and maintained by ezraverheijen.
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