Head-to-head · September 2026
Copyscape Premium vs Plagiarism
Copyscape Premium comes out ahead, winning 8 of 8 head-to-head checks against Plagiarism.
Copyscape Premium
The Copyscape Premium plugin lets you check if a WordPress post is original before it’s published, by using…
Plagiarism
The Plagiarism plugin keeps you from being penalized by Google (Panda) for inadvertent duplicate content.
| Metric | Copyscape Premium | Plagiarism |
|---|---|---|
| Active installs | 800+ | 60+ |
| Downloads (30 days) | 1.1K | 57 |
| Download trend | +34.5% | +14% |
| Rating | 3.2/5 | 3/5 |
| Reviews | 10 | 7 |
| Health score | 47/100 | 29/100 |
| Last updated | 9 months ago | 13 years ago |
| Tested up to | WP 6.9.9 | WP 3.7.41 |
| Support resolved | — | — |
| Requires PHP | Any | Any |
| First released | Apr 2013 | Dec 2012 |
Daily downloads, last 90 days
Copyscape PremiumPlagiarism
Choose Copyscape Premium if…
You care most about active installs, downloads (30 days) and download trend.
- Momentum — downloads up 34.5% vs the previous 30 days
- Small user base (800+ active installs)
- Mixed reviews — 3.2/5 from 10 ratings
- Only tested up to WordPress 6.9 (latest is 7.1)
Choose Plagiarism if…
You prefer its feature set and workflow — it holds its own on the fundamentals.
- Small user base (60+ active installs)
- Low rating so far — 3/5 from only 7 reviews
- No update in 12 years
- Only tested up to WordPress 3.7 (latest is 7.1)
Both compete in: duplicate content plagiarism
FAQ
Copyscape Premium vs Plagiarism: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Sep 30, 2026
Which is better, Copyscape Premium or Plagiarism?
Copyscape Premium comes out ahead, winning 8 of 8 head-to-head checks against Plagiarism. Choose Copyscape Premium if you care most about active installs, downloads (30 days) and download trend.
Is Copyscape Premium more popular than Plagiarism?
Copyscape Premium is the more popular of the two with 800+ active installs, compared with 60+ for Plagiarism.
Can I use Copyscape Premium and Plagiarism together?
Both plugins cover duplicate content and plagiarism, so most sites only need one. Running two plugins that do the same job can cause conflicts and slow your site down — pick the one that fits best and remove the other.
Are Copyscape Premium and Plagiarism free?
Yes. Both are free to download from the official WordPress.org plugin directory. Either may also offer paid upgrades from its developer.
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