Best plagiarism plugins for WordPress
The most popular plagiarism plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Copyscape Premium leads with 700+ active installs, ahead of Plagiarism Checker By SST (100+) and Plagiarism (60+). All 15 plugins tagged “plagiarism” are below, with figures from WordPress.org that update every day.
Installs aren’t everything: a recent release, a “Tested up to” that matches the current WordPress, and support threads that get resolved show a plugin is looked after. Open any plugin for its downloads, rank history and alternatives.
Research this niche or see all plugins.
Top 10 plagiarism plugins
- 1.
Copyscape PremiumThe most installed plagiarism plugin, with 700+ active installs. Rated 3.2 from 10 reviews, updated 10 months ago. Tested only up to WordPress 6.9.11.
- 2.
Plagiarism Checker By SST100+ active installs. Rated 3.0 from 10 reviews, last updated 2 years ago. Tested only up to WordPress 6.6.11.
- 3.
Plagiarism60+ active installs. Rated 3.0 from 7 reviews, last updated 13 years ago. Tested only up to WordPress 3.7.41.
- 4.
Proofread Bot40+ active installs. Only 1 review so far, last updated 11 years ago. Tested only up to WordPress 3.9.40.
- 5.
Copyscape Post Checker30+ active installs. Only 2 reviews so far, last updated 16 years ago.
- 6.
Content Copy Finder10+ active installs. Only 1 review so far, last updated 6 years ago. Tested only up to WordPress 5.4.25.
- 7.
Plagiary Search10+ active installs. Only 1 review so far, last updated 10 years ago. Tested only up to WordPress 4.5.33.
- 8.
Plagium10+ active installs. Only 1 review so far, last updated 10 years ago. Tested only up to WordPress 4.2.39.
- 9.
plagia10+ active installs. Only 1 review so far, last updated 5 years ago. Tested only up to WordPress 5.6.23.
- 10.
AI Humanizer & AI Detector10+ active installs. No reviews yet, last updated 1 year ago. Tested only up to WordPress 6.8.12.
All 15 plugins tagged “plagiarism”
Copyscape Premium
Down in the last 7 days:30#7,745by Copyscape10 months ago
The Copyscape Premium plugin lets you check if a WordPress post is unique before it's published, by searching for duplicate content on the web.
- Installs
- 700+
- Rating
- 3.2(10)
- Downloads
- 23/day
Plagiarism Checker By SST
Down in the last 7 days:37#14,860by SmallSeoTools2 years ago
WordPress Plagiarism checker: Check Plagiarism / Duplicate Content before you publish your post. Get your content results sentence wise.
- Installs
- 100+
- Rating
- 3.0(10)
- Downloads
- 0/day
Plagiarism
Up in the last 7 days:40#20,065by Free plug in by SEO Roma13 years ago
Checks your contents (posts and pages) against the web for inadvertant duplicate content before postings. Detects online copies of your older posts.
- Installs
- 60+
- Rating
- 3.0(7)
- Downloads
- 0/day
Proofread Bot
#21,786by giorgio7912 years ago
Why Proofread Bot?
- Installs
- 40+
- Rating
- 4.0(1)
- Downloads
- 0/day
Copyscape Post Checker
#23,039by lerietaylor16 years ago
This plugin will allow administrators to chek posts against copyscape via the copyscape API.
- Installs
- 30+
- Rating
- 1.0(2)
- Downloads
- 0/day
Content Copy Finder
Up in the last 7 days:1,068#33,334by Eugene Jokerov6 years ago
This plugin allows you to check the texts for uniqueness and find plagiarism on other sites( for Russian Language ). Плагин позволяет проверить уника …
- Installs
- 10+
- Rating
- 5.0(1)
- Downloads
- 0/day
Plagiary Search
#36,343by KaizenCoders10 years ago
Find websites that copy/paste your content without authorization.
- Installs
- 10+
- Rating
- 5.0(1)
- Downloads
- 0/day
Plagium
Up in the last 7 days:2,765#40,634by Septet Systems11 years ago
Plagium is an innovative, fast, and easy-to-use means to check text against possible plagiarism or possible sources of origination.
- Installs
- 10+
- Rating
- 1.0(1)
- Downloads
- 0/day
plagia
Down in the last 7 days:5,022#40,903by shaymabraham5 years ago
a plugin that detect plagiarism in the content
- Installs
- 10+
- Rating
- 5.0(1)
- Downloads
- 0/day
AI Humanizer & AI Detector
Up in the last 7 days:997#47,184by Uncertify AI1 year ago
Detect AI content and humanize text using UncertifyAI. Get probability scores and improve your content quality.
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day
TruVisibility Plagiarism Checker
Up in the last 7 days:9,868#52,598by truvisibility9 years ago
Checks your posts for plagiarism before publishing. Provides checks history and detailed reports with plagiarized fragments and links to them.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day
CopyCat Blocker
Up in the last 7 days:7,249#64,081by Huzaifa Al Mesbah1 year ago
Protect your website content from being copied with a customizable text replacement system.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day
WordBinary Self Plagiarism Checker
Down in the last 7 days:15,579#67,880by wordbinaryapp5 months ago
Add a local browser-based self plagiarism checker that compares two pasted texts and highlights similar phrases.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day
ContentTrace
#74,049by Md Saddam Hossain Shakil8 months ago
Protect your WordPress content with invisible fingerprints and dual detection technology. Find who copied your posts and prove ownership.
- Installs
- <10
- Rating
- 5.0(1)
- Downloads
- 0/day