Plagiarism Checker.co
Online plagiarism checker with similarity score and source matching
Overview
Plagiarism Checker.co is an online plagiarism detection tool from PlagiarismSoftware.net that scans text against billions of indexed web pages and academic sources to identify duplicated content. It returns percentage similarity scores, highlights matched passages, and links back to original sources, helping students, teachers, and content writers verify originality. The tool supports multiple languages and document upload formats. Listed paid plans start around USD 20 per month for higher word limits and faster scans.
Key Features
6 capabilities across the Plagiarism Checker workflow.
Similarity Percentage
Returns a clear percentage score showing how much of the submitted text matches existing sources.
Source Highlighting
Flags matched passages and links to the original URLs where duplicate content was found.
Document Upload
Accepts DOC, DOCX, PDF, and TXT uploads in addition to direct copy-paste input.