Frequently asked questions about plagiarism checkers.Best free plagiarism checkers in 2023 Plagiarism checker With a detection rate of 83%, Scribbr’s free plagiarism checker proved to be the most reliable. To find the best free plagiarism checker in 2023, we extensively tested and reviewed all popular tools to answer questions like, “How much plagiarism can they detect?” and “Are they actually free?” ConclusionAcross several test documents featuring 140 sample texts, the average plagiarism percentage detected is only 42% for entirely free tools and 47% for freemium tools. Try for free 10 Best Free Plagiarism Checkers in 2023 | Tested & Reviewed