If the files are large the chance for two files to be different and to have exactly the same size gets very low. It is extremely fast and you can use it for very large drives. However, in many cases, it can be helpful. File Size – searching for duplicates by file size is not a reliable method.A tutorial for the above two modes is available here: Find Similar Files and Similar File Names For example, it is useful if you want to find files that are named like: “My Essay (1).doc”, “My Essay March.doc”, “My Essay 2019.txt” and so on. Similar File Names – this is a fast scan mode that can find similar or duplicate file names.This article: Which Duplicate File Finder To Choose? explains why we have developed dedicated tools for those tasks. It can not find similar photos or similar audio files. This is mode can find similar excel, word, txt, pdf, archive and other documents. In short, you should use it on a smaller subset of files. It is very precise, as a result, it is the slowest of all. Similar Files – This mode can find similar documents.For example, the CRC or checksum of the file that many such tools are using may identify completely different files as duplicates. Such tools produce incorrect results and may lead to permanent loss of data. Many tools on the market may perform faster as they use CRC checksums. While it is not the fastest of all the supported modes, it is the one that guarantees to list true duplicates.
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