MrEditor
MrEditor is a Mac text editor built for opening, viewing, searching, and editing very large logs, CSV files, JSON, and other text files.
What is MrEditor?
MrEditor is a native macOS text editor for working with very large text files that ordinary editors struggle to open comfortably. It is designed for developers, analysts, administrators, and advanced users who need to inspect logs, CSV exports, JSON data, configuration files, and other text-heavy content. The app supports fast viewing and editing, search and filtering, side-by-side compare and merge, and structured handling for formats such as CSV and JSON. It also includes tools for line-based text cleanup, encoding and formatting tasks, and following growing log files in real time. MrEditor runs as a desktop Mac app and is aimed at workflows where large files, quick inspection, and precise corrections matter more than code authoring features.
Key features
- Open and edit very large text files with fast navigation
- Search, filter, and follow growing log files in real time
- Compare two documents side by side and merge selected differences
- View CSV and similar tabular text in a structured column layout
- Pretty-print and query JSON content inside the app
- Run line-based text transforms such as sort, deduplicate, renumber, and encode or decode text
Review app leftovers with diCleaner
Inspect caches, support files, containers, and login items before cleaning.
Safety overview
Status: Mostly safe
MrEditor is a legitimate Mac text editor for working with large text files. Access to files you open is normal for its purpose, and features such as log viewing, search, compare, and editing require reading and writing document contents. If you use optional AI-assisted diagnosis features, be mindful of what file excerpts or error messages you choose to send through those tools, especially if they contain sensitive data.
Recommendation: Keep MrEditor if you use it to inspect or edit large logs, CSV exports, JSON files, or other oversized text documents on your Mac. If you do not use it, removing it is usually fine and only affects your ability to open its documents and preferences in the app.
Common paths
/Applications/MrEditor.app
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