Rename

Rename is a browser-based batch file renaming tool that lets users rename multiple files at once without installing any software. All rename operations run locally in the browser, which means files never leave the user's computer and no data gets uploaded to external servers. The tool supports a range of renaming operations including adding prefixes and suffixes to filenames, finding and replacing text strings, inserting sequential numbering, changing letter case, and trimming unwanted characters. For more complex renaming needs, users can write custom JavaScript expressions that define advanced transformation rules, giving the tool flexibility comparable to dedicated desktop applications. The workflow is straightforward: users drag files into the browser interface, configure rename rules, see a live preview of how filenames will change before applying any modifications, and then execute the batch rename. This preview step helps prevent mistakes that could be time-consuming to undo. Rename is completely free to use and does not require account registration or email verification. The interface is available in multiple languages, making it accessible to users around the world. Photographers who need to rename hundreds of images from a shoot, developers organizing project assets, designers managing versioned files, and anyone else dealing with large collections of files will find this tool saves significant time compared to renaming files one by one. The tool works across operating systems since it runs in any modern web browser, whether on Windows, macOS, or Linux.