Bulk File Renamer
About Tool
Renaming dozens or hundreds of files one by one is a repetitive task that is prone to errors. This bulk renamer provides a powerful interface to apply systematic changes to entire batches of files simultaneously. With options for find-and-replace, prefixes, suffixes, and automated numbering, you can transform a messy folder of generic filenames into an organized collection in seconds.
One of the standout features of this tool is its flexibility in how it executes the renaming. While you can download the renamed files as a ZIP, the tool also offers the ability to generate a .bat script for Windows or a .sh script for Mac and Linux. This is a game-changer for large file sets where downloading and re-uploading a ZIP would be inefficient; you simply run the script locally to rename the files already sitting on your hard drive.
Powerful Renaming Logic
The tool includes several "Action Modes" to handle different scenarios. You can use Find and Replace to swap out specific strings, such as changing "Draft" to "Final" across all documents. The Numbering feature is perfect for photographers or designers who need to sequence files (e.g., Image_01, Image_02). If you notice that your filenames contain characters that might break a web upload, you should first use the Filename Sanitizer to clean them up before applying your final naming pattern.
Local and Secure Workflow
Privacy is a core component of this utility. The file processing happens entirely in your browser's memory, meaning your file contents are never accessed or uploaded. For those managing complex data structures, this tool pairs well with the File Splitter, allowing you to split a large file and then immediately rename the resulting parts to match a specific project convention.
How to Execute a Batch Rename
- Click Select Files to load the items you want to rename.
- Enter your Find and Replace strings if doing a substitution.
- Add a Prefix or Suffix to the beginning or end of every name.
- Set a Numbering start point if you want sequential labels.
- Choose your output format (ZIP, .bat, or .sh) and click Execute Rename Action.
Frequently Asked Questions
Will this tool change the file extensions?
The tool focuses on the filename itself. Unless you explicitly include the extension in your "find and replace" logic, the original extensions will remain unchanged.
How do the .bat and .sh scripts work?
These are simple text files containing commands. When you run them in your folder, they tell your operating system to rename the files according to the rules you set in the tool.
Can I undo a bulk rename?
If you use the ZIP method, your original files are safe on your drive. If you run a script, you should be careful, as there is no "undo" button for a system-level rename script.
Can I rename files from different folders at once?
The tool can process any files you select, but the generated scripts usually expect the files to be in the same directory where the script is executed.
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