Frequently Asked Question
The File Renamer is a web-based tool that allows you to easily rename multiple files at once with various customization options like find/replace, adding text, numbering, changing case, and more.
You can rename any type of file like documents, images, videos, audio files, etc. The tool works with all file extensions.
There’s no strict limit, but performance may be affected if you try to process thousands of files at once. For best results, we recommend processing files in batches of 100 to 200 files at a time.
Absolutely! All file processing happens in your browser – your files are never uploaded to any server, ensuring complete privacy and security.
Yes, you can click the “Preview” button next to each file or click on the thumbnail to see a larger preview of the file.
The tool doesn’t automatically deduplicate. When zipping, duplicate names may be overwritten. Use the numbering feature or double-check your new names before downloading.
Yes, check the “Retain original name” option to preserve the original filenames while applying additional modifications.
Yes, you can preview any file and click the “Download” button in the preview window to download it individually.
- Click Sample CSV to download a template.
- Open it in Excel, Google Sheets, or any text editor.
- The first column is the original filename, the second is the new name.
- Save as CSV and click Upload CSV.
- The tool matches rows by original filename (order doesn’t matter).