Choose Organize Tools for intentional batch renaming
This category is for deliberate filename changes across multiple files. Its current tool, Batch File Renamer, lets you apply naming rules you choose and review the proposed results before downloading renamed copies. That is different from cleaning filenames for portability or inspecting file contents.
Use Filename Sanitizer when the goal is a portable naming policy, and use Duplicate File Finder when you need to identify byte-identical files before organizing them.
What Batch File Renamer can change
Batch File Renamer builds proposed names from controls such as:
- Prefixes and suffixes.
- Find and replace, including optional regular expressions and case sensitivity.
- Case conversion and sequence numbering with configurable position, start, step, and padding.
- Date tokens based on today or each file's last-modified date.
- Image-dimension tokens when the browser can read the dimensions from an image file.
The tool can keep the original extension or apply a different extension to the downloaded name. Changing an extension does not convert the file contents; the page shows a content-mismatch warning when applicable. An optional light character-cleanup preset is available, but it is not the full portable-naming policy provided by Filename Sanitizer.
Preview, exclude, and download the renamed copies
Open Batch File Renamer and add individual files or use folder selection where the browser supports it. The tool shows each original-to-proposed mapping so you can review the result before downloading.
- Set the naming rules and inspect the proposed names.
- Uncheck individual files you want to leave out without removing them from the list.
- Resolve any flagged collisions. Export is blocked by default; automatic collision resolution must be enabled explicitly.
- Download one included file as a renamed copy, or download multiple included files as a ZIP with CSV and JSON mapping manifests.
The workflow creates downloads rather than renaming, moving, or deleting the original files. Folder selection is not available in every browser, so use individual file selection when that option is unsupported.
Renaming is not conversion or file analysis
A filename tells software how a file is named; changing its extension does not change the underlying file bytes or convert its format. If you need portable and safe naming rules rather than a user-defined organizational template, use Filename Sanitizer.
If the task is to find files that have identical contents before you organize them, use Duplicate File Finder. It analyzes files by content hash; it does not replace the intentional naming workflow in Batch File Renamer.