Duplicate Filename Remover
Paste a list of filenames and automatically resolve duplicates by appending a numbered suffix like " (1)" to repeated occurrences, preserving each file's extension.
Resolved File Names
How to Use the Duplicate Filename Remover
Paste a list of file names, one per line. The tool scans for names that appear more than once and automatically renames every repeated occurrence after the first by appending a numbered suffix, like " (1)" or " (2)", while correctly preserving the file extension. The result is a fully resolved list where every name is unique.
Example
A list containing report.pdf, image.png, report.pdf again, and report.pdf a third time resolves to report.pdf, image.png, report (1).pdf, and report (2).pdf — the extension stays attached to the end of each renamed file.
Common Use Cases
- Preparing a list of files for upload to a system that doesn't allow duplicate names.
- Resolving naming conflicts before merging files from multiple folders or backups.
- Cleaning up an export or batch job that accidentally produced repeated file names.
FAQs
- How is this different from the Duplicate File Name Checker? The Duplicate File Name Checker only identifies and flags which filenames are duplicated, without changing anything. This tool actually resolves the duplicates by renaming each repeated occurrence with a numbered suffix, giving you a ready-to-use, all-unique list.
- Does it rename the first occurrence of a repeated name? No — the first occurrence always keeps its original name; only the second, third, and later occurrences get a numbered suffix appended.
- What happens with a file that has no extension, like a folder name? The numbered suffix is simply appended to the end of the name — since there's no extension to preserve, nothing special happens with the dot placement.