What this tool does
Bulk File Renamer previews filename changes, numbering, extension preservation, collisions, and shell commands.
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📁 Bulk File Renamer
Preview filename changes and generate shell-safe rename commands before touching files.
Why it is useful
It helps organize photos, exports, documents, datasets, and project assets with consistent names.
How it works
Paste filenames, define replacement and numbering rules, then inspect the before/after mapping.
Best input
Use a small batch first and confirm numbering, extensions, and date prefixes.
Workflow tip
Keep original files backed up before running generated rename commands.
Privacy note
Filename previews run locally in your browser.
Important limitation
The generated commands are examples. Review paths and quoting before running them in a shell.
Quick answers
Will it upload my files?
No. It only processes pasted filenames.
Can this rename files directly?
No. It previews and generates commands you can review.
Common Use Cases
Normalize photo exports
Preview date prefixes, numbering, and extension preservation before renaming a batch from a camera or phone.
Prepare dataset filenames
Generate consistent names for CSVs, images, or documents while spotting collisions before shell commands run.
Share a reviewable rename plan
Copy the before/after CSV or shell-safe commands so another person can approve the batch.