Filename Cleaner

Filename Cleaner

Clean up messy file names before you upload, share, or batch rename them.

Status: Live · Processing: local/browser-side only. Add file names, pick a cleanup style, preview the changes, then copy or download the result.

Use this when a folder is full of camera names, duplicated “final” files, weird punctuation, spaces from three operating systems, and other small acts of digital vandalism. It suggests cleaner names. It does not touch the real files unless you choose to use the exported plan.

Privacy: the rename planner runs in your browser. Pasted file names stay on your device. If you select files, the tool reads names only; it does not upload files, read file contents, or rename anything automatically. Normal CyganLabs page infrastructure may still load site assets, analytics, or ads; the local-processing claim is about the filenames and plan generated by the tool.

Safety: this creates suggestions and exports. Review the preview before using any command output. The tool is helpful, not psychic.

1Add names

Paste one per line, or choose files just to read their names.

2Pick a style

Start with Web-safe names unless you have a reason not to.

3Clean and copy

Review the preview, then copy names or download a CSV.

Add file names

One file name per line works best. No need to include folder paths unless you want the tool to strip them out.

File names

Clean file names Try sample names Clear

Or choose files to read their names

This only adds the selected file names to the box above. The files themselves are not uploaded.

Pick a cleanup style

These presets just change the options below. You can tweak them before or after cleaning.

Web-safe nameslowercase-with-hyphens Readable namesTitle Case With Spaces Number photos001-photo-name.jpg Shared-drive cleanuplowercase_with_underscores

Word separator Hyphen: my-file-name Underscore: my_file_name Spaces: My File Name

Letter case lowercase Keep current case Title Case

Optional: numbering and advanced cleanup

Add text at the start

Add text at the end

Number the files No numbering Add number at start Add number before extension

Start number

Number padding

If pasted paths appear, keep only the final file name. Replace smart quotes, long dashes, nonbreaking spaces, and similar punctuation. Remove punctuation that is awkward in web/shared-drive file names. Preserve file extensions. Normalize extensions to lowercase. Collapse repeated separators and trim leading/trailing junk. Auto-resolve duplicate output names by adding a number.

No cleaned names yet.

0 file names0 changes0 duplicates

Cleaned names

This is the easy copy/paste output.

Suggested file names

Copy cleaned names Download text list Download CSV

Review changes

Check the before/after list before using it. Duplicate warnings show up here instead of quietly making a mess.

Copy before/after plan

Advanced: terminal command drafts

Only use this if you are comfortable reviewing terminal commands. The safer default is copying the cleaned names or downloading CSV.

Command preview macOS/Linux shell Windows PowerShell

Copy command preview Download shell commands Download PowerShell commands

Commands use cautious quoting and interactive rename flags where possible, but you still need to review them. This tool cannot know your folder structure, permissions, sync client behavior, or whether two files differ only by case on your system.

Quick start

• Paste file names, one per line.
• Use Web-safe names unless you specifically need spaces or underscores.
• Click Clean file names.
• Review the before/after list, then copy cleaned names or download CSV.

When to use it

• Cleaning file names before uploading files to a website, LMS, shared drive, or project handoff folder.
• Turning camera exports, classroom downloads, and “final final v3” files into names humans can scan.
• Planning bulk renames safely before you touch the actual files.
• Generating CSV, shell, or PowerShell drafts when you want a repeatable rename plan.

What this does not do

• It does not rename files on your device. It creates suggestions and export files.
• It does not upload files or inspect file contents.
• It does not know whether your operating system treats names as case-sensitive, whether a sync client will object, or whether another file already exists in the target folder.
• It does not normalize dates intelligently. If you need date parsing, do that deliberately instead of letting a browser guess at your filing system.
• It does not make shell commands risk-free. Review before running them. Always.

Questions

Does this rename files for me?

No. It only creates suggested file names and exportable plans. Nothing on your device changes unless you use the output yourself.

Can I upload files?

You can select files to read their names locally in your browser. The files themselves are not uploaded to CyganLabs, and the tool does not read their contents.

Are file names uploaded?

No. The cleanup logic runs in the browser. The page does not intentionally send pasted file names, selected file names, generated plans, or command previews to CyganLabs or an AI service.

Which cleanup style should I choose?

Use Web-safe names for websites, URLs, and systems that behave better with lowercase letters and hyphens. Use Readable names when the files are mostly for humans. Use Number photos for camera dumps. Use Shared-drive cleanup when underscores fit your local convention.

Can I export commands?

Yes, but command export lives under Advanced on purpose. The tool can generate macOS/Linux shell and Windows PowerShell drafts. They are quoted carefully and skip duplicate-risk rows, but they still need review. Terminal commands are not where you want “seems fine” energy.

Related: Tools, Markdown Cleaner, Link Cleaner, and Start Here.