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File Name Cleaner

Clean, sanitize, and normalize messy file names.

Batch filename cleanupPreserve extensionsLocal processingBrowser-based processing

File name cleaner tool

Paste one filename per line to clean a batch. Filename cleanup is processed locally in your browser.

Cleaned filename results

Review before renaming real files. Keep backups before applying large batch changes.

Processed

11

Changed

10

Unchanged

1

Duplicate outputs

0

Duplicate mode

number

Extensions

Preserved

Unsafe filename characters were removed.
Duplicate cleaned filename auto-numbered.
Reserved Windows filename adjusted.
1

Original

My Photo (Final).JPG

Cleaned

my-photo-final.jpg

2

Original

Product Image 01.png

Cleaned

product-image-01.png

3

Original

Résumé Draft.pdf

Cleaned

resume-draft.pdf

4

Original

Invoice: April/May.pdf

Cleaned

may.pdf

5

Original

Screenshot 2026-05-19 at 10.30.png

Cleaned

screenshot-2026-05-19-at-10-30.png

6

Original

logo@@@final.svg

Cleaned

logo-final.svg

7

Original

report copy .docx

Cleaned

report-copy.docx

8

Original

image.jpg

Cleaned

image.jpg

9

Original

image.jpg

Cleaned

image-1.jpg

10

Original

CON.txt

Cleaned

con-file.txt

11

Original

.env

Cleaned

env

Tool Support Layer

Batch filename cleanup
Extension preservation
Hyphen, underscore, or space separators
Lowercase, title case, or preserved casing
Duplicate numbering or removal
Prefix and suffix support
TXT and CSV downloads
Local browser processing

Dynamic Filename Insights

Cleaned 11 filenames and preserved extensions.
Hyphen separators are useful for web-friendly asset names.
Duplicate cleaned names are auto-numbered when needed.
Unsafe filename characters are removed for broader compatibility.
Preserving extensions helps keep files usable.

How Filename Cleaning Works

Filename cleaning converts messy names into safer, more consistent names
Spaces can be replaced with hyphens, underscores, or kept as spaces
Unsafe characters are removed because some systems do not allow them
Extensions are preserved by default so file types remain usable
Duplicate handling prevents two files from ending with the same cleaned name
Results should be reviewed before batch renaming

Filename Rules, Separators, Extensions, and Casing Explained

Filenames should avoid characters that are invalid on common systems
Hyphens are often best for web and SEO-friendly assets
Underscores are common in technical workflows
Spaces are readable but can be awkward in URLs or scripts
Extensions identify file type and should usually be preserved
Lowercase filenames are often easier to manage on websites
Length limits vary by system and storage platform

SEO, Compatibility, and File Organization Notes

Descriptive filenames can help humans understand files quickly
Web asset names should be short, readable, and URL-safe
Avoid keyword stuffing in image filenames
Consistent naming helps folder organization
Changing filenames after publishing can break links
Batch renaming should be reviewed before applying to real files
Always keep backups before renaming many files

Common Filename Cleaning Examples

My Photo (Final).JPG → my-photo-final.jpg
Product Image 01.png → product-image-01.png
Résumé Draft.pdf → resume-draft.pdf
Invoice: April/May.pdf → invoice-april-may.pdf
Screenshot 2026-05-19 at 10.30.png → screenshot-2026-05-19-at-10-30.png
logo@@@final.svg → logo-final.svg
report copy .docx → report-copy.docx
image.jpg → image-1.jpg when duplicated

Developer, CMS, Media, and Productivity Use Cases

Website image filenames
CMS media uploads
Product photo cleanup
SEO asset naming
Cloud folder organization
Developer asset folders
Exported screenshot cleanup
Document archive cleanup
Batch rename planning
Spreadsheet filename lists

Privacy and Local Processing Notes

Filenames are cleaned locally in the browser
No account is required
No backend storage is added
Filename text is not sent to a server by this tool
Copied or downloaded filename lists stay under your control
Avoid pasting confidential filenames unless necessary

Method Explanation

1. Paste one or more filenames into the tool
2. Split the input into one filename per line
3. Separate each basename from its extension when extension preservation is enabled
4. Trim spaces, normalize casing, and remove unsafe characters
5. Replace spaces with the selected separator
6. Collapse repeated separators and trim the result
7. Add prefix, suffix, length limits, and duplicate numbering where selected
8. Display before/after filenames for review and copying

Practical Filename Cleanup Workflows

Prepare website image names

Paste one image filename per line, preserve extensions, use hyphens and lowercase, then review before renaming files in your media folder.

Clean exported screenshots

Remove brackets and special characters, collapse repeated spaces, and add a project prefix when screenshots need a consistent archive format.

Handle duplicate filenames

Use automatic numbering when multiple cleaned names would match, especially before uploading product photos or CMS assets.

Related Text and Naming Tools

Slug GeneratorCreate matching URL-safe page slugs for content and product pages.Remove Extra SpacesClean copied filename lists before batch processing.Sort Text LinesSort cleaned filename lists for review or folder planning.Remove Duplicate LinesFind repeated filenames in exported lists before cleanup.

Frequently Asked Questions

A file name cleaner converts messy filenames into safer, more consistent filenames for uploads, websites, folders, CMS media libraries, and developer workflows.

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