How to use the Filename Cleaner
- Paste file names, one per line.
- Choose hyphens or underscores and letter case.
- Copy the clean names.
What does this tool do?
Spaces, accents and symbols in file names cause broken links on websites and errors on some systems. The cleaner converts accented letters (é → e), removes symbols and joins words with hyphens, while keeping the file extension.
Why use it?
- Web-safe image and document names.
- Avoid “%20” in URLs.
- Consistent naming across a project.
Example
“Résumé – Anna Müller 2026.pdf” becomes “resume-anna-muller-2026.pdf”.
Privacy
Everything you type is processed in your browser. Nothing you enter is sent to our servers or stored by us. There's no account to create and nothing to install.
Frequently asked questions
Why should I avoid spaces in file names?
Spaces become %20 in web addresses, break command-line scripts unless you add quotes, and can cause errors when uploading. Hyphens are the usual replacement for files on websites.
Can capital letters in file names cause problems?
Yes, on websites. Most web servers treat Photo.jpg and photo.jpg as different files, so a link with the wrong capitalisation breaks. Lowercase names avoid the problem.
Last reviewed by the M2Toolkit team.