FILENAME CLEANUP

Safe Filename Generator & Filename Sanitizer

Clean and sanitize filenames online for free without registration. Remove unsafe characters, normalize spaces, preserve extensions, and avoid reserved Windows names.

✓ Runs in your browser ✓ Filename stays local ✓ Free & no signup

01 · INPUT

Sanitize a filename

LOCAL

Original filename

Replace spaces Remove unsafe symbols Normalize to ASCII Lowercase Avoid reserved Windows names Allow non-Latin characters

Separator Maximum length

Enter a filename to begin.

✦

Local processing

Only the filename text is processed in the browser. No file upload or account is required.

02 · RESULT

Safe filename

No filename generated yet

Enter a filename and click “Sanitize filename” to see the cleaned result.

01Clean symbols

Removes or replaces characters that can cause path, URL, or cross-platform filename problems.

02Cross-platform naming

Trims trailing dots/spaces and avoids reserved Windows names such as CON and NUL.

03Keeps the extension

Preserves the file extension such as PDF, ZIP, JPG, or DOCX while cleaning the base name.