Bulk Renamer

The Bulk Renamer includes 8 independently toggleable function modules: Add Text (prefix, suffix, insert at position), Remove Text (first/last N chars, range, trim), Replace Text (plain or regex find & replace, space replacement), Change Case (10 modes including camelCase, snake_case, kebab-case), Numbering (prepend/append with custom start, step, padding, separator), Extension (change, remove, add, lowercase), Date/Time Stamp (7 formats including Unix timestamp), and Clean Up (remove special chars, accents, numbers, brackets, slugify, truncate).

Yes! Each function module has an independent toggle switch. You can enable any combination of the 8 functions simultaneously. For example, you could add a prefix, convert to lowercase, add sequential numbers, and append a date stamp — all in one batch operation.

Yes. In the Replace Text section, check the "Use Regular Expression" toggle to use full regex patterns. You can also toggle case sensitivity on or off independently. This enables powerful pattern matching like replacing all digits, matching complex file naming patterns, or restructuring filenames using capture groups.

The Change Case module supports 10 conversion modes: lowercase, UPPERCASE, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, dot.case, and tOGGLE cASE. Each mode is applied only to the filename base — extensions are preserved separately.

The Numbering module lets you prepend or append numbers to filenames. You can customize the starting number, the step increment (e.g., count by 2, 5, 10), zero-padding width (01, 001, 0001), and the separator character (underscore, hyphen, dot, space, or none).

Yes. The Extension module offers four actions: Keep Original, Change Extension (e.g., all to .txt), Remove Extension entirely, or Add Extension (append a second extension). You can also force-lowercase all extensions (e.g., .JPG → .jpg).

The Date/Time Stamp module supports 7 formats: YYYY-MM-DD, DD-MM-YYYY, MM-DD-YYYY, YYYYMMDD (compact), YYYY-MM-DD_HHmm (with time), YYYY-MM-DD_HHmmss (with seconds), and Unix Timestamp. Stamps can be prepended or appended with a custom separator.

The Clean Up module provides 5 toggleable cleanup operations: Remove Special Characters (!@#$%^&*), Remove Accents/Diacritics (é→e, ñ→n), Remove All Numbers, Remove Brackets & Parentheses, and Slugify (converts to web-safe lowercase-hyphen format). You can also set a maximum character limit to truncate long filenames.

No. The Bulk Renamer processes everything 100% locally inside your browser using JavaScript File APIs. No files are ever transmitted to any server. Your data stays completely private on your device.

Yes, the Bulk Renamer is completely free with no ads, no sign-ups, and no file limits. You can rename as many files as your browser memory allows — typically hundreds or thousands of files at once.