Operation - Remove: Deletes every targeted letter. With Clean up double spaces on, the extra space left when a whole word disappears is collapsed into a single space.
Operation - Replace: Pick an accented character for each vowel from the dropdowns, or type comma-separated from=to rules in the Custom rules box. Leave a vowel on "Keep unchanged" to leave it alone.
Use accented vowels: On by default. When on and Vowels is selected, a dropdown lets you pick one accent style – Acute, Grave, Circumflex or Umlaut – that is applied to all vowels at once. Turn it off to hide the dropdown and replace any letter with a custom rule instead.
Custom rules (optional): A comma-separated list of from=to rules that work on any character, for example a=@, b=#, o= (leave the right side empty to delete). This is the way to replace consonants, symbols or extra letters.
Accent character map: Copy any character below when you need an accented vowel:
| Vowel | Acute | Grave | Circumflex | Umlaut |
| a | á | à | â | ä |
| e | é | è | ê | ë |
| i | à | ì | î | ï |
| o | ó | ò | ô | ö |
| u | ú | ù | û | ü |
| y | ý | – | – | ÿ |
Operation - Duplicate: Repeats each targeted letter the chosen number of times, so a repeat count of 2 turns cat into caat.
Targets - Vowels / Consonants: Turn on Vowels to act on a, e, i, o, u, or Consonants to act on the rest of the alphabet. Both can be on at the same time.
Include "y": Treats y as a vowel, so it is removed or duplicated alongside the other vowels.
Include accented vowels: Adds accented vowels such as à , é, ï, ö, ü to the vowel set, so letters with diacritics are handled like their plain counterparts.
Additional letters/symbols: Lets you type extra characters to act on, such as a symbol used in place of a vowel or uppercase letters when case is sensitive.
Letters to skip: Keeps the typed letters untouched even when they would otherwise match a target.
Case sensitive: When on, only lowercase targets are acted on (uppercase letters are preserved unless you add them in Additional letters). When off, both cases are treated alike.
Two-pass substitution: In Replace mode, runs all the rules a second time, so a letter that was changed by one rule can be changed again by a later rule.
Statistics panels: The Input and Output panels each show the total characters, letters, vowels, consonants and punctuation marks, updating live as you type.
Copy & Download: "Copy" puts the output on your clipboard for pasting elsewhere; "Download" saves it as a text file.