Katakana (ja)
Letter case
Delete line
Delete space
Delete fullwidth Space
Delete tab

Text Formatter

This is a tool that Unify uppercase and lowercase, removing spaces, and indenting.

  • Symbol: !”#$%&()*+,-./:;<=>?@[]^_`{|}~
  • Converts automatically when entering text or changing settings.
  • This tool does not communicate. This site does not collect input values.

Convenient Regex

If you master regular expressions (regex), you can do most of the things without tools. Regex is a technology that allows text search under various conditions.

By the way, this tool also uses regex in the program. For example, “Delete blank lines” is a delete the character that matches the regex ^\s*?$(\r\n|\r|\n)?. This symbol is called a metacharacter and has an abstract meaning. Regex is searching by combining these metacharacters.

Metacharacter Meaning
^ Beginning of line
\s*? 0 to n whitespace
$ End of line
(\r\n\|\r\|\n)? 0 to 1 line feed

I also wrote an article on regex, so please have a look if you like.

About Me

Hirota Yano / Programmer
Born in 1988, based in Japan


日本語 / English