String Generator

This is a string generation tool (for developers) that may be useful for checking the length of strings.
It is mainly used to create test data for string checking of input values. Feel free to use it.

String type	Length
0 characters
u+

String conversion

Description

Usage

Enter the type of string you want to create and the length of the string, and click the "Execute" button.
Then, the created string is output to the text area.

String type

Type	Description	Example
Fixed specification	Output the string using the fixed string.	Half-width "Half-width Alphabet (upper)", 5 chars → ABCDE "Half-width Alphabet (lower)", 5 chars → abcde "Half-width Number", 5 chars → 01234 "Half-width Symbol", 5 chars → !"#$% "Half-width Katakana", 5 chars → ｦｧｨｩｪ "Half-width Random", 5 chars → ｹRSN4 Full-width "Full-width Alphabet (upper)", 5 chars → ＡＢＣＤＥ "Full-width Alphabet (lower)", 5 chars → ａｂｃｄｅ "Full-width Number", 5 chars → ０１２３４ "Full-width Symbol", 5 chars → ！”＃＄％ "Full-width Hiragana", 5 chars → ぁあぃいぅ "Full-width Katakana", 5 chars → ァアィイゥ "Full-width Kanji (JIS lv.1)", 5 chars → 亜唖娃阿哀 ※ JIS level 1 kanji list (2,965 characters). "Full-width Kanji (JIS lv.2)", 5 chars → 弌丐丕个丱 ※ JIS level 2 kanji list (3,390 characters). "Full-width SJIS garbled", 5 chars → ―ソ能表Ы "Full-width Machine dependent", 5 chars → ①②③④⑤ "Full-width Surrogate pair", 5 chars → 𠀋𡈽𡌛𡑮𡢽 ※ A surrogate pair is 2 characters for 1 character. The number of displayed characters is 1, but the number of Unicode characters is 2. "Full-width Surrogate pair emoji", 5 chars → 🀄🃏🅰🅱🅾 ※ Emoji up to Unicode 10.0 using surrogate pairs. "Full-width Random", 5 chars → ブ’たＬＭ Other "Random", 5 chars → $￥:ＹＸ ※ 「Full-width Random」and「Random」do not include surrogate pairs.
Character specification	Output the string starting from any one character.	"A", 5 chars → ABCDE "a", 5 chars → abcde "😀", 5 chars → 😀😁😂😃😄
Code point specification	Output the string starting from any code point (Unicode hexadecimal).	u+ "0041", 5 chars → ABCDE u+ "0061", 5 chars → abcde u+ "1f600", 5 chars → 😀😁😂😃😄
String specification	Output the string using the specified string.	"ABCDE", 10 chars → ABCDEABCDE

String conversion

Control	Description	Example
Lower	Convert the string to lowercase.	ABCDE → abcde
Upper	Convert the string to uppercase.	abcde → ABCDE
Half width	Convert the string to half-width characters.	ＡＢＣＤＥ → ABCDE
Full width	Convert the string to full-width characters.	ABCDE → ＡＢＣＤＥ
Hiragana	Convert the string to Hiragana.	アイウエオ → あいうえお
Katakana	Convert the string to Katakana.	あいうえお → アイウエオ
Reverse	Sort the string in reverse order.	12345 → 54321
Shuffle	Shuffle the string.	12345 → 32451
Repeat	Repeat the string.	ABCDE → ABCDEABCDE
Append	Append the created string to the string.
Cut	Cut the string to the specified length or less.
Control	Description	Example
HTML escape	Convert special characters in the string to HTML entities.	<br> → <br>
HTML unescape	Convert HTML entities in the string to special characters.	<br> → <br>
HTML tag lower	Convert HTML tags in the string to lowercase.	<BR> → <br>
HTML tag upper	Convert HTML tags in the string to uppercase.	<br> → <BR>
HTML strip	Strip HTML tags in the string.	<h1>ABCDE</h1> → ABCDE
Char Ref 10 encode	Encode the string in numeric character reference (decimal) format.	ABCDE → ABCDE
Char Ref 16 encode	Encode the string in numeric character reference (hexadecimal) format.	ABCDE → ABCDE
Char Ref decode	Decode the string in numeric character reference format. Both decimal and hexadecimal formats are decoded. Character entity references are not decoded.	ABCDE → ABCDE
Control	Description	Example
New line remove	Remove newlines from the string.	ABCDE FGHIJ → ABCDEFGHIJ
New line append	Append newlines to the end of the string.	ABCDE.FGHIJ. → ABCDE. FGHIJ.
nl2br	Insert <br> before the newlines in the string.	ABCDE FGHIJ → ABCDE<br> FGHIJ
Row ascending	Sort the string in ascending order by row.	KLMNO UVWXY FGHIJ PQRST ABCDE → ABCDE FGHIJ KLMNO PQRST UVWXY
Row reverse	Sort the string in reverse order by row.	ABCDE FGHIJ KLMNO PQRST UVWXY → UVWXY PQRST KLMNO FGHIJ ABCDE
Row shuffle	Shuffle the string by row.	ABCDE FGHIJ KLMNO PQRST UVWXY → KLMNO UVWXY FGHIJ PQRST ABCDE
Duplicate line remove	Remove duplicate lines.	ABCDE ABCDE FGHIJ FGHIJ KLMNO → ABCDE FGHIJ KLMNO
Blank line remove	Remove blank lines.	ABCDE FGHIJ KLMNO → ABCDE FGHIJ KLMNO
Control	Description	Example
URL encode	Encode the string with URL encoding (percent encoding).	あいうえお → %E3%81%82%E3%81%84%E3%81%86%E3%81%88%E3%81%8A
URL decode	Decode the string with URL encoding (percent encoding).	%E3%81%82%E3%81%84%E3%81%86%E3%81%88%E3%81%8A → あいうえお
MIME encode	Encode the string with MIME header encoding.	あいうえお → =?UTF-8?B?44GC44GE44GG44GI44GK?=
MIME decode	Decode the string with MIME header encoding.	=?UTF-8?B?44GC44GE44GG44GI44GK?= → あいうえお
Base64 encode	Encode the string with Base64 encoding.	ABCDE → QUJDREU=
Base64 decode	Decode the string with Base64 encoding.	QUJDREU= → ABCDE
Unicode encode	Encode the string in Unicode (Universal character names) format.	ABCDE → \u0041\u0042\u0043\u0044\u0045
Unicode decode	Decode the string in Unicode (Universal character names) format. \uXXXX, \UXXXX, u+XXXX, U+XXXX formats are supported. You can also use surrogate pairs.	\u0041\u0042\u0043\u0044\u0045 → ABCDE

String Generator

Description

Usage

String type

String conversion

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