App Download Ads

1. Ad Insertion Rules
2. Supported character types, space type and Symbol types (for Titles, Descriptions)

Precautions

Precautions and prohibitions for Ad Insertion
Information Icons
Rules for Using Characters and Symbols

1 Ad Insertion Rules

Keywords	Number of characters	Up to 80 characters
App ID / Package name	Cautions	It is required to enter the App ID for iOS, and Package name for Android.
Titles Descriptions	Number of characters	Title 1	Up to 25 characters
		Description 1	Up to 35 characters
		Description 2	up to 35 characters
		How to Count	Count as 2 both for full-width char and half-width Katakana char, count as 1 for half-width alphanumeric
	Supported character types, space type and Symbol types	See following items 2. Supported character types, space type and Symbol types (for Titles, Descriptions)
	Keyword Insertion,IF function	The same restrictions on the number of characters for titles/descriptions must be followed, even when the listed functions is used. If the number of characters exceeds the limit due to system specifications of Yahoo! Ads, it is judged that the guideline is not violated.
Landing Page URL	Number of characters	1,024byte
	How to Count	Count as 1 byte for half-width character, and as 3 byte for full-width character
	Supported characters	Single byte alphanumeric characters, Japanese characters（RFC3986,RFC3987）
	Cautions	*Required Only URLs that transit to either App Store or Google Play is allowed.
Tracking URL	Number of characters	1,024byte
	How to Count	Count as 1 byte for half-width character, and as 3 byte for full-width character
	Supported characters	Single byte alphanumeric characters, Japanese characters（RFC3986,RFC3987）
	Cautions	If you select the iOS, this item is available.
Custom Parameters	name	Number of characters		16byte
		How to Count		1 byte*Full-width is not supported.
		Supported characters		half-width alphanumeric characters
	value	Number of characters		200byte
		How to Count		Count as 1 byte for half-width character, and as 3 byte for full-width character
		Supported characters		Single byte alphanumeric characters, Japanese characters（RFC3986,RFC3987）
	Cautions	If you select the iOS, this item is available.

2. Supported character types, space type and Symbol types (for Titles, Descriptions)

Supported Character Types

Hiragana	Double byte
Katakana	Double byte
Alphanumeric	Double byte/Single byte

Supported Space Type

Space

Single byte

Supported Symbol Types

Types	Symbols
Parentheses	（）【】『』「」［　］＜＞《》 ≪ ≫ (Double byte) ( ) [　] (Single byte) Only one set of each　symbol can be used for title and description, except for ”（）” (parenthesis in double byte) and ”( )” (parenthesis in single byte). Only ”（）” (parenthesis in double byte) and ”( )” (parenthesis in single byte) is available on Ad Customizer.
Quotation mark	‘’ ` ´ “ ” (Double byte) " '(Single byte)
Punctuation mark	。、 (Double byte)
Middle dot	・ (Double byte)
Comma	， (Double byte) , (Single byte)
Dot	． (Double byte). (Single byte)
Wave dash	〜（Wave dash, Double byte）Unicode: U+301C ～（Tilde, Double byte）Unicode: U+FF5E
Percent	％ (Double byte) %（Single byte）
Ampersand	＆ (Double byte) &（Single byte）
Colon/semicolon	：； (Double byte) : ; (Single byte)
Three dot leader	… (Double byte)
Hyphen	‐ (Double byte) - (Single byte)
Operator	＋－ ± × ÷ ＝ ≠ ∞ (Double byte) - +(Single byte)
Slash	／ (Double byte) /（Single byte）
Question/exclamation mark	？！ (Double byte) ? ! (Single byte)
Other	￥＠＃ ♯ (Double byte) ¥ @ # $（Single byte）
Greek /Cyrillic characters	ΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩ (Double byte) αβγδεζηθικλμνξοπρστυφχψω (Double byte) АБВГДЕЁЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯ (Double byte) абвгдеёжзийклмнопрстуфхцчшщъыьэюя (Double byte)

*No limit in number of punctuation marks, middle dots, commas, and periods.