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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 

KeywordsNumber of charactersUp to 80 characters

App ID /
Package name

CautionsIt is required to enter the App ID for iOS, and Package name for Android.
Titles DescriptionsNumber of charactersTitle 1Up to 25 characters
Description 1Up to 35 characters
Description 2up to 35 characters
How to CountCount 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 typesSee following items
2. Supported character types, space type and Symbol types (for Titles, Descriptions)
Keyword Insertion,IF functionThe 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 URLNumber of characters1,024byte
How to CountCount as 1 byte for half-width character, and as 3 byte for full-width character
Supported charactersSingle byte alphanumeric characters, Japanese characters(RFC3986,RFC3987)
Cautions*Required
Only URLs that transit to either App Store or Google Play is allowed.
Tracking URLNumber of characters1,024byte
How to CountCount as 1 byte for half-width character, and as 3 byte for full-width character
Supported charactersSingle byte alphanumeric characters, Japanese characters(RFC3986,RFC3987)
CautionsIf you select the iOS, this item is available.
Custom ParametersnameNumber of characters16byte
How to Count1 byte*Full-width is not supported.
Supported charactershalf-width alphanumeric characters
valueNumber of characters200byte
How to CountCount as 1 byte for half-width character, and as 3 byte for full-width character
Supported charactersSingle byte alphanumeric characters, Japanese characters(RFC3986,RFC3987)
CautionsIf you select the iOS, this item is available.


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

Supported Character Types

HiraganaDouble byte
KatakanaDouble byte
AlphanumericDouble byte/Single byte


Supported Space Type

SpaceSingle byte


Supported Symbol Types

TypesSymbols
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 charactersΑΒΓΔΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩ (Double byte)
αβγδεζηθικλμνξοπρστυφχψω (Double byte)
АБВГДЕЁЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯ (Double byte)
абвгдеёжзийклмнопрстуфхцчшщъыьэюя (Double byte)
*No limit in number of punctuation marks, middle dots, commas, and periods.