Supported languages

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Supported languages for indexing features
Supported languages for machine learning models
Supported languages for JavaScript search framework

The Coveo Platform can index content written in 57 languages. Coveo Machine Learning (Coveo ML) models and Coveo JavaScript Search Framework user interfaces also support a wide array of languages.

The following sections present the features supported by each language:

Supported languages for indexing features
Supported languages for machine learning models
Supported languages for JavaScript search framework

Supported languages for indexing features

The table below lists the languages supported by Coveo for indexing content, including the specific language features available for each.

Notes

Coveo can index content in languages other than those listed below as long as:
- The language uses spaces to separate words.
- The item encodes characters in Unicode.
For languages meeting these requirements, most language features are supported, except language detection, word decompounding, and stemming.
Since result ranking is partially based on summarization and key-concept extraction techniques, English, French, German, and Spanish queries return the most relevant results consistently.
Coveo indexing does not support word decompounding, which is typically used for languages such as German, Dutch, Finnish, Danish, Swedish, and Norwegian.

Language Locale Encoding, excerpt, language detection, and thesaurus Stemming Did you mean

English^[2]

en

French^[2]

fr

German^[2]

de

Spanish^[2]

es

Danish

da

Dutch

nl

Finnish

fi

Hungarian

hu

Italian

it

Norwegian

no

Portuguese

pt

Swedish

sv

Turkish

tr

Catalan

ca

Romanian

ro

Valencian

ca

Armenian

hy

Russian

ru

Chinese (traditional and simplified)^[1],[3]

zh

Greek

el

Hindi

hi

Japanese^[1],[3]

ja

Korean^[1],[3]

ko

Thai

th

Arabic

ar

Basque

eu

Lithuanian

lt

Czech

cs

Indonesian

id

Polish

pl

Albanian

sq

Afrikaans

af

Belarusian

be

Bulgarian

bg

Burmese

my

Croatian

hr

Esperanto

eo

Estonian

et

Filipino

fil

Hebrew

he

Icelandic

is

Kazakh

kk

Latvian

lv

Macedonian

mk

Malay

ms

Moldovan

ro

Mongolian

mn

Norwegian Bokmål

nb

Persian

fa

Serbian

sr

Slovak

sk

Slovenian

sl

Swahili

sw

Tagalog

tl

Ukrainian

uk

Uzbek

uz

Vietnamese

vi

1. Wildcards in queries are not supported.

2. The index can also generate item summaries.

3. A specialized tokenizer based on dictionaries is used to split CJK characters into words, which can impact search results relevancy.

Supported languages for machine learning models

The following table outlines the languages supported by the Coveo Machine Learning (Coveo ML) models.

Notes

ART, QS, PQS, DNE, CR, and IAPR models can support content in languages other than those listed in the following table as long as the language uses spaces to separate words. For languages that meet this requirement, most language features are supported, except language detection, word decompounding, and stemming.
Coveo machine learning models don’t support word decompounding, which is typically used for languages such as German, Dutch, Finnish, Danish, Swedish, and Norwegian.

Available ML models:

Automatic Relevance Tuning (ART)
Case Classification (CC)
Content Recommendations (CR)
Dynamic Navigation Experience (DNE)
Intent-Aware Product Ranking (IAPR)
Predictive Query Suggestions (PQS)
Product Recommendations (PR)

Note

PR models are language agnostic, meaning that they can recommend products regardless of the language used in their metadata.
Query Suggestions (QS)
Relevance Generative Answering (RGA)
Semantic Encoder (SE)
Smart Snippets

Language Locale ART, QS, PQS, DNE, CR, and IAPR Smart Snippets, CC, RGA, and SE

Language	Locale	ART, QS, PQS, DNE, CR, and IAPR
English	`en`
French	`fr`
German	`de`
Spanish	`es`
Danish	`da`
Dutch	`nl`
Finnish	`fi`
Hungarian	`hu`
Italian	`it`
Norwegian	`no`
Portuguese	`pt`
Swedish	`sv`
Turkish	`tr`
Catalan	`ca`
Romanian	`ro`
Valencian	`ca`
Armenian	`hy`	^[1]
Russian	`ru`
Chinese (traditional and simplified)	`zh`
Greek	`el`
Hindi	`hi`
Japanese	`ja`
Korean	`ko`
Thai	`th`
Arabic	`ar`
Basque	`eu`
Lithuanian	`lt`
Czech	`cs`	^[1]
Indonesian	`id`
Polish	`pl`	^[1]
Albanian	`sq`	^[1]
Afrikaans	`af`	^[1]
Belarusian	`be`	^[1]
Bulgarian	`bg`	^[1]
Burmese	`my`	^[1]
Croatian	`hr`	^[1]
Esperanto	`eo`	^[1]
Estonian	`et`	^[1]
Filipino	`fil`	^[1]
Hebrew	`he`	^[1]
Icelandic	`is`	^[1]
Kazakh	`kk`	^[1]
Latvian	`lv`	^[1]
Macedonian	`mk`	^[1]
Malay	`ms`	^[1]
Moldovan	`ro`	^[1]
Mongolian	`mn`	^[1]
Norwegian Bokmål	`nb`	^[1]
Persian	`fa`	^[1]
Serbian	`sr`	^[1]
Slovak	`sk`	^[1]
Slovenian	`sl`	^[1]
Swahili	`sw`	^[1]
Tagalog	`tl`	^[1]
Ukrainian	`uk`	^[1]
Uzbek	`uz`	^[1]
Vietnamese	`vi`	^[1]

English

en

French

fr

German

de

Spanish

es

Danish

da

Dutch

nl

Finnish

fi

Hungarian

hu

Italian

it

Norwegian

no

Portuguese

pt

Swedish

sv

Turkish

tr

Catalan

ca

Romanian

ro

Valencian

ca

Armenian

hy

^[1]

Russian

ru

Chinese (traditional and simplified)

zh

Greek

el

Hindi

hi

Japanese

ja

Korean

ko

Thai

th

Arabic

ar

Basque

eu

Lithuanian

lt

Czech

cs

^[1]

Indonesian

id

Polish

pl

^[1]

Albanian

sq

^[1]

Afrikaans

af

^[1]

Belarusian

be

^[1]

Bulgarian

bg

^[1]

Burmese

my

^[1]

Croatian

hr

^[1]

Esperanto

eo

^[1]

Estonian

et

^[1]

Filipino

fil

^[1]

Hebrew

he

^[1]

Icelandic

is

^[1]

Kazakh

kk

^[1]

Latvian

lv

^[1]

Macedonian

mk

^[1]

Malay

ms

^[1]

Moldovan

ro

^[1]

Mongolian

mn

^[1]

Norwegian Bokmål

nb

^[1]

Persian

fa

^[1]

Serbian

sr

^[1]

Slovak

sk

^[1]

Slovenian

sl

^[1]

Swahili

sw

^[1]

Tagalog

tl

^[1]

Ukrainian

uk

^[1]

Uzbek

uz

^[1]

Vietnamese

vi

^[1]

1. Language detection and stemming are not supported.

Supported languages for JavaScript search framework

This table presents the languages supported by the JavaScript Search Framework for building user interfaces with Coveo.

Language Locale Search UI support

Language	Locale	Search UI support
English	`en`
French	`fr`
German	`de`
Spanish	`es`
Danish	`da`
Dutch	`nl`
Finnish	`fi`
Hungarian	`hu`
Italian	`it`
Norwegian	`no`
Portuguese	`pt`
Swedish	`sv`
Turkish	`tr`
Catalan	`ca`
Romanian	`ro`
Valencian	`ca`
Armenian	`hy`
Russian	`ru`
Chinese (traditional and simplified)	`zh`
Greek	`el`
Hindi	`hi`
Japanese	`ja`
Korean	`ko`
Thai	`th`
Arabic	`ar`
Basque	`eu`
Lithuanian	`lt`
Czech	`cs`
Indonesian	`id`
Polish	`pl`
Albanian	`sq`
Afrikaans	`af`
Belarusian	`be`
Bulgarian	`bg`
Burmese	`my`
Croatian	`hr`
Esperanto	`eo`
Estonian	`et`
Filipino	`fil`
Hebrew	`he`
Icelandic	`is`
Kazakh	`kk`
Latvian	`lv`
Macedonian	`mk`
Malay	`ms`
Moldovan	`ro`
Mongolian	`mn`
Norwegian Bokmål	`nb`
Persian	`fa`
Serbian	`sr`
Slovak	`sk`
Slovenian	`sl`
Swahili	`sw`
Tagalog	`tl`
Ukrainian	`uk`
Uzbek	`uz`
Vietnamese	`vi`

English

en

French

fr

German

de

Spanish

es

Danish

da

Dutch

nl

Finnish

fi

Hungarian

hu

Italian

it

Norwegian

no

Portuguese

pt

Swedish

sv

Turkish

tr

Catalan

ca

Romanian

ro

Valencian

ca

Armenian

hy

Russian

ru

Chinese (traditional and simplified)

zh

Greek

el

Hindi

hi

Japanese

ja

Korean

ko

Thai

th

Arabic

ar

Basque

eu

Lithuanian

lt

Czech

cs

Indonesian

id

Polish

pl

Albanian

sq

Afrikaans

af

Belarusian

be

Bulgarian

bg

Burmese

my

Croatian

hr

Esperanto

eo

Estonian

et

Filipino

fil

Hebrew

he

Icelandic

is

Kazakh

kk

Latvian

lv

Macedonian

mk

Malay

ms

Moldovan

ro

Mongolian

mn

Norwegian Bokmål

nb

Persian

fa

Serbian

sr

Slovak

sk

Slovenian

sl

Swahili

sw

Tagalog

tl

Ukrainian

uk

Uzbek

uz

Vietnamese

vi