Language codes are used to show the correct language when added as a GET variable. For example, for English:
https://survalyzer.survalyzer.eu/ybbpojpshk?l=en
| Language in English | Local term in Runtime | Language Code |
| Albanian | Shqip | sq |
| Amharic | አማርኛ | am |
| Arabic | العربية | ar |
| Bengali | বাংলা | bn |
| Bosnian | Bosanski | bs |
| Bulgarian | Български | bg |
| Burmese | ဗမာ | my |
| Chinese (simplified) | 中文(简体) | zh-hans |
| Chinese (traditional) | 中文(繁體) | zh-hant |
| Chinese (Hong Kong) | 中文(香港特別行政區) | zh-hk |
| Croatian | Hrvatski | hr |
| Czech | Čeština | cs |
| Danish | Dansk | da |
| Dutch | Nederlands | nl |
| English | English | en |
| English (United States) | English (United States) | en-us |
| Estonian | Eesti | et |
| Filipino | Filipino | fil |
| Finnish | Suomi | fi |
| French | Français | fr |
| French (Switzerland) | Français (Suisse) | fr-ch |
| German | Deutsch | de |
| German (Switzerland) | Deutsch (Schweiz) | de-ch |
| Greek | Ελληνικά | el |
| Hebrew | עברית | he |
| Hindi | हिन्दी | hi |
| Hungarian | Magyar | hu |
| Icelandic | Íslensku | is |
| Indonesian | Indonesia | id |
| Irish | Gaeilge | ga |
| Italian | Italiano | it |
| Italian (Switzerland) | Italiano (Svizzera) | it-ch |
| Japanese | 日本語 | ja |
| Khmer | ខ្មែរ | km |
| Korean | 한국어 | ko |
| Lao | ລາວ | lo |
| Latvian | Latviešu | lv |
| Lithuanian | Lietuvių | lt |
| Macedonian | Македонски | mk |
| Malay | Melayu | ms |
| Nepali | नेपाली | ne |
| Norwegian | Norsk bokmål | nb |
| Persian | فارسی | fa |
| Polish | Polski | pl |
| Portuguese | Português | pt |
| Portuguese (Brazil) | Português (Brasil) | pt-br |
| Romanian | Română | ro |
| Russian | Русский | ru |
| Serbian | Srpski | sr |
| Sinhala | සිංහල | si |
| Slovak | Slovenčina | sk |
| Slovenian | Slovenščina | sl |
| Spanish | Español | es |
| Spanish (Mexico) | Español (México) | es-mx |
| Swedish | Svenska | sv |
| Tamil | தமிழ் | ta |
| Thai | ไทย | th |
| Turkish | Türkçe | tr |
| Ukrainian | Українська | uk |
| Urdu | اُردو | ur |
| Vietnamese | Tiếng Việt | vi |
ISO 639-2 Code – Front-End – Backend