# Facebook FBT > Facebook FBT file localization URL: https://store.crowdin.com/fbt Category: File Formats Type: System Author: Crowdin Facebook FBT is a natively supported file format, you can use it without an additional installation. Just upload it to your projects and start the localization. ## File Format Details | Attribute | Value | | --------- | ----- | | File Extension | .json | | [API Type](https://developer.crowdin.com/api/v2/#operation/api.projects.files.post) | fbt | | Source can be edited in Crowdin | No | | Generating translated files via [Bundles](https://support.crowdin.com/bundles/) | [Search Crowdin Store](https://store.crowdin.com/tags/string-exporter) | | Supports pluralization | No | | WYSIWYG Preview in the editor | No | | Supported types of contextual information | Text comments, Screenshots, In-Context | | Custom attributes | No | | Existing translations import possibility | Key-value mapping | ## Sample File ```json { "phrases": [ { "hashToText": { "40bd5bc10bd59fe020569068cfd7d814": "Your FBT Demo" }, "filepath": "src/example/Example.react.js", "line_beg": 110, "col_beg": 12, "line_end": 110, "col_end": 49, "type": "text", "desc": "title", "project": "fbt-demo-project", "jsfbt": "Your FBT Demo" }, { "hashToText": { "f75b97a97fa3772468477f17e0c0a160": "Construct sentences" }, "filepath": "src/example/Example.react.js", "line_beg": 112, "col_beg": 14, "line_end": 112, "col_end": 58, "type": "text", "desc": "header", "project": "fbt-demo-project", "jsfbt": "Construct sentences" }, { "hashToText": { "26d8c764cc951266855af9e375d97105": "Use the form below to see FBT in action." }, "filepath": "src/example/Example.react.js", "line_beg": 113, "col_beg": 14, "line_end": 113, "col_end": 91, "type": "text", "desc": "yet another header", "project": "fbt-demo-project", "jsfbt": "Use the form below to see FBT in action." } ], "translationGroups": [ { "fb-locale": "de_DE", "translations": { "40bd5bc10bd59fe020569068cfd7d814": { "tokens": [], "types": [], "translations": [ { "translation": "Ihre FBT-Demo", "variations": [] } ] }, "f75b97a97fa3772468477f17e0c0a160": { "tokens": [], "types": [], "translations": [ { "translation": "Sätze konstruieren", "variations": [] } ] }, "26d8c764cc951266855af9e375d97105": { "tokens": [], "types": [], "translations": [ { "translation": "Verwenden Sie das Formular unten, um FBT in Aktion anzuzeigen.", "variations": [] } ] } } } ] } ```