# Stringsdict > Localization format used to define strings with plural forms for OS X and iOS apps URL: https://store.crowdin.com/stringsdict Category: File Formats Type: System Author: Crowdin Stringsdict 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 | .stringsdict | | [API Type](https://developer.crowdin.com/api/v2/#operation/api.projects.files.post) | stringsdict | | 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 | Yes | | WYSIWYG Preview in the editor | No | | Supported types of contextual information | Text comments, Screenshots | | Custom attributes | No | | Existing translations import possibility | Key-value mapping | ## Sample File ```xml files.uploaded NSStringLocalizedFormatKey %#@count@ count NSStringFormatSpecTypeKey NSStringPluralRuleType NSStringFormatValueTypeKey d one %d file uploaded other %d files uploaded files.deleted NSStringLocalizedFormatKey %#@count@ count NSStringFormatSpecTypeKey NSStringPluralRuleType NSStringFormatValueTypeKey d one %d file deleted other %d files deleted ```