23 lines
738 B
Markdown
23 lines
738 B
Markdown
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---
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title: getFileExtension
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description: Returns file's extension guessing only by its mime type. Returns empty string on failure. Offline method. Can be called before authorization. Can be called synchronously
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---
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## Method: getFileExtension
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[Back to methods index](index.md)
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YOU CANNOT USE THIS METHOD IN MADELINEPROTO
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Returns file's extension guessing only by its mime type. Returns empty string on failure. Offline method. Can be called before authorization. Can be called synchronously
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### Parameters:
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| Name | Type | Required | Description |
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|----------|---------------|----------|-------------|
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|mime\_type|[string](../types/string.md) | Yes|Mime type of the file|
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### Return type: [Text](../types/Text.md)
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