# WOPIFileInfo

Location: [gRPC API](https://developer.m-files.com/APIs/gRPC-API/index.md) > [Reference](https://developer.m-files.com/APIs/gRPC-API/Reference/index.md) > [Messages](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/index.md)

HTML version: https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.WOPIFileInfo/

Struct for WOPI file information.

- **Full name:** `MFiles.WOPIFileInfo`
- **Proto file:** [`mfiles/structs.proto`](https://developer.m-files.com/APIs/gRPC-API/downloads/proto/mfiles/structs.proto)

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## Fields

| Field | Type | Number | Description |
|---|---|---|---|
| <a id="f-title"></a>`title` | `string` | 1 | The title of the file. |
| <a id="f-extension"></a>`extension` | `string` | 2 | File extension, not including the dot (e.g. "doc"). |
| <a id="f-created_by_user"></a>`created_by_user` | `string` | 3 | The creator of this shared Link. |
| <a id="f-logical_size"></a>`logical_size` | `int64` | 4 | The logical size of the file in bytes. |
| <a id="f-change_time"></a>`change_time` | [`google.protobuf.Timestamp`](https://protobuf.dev/reference/protobuf/google.protobuf/#timestamp) | 5 | The time in UTC the file was last written to or its attributes were changed. |
| <a id="f-obj_ver"></a>`obj_ver` | [`ObjVer`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.ObjVer/index.md) | 6 | The object version referenced by the shared link. |
| <a id="f-file_ver"></a>`file_ver` | [`FileVer`](https://developer.m-files.com/APIs/gRPC-API/Reference/Messages/MFiles.FileVer/index.md) | 7 | The file version referenced by the shared link. |

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## Used by methods

- [IRPCSharedLinksPublic.GetWOPIFileInfo](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCSharedLinksPublic/GetWOPIFileInfo/index.md): Gets information about the file of a link for Office for the web (WOPI) operations. Used by M-Files clients; applications rarely call it.

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## Used in fields

- [`GetWOPIFileInfoResponse.result`](https://developer.m-files.com/APIs/gRPC-API/Reference/MFiles.IRPCSharedLinksPublic/GetWOPIFileInfo/index.md#response): The file's title, extension, size, the account name of the link's creator, and the object and file version.