---
title: Standard metadata
slug: '155'
canonical_url: https://docs.coveo.com/en/155/
collection: index-content
source_format: adoc
---
# Standard metadata
To benefit from the Push source's [automapping](https://docs.coveo.com/en/115/) feature, two requirements must be met to index item [metadata](https://docs.coveo.com/en/218/):

* The [metadata](https://docs.coveo.com/en/218/) value must be present when the item is pushed.

* A [field](https://docs.coveo.com/en/200/) with the same name and a compatible [data type](https://docs.coveo.com/en/1833#field-type) must exist in your [Coveo organization](https://docs.coveo.com/en/185/).

For some standard metadata, the Push API or the [Coveo indexing pipeline](https://docs.coveo.com/en/184/) automatically sets metadata values on items you add or update.
Additionally, your [Coveo organization](https://docs.coveo.com/en/185/) may include a default [field](https://docs.coveo.com/en/200/) that indexes this metadata automatically.

**Example**

When the [Coveo indexing pipeline](https://docs.coveo.com/en/184/) processes an item, it [detects the item's language](https://docs.coveo.com/en/1956#supported-languages-for-indexing-features) and sets the `language` metadata value accordingly.
This value is automatically indexed in the default `language` field of your [Coveo organization](https://docs.coveo.com/en/185/).

For other standard metadata, Coveo doesn't automatically set metadata values, but a default field exists for the purpose of indexing this metadata.

**Example**

The `author` field is a [default field](https://docs.coveo.com/en/1833#field-origin).
It's populated when you push an item that includes an `author` metadata value in the request body.

Finally, for some standard metadata, Coveo neither sets metadata values automatically nor contains a default field to index this metadata.

The following table lists standard Coveo metadata and indicates whether:

* Coveo automatically sets the metadata value

* A default field exists to index the metadata

[%header,cols="2,4,1,1",options="header"]
|===
|Metadata name
|Description and details
|Coveo sets metadata values?
|Default field exists?

|`date`
a|The date and time of the last Push API request that updated the item (for example, `"2017-11-08T12:18:41.666Z"`).  
  
You can override this value by retrieving the last modification date from the original document and passing it as the `date` metadata in your request body.
|[check]
|[check]

|`filetype`
|The item's file extension (for example, `"html"`).
|[check]
|[check]

|`indexeddate`
|The date and time when the item was last processed by the [document processing manager (DPM)](https://docs.coveo.com/en/191/) (for example, `"2023-11-08T12:18:41.666Z"`).
|[check]
|[check]

|`size`
a|The item's size in bytes (for example, `50683`).
|[check]
|[check]

|`source`
|The name of the source that contains the item (for example, `"MyPushSource"`).
|[check]
|[check]

|`author`
|The item's author (for example, `"Alice Smith"`).
|[x]
|[check]

|`documenttype`
|The type of item (for example, `"WebPage"`).
|[x]
|[check]

|`filename`
|The name of the file (for example, `"index.html"`).
|[x]
|[check]

|`permanentid`
|A unique, and permanent identifier for the item (for example, `"my10293810329permanent1239810239818id"`).
|[x]
|[check]

|`sourcetype`
|The type of source that contains the item (for example, `"Push"`).
|[x]
|[check]

|`title`
|The item's title (for example, `"My Document"`).
|[x]
|[check]

|`duration`
|If the item is a video, its duration in seconds (for example, `125.6`).
|[x]
|[x]

|`height`
|If the item is an image, its height in pixels (for example, `768`).
|[x]
|[x]

|`pages`
|The total number of pages in the item (for example, `42`).
|[x]
|[x]

|`width`
| If the item is an image, its width in pixels (for example, `1024`).
|[x]
|[x]
|===