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CSV Import of Content

Last updated: 2026/06/23

This is a feature that allows you to bulk register content from a CSV file.
It can be used when migrating content from other CMSs or when registering content in bulk.

Content Registration Procedure

For New Registration

1: Create any API you like.

2: Click the [Import] button.

3: Click the link for the sample CSV file (input-format.csv) to download it.

The sample CSV file (input-format.csv) contains sample values based on the types of fields that are registered. Please use it during the import process.

Information

The downloadable sample CSV file (input-format.csv) is encoded in UTF-8 (without BOM). Please save it in the same format after editing.
When opening the sample file in your application, the CSV file may become garbled. For solutions to garbled text, please refer to the help article "The sample file for CSV import appears garbled. What should I do?".

4: Enter the content you want to register and update/save the CSV file.

5: Click the [Select File] button to load the CSV file you want to register.

6: Choose the status of the content to be imported (Draft or Published).

Information

If you are using the role feature, the selectable items will vary depending on the granted "content" permissions.

Draft: This option can be selected if you have the permission to save new content as a draft.
Published: This option can be selected if you have the permission to publish new content.

7: Click the [Start Import of ◯ Items] button.

8: The import process will be executed. It may take a few minutes until the registration is complete.

9: If the process completes successfully, a message saying "Import Completed" will be displayed, and the content registration will be finished. If an error is displayed, please check the content of the error message.

Adding in Between

1: Select any API
2: Click the [Import and Add] button

3: After this, the process will follow the same flow as steps 3 and beyond for new registrations.

Using Exported CSV Files

You can register content using the CSV file exported from the content CSV export.
For the method of exporting CSV files, please refer to "Content CSV Export".

1: Remove and save the common columns except for the id from the exported CSV file.

2: After this, the process will follow the same flow as steps 5 and beyond for new registrations.

Caution

When importing an exported CSV file, there may be cases where the import fails, such as the following:

When the CSV contains fields or value formats that are not supported by the CSV import
When the export was performed with insufficient permissions, resulting in some field values being inaccessible
When the CSV includes two rows for the same content, one published (PUBLISH) and one in draft (DRAFT)
When importing directly into an API with existing content, causing duplication of content IDs or fields with unique constraints

Input Format Rules

Only list format APIs can be used.
Please import CSV files with character encoding UTF-8 (without BOM).

Supported Fields and Their Input Formats

Field Name	Input Format	Input Example (*1)
Text Field	Any text	Text
Text Area	Any text	Enter multiple lines of text Hello
Rich Editor	HTML string (*2)	<p>Enter multiple lines of text<br />Hello</p>
Old Rich Editor	Any text (*3)	Enter multiple lines of text Hello
Image	URL of the image distributed by microCMS (*4)	https://images.microcms-assets.io/assets/xxxx/yyyy/sample.png
Multiple Images	Specify URLs of images distributed by microCMS, separated by commas (*5)	https://images.microcms-assets.io/assets/xxxx/yyyy/sample1.png, https://images.microcms-assets.io/assets/xxxx/yyyy/sample2.png
Date and Time	ISO format (ISO 8601)	2024-01-01T00:00:00Z
Boolean	TRUE or FALSE	TRUE
Select Field	Elements set as options	Option 1
Select Field (Multiple Selection)	Specify elements set as options, separated by commas	Option 1,Option 2
Content Reference	Content ID of the referenced content	category01
Multiple Content References	Specify Content IDs of the referenced content, separated by commas	category01,category02
Number	Number	100
Custom	JSON (only registerable keys) (*7)	{"fieldId":"xxxxxxxx","some_value": "xxxxxxxx"}
Repeating	JSON array (only registerable keys) (*7)	[{"fieldId":"xxxxxxxx","some_value": "xxxxxxxx"},{"fieldId":"xxxxxxxx","some_value": "xxxxxxxx"}]
File (*6)	URL of the file distributed by microCMS	https://files.microcms-assets.io/assets/xxxx/yyyy/manual.pdf
Extended Field	JSON (only registerable keys) (*7)	{"id":"xxxxxxxx", "title":"xxxxxxxx", "description":"xxxxxxxx", "imageUrl":"https://images.microcms-assets.io/assets/xxxxxxxx/yyyyyyyy/sample1.png", "updatedAt":"2025-01-01T00:00:00.000Z","data":{"id": "123"}}

(*1) When editing a CSV file from a text editor, you need to enclose input values that contain line breaks or commas (,) in double quotes (").
(*2) Only HTML within the range supported by the rich editor can be submitted. Please note that not all HTML syntax is supported. The available formats are the same as those in the WRITE API for the rich editor.
(*3) Only plain text registration is possible. Registration with text formatting is not allowed.
(*4) If you are using custom domain settings for media, you can specify the URL of the custom domain as well. This also applies to multiple images and files.
(*5) You can import up to 100 images per field.
(*6) The Hobby plan is excluded.
(*7) The JSON format is specified in the same way as the WRITE API. Note that due to the specifications of the CSV format, when editing from a text editor, you need to register " as "".

Constraints

The maximum number of contents that can be imported at once varies by plan. For more details, please check the pricing page.

Import Errors

During content import, the content is validated based on the rules set for each input field, just like when registering data from the management screen.
If there is even one error in the content to be imported, the process will be halted at that point, and the content will not be added.

Common Error Examples

Required fields are set to ON but not filled in
The format of the content ID is incorrect

Errors Specific to CSV Import

In addition to the validation of each field, errors will also occur if there are issues with the data in the CSV file, such as the following:

The number of columns in the CSV does not match the number of fields in the API schema
The number of content items to be imported exceeds the plan's limit

Other Specifications

Content ID can be registered as blank (duplicates are not allowed).
The order of contents will be registered as per the appearance of the CSV file (the content on the second line will be displayed at the top of the Administration console).
Webhook will not be notified for content addition via CSV Import.

Reference Information

In addition to CSV import, there is also the option to register content in bulk using the WRITE API.
We have detailed the features and distinctions of each method in the blog post below, so please take a look.

microCMSに大量コンテンツを登録する方法まとめ | microCMSブログ: https://blog.microcms.io/how-to-register-a-large-amount-of-content

CSV Import of Content

Last updated: 2026/06/23

This is a feature that allows you to bulk register content from a CSV file.
It can be used when migrating content from other CMSs or when registering content in bulk.

Content Registration Procedure

For New Registration

1: Create any API you like.

2: Click the [Import] button.

Information

The downloadable sample CSV file (input-format.csv) is encoded in UTF-8 (without BOM). Please save it in the same format after editing.
When opening the sample file in your application, the CSV file may become garbled. For solutions to garbled text, please refer to the help article "The sample file for CSV import appears garbled. What should I do?".

4: Enter the content you want to register and update/save the CSV file.

5: Click the [Select File] button to load the CSV file you want to register.

6: Choose the status of the content to be imported (Draft or Published).

Information

If you are using the role feature, the selectable items will vary depending on the granted "content" permissions.

Draft: This option can be selected if you have the permission to save new content as a draft.
Published: This option can be selected if you have the permission to publish new content.

7: Click the [Start Import of ◯ Items] button.

Adding in Between

1: Select any API
2: Click the [Import and Add] button

3: After this, the process will follow the same flow as steps 3 and beyond for new registrations.

Using Exported CSV Files

2: After this, the process will follow the same flow as steps 5 and beyond for new registrations.

Caution

When importing an exported CSV file, there may be cases where the import fails, such as the following:

When the CSV contains fields or value formats that are not supported by the CSV import
When the export was performed with insufficient permissions, resulting in some field values being inaccessible
When the CSV includes two rows for the same content, one published (PUBLISH) and one in draft (DRAFT)
When importing directly into an API with existing content, causing duplication of content IDs or fields with unique constraints

Input Format Rules

Only list format APIs can be used.
Please import CSV files with character encoding UTF-8 (without BOM).

Supported Fields and Their Input Formats

Field Name	Input Format	Input Example (*1)
Text Field	Any text	Text
Text Area	Any text	Enter multiple lines of text Hello
Rich Editor	HTML string (*2)	<p>Enter multiple lines of text<br />Hello</p>
Old Rich Editor	Any text (*3)	Enter multiple lines of text Hello
Image	URL of the image distributed by microCMS (*4)	https://images.microcms-assets.io/assets/xxxx/yyyy/sample.png
Multiple Images	Specify URLs of images distributed by microCMS, separated by commas (*5)	https://images.microcms-assets.io/assets/xxxx/yyyy/sample1.png, https://images.microcms-assets.io/assets/xxxx/yyyy/sample2.png
Date and Time	ISO format (ISO 8601)	2024-01-01T00:00:00Z
Boolean	TRUE or FALSE	TRUE
Select Field	Elements set as options	Option 1
Select Field (Multiple Selection)	Specify elements set as options, separated by commas	Option 1,Option 2
Content Reference	Content ID of the referenced content	category01
Multiple Content References	Specify Content IDs of the referenced content, separated by commas	category01,category02
Number	Number	100
Custom	JSON (only registerable keys) (*7)	{"fieldId":"xxxxxxxx","some_value": "xxxxxxxx"}
Repeating	JSON array (only registerable keys) (*7)	[{"fieldId":"xxxxxxxx","some_value": "xxxxxxxx"},{"fieldId":"xxxxxxxx","some_value": "xxxxxxxx"}]
File (*6)	URL of the file distributed by microCMS	https://files.microcms-assets.io/assets/xxxx/yyyy/manual.pdf
Extended Field	JSON (only registerable keys) (*7)	{"id":"xxxxxxxx", "title":"xxxxxxxx", "description":"xxxxxxxx", "imageUrl":"https://images.microcms-assets.io/assets/xxxxxxxx/yyyyyyyy/sample1.png", "updatedAt":"2025-01-01T00:00:00.000Z","data":{"id": "123"}}

(*1) When editing a CSV file from a text editor, you need to enclose input values that contain line breaks or commas (,) in double quotes (").
(*2) Only HTML within the range supported by the rich editor can be submitted. Please note that not all HTML syntax is supported. The available formats are the same as those in the WRITE API for the rich editor.
(*3) Only plain text registration is possible. Registration with text formatting is not allowed.
(*4) If you are using custom domain settings for media, you can specify the URL of the custom domain as well. This also applies to multiple images and files.
(*5) You can import up to 100 images per field.
(*6) The Hobby plan is excluded.
(*7) The JSON format is specified in the same way as the WRITE API. Note that due to the specifications of the CSV format, when editing from a text editor, you need to register " as "".

Constraints

The maximum number of contents that can be imported at once varies by plan. For more details, please check the pricing page.

Import Errors

Common Error Examples

Required fields are set to ON but not filled in
The format of the content ID is incorrect

Errors Specific to CSV Import

In addition to the validation of each field, errors will also occur if there are issues with the data in the CSV file, such as the following:

The number of columns in the CSV does not match the number of fields in the API schema
The number of content items to be imported exceeds the plan's limit

Other Specifications

Content ID can be registered as blank (duplicates are not allowed).
The order of contents will be registered as per the appearance of the CSV file (the content on the second line will be displayed at the top of the Administration console).
Webhook will not be notified for content addition via CSV Import.

Reference Information

microCMSに大量コンテンツを登録する方法まとめ | microCMSブログ: https://blog.microcms.io/how-to-register-a-large-amount-of-content