A DatoCMS plugin that provides two complementary features for managing
multilingual content:
Mass Locale Duplication — bulk copy all content from one locale to
another across selected models.
Field-Level Copying — one-click copy buttons on individual localized
fields while editing a record.
This can be useful when you need to:
Migrate content from an old locale code to a new one (and optionally remove
the old locale afterward).
Duplicate content between two similar locales (e.g., en-US and en-UK) as
a starting point before making minor adjustments.
Selectively copy specific localized field values across locales while
editing a single record.
Features
Mass Locale Duplication
Pick a source and a target locale from the project's available locales.
Choose which models participate in the duplication (all are selected by
default).
Toggle whether to read draft records (otherwise only published records are
duplicated).
Toggle whether to automatically publish updated records after duplication.
Two-step confirmation flow before any data is touched.
Live progress view with per-record success/error logs and the ability to
abort mid-run.
Final summary view with success/failure counts grouped by model.
Field-Level Copy
A copy button is added as an addon on each field selected in the plugin's
configuration.
The plugin treats the first locale of the record as the main locale:
When editing the main locale, the button is labeled
Copy to all locales and copies the current field value into every
other locale of the record.
When editing any other locale, the button is labeled
Copy from <main-locale> and copies the main-locale value into the
current locale.
The button is hidden on records that only have a single locale.
Supports string, text, structured text, JSON, SEO, and slug field types.
Nested block IDs are stripped from the copied value so the
duplicated structured/block content gets new IDs on save.
Configuration
Mass Locale Duplication
No special configuration required. Open it from
Configuration → Mass Locale Duplication.
Field-Level Copy
Open Configuration → Plugins → Locale Duplicate.
Pick a Model, then pick a Localized Field from that model
(non-localized fields are filtered out, and already-configured fields are
excluded from the dropdown).
Click Add Configuration, repeat for any other field/model combos.
Click Save Configuration to persist the list to the plugin parameters.
Copy buttons appear automatically on the configured fields when editing a
record with more than one locale.
The configuration screen also includes a shortcut button that navigates
directly to the Mass Locale Duplication page.
Usage
Mass Locale Duplication
Navigate to Configuration → Mass Locale Duplication in
your DatoCMS project.
Choose the Source Locale (the locale that has the content you want to
duplicate).
Choose the Target Locale (the locale that will receive the copied
content).
Select which models you want to duplicate:
By default, all non-modular-block models are selected.
Deselect any models you don't want to include in the run.
Optionally toggle:
Use records in draft state — include draft content in the copy.
Publish updated records automatically after duplication — bulk
publishes records that were successfully updated.
Click Duplicate locale content.
Confirm the two prompts: first that you really want to duplicate, then
that you accept the target locale will be overwritten.
Watch the progress view (per-record updates with status, model, and IDs).
You can Abort Process at any time; in-flight changes are kept but no
further records are touched.
Once finished, review the summary view with success/failure counts and
record IDs grouped by model.
Field-Level Copy
Configure fields in the plugin configuration as described above.
Open a record in the record editor with more than one locale.
On the configured fields:
In the main locale, click Copy to all locales to push the current
value into every other locale.
In any other locale, click Copy from <main-locale> to pull the
main locale's value into the current one.
Common Use Cases
Renaming a Locale
Create a new locale in Configuration → Locales (e.g., add en-NEW next to
the existing en-OLD).
In the Locale Duplicate plugin, choose en-OLD as the source and
en-NEW as the target.
Run Mass Locale Duplication.
Remove the old locale (en-OLD) from Settings → Locales if desired.
Setting Up a Similar Locale
If you have a locale like en-US and want a similar locale like en-UK:
Create en-UK in Settings → Locales.
In the plugin, select en-US as the source and en-UK as the target.
Run Mass Locale Duplication.
Updating Specific Content Types
If you've made major updates to certain models in one locale and want to
propagate only those changes:
Select your source and target locales.
Deselect every model except the ones you specifically want to update.
Run Mass Locale Duplication on the reduced selection.
Copying a Field Value Within a Single Record
Open a record with multiple locales.
On a configured field, use Copy to all locales (from the main locale)
or Copy from <main-locale> (from any other locale) to sync the
field's localized values without leaving the editor.