Transformations: get full control over event payloads with code

Run your own JavaScript (and soon Python!) code on event payloads so you can customize integrations, fix bad data and enrich events.

Custom JavaScript or Python transformations
Library for stored, reusable functions
Version-control via GitHub actions
Enrichment via external APIs
Rich error reporting and debugging

Ship fixes and customizations without opening dev tickets

Fix bad data or customize destination mappings in minutes
Write simple to modify event payloads for any use case, from fixing data in flight to filtering events or updating keys when marketing changes a field name without telling anyone.

Integrate with your existing dev workflow
Leverage our API and GitHub Actions to deploy version controlled transformations from your existing CI/CD workflow.
Make compliance simple
Easily mask PII, filter events and block specific data points, all on a per-integration basis.

Join companies like Stripe, Priceline and Grafana who transform events through RudderStack.

"We ingest a lot of data, put it into Snowflake, and use RudderStack to get it downstream, and we can guarantee that the data is clean, consistently defined across our entire stack, and compatible with all existing and future platforms."

- Brett Trani
Director of Data and Analytics at Joybird / La-Z-Boy

Key features

Modify payloads in-transit using custom JavaScript
Enrich payloads with internal and external APIs
Easily mask PII and filter events
Deploy version-controlled transformations via GitHub
Write reusable transformations with our functions library
Run custom transformations on a per-destination basis

Read the docs

Top Transformations use cases

Implement intelligent event routing and filtering
Transformations are run on a per-destination basis, meaning you can apply routing and filtering logic to ensure the right events go to the right destination, every time.
Enrich payloads from any API
You can enrich customer profiles, connect to internal databases and augment identity resolution, all from Transformations.
Easily build and maintain custom integrations
Combining our JavaScript transformations with our webhook destination allows you to quickly build custom integrations to internal and external destinations.

Read the Transformations case study

Get started today

Start building smarter customer data pipelines today with RudderStack. Our solutions engineering team is here to help.