Files
supabase/apps/studio
Sean Oliver e88a3723e1 feat(studio): add PostHog session replay with masked-by-default policy (#48515)
## I have read the
[CONTRIBUTING.md](https://github.com/supabase/supabase/blob/master/CONTRIBUTING.md)
file.

YES

## What kind of change does this PR introduce?

Telemetry feature.

## What is the current behavior?

- Session replay is off, and nothing in the code keeps it off.
- `packages/common/posthog-client.ts` sets no recording config at all.
- So PostHog's project setting alone decides, for every app sharing that
project.
- Studio, www and docs share one project.
- Studio shows customer data almost everywhere: SQL editor, table rows,
connection strings, API keys.
- posthog-js masks inputs by default. It does not mask rendered text.
- [GROWTH-1055](https://linear.app/supabase/issue/GROWTH-1055)

## What is the new behavior?

- `posthogClient.init()` takes a masking config, and disables recording
when it gets none.
- Studio passes one behind `NEXT_PUBLIC_POSTHOG_SESSION_REPLAY`.
- Every other app passes nothing, so it never loads the recorder.
- Studio masks all text and all inputs.
- `data-ph-capture="true"` opts one element's text back in. Unused so
far.
- Canvas is blocked, because it records as images that text masking
cannot reach.
- Query strings and fragments are stripped from recorded URLs, where
auth callbacks carry tokens.
- Request and response bodies are never recorded.
- Console logs are never recorded, since masking only reaches DOM text.
- Masking is set in code, so PostHog's settings cannot loosen it.
- Consent gating is unchanged. Nothing records before a user accepts.

## Additional context

- Recording needs three things: this env var, the PostHog project
toggle, and user consent.
- All three are off or unset, so merging this changes nothing at
runtime.
- `NEXT_PUBLIC_POSTHOG_SESSION_REPLAY` goes into Vercel on Preview scope
first, to test on a preview build.
- Production scope comes later, once we are ready to record there.
- `NEXT_PUBLIC_*` is inlined at build time, so each scope needs a
rebuild afterwards.
- Text inside HTML attributes (`title`, `alt`, `href`) is still recorded
as-is.
- posthog-js exposes no hook for masking attributes, so covering it
needs `ph-no-capture` per component.
- Staging has no server-side masking config, so that is where this gets
verified.
- Plan: enable recording on staging, verify masked text on a preview,
then decide on production.
- Network timing stays on for the dashboard performance work. Payloads
stay off.
- Tests cover both masking functions and the config values.

## Screenshots


https://github.com/user-attachments/assets/aa064a04-f977-4453-a3da-2fe0cdcead08

<img width="889" height="651" alt="CleanShot 2026-07-31 at 10 13 43"
src="https://github.com/user-attachments/assets/f1d07946-fd68-42b2-89f1-d201bc605638"
/>



<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

## Summary by CodeRabbit

* **New Features**
  * Added privacy-focused session replay for Studio.
* Text and form inputs are masked by default, with explicit opt-in
capture.
  * Network recordings remove query strings and fragments.
  * Headers, request bodies, canvas data, and console logs are excluded.

* **Bug Fixes**
  * Improved whitespace and capture-attribute handling during masking.
* Session replay remains disabled without a masking policy or explicit
enablement.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
2026-07-31 15:37:05 -07:00
..

Supabase Studio

A dashboard for managing your self-hosted Supabase project, and used on our hosted platform. Built with:

What's included

Studio is designed to work with existing deployments - either the local hosted, docker setup, or our CLI. It is not intended for managing the deployment and administration of projects - that's out of scope.

As such, the features exposed on Studio for existing deployments are limited to those which manage your database:

  • Table & SQL editors
    • Saved queries are unavailable
  • Database management
    • Policies, roles, extensions, replication
  • API documentation

Managing Project Settings

Project settings are managed outside of the Dashboard. If you use docker compose, you should manage the settings in your docker-compose file. If you're deploying Supabase to your own cloud, you should store your secrets and env vars in a vault or secrets manager.

How to contribute?

  • Branch from master and name your branches with the following structure
    • {type}/{branch_name}
      • Type: chore | fix | feature
      • The branch name is arbitrary — just make sure it summarizes the work.
  • When you send a PR to master, it will automatically tag members of the frontend team for review.
  • Review the main contributing guide to help test your feature before sending a PR.
  • The Dashboard is under active development. You should run git pull frequently to make sure you're up to date.

Developer Quickstart

Note

Supabase internal use: To develop on Studio locally with the backend services, see the instructions in the internal infrastructure repo.

# You'll need to be on Node v22
# in /studio

## For external contributors
pnpm install # install dependencies
pnpm run dev # start dev server

## For internal contributors
## First clone the private supabase/platform repo and follow instructions for setting up mise
mise studio  # Run from supabase/platform alongside `mise infra`

## For all
pnpm run test # run tests
pnpm run test -- --watch # run tests in watch mode

Running within a self-hosted environment

Follow the self-hosting guide to get started.

cd ..
cd docker
docker compose -f docker-compose.yml -f ./dev/docker-compose.dev.yml up

Once you've got that set up, update .env in the studio folder with the corresponding values.

POSTGRES_PASSWORD=
SUPABASE_ANON_KEY=
SUPABASE_SERVICE_KEY=

Then run the following commands to install dependencies and start the dashboard.

npm install
npm run dev

If you would like to configure different defaults for "Default Organization" and "Default Project", you will need to update the .env in the studio folder with the corresponding values.

DEFAULT_ORGANIZATION_NAME=
DEFAULT_PROJECT_NAME=