Comparing Supabase GUIs by Read-Only Boundaries
If the goal is only to inspect Supabase data, an administrator-oriented GUI is not always necessary.
A screen without an edit button is not the same thing as a read-only database, however.
This comparison narrows PostgreSQL privileges first, then compares UI workflow and sharing.
Separate meanings of “browsing”
| Goal | Candidates | Main comparison |
|---|---|---|
| Inspect rows occasionally | DBeaver, pgAdmin | Safe connection and searchability |
| Investigate with SQL | DBeaver, CloudBeaver | Schema, queries, and export |
| Share recurring analysis | Metabase | Questions, filters, and dashboards |
| Provide a browser UI to a team | CloudBeaver | User, team, and connection permissions |
| Need a temporary lightweight screen | Adminer | Exposure and update management |
A GUI read-only display does not remove database write privileges.
Changing tools does not change the accident boundary if the same powerful credential can still write.
Make PostgreSQL the first barrier
Do not give a production-like GUI the postgres user or a Supabase Secret key.
Create a purpose-specific read-only role.
create role notes_reader login;
-- Set the password through a safe administrative method, not SQL or shell history.
-- In psql, for example:
-- \password notes_reader
grant connect on database postgres to notes_reader;
grant usage on schema public to notes_reader;
grant select on all tables in schema public to notes_reader;
-- Grant SELECT on future tables created by the specified owner.
alter default privileges for role postgres in schema public
grant select on tables to notes_reader;Narrow the database, schemas, and tables to what is needed.
ALTER DEFAULT PRIVILEGES affects future objects created by the specified role, not existing objects.
If migrations use several owners, configure each real creator.
You can also grant access only to selected views.
Do not grant this role INSERT, UPDATE, DELETE, CREATE, ALTER, or DROP.
Even when the GUI disables editing, a powerful database role can write through another client.
Audit the RLS boundary for Supabase Data API access separately from the role used for direct PostgreSQL access.
Compare five candidates on the same axes
| Tool | Strongest use | UI | Read-only boundary | Best for |
|---|---|---|---|---|
| Metabase | Questions, filters, charts, dashboards | Browser | Analytics DB user | Recurring shared analysis |
| CloudBeaver | DB explorer, tables, SQL | Browser | DB role and UI permissions | Team sharing |
| DBeaver Community | SQL, schema, data, export | Desktop | Edition controls plus DB role | Individual investigation |
| pgAdmin | PostgreSQL roles, schemas, settings | Desktop / Web | PostgreSQL privileges | Database-specific inspection |
| Adminer | Lightweight database administration | Browser | DB role is essential | Temporary access |
User management, connection limits, and edit restrictions vary by edition and version.
Check the official documentation for the edition you will operate.
Metabase: grow browsing into analysis
Metabase fits a workflow that grows from row inspection into saved questions, filters, charts, and dashboards.
Connect with a dedicated analytics user that has only CONNECT and SELECT on the required data.
CSV uploads, Actions, and model persistence may require writes.
Keep those capabilities on a separate connection and role from browsing.
Metabase also needs an application database for users, questions, and dashboards.
That operating cost may be excessive for one person’s occasional inspection.
CloudBeaver: a shared browser GUI
CloudBeaver combines table browsing, filtering, and SQL in a browser interface.
For team use, combine database roles with the user, team, connection, and Data Editor permissions supported by the edition.
Data Editor controls may distinguish editing, import, export, and SQL execution.
Read-only UI behavior never replaces database privileges.
For one local user, operating the CloudBeaver server can be more than necessary.
DBeaver: a practical individual starting point
DBeaver combines schema inspection, SQL, execution plans, and export in a desktop UI.
Follow Supabase’s DBeaver procedure; use Direct connection in IPv6 environments and consider Session Pooler on IPv4-only networks.
Supported editions may provide connection-level read-only and edit restrictions.
Keep the database role read-only regardless of which UI controls are available.
Separate production-readonly and development with connection names, colors, and credentials.
pgAdmin: inspect PostgreSQL deeply
pgAdmin is strong for PostgreSQL roles, schemas, SSL, SQL, and backups.
It can feel administrator-oriented when the task is only searching one table.
Tables or views without a primary key may appear read-only because rows cannot be identified uniquely.
That display does not prove that the database role is safe.
Always connect with a read-only role.
Adminer: lightweight, but never expose it
Adminer runs as a lightweight single PHP file.
It also provides row insertion, updates, deletion, SQL, and schema changes.
If you use it:
- Connect with a dedicated read-only database user
- Never expose it directly to the internet
- Add web authentication, IP restrictions, or a VPN
- Keep it updated
- Remove it after use
Lightweight does not mean safe by default.
Choose by purpose
- Occasional table browsing: DBeaver with a read-only connection
- Shared browser access: CloudBeaver with DB and application permissions
- Recurring reports: Metabase with a read-only analytics connection
- PostgreSQL structure: pgAdmin
- Temporary lightweight access: Adminer with strict exposure controls
Summary
The key comparison is not the tool name, but where write access is stopped.
Create least-privilege database roles and add GUI read-only controls as a second barrier.
Separate production and development credentials and do not expose browser GUIs to the internet.
DBeaver is a simple starting point for individual work, CloudBeaver for a shared browser, and Metabase for dashboards.
In every case, do not hand a Supabase administrator credential to a browsing tool.