Adminer
Single-file open-source database management tool supporting many engines.
Open the official app on www.adminer.org
This tool is hosted by its maintainers. Click below to open www.adminer.org in a new tab — it's their official demo.
Browse developer tools →What's next with Adminer?
Choose how you want to get started.
Use it free
Open the official tool or demo — no account needed.
Self-host it
Run the open-source version on your own infrastructure.
What is Adminer?
Adminer is an open-source database management tool implemented as a single PHP file, designed to simplify interactions with relational databases. It supports MySQL, MariaDB, PostgreSQL, SQLite, MS SQL, Oracle, and additional systems via plugins. The tool enables users to connect to a database server using credentials, manage databases and tables, and perform administrative tasks such as schema modifications and data manipulation. Adminer is particularly useful for developers, system administrators, and database managers who need lightweight, portable access to database systems without installing dedicated server software. It addresses the challenge of maintaining and managing databases through a streamlined interface, eliminating the need for complex setups or separate tools for each database type.
How it works
Adminer is a single-file PHP application that provides a web-based interface for managing relational databases. It abstracts database operations into a user-friendly interface, allowing users to interact with databases through a browser without requiring additional server-side configurations. The tool is ideal for scenarios where quick access to database management is needed, such as local development, small-scale projects, or environments where deploying full database management systems is impractical. Adminer supports database connection via username and password, enabling users to select or create databases. It allows table management, including altering structures, adding/removing columns, and handling indexes. Users can also export/import data, manage users, and execute SQL queries directly.
How to use it
- 1Download the Adminer PHP file from its official repository or a trusted source. 2. Upload the file to a web server or local environment where PHP is installed. 3. Access the file via a web browser using the server’s URL and the file’s name. 4. Enter database credentials to establish a connection and begin managing the database. Practical tips include securing the file with password protection, using HTTPS to prevent data interception, and leveraging plugins for extended database compatibility.
What it can do
- database management
Use cases
Assumptions and limitations
Assumptions
- source: https://github.com/vrana/adminer
- license: Apache-2.0 — free to use
- privacy: Self-hosted — you control your data
Limitations
- Limited support for advanced database features like stored procedures without plugins
- Dependence on PHP and a web server for operation
- No built-in version control for database schemas
- Security risks if not configured with HTTPS or password protection
- Smaller community compared to tools like phpMyAdmin
Understanding the result
Single-file open-source database management tool supporting many engines.
Tool details
- Clearly flagged when a network request is needed.
- No account, no sign-up, and no tracking of your content.
- Powered by (Apache-2.0).
- Built with
- (vrana/adminer)
- License
- Apache-2.0
- Runs locally
- No — requires a network request
- Verification
- Not yet verified
- Input
- Query
- Output
- Text
Built with vrana/adminer. OpenToolVault provides the discovery and browser interface while crediting the original project maintainers.
- Built with
- License
- Apache-2.0
Open-source project
OpenToolVault is an independent directory. We are not affiliated with or endorsed by this project.
References
- / — GitHub Repository
Upstream project · GitHub
- Apache-2.0 License
Upstream project
Frequently asked
How does Adminer handle multiple database systems?
Adminer uses plugins to extend support beyond its core databases (MySQL, PostgreSQL, SQLite). For example, the MS SQL plugin enables connectivity to Microsoft SQL Server, while Oracle plugins add compatibility. Users must download and enable these plugins separately to access additional database types.
How does Adminer execute SQL queries?
Adminer processes SQL queries through its built-in parser, which validates syntax and executes commands against the connected database. Users can input raw SQL in the query editor, and results are displayed in a tabular format. The tool also supports exporting query results to CSV or SQL dump files for further processing.
How do I export a database using Adminer?
Navigate to the 'Export' section in the database menu. Select the export format (e.g., SQL, CSV, or JSON) and choose the tables or entire database to include. Adminer generates a downloadable file containing the exported data, which can be used for backups or migrations.
How does Adminer compare to phpMyAdmin?
Adminer is a single-file tool with a smaller footprint, making it easier to deploy in restricted environments. phpMyAdmin, while more feature-rich, requires separate installation and configuration. Adminer excels in simplicity and portability, while phpMyAdmin offers advanced tools like GUI-based schema design and more extensive plugin ecosystems.
What should I do if I receive a 'Connection refused' error?
Verify that the database server is running and accessible. Check the hostname, port, and credentials entered in Adminer. Ensure the server’s firewall allows connections from the client’s IP address. If using a local database, confirm that the server is configured to accept local connections (e.g., MySQL’s 'bind-address' setting).