Terraform Data Block Generator

The Terraform Data Block Generator is a focused, browser-only utility that writes a single valid Terraform data block for any provider data source you work with. A data block lets Terraform read information that already exists, such as the latest machine image, an existing virtual network, or a shared subnet, without creating or changing infrastructure. Writing these blocks by hand is repetitive and easy to get wrong, especially when an attribute must be a string, a number, a boolean, or a raw expression such as a list or a reference.

You supply the data source type, a name, and a set of typed attributes, and the generator emits correct HCL with proper quoting and formatting. You can also paste an existing .tf file to have it parsed and validated entirely on your machine, so you learn how many top-level blocks it contains and whether the syntax is well formed. Everything runs in your browser; nothing is uploaded, no provider is contacted, and no cloud account is required. It is ideal for quick scaffolding, for teaching teammates, and for producing clean, consistent data blocks that you can drop straight into a module or a root configuration without second guessing the syntax.

Because the tool never contacts a provider, it is also a safe way to experiment with data source arguments before you run a plan against real infrastructure. You can try different filters, confirm the HCL shape, and only then copy the block into your project. Teams use it to standardize how data sources are written across many modules, reducing the small inconsistencies that accumulate when everyone hand edits configuration files.

• Any data source - generate a data block for aws_ami, google_compute_image, azurerm_resource_group, or any custom type you need.
• Typed attributes - choose string, number, boolean, or raw so each value is serialized exactly as Terraform expects.
• Live preview - the generated HCL appears instantly in a copy-ready panel on the right.
• Paste and parse - validate existing .tf text and count the top-level blocks it contains.
• Client-side validation - identifiers are checked and a clear error list is shown when input is missing or malformed.
• Smart quoting - strings are quoted, numbers and booleans are left bare, raw values pass through untouched.
• Copy, download and print - export the block as data.tf, to the clipboard, or to a printed sheet.
• No dependencies - works offline in any modern browser with no install step.
• Private by design - your configuration never leaves the page.
• Beginner friendly - helpful hints guide first-time Terraform users through each field.
• Consistent output - every generated block follows the same canonical layout and indentation.
• Reusable - load the sample once, then tweak it for each environment you manage.

1. Open the generator and locate the data block form on the left panel of the page.
2. Enter the data source type exactly as Terraform expects it, for example aws_ami or azurerm_resource_group.
3. Give the block a name using a valid Terraform identifier such as web or shared_vpc; the name is checked for you automatically.
4. Add attributes with the Add attribute button, picking the correct type for each value: string, number, boolean, or raw expression.
5. Generate the HCL by clicking the Generate button and reviewing the output in the preview panel on the right.
6. Validate existing code by pasting a .tf file into the parse box and clicking Parse and validate to count its blocks.
7. Export the result with Copy to place it on the clipboard, Download to save data.tf, or Print for a paper copy.
8. Reset when needed using Clear, or start from a realistic example with Load sample.

Example 1 - latest machine image. Type aws_ami, name it web, add most_recent = true as a boolean and owners = ["self"] as a raw list. The generator emits a correct data block you can use to find the newest owned image.

Example 2 - parse a file. Paste a configuration that contains two resources and one data source; the parser reports three top-level blocks and confirms the syntax is valid. This is a fast way to sanity-check a file before committing it to version control.

Example 3 - provider alias. Add a provider argument such as alt to read data with a non-default provider configuration, which is useful when you manage resources across multiple regions or accounts from a single configuration.

• Correct schema - properly quoted, typed HCL every time.
• Faster authoring - skip hand formatting and quoting errors.
• Learning aid - see how value types map to HCL output.
• Validation - catch missing names and bad identifiers early.
• Portable - copy, download, or print wherever you work.
• Private - nothing is uploaded or sent anywhere.