Minify Terraform HCL Code

Minifying HCL Code

While Terraform itself does not benefit from minified code, there are scenarios where compact HCL is useful: embedding in CI/CD pipelines, storing in configuration management databases, or reducing payload size for API-based Terraform Cloud operations.

Before Minification

# VPC Configuration
resource "aws_vpc" "main" {
  cidr_block           = "10.0.0.0/16"
  enable_dns_support   = true
  enable_dns_hostnames = true

  # Standard tags for all resources
  tags = {
    Name        = "main-vpc"
    Environment = "production"
    ManagedBy   = "terraform"
  }
}

# Public subnet
resource "aws_subnet" "public" {
  vpc_id     = aws_vpc.main.id
  cidr_block = "10.0.1.0/24"

  tags = {
    Name = "public-subnet"
  }
}

After Minification

resource "aws_vpc" "main" {
cidr_block = "10.0.0.0/16"
enable_dns_support = true
enable_dns_hostnames = true
tags = {
Name = "main-vpc"
Environment = "production"
ManagedBy = "terraform"
}
}
resource "aws_subnet" "public" {
vpc_id = aws_vpc.main.id
cidr_block = "10.0.1.0/24"
tags = {
Name = "public-subnet"
}
}

What Minification Removes

Element	Removed?
Single-line comments (#, //)	Yes
Multi-line comments (/* */)	Yes
Blank lines	Yes
Leading/trailing whitespace	Yes
Alignment padding	Yes
String contents	Preserved
Heredoc contents	Preserved

When NOT to Minify

• Version control: Always store formatted code in git
• Code review: Reviewers need readable code
• Debugging: Terraform error messages reference line numbers
• terraform fmt: The official formatter expects readable code