har-to-hoverfly

Converts a HAR file to a Hoverfly simulation file for API mocking and testing

This CLI tool ingests a HAR (HTTP Archive) file and produces a Hoverfly-compatible simulation. Useful for simulating real traffic and testing systems in isolation.

Features

• Filters entries by MIME type
• Skips or includes only specific content types via --allowed-content-types
• Optionally omits non-text entries
• Summarise mode shows traffic structure
• Supports limiting body size
• Allows host restriction

Usage

har-to-hoverfly --input <file.har> [flags]

Flags

Flag	Description
--input	Path to the input HAR file (required)
--output	Output simulation JSON file path (optional, defaults to stdout)
--max-body-bytes	Max body size for responses; truncate if exceeded
--ignore-non-text	Completely ignore non-text MIME types
--allowed-content-types	Comma-separated list of allowed substrings in MIME types
--host	Restrict processing to entries for a specific destination host
--summarise	Outputs a summary table grouped by host, method, path

Example

har-to-hoverfly --input cloud.hfcdev.iocodev.uk.har --output simulation.json --ignore-non-text --allowed-content-types json,xml

This processes a HAR file, includes only JSON/XML responses, and outputs a Hoverfly simulation file.

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