---
id: esp-idf-nvs-partition-gen
version: "0.3.0"
license: Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. "License" shall mean the terms and conditions for… (full text in the JSON record)
license_treatment: permissive
maintenance: active
---

# esp-idf-nvs-partition-gen — ESP-IDF NVS partition generation tool

License: permissive · Maintenance: active · Downloads: 491.0K/mo

## What it is and what it does

This package is a utility for generating binary NVS partition files compatible with ESP32 and ESP-IDF's Non-Volatile Storage architecture. It reads key-value pairs from a CSV file and outputs a binary blob that can be flashed directly onto ESP32 devices during manufacturing.

The primary use case is ODM/OEM manufacturing workflows where many device instances need the same firmware but different customized parameters—such as serial numbers or device-specific data. Rather than reflashing firmware for each device, manufacturers can generate a single firmware binary and flash device-specific NVS data separately, significantly speeding up production. The package depends on cryptography and esp-pylib for encryption and ESP platform utilities.

Use it for:

- Generate device-specific NVS data blobs for mass manufacturing of ESP32 products with unique identifiers
- Create customized configuration partitions for different device variants without rebuilding firmware
- Automate production workflows that require flashing calibration or pairing data to each manufactured unit
- Prepare NVS partition files for external flashing during device assembly or provisioning stages

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

Generates binary NVS (Non-Volatile Storage) partition files from CSV key-value data for ESP32 devices, enabling manufacturers to flash customized device parameters during production.

Yes, if you are manufacturing ESP32 devices and need to flash device-specific parameters at production time. The package is actively maintained, has low install friction, carries a permissive Apache 2.0 license, and solves a concrete manufacturing workflow problem. Install it as part of your production toolchain if you use ESP-IDF and NVS storage.

## Install

pip install esp-idf-nvs-partition-gen
uv add esp-idf-nvs-partition-gen
poetry add esp-idf-nvs-partition-gen

## Installing esp-idf-nvs-partition-gen

Before you install: Low friction install with active maintenance. Released within the last month and actively maintained. Depends on cryptography and esp-pylib.

License in practice: Apache License 2.0 is permissive; you can use, modify, and distribute this package freely in commercial and private projects provided you include the license and attribute changes.

Quickstart:

pip install esp-idf-nvs-partition-gen

from esp_idf_nvs_partition_gen import generate

# Generate binary from CSV
generate(csv_file='config.csv', output_file='nvs.bin')

Requires Python 3.8 or later. The CSV input file must follow the NVS key-value format defined in the ESP-IDF documentation.

Verify before relying:

- Whether the package provides a command-line interface or is primarily a Python library
- Specific CSV schema requirements and supported data types for NVS partitions
- Maximum partition size limits or performance characteristics with large datasets
- Exact API surface and available functions beyond the core generation capability

## Package facts

- License: Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. "License" shall mean the terms and conditions for… (full text in the JSON record) (permissive)
- Python support: supports_current
- Install friction: low
- Maintenance: active
- Downloads: 491.0K/month (top 15,000 on PyPI)
- Known vulnerabilities: none known

## Tags

esp32 nvs partition generator, nvs binary blob creation, esp-idf nvs tool, device manufacturing customization, esp32 non-volatile storage, nvs partition csv to binary, esp32, manufacturing, embedded-systems

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