esp32tool

🚀 ESP32Tool – The Ultimate ESP Filesystem Powerhouse

Flash. Manage. Dominate. In your browser, on desktop, mobile, or command line.

Meet ESP32Tool – your all-in-one, next-gen solution for ESP device management. Experience seamless firmware flashing, backup, and now, full filesystem control with just a few clicks. No drivers, no command line hassle, no limits!

📦 Available Versions

Choose the version that fits your workflow:

🌐 Web App (Browser)

• Zero installation – runs directly in your browser
• Works on any modern desktop or mobile browser
• Perfect for quick tasks and on-the-go management
• Try it now: jason2866.github.io/esp32tool

📱 Mobile App (Android PWA)

• Install as native app on Android devices
• Works with USB OTG adapters via WebUSB
• Full ESP management on your phone or tablet
• Install: Visit jason2866.github.io/esp32tool in Chrome → "Add to Home screen"
• Details: See Android Installation below

💻 Desktop App (Electron GUI)

• Full-featured GUI with all web capabilities
• Offline-ready, no internet required
• Native desktop integration
• Download: Latest Release
• Available for: macOS (Intel & Apple Silicon), Windows, Linux

⌨️ Command Line Interface (CLI)

• Standalone executable – no Node.js required!
• Perfect for automation and scripting
• esptool.py-compatible commands
• Download: Latest Release
• Documentation: CLI-README.md
• Available for: macOS (Intel & Apple Silicon), Windows, Linux

✨ What makes ESP32Tool shine?

ESP32 First! ESP32Tool is designed first and foremost for the entire ESP32 family – delivering the most advanced, seamless, and powerful filesystem and firmware management for all ESP32 variants. Every feature and update is optimized for ESP32 users.

• Universal Filesystem Support: Instantly detect, read, and write to LittleFS, SPIFFS, and FATFS – all major ESP filesystems, fully supported!

• Total File Control: Effortlessly add or delete individual files. Upload, download, organize – your ESP, your rules.

• Lightning Fast: Custom, high-performance flash access – up to 10x faster than esptool.py!

• Rock-Solid Reliability: Automatic resume on read errors. No more broken operations, ever.

• Plug & Play: Manage your ESP directly in the browser. No software installation needed.

• Multi-Platform: Available as web app, desktop app (Electron), and standalone CLI

• Offline Ready: Desktop and CLI versions work completely offline

• 📱 Android Ready: Install as Progressive Web App (PWA) on Android! Works with USB OTG adapters via WebUSB.

• Bonus: ESP8266 support is now included! Manage filesystems on ESP8266 devices with the same ease.

Try it now: jason2866.github.io/esp32tool

📦 Desktop & CLI Installation

Desktop App (GUI)

Download from GitHub Releases

• macOS: Download ESP32Tool-*.dmg, open and drag to Applications
• Windows: Download and run ESP32Tool-Setup-*.exe installer
• Linux: Download .deb (Debian/Ubuntu) or .rpm (Fedora/RHEL) package

Command Line Interface

Download from GitHub Releases

Look for ESP32Tool-CLI-* files. No Node.js installation required!

Quick Start:

# macOS
/Applications/ESP32Tool.app/Contents/MacOS/esp32tool list-ports
/Applications/ESP32Tool.app/Contents/MacOS/esp32tool --port /dev/ttyUSB0 chip-id

# Linux
./esp32tool list-ports
./esp32tool --port /dev/ttyUSB0 chip-id

# Windows
esp32tool.exe list-ports
esp32tool.exe --port COM3 chip-id

Full CLI documentation: CLI-README.md

📱 Android Installation (PWA)

ESP32Tool works natively on Android devices with USB OTG support!

Requirements:

• Android 5.0+ (Lollipop or higher)
• Chrome for Android 61+ (recommended: latest version)
• USB OTG adapter/cable
• ESP32/ESP8266 device

Installation:

• Open jason2866.github.io/esp32tool in Chrome
• Tap the menu (⋮) → "Add to Home screen" or "Install app"
• Connect your ESP device via USB OTG adapter
• Grant USB permissions when prompted
• Flash and manage your ESP devices on the go!

🛠️ Developer Quickstart

• Clone this repository
• Install dependencies: npm install
• Start the dev environment: script/develop
• Open http://localhost:5004/ in your browser

🏆 The Story

Born from the minds of Melissa LeBlanc-Williams, Adafruit, Nabu Casa and now supercharged by Jason2866, ESP32Tool has evolved into the most advanced, browser-based ESP management suite. With every update, the boundaries are pushed of what’s possible for your ESP devices.

Latest updates:

December 2025 – Now with full LittleFS, SPIFFS, and FATFS support, plus file add/delete magic! Available as web app and desktop GUI.

January 2026 – Added Android mobile devices support, standalone CLI.

February 2026 - Added IMPROV support, NEW Features: Flash Hex Editor and NVS Parser / Editor

March 2026 – Auto-detect partition table, flash read speed/time logging, flash erase animation

© Adafruit, Nabu Casa & Johann Obermeier