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WebSerial Pro

A remote terminal library for wireless microcontrollers to log, monitor or debug without being connected by wire.

Things included with Pro

Do more with WebSerial Pro. Pro includes everything in the lite version, plus these additional features to help you get the most out of WebSerial.

  • Export Logs

    With a single click of a button, you can export logs in various formats like JSON, CSV & Text for sharing and quick analysis.
  • Timestamps

    Timestamps are syncronized with your microcontroller and automatically added to the logs giving you a detailed view of your logs.
  • Lock Scroll

    Lock the scroll on the terminal when required, so you can easily scroll past logs while the terminal keeps on receiving new logs.
  • Toggle Input Bar

    Want to use WebSerial for monitoring only? You can easily disable the command input bar from the library itself.
  • Font Customization

    Choose through multiple font styles and enlarge/decrease font size according to your needs.
  • Hardware ID

    A dedicated field to enter hardware ID. This helps you to identify the device you are interacting with.
  • Logs Size Calculation

    WebSerial automatically calculates and displays total size of logs in bytes at the bottom left corner of the interface.
  • Optimized UI

    Optimized UI based on SvelteJS. It's faster, more responsive and has a size of only 23KB.
  • UI Source

    Get the source code of the UI (webpage) and modify it to your needs.

and some extras...

Who doesn't love a little extra? Here are some additional features that come with Pro.

  • Whitelabel / Branding

    Replace logo with your own with ease. You can also change the width and height of the logo without even touching HTML or CSS.
  • Custom Title

    The library comes with a simple function to change the browser title of your dashboard.
  • Free Lifetime Updates

    Free lifetime updates are part of your package! As new features roll out, you can update it anytime to the latest version without any extra cost.


WebSerial Pro is an one-time purchase. No subscriptions, no hidden fees.

Pro Package

Pro package includes everything in the lite version, plus exclusive features and technical support for 3 months.

What’s included

Pay once, own it forever


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Invoices and receipts available for easy company reimbursement


Here are some frequently asked questions about WebSerial Pro. If you have any other questions, feel free to reach out.

WebSerial Pro is a software library that can be used alongside your existing code to log, monitor and debug your firmware. It lives on your wireless microcontroller itself and can be accessed anytime through your browser.

You'll get a receipt from Paddle Inc. and a uniquely generated download link to the email address through which you made the purchase.

Unfortunately, the library does not support ESP-IDF. It only supports Arduino core for ESP8266/ESP32.

Yes, the library comes with the source code for the UI (webpage). You can customize the UI to your liking.

Yes, you can use the library for commercial purposes. The library comes with SCL-1.1 (SOFTT Commercial License 1.1) that allows you to use it in commercial projects.

You can use the library on as many devices as you want. There are no limitations on the number of devices you can use the library with.

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