Scramble: An Open-Source AI Writing Assistant for Your Browser

Scramble: An Open-Source AI Writing Assistant for Your Browser

Summary

Scramble is an open-source Chrome extension that leverages AI to enhance your writing directly in the browser. It offers a customizable alternative to Grammarly, allowing users to configure LLM providers, models, and endpoints. With support for various large language models and custom prompts, Scramble provides flexible text enhancement options.

Repository Info

Updated on May 12, 2026
View on GitHub

Tags

JavaScriptAIWriting AssistantBrowser ExtensionOpen SourceProductivityGrammar Checker

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Introduction

Scramble is an innovative open-source Chrome extension designed to elevate your writing directly within your browser. Positioned as a highly customizable alternative to proprietary tools like Grammarly, Scramble empowers users by leveraging AI to enhance text. It offers unparalleled flexibility, allowing you to configure your preferred Large Language Model (LLM) provider, model, and endpoint, along with the ability to create custom prompts for tailored writing assistance.

Installation

Getting Scramble up and running is straightforward for both Chrome and Firefox users.

Chrome Installation

  1. Clone the Scramble repository: git clone https://github.com/zlwaterfield/scramble.git
  2. Navigate into the cloned directory.
  3. Run npm install to install dependencies.
  4. Execute npm run build to build the extension.
  5. Open Chrome and go to chrome://extensions/.
  6. Enable "Developer mode" in the top right corner.
  7. Click "Load unpacked" and select the dist/chrome directory from your cloned repository.

Firefox Installation

  1. Clone the Scramble repository: git clone https://github.com/zlwaterfield/scramble.git
  2. Navigate into the cloned directory.
  3. Run npm install to install dependencies.
  4. Execute npm run build to build the extension.
  5. Open Firefox and go to about:debugging#/runtime/this-firefox.
  6. Click "Load Temporary Add-on".
  7. Navigate to the dist/firefox directory within your cloned repository and select manifest.json.

Examples

Using Scramble to enhance your text is intuitive:

  1. Highlight the text you wish to improve on any webpage.
  2. Right-click to open the context menu.
  3. Select "Scramble" and then choose from a variety of text enhancement options.
  4. The AI will process your selection and provide an enhanced version.

Scramble comes with several powerful default prompts, including:

  • Fix spelling and grammar
  • Improve writing
  • Make more professional
  • Simplify text
  • Summarize text
  • Expand text
  • Convert to bullet points

Beyond the defaults, Scramble allows you to create your own custom prompts, which will immediately appear in your list of options upon saving. This feature provides immense flexibility to tailor the AI's assistance to your specific needs.

Why Use Scramble?

Scramble stands out as an excellent choice for anyone seeking advanced writing assistance. Its open-source nature ensures transparency and community-driven development, while its core strength lies in unparalleled customizability. Unlike many proprietary solutions, Scramble gives you control over the underlying AI, supporting a wide range of LLMs such as OpenAI, Anthropic, Groq, OpenRouter, Ollama, and LM Studio. This flexibility means you can choose the model that best fits your needs for performance, cost, or even local execution. For writers, developers, and anyone who crafts text online, Scramble offers a powerful, adaptable, and privacy-conscious tool to refine their communication.

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