VTOP AutoOpen

Extension that intercepts VTOP reference material downloads and opens PDFs directly in the native viewer

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Table of Contents

1. About
2. Built With
3. Installation
4. Usage
5. Contributing

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About

VTOP Reference Auto-Open hooks into the VTOP course page’s hidden download form and button clicks to:

• Intercept the form submission or programmatic .submit() call for “Reference Material.”
• Fetch the PDF via fetch() using the authenticated session.
• Convert the binary blob to a data: URL.
• Open that data: URL in a new tab, letting the browser's native PDF viewer render it.

Features

• Prototype-patch: Overrides HTMLFormElement.prototype.submit to catch any direct form-submit call.
• Click-capture: Listens on the capture phase for reference-material button clicks.
• Seamless preview: Streams the PDF bytes, converts to Base64 data-URL, and opens in a new tab.
• Zero prompts: No “Save as…” dialogs, even under strict CSP.

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Built With

• JavaScript – Core scripting for content script & service worker
• WebExtension APIs – browser.tabs, browser.runtime, fetch, FileReader

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Installation

1. Clone or download this repo to a folder, e.g. vtop-autoopen.
2. In your browser, go to chrome://extensions, load unpacked, select that folder and you're good to go.

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Usage

1. Log in and navigate to any VTOP Course Page.
2. Click any Reference Material download button.
3. The PDF will open instantly in a new tab via your browser's built-in PDF viewer—no file-save dialog.

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Contributing

Bug reports, feature requests, and pull requests are welcome!

1. Fork the repository.
2. Create a new branch: git checkout -b feature-name.
3. Make your changes and commit: git commit -m "Add feature".
4. Push to your fork: git push origin feature-name.
5. Open a Pull Request here on GitHub.

Please ensure any additions maintain MV3 compatibility and do not introduce CSP conflicts.