SkypeDestroyer (Archived)

Experimental Tampermonkey/Greasemonkey userscript for https://web.skype.com that demonstrates message transformation techniques:

• Link text vs. destination spoofing
• Custom font sizes
• Sending unescaped HTML

This project is intentionally preserved as historical/educational code. The Skype Web app has changed since this was written, so the script is likely outdated or non‑functional on modern Skype.

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Features

• Link spoofing: Render link text that differs from the actual destination URL.
• Font size controls: Inline command to adjust font size of the outgoing message.
• Unescaped HTML passthrough: Send raw HTML without Skype’s automatic escaping.
• Quick inline command syntax (see Usage).

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Getting started

1. Install a userscript manager:

• Chrome/Edge: Tampermonkey
• Firefox: Greasemonkey or Tampermonkey

2. Create a new userscript and paste in the contents of main.js.

3. Ensure the script runs on:

• https://web.skype.com/*

4. Open https://web.skype.com, start a conversation, and use the commands below.

Note: Because Skype Web evolved, this script may no longer hook the same DOM/events. The README preserves the original behavior for reference.

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Usage

Prefix messages with a # to enable transformation. Commands are inline and can be combined.

• # — Start/enable transformation for the current message.
• !<size>! — Set the font size (e.g., !4!). Skype sizes range from 1 (smallest) to large values; 9 was the original default.
• #[website](text) — Render a link where the display text differs from the destination.
• ## — Passthrough mode. If the command starts with ##, everything after is pasted into Skype verbatim (double hashtags removed) and HTML entities are unescaped.

Examples:

# [website](text)!font size!
    -> Link spoofed with font size changed

# !font size!text here
    -> Text with font size changed

# [website](text)
    -> Link spoofed (text vs href)

Full examples from the original script:

#[www.google.com](facebook.com)!4!

Becomes

<font size="4"><a href="https://www.google.com">facebook.com</a></font>

#!4!SkypeDestroyer

Becomes

<font size="4">SkypeDestroyer</font>

Notes:

• “Unescaped HTML” means Skype’s automatic escaping is bypassed. Treat this as unsafe input; do not paste untrusted content.
• Default Skype font size was 9 at the time; sizes may behave differently now.

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How it works (high level)

• Runs as a userscript on web.skype.com.
• Watches the message compose area and intercepts content on send.
• Parses simple inline commands (e.g., #, !<size>!, #[url](text), ##).
• Transforms the outgoing HTML accordingly (e.g., injects <font size="...">, creates custom <a href=...> anchors, or sends unescaped HTML).