Txxx Downloader
Reference documentation when building or supporting a browser extension that exports MP4 from TXXX watch pages—not a codegen workflow for the solo-builder journey.
Overview
TXXX Downloader is an agent skill for the Build phase that documents a browser extension workflow for saving supported TXXX watch-page videos as MP4—not a journey-wide coding assistant.
Install
npx skills add https://github.com/serpdownloaders/skills --skill txxx-downloaderWhat is this skill?
- Chrome, Firefox, Edge, Opera, and Brave browser extension positioning
- Detects player-backed media on supported watch pages
- Quality selection from exposed player streams
- MP4 export without CLI or desktop downloader tools
- Links to releases, issues, and workflow preview assets on GitHub
Adoption & trust: 934 installs on skills.sh; 2 GitHub stars; 2/3 security scanners passed (skills.sh audits).
What problem does it solve?
You want MP4 exports from supported watch pages without manual stream inspection or brittle generic downloaders.
Who is it for?
Users evaluating or maintaining the SerpApps TXXX Downloader extension and its documented workflow.
Skip if: Solo builders seeking agent skills to plan, code review, deploy, or grow a SaaS—this entry is product README, not procedural agent knowledge.
When should I use this skill?
User asks about TXXX Downloader browser extension, saving TXXX videos as MP4, or SerpApps extension links.
What do I get? / Deliverables
You understand extension capabilities (multi-browser support, quality pick, MP4 export) and where to install or report issues via the linked store and GitHub pages.
- Pointer to install URL and GitHub releases/issues
- Feature and workflow summary for the extension
Recommended Skills
Journey fit
Listed under Build/integrations only as the closest Prism shelf for browser-extension product docs; it is not a procedural agent skill for shipping SaaS. Describes player stream detection and MP4 export in the browser—integration-shaped product behavior rather than backend or agent-tooling patterns.
How it compares
Browser-extension product documentation—not an MCP server or marketing/SEO agent skill.
Common Questions / FAQ
Who is txxx-downloader for?
End users and maintainers of the TXXX Downloader browser extension who need MP4 saves from supported pages, not typical Prism journey automation.
When should I use txxx-downloader?
Rarely in the Prism journey—only if you are integrating, forking, or supporting this specific extension project referenced in the skill README.
Is txxx-downloader safe to install?
Check the Security Audits panel on this Prism page, review the GitHub source and extension permissions in your browser store listing before installing.
SKILL.md
READMESKILL.md - Txxx Downloader
# TXXX Video Downloader (Browser Extension) > Download TXXX videos as MP4 files directly from supported watch pages. TXXX Downloader is a browser extension built for users who want a straightforward way to save TXXX videos for offline viewing. It detects supported video streams from the active page, lets you choose from the qualities exposed by the player, and exports the final video as MP4 without requiring command-line tools or separate desktop software. - Save supported TXXX videos from the browser - Detect player-backed media sources from watch pages - Choose from available video qualities - Export MP4 files for easier playback and archiving - Avoid manual stream inspection and generic downloader failures ## Links - :rocket: Get it here: [TXXX Downloader](https://serp.ly/txxx-downloader) - :new: Latest release: [GitHub Releases](https://github.com/serpapps/txxx-downloader/releases/latest) - :beetle: Report bugs: [GitHub Issues](https://github.com/serpapps/txxx-downloader/issues) - :bulb: Request features: [Feature Requests](https://github.com/serpapps/txxx-downloader/issues) ## Preview  ## Table of Contents - [Why TXXX Downloader](#why-txxx-downloader) - [Features](#features) - [How It Works](#how-it-works) - [Step-by-Step Tutorial: How to Download Videos from TXXX](#step-by-step-tutorial-how-to-download-videos-from-txxx) - [Supported Formats](#supported-formats) - [Who It's For](#who-its-for) - [Common Use Cases](#common-use-cases) - [Troubleshooting](#troubleshooting) - [Trial & Access](#trial--access) - [Installation Instructions](#installation-instructions) - [FAQ](#faq) - [License](#license) - [Notes](#notes) - [About TXXX](#about-txxx) ## Why TXXX Downloader TXXX pages can expose different playback formats depending on the source and player state. Generic download tools often fail because they assume a single direct file instead of detecting the active stream after playback starts. TXXX Downloader is built to make that process simpler. Open the page, let the extension detect the media, choose the available quality, and save the result as MP4 from inside the browser. ## Features - Detects supported TXXX video streams from multiple sources - Lists available quality variants when present - In-page download button built into the video player - Converts HLS streams to downloadable MP4 files in-browser - Right-click context menu for a faster download flow - Real-time progress tracking with download speed and file size - Desktop notifications when downloads complete - Auto-saves to an organized TXXX subfolder in Downloads - Saves output as MP4 for broad compatibility - Cross-browser support for Chrome, Edge, Brave, Opera, Firefox, Whale, and Yandex ## How It Works 1. Install the extension from the latest release. 2. Open a TXXX video page and press play. 3. Let the extension detect the media source. 4. Open the popup or use the in-page download button. 5. Choose the quality or stream option you want. 6. Start the download and wait for the MP4 export to finish. 7. Save the final MP4 file locally. ## Step-by-Step Tutorial: How to Download Videos from TXXX 1. Install TXXX Downloader from the latest GitHub release. 2. Open TXXX and sign in if the page requires account access. 3. Navigate to the video page you want to keep. 4. Let the player load fully and press play. 5. Click the in-page download button on the player or open the extension popup. 6. Review the quality options shown by the extension. 7. Choose the resolution you want if multiple options are shown. 8. Start the download and wait for the MP4 export to finish. 9. Open the saved video from your Downloads folder. ## Supported Formats - Input: supported TXXX watch-page sources (flashvars, HTML5 vid