The technologies that generate a large amount of meaningless web content mainly include the following: 1. **Text generation models**: Modern natural language processing (NLP) models, such as GPT-3, GPT-4, etc., can generate fluent text. By adjusting prompts and parameters, these models can quickly generate a large amount of content. 2. **Web crawlers and data scraping**: Use crawler technology to crawl data from existing web pages, and then modify and reorganize them to generate new content. 3. **Template generation**: Pre-design web page templates, and automatically fill in random or generated text through programming (such as Python, JavaScript, etc.). 4. **Content splicing**: Collect short sentences, paragraphs or specific keywords from multiple sources and splice them into new content, which may not be logical. 5. **Random content generator**: Use algorithms to generate random words, sentences or paragraphs, which usually lack practical meaning, but can quickly generate a large amount of text. 6. **Pseudocode generation tools**: Use certain tools to generate "seemingly reasonable" code or text according to rules, although they actually have no meaning. It should be noted that although these technologies can generate a large amount of content in a short period of time, the generated content often lacks quality and value and may violate search engine policies or laws and regulations. Therefore, caution should be exercised when using them.