gistify.md

gistify.md

Gistify

"Chat with any website"

jailbreak pplx to summaries any website.

1. Copy the website you want to summaries.
2. prepend this url eonist/gistify/?url=your-url-here
3. enter this prompt into pplx*ai: "What are the main points here: eonist/gistify/?url=your-url-here"

How it works:

1. we will host javascript and html on github pages
2. javascript on a html page gets value from the browser url, inserts into https://archive.today/?run=1&url=%s where $s is the url.
3. we should get the html content of this url, and render the html content on the website
4. example: github.com/eonist/gistify/?url=https://www.wsj.com/sports/basketball/nba-trades-luka-doncic-jimmy-butler-63879018
5. This should fetch the html content and present it.

Automated Web Archival Proxy Service via GitHub Pages

This report outlines the technical implementation of a web archival proxy service hosted on GitHub Pages. The system leverages modern web APIs including URLSearchParams and Fetch API to dynamically retrieve and display archived webpage content from archive.today. By analyzing the provided search results and technical requirements, we develop a comprehensive solution that addresses URL parameter handling, content retrieval, and security considerations.

URL Parameter Processing and Validation

Extracting Query Parameters with URLSearchParams

Modern web applications require robust handling of URL query parameters to ensure proper functionality. The URLSearchParams API provides a standardized interface for working with URL query strings without manual string parsing[1][3][7].

const params = new URLSearchParams(window.location.search);
const targetUrl = params.get('url');

This approach eliminates common pitfalls associated with manual parameter parsing, such as improper encoding/decoding of special characters or mishandling of duplicate parameters[5][7]. The API automatically decodes percent-encoded characters and provides type-safe access to parameter values[3][5].

Input Validation and Sanitization

Secure handling of user-supplied URLs requires multiple validation layers:

function validateUrl(input) {
  try {
    const url = new URL(input);
    if (!url.protocol.startsWith('http')) {
      throw new Error('Invalid protocol');
    }
    return url.href;
  } catch (error) {
    console.error('Invalid URL:', error);
    return null;
  }
}

This validation pattern ensures proper URL structure while restricting dangerous protocols like file: or javascript:[3][7]. The URL constructor performs automatic normalization and syntax checking[3][7].

Archive Service Integration

Constructing Archive API Requests

The archival proxy service integrates with archive.today's submission interface through parameterized URL construction:

const buildArchiveUrl = (url) => {
  const base = 'https://archive.today/?run=1&url=';
  return base + encodeURIComponent(url);
};

The encodeURIComponent function ensures proper URL encoding of special characters, maintaining compliance with RFC 3986 standards[3][7]. This encoding is crucial when handling user-supplied URLs that may contain spaces, Unicode characters, or query parameters of their own[1][3].

Content Retrieval Mechanism

The Fetch API provides modern asynchronous resource loading capabilities[2][4][6]:

async function fetchArchiveContent(url) {
  try {
    const response = await fetch(url);
    
    if (!response.ok) {
      throw new Error(`HTTP error! status: ${response.status}`);
    }

    const contentType = response.headers.get('content-type');
    if (!contentType.includes('text/html')) {
      throw new Error('Invalid content type');
    }

    return await response.text();
  } catch (error) {
    console.error('Fetch failed:', error);
    return null;
  }
}

This implementation includes essential security checks:

1. HTTP status code validation
   2. Content-Type verification
2. Error handling for network failures[2][6]

Content Rendering and Security

Safe HTML Injection

While innerHTML provides convenient content insertion, it requires careful security handling:

function renderContentSafely(html) {
  const container = document.createElement('div');
  container.innerHTML = html;
  
  // Security sanitization
  const scripts = container.querySelectorAll('script');
  scripts.forEach(script => script.remove());

  // CSS containment
  const styles = container.querySelectorAll('style,link[rel="stylesheet"]');
  styles.forEach(style => style.remove());

  document.getElementById('content').appendChild(container);
}

This sanitization process removes executable code while preserving document structure[6][8]. The implementation addresses common XSS vectors by stripping script tags and external stylesheets[6][8].

Alternative Sandboxed Rendering

For enhanced security, consider using sandboxed iframes:

function createSandboxedFrame(content) {
  const iframe = document.createElement('iframe');
  iframe.sandbox = 'allow-same-origin allow-forms allow-modals allow-orientation-lock allow-pointer-lock allow-presentation allow-scripts';
  iframe.srcdoc = content;
  document.body.appendChild(iframe);
}

The sandbox attribute enables fine-grained control over frame capabilities, balancing functionality with security[8]. This approach isolates third-party content from the parent page's execution context[8].

Complete System Implementation

HTML Structure

The core page template establishes the rendering container:

  
  Archive Proxy Service
  
    #content {
      border: 1px solid #ccc;
      padding: 20px;
      margin: 20px 0;
    }
  


  Web Archive Proxy
  
  

JavaScript Application Logic

The complete client-side implementation integrates all components:

(async function init() {
  try {
    const params = new URLSearchParams(window.location.search);
    const inputUrl = params.get('url');

    if (!inputUrl) {
      throw new Error('Missing URL parameter');
    }

    const validatedUrl = validateUrl(inputUrl);
    if (!validatedUrl) {
      throw new Error('Invalid URL provided');
    }

    const archiveUrl = buildArchiveUrl(validatedUrl);
    const htmlContent = await fetchArchiveContent(archiveUrl);

    if (!htmlContent) {
      throw new Error('Failed to retrieve archive content');
    }

    renderContentSafely(htmlContent);
  } catch (error) {
    document.getElementById('content').textContent = 
      `Error: ${error.message}`;
  }
})();

This implementation follows modern asynchronous programming patterns using async/await for improved readability over promise chains[2][4]. Error handling propagates through all stages of the workflow, providing user-facing feedback for various failure scenarios[2][6].

Security Considerations

Cross-Origin Resource Sharing (CORS)

The same-origin policy presents challenges when fetching resources from archive.today. Several mitigation strategies exist:

1. Proxy Service: Implement server-side fetching through a CORS proxy
2. Content Rewriting: Process responses to rewrite same-origin URLs
3. Meta Tag Override: Use `` to prevent referrer leakage

A hybrid approach using service workers enables advanced caching and transformation:

// service-worker.js
self.addEventListener('fetch', (event) => {
  if (event.request.url.startsWith('https://archive.today/')) {
    event.respondWith(
      fetch(event.request)
        .then(response => modifyResponse(response))
    );
  }
});

function modifyResponse(response) {
  const headers = new Headers(response.headers);
  headers.set('Access-Control-Allow-Origin', '*');
  
  return new Response(response.body, {
    status: response.status,
    statusText: response.statusText,
    headers
  });
}

This service worker implementation adds CORS headers to archive.today responses, enabling cross-origin access from the proxy page[2][6].

Content Security Policy

A strict CSP header mitigates injection attacks:

This policy restricts script execution to same-origin sources while allowing inline styles required by some archived pages[8].

Performance Optimization

Caching Strategies

Implement a caching layer using the Cache API:

const CACHE_NAME = 'archive-v1';

async function cacheResponse(url, content) {
  const cache = await caches.open(CACHE_NAME);
  const response = new Response(content);
  await cache.put(url, response);
}

async function getCachedResponse(url) {
  const cache = await caches.open(CACHE_NAME);
  return await cache.match(url);
}

Integration with the main fetching logic:

async function fetchWithCache(url) {
  const cached = await getCachedResponse(url);
  if (cached) return cached.text();

  const fresh = await fetchArchiveContent(url);
  await cacheResponse(url, fresh);
  return fresh;
}

This cache-first strategy improves load times for repeat visits while maintaining freshness through standard HTTP caching headers[2][4].

Error Handling and User Feedback

Comprehensive Error Reporting

Implement structured error handling across all system components:

const ERROR_MAP = {
  'missing_url': 'Please provide a URL parameter in the query string',
  'invalid_protocol': 'Only HTTP/HTTPS URLs are supported',
  'network_error': 'Failed to retrieve archived content',
  'invalid_content': 'The response contained unexpected content'
};

function displayError(code, details = {}) {
  const message = ERROR_MAP[code] || 'An unknown error occurred';
  const errorDiv = document.createElement('div');
  errorDiv.className = 'error';
  errorDiv.innerHTML = `
    Error: ${code}
    ${message}
    ${details.url ? `URL: ${details.url}` : ''}
  `;
  document.getElementById('content').appendChild(errorDiv);
}

This approach provides consistent user feedback while maintaining separation between technical errors and user-facing messages[2][6].

Deployment Configuration for GitHub Pages

Repository Structure

Organize project files following GitHub Pages conventions:

├── index.html
├── app.js
├── styles/
│   └── main.css
└── .github/
    └── workflows/
        └── deploy.yml

GitHub Actions Deployment

Automate deployment with GitHub Actions:

name: Deploy to GitHub Pages

on:
  push:
    branches: [ main ]

jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - run: npm install
      - run: npm run build
      - uses: peaceiris/actions-gh-pages@v3
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          publish_dir: ./dist

This workflow automates build and deployment processes, ensuring the latest version remains available on GitHub Pages[1][4].

Example Implementation

Functional Demonstration

A complete working example implements all discussed components:

// app.js
document.addEventListener('DOMContentLoaded', async () => {
  const params = new URLSearchParams(location.search);
  const userUrl = params.get('url');
  
  if (!userUrl) {
    displayError('missing_url');
    return;
  }

  try {
    const validated = validateUrl(userUrl);
    const archiveUrl = `https://archive.today/?run=1&url=${encodeURIComponent(validated)}`;
    
    const content = await fetchWithCache(archiveUrl);
    renderContentSafely(content);
    
  } catch (error) {
    displayError(error.code || 'network_error', { url: userUrl });
  }
});

Usage Example

Access the service through URL parameters:

https://username.github.io/repo/?url=https://www.wsj.com/sports/basketball/nba-trades-luka-doncic-jimmy-butler-63[8](https://www.reddit.com/r/firefox/comments/jzivo5/how_to_save_rendered_page_as_htmlonly_like/)79018

The system will:

1. Validate the provided URL
2. Construct archive.today request
3. Fetch and sanitize content
4. Render safely in the page container

Conclusion

This technical implementation provides a robust solution for web archival proxying through GitHub Pages. By leveraging modern browser APIs and following security best practices, the system achieves:

1. Safe URL parameter handling through URLSearchParams
2. Secure content retrieval using Fetch API with validation
3. Protected content rendering via DOM sanitization
4. Cross-origin compatibility through CORS strategies
5. Performance optimization with caching mechanisms

Future enhancements could incorporate service workers for offline functionality, additional archival services as fallback sources, and expanded content transformation capabilities. The architecture demonstrates how static hosting platforms like GitHub Pages can support dynamic content applications through client-side JavaScript and modern web APIs.

Citations:
[1] https://googlechrome.github.io/samples/urlsearchparams/index.html
[2] https://developer.mozilla.org/en-US/docs/Learn_web_development/Core/Scripting/Network_requests
[3] https://developer.chrome.com/blog/urlsearchparams
[4] https://mahekunnisa.hashnode.dev/fetch-api-in-javascript
[5] https://developer.mozilla.org/en-US/docs/Web/API/URLSearchParams/get
[6] https://stackoverflow.com/questions/36631762/returning-html-with-fetch
[7] https://developer.mozilla.org/en-US/docs/Web/API/URLSearchParams
[8] https://www.reddit.com/r/firefox/comments/jzivo5/how_to_save_rendered_page_as_htmlonly_like/
[9] vercel/next.js#57408
[10] https://greyboyle.hashnode.dev/javascript-fetch-api-a-complete-overview
[11] https://www.pluralsight.com/resources/blog/guides/using-fetch-with-github-api-v3
[12] https://www.screamingfrog.co.uk/how-to-fetch-render-any-site/
[13] https://stackoverflow.com/questions/72666698/github-pages-how-to-fetch-file-in-js-from-repo
[14] https://developer.chrome.com/docs/devtools/javascript/snippets
[15] https://gist.github.com/justsml/529d0b1ddc5[2](https://developer.mozilla.org/en-US/docs/Learn_web_development/Core/Scripting/Network_requests)49095ff4b890aad5e801
[16] https://developers.google.com/search/blog/2014/05/rendering-pages-with-fetch-as-google
[17] bigskysoftware/htmx#2330
[18] https://www.sitepoint.com/community/t/history-api-how-to-reload-content-on-back-and-forward-browser-clicks/303219
[19] https://www.reddit.com/r/learnjavascript/comments/rhcj00/fetching_from_a_http_site_in_github_pages/

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