Question 1

How do I parse a large WARC file without loading it all into memory?

Accepted Answer

Use the WARCStreamTransform for stream-based processing or the async recordIterator for incremental parsing, both designed to handle large archives efficiently in Node.js.

Question 2

node-warc vs warcio: which is better for web archiving?

Accepted Answer

node-warc is Node.js-native and integrates with browser automation tools, while warcio is Python-based; choose based on your language stack and whether you need built-in capture features.

Question 3

How to capture a Puppeteer session and save it as a WARC file?

Accepted Answer

Use the PuppeteerCapturer to start capturing network requests, then the PuppeteerWARCGenerator to generate the WARC file after navigation, as shown in the README example with waitUntil options.

Question 4

Does node-warc support WARC 1.1 format specifications?

Accepted Answer

The library handles standard WARC formats, but for specific version compliance, check the documentation or source code, as the README doesn't explicitly mention WARC 1.1 support.

Question 5

Can I use node-warc with headless browsers other than Chrome?

Accepted Answer

It primarily supports Chrome-based tools (Puppeteer, Chrome Remote Interface) and Electron; for other browsers, you might need custom adapters or rely on the request module for basic HTTP capture.

Question 6

What's the best way to handle errors when creating WARC files?

Accepted Answer

Listen for error events on parsers or use try-catch in async functions, as demonstrated in the examples, but advanced scenarios may require manual inspection of network capture logs.

node-warc

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