Introduction

A simple and flexible & extensible utility for web scraping and HTML fetching

Waterfall-Fetch

Waterfall-Fetch is a powerful and flexible utility for web scraping and HTML fetching, employing a cascading retry approach with multiple strategies. It’s designed to provide a robust solution for retrieving HTML content from websites, even when faced with various challenges. But above all it is designed to be simple.

Quick Start

Get up and running with Waterfall-Fetch in minutes

API Reference

Explore the Waterfall-Fetch API

Key Features

Multiple Fetching Strategies

Utilizes Axios, Node-fetch, and Puppeteer for optimal content retrieval

Waterfall Approach

Intelligently cascades through strategies to ensure successful fetching

Stealth Mode

Employs Puppeteer for JavaScript-heavy sites, enhancing scraping capabilities

Customizable Strategy Prioritization

Allows you to tailor the fetching process to your specific needs

Built-in Error Handling

Robust error management for reliable scraping operations

TypeScript Support

Fully typed for enhanced developer experience and code quality

How Waterfall-Fetch Works

This diagram illustrates the cascading approach of Waterfall-Fetch:

1. It starts with the fastest method (Axios).
2. If that fails, it moves to Node-fetch.
3. If Node-fetch fails, it uses Puppeteer as a last resort.
4. If all methods fail, it returns an error.

This intelligent, tiered strategy ensures that you’re always using the most appropriate and efficient method for each unique scraping scenario, balancing speed, cost, and accuracy.

Ready to dive in? Check out our Quick Start guide to begin your journey with Waterfall-Fetch!