Jake Shore 0f4e71179d Daily backup: 2026-02-05

2026-02-05 23:01:36 -05:00

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Lightweight & Fast Browser Tools Research (Feb 2026)

Research Date: February 5, 2026
Focus: Speed-optimized HTTP clients and headless browsers

Executive Summary

The landscape of lightweight browser tools has evolved significantly, with undici dominating HTTP clients (18,000+ req/sec) and rod emerging as the fastest Go-based headless browser. Node.js 20+ delivers substantial performance improvements across all HTTP operations.

🚀 HTTP Client Libraries (Simple Fetching)

Performance Hierarchy (Node.js 20+)

Based on official benchmarks (50 TCP connections, pipelining depth 10):

Tool	Requests/sec	Relative Speed	Use Case
undici - dispatch	22,234	289% faster	Maximum performance, low-level control
undici - request	18,340	221% faster	Best balance (speed + DX)
undici - stream	18,245	220% faster	Large responses, memory efficiency
undici - pipeline	13,364	134% faster	HTTP/1.1 pipelining
superagent	9,339	64% faster	Promise-based, middleware support
http - keepalive	9,193	61% faster	Native Node.js, no dependencies
got	6,511	14% faster	Rich features, TypeScript, retries
undici - fetch	5,904	Baseline	Fetch API compatibility
node-fetch	5,945	Baseline	Polyfill legacy fetch
axios	5,708	Slowest	Browser compatibility, interceptors

Source: nodejs/undici benchmarks (Node.js 22.11.0)

1. undici ⚡ THE WINNER

What: Official Node.js HTTP/1.1 client (powers built-in fetch())
Version: 7.x (bundled in Node.js 24.x)

Performance Stats

18,000+ req/sec (vs 3,200 for native http module)
65% lower latency (p99: 85ms vs 450ms)
62% less memory (45MB vs 120MB under load)
3-5x faster than traditional HTTP libraries

Memory Footprint

Base: ~5-10MB idle
Under load (1K concurrent): ~45MB
Zero-copy buffer optimization reduces GC pressure by ~40%

When to Use

✅ Best for:

High-throughput APIs (microservices, proxies)
Low-latency requirements (user-facing apps)
Serverless functions (faster cold starts)
Production Node.js applications (v18+)

❌ Avoid if:

Need browser compatibility (use fetch or axios)
Dependencies require old http module
Running Node.js < 16

Key Features

import { request } from 'undici'

// Fastest: undici.request
const { statusCode, body } = await request('https://api.com')
const data = await body.json()

// Connection pooling (automatic)
// - Pre-allocated connections
// - Aggressive reuse (15x more efficient than http)
// - HTTP/1.1 pipelining support

Implementation Notes

Smarter connection pooling: Pre-allocated, no TCP handshake delays
Zero-copy optimization: Recycles memory buffers
Pipeline support: Queue requests like HTTP/2 multiplexing
Built-in cache interceptor (v6+)

2. got 🛠️

What: Feature-rich HTTP client, TypeScript-first
Version: 14.x+ (as of 2026)

Performance Stats

6,511 req/sec (14% faster than basic fetch)
Slower than undici but rich feature set compensates

Memory Footprint

Moderate: ~15-25MB base
Good for apps needing retries, hooks, streams

When to Use

✅ Best for:

Apps needing automatic retries with exponential backoff
Projects requiring TypeScript definitions
Complex HTTP workflows (hooks, pagination)
Developer experience over raw speed

import got from 'got'

// Rich features
const data = await got('https://api.com', {
  retry: { limit: 3 },
  timeout: { request: 5000 },
  hooks: { beforeRequest: [/* ... */] }
}).json()

3. axios 🌐

What: Universal HTTP client (browser + Node.js)
Status: Slower but most popular (legacy)

Performance Stats

5,708 req/sec (slowest among modern clients)
600ms p99 latency (7x slower than undici)
150MB memory under load

When to Use

✅ Best for:

Isomorphic code (same API in browser/Node.js)
Legacy codebases (huge ecosystem)
Teams familiar with interceptors pattern

❌ Consider alternatives for new Node.js-only projects

4. axios + cheerio 🍜

Combo: HTTP client + HTML parsing

Performance Profile

Axios: 5,708 req/sec
Cheerio: ~50-100ms parsing (10KB HTML)
Total memory: 150MB + 20-40MB (cheerio)

When to Use

✅ Best for:

Simple web scraping (static sites)
Extracting data from HTML without JS rendering
Budget-friendly scraping (no headless browser)

import axios from 'axios'
import * as cheerio from 'cheerio'

const { data } = await axios.get('https://example.com')
const $ = cheerio.load(data)
const title = $('h1').text() // jQuery-like API

❌ Won't work for: SPAs, JS-heavy sites, dynamic content

5. needle 💉

What: Lightweight HTTP client
Status: Less popular, consider undici instead

Performance Stats

Comparable to axios (~5,000-6,000 req/sec)
Lower memory than axios (~80-100MB)

When to Use

Legacy projects already using it
Better choice: Migrate to undici

6. superagent 🦸

What: Promise-based HTTP client with middleware

Performance Stats

9,339 req/sec (64% faster than axios!)
Surprisingly fast (beats got in raw benchmarks)

Memory Footprint

~30-50MB under load

When to Use

✅ Best for:

Projects needing middleware/plugin system
Chainable API preference
Faster alternative to axios

import superagent from 'superagent'

const res = await superagent
  .get('https://api.com')
  .retry(2)
  .timeout(5000)

🎭 Headless Browser Tools (Fast & Lightweight)

Performance Comparison

Tool	Language	Memory (idle)	Startup Time	Best For
rod	Go	~30-50MB	~200-400ms	Speed, stability, Go projects
chromedp	Go	~40-60MB	~300-500ms	Low-level CDP control
ferret	Go	~50-80MB	~500-800ms	Declarative scraping (AQL)
Puppeteer	Node.js	~100-150MB	~1-2s	Feature-rich, Node.js ecosystem
Playwright	Node.js	~120-180MB	~1.5-2.5s	Cross-browser testing

1. rod (Go) 🎯 GO WINNER

What: Chrome DevTools Protocol driver, high-level + low-level APIs
GitHub: go-rod/rod (5.9k+ stars)

Performance Profile

Startup: 200-400ms (2-3x faster than Puppeteer)
Memory: 30-50MB idle per browser instance
Speed: Native Go performance, thread-safe
Stability: No zombie processes (auto-cleanup)

Key Features

✅ Chained context design (easy timeout/cancel)
✅ Auto-wait for elements (no manual waits)
✅ Debugging friendly (auto input tracing)
✅ Thread-safe (safe for concurrent goroutines)
✅ Auto-find/download Chrome
✅ 100% test coverage (CI enforced)
✅ High-level helpers: WaitStable, WaitRequestIdle, HijackRequests

When to Use

✅ Best for:

Go-based scraping/automation projects
High-performance web testing
Production scraping (stability critical)
Concurrent browser operations
Projects needing low memory footprint

package main
import "github.com/go-rod/rod"

func main() {
    page := rod.New().MustConnect().MustPage("https://example.com")
    page.MustElement("button").MustClick()
    page.MustScreenshot("screenshot.png")
}

Comparison to chromedp

rod: Higher-level, better DX, auto-waits
chromedp: Lower-level, more CDP control
Performance: Similar, rod slightly faster startup

2. chromedp (Go) 🔧

What: Chrome DevTools Protocol driver (lower-level)
GitHub: chromedp/chromedp (11k+ stars)

Performance Profile

Startup: 300-500ms
Memory: 40-60MB idle
Speed: Fast, direct CDP bindings

Key Features

✅ No external dependencies
✅ Direct Chrome DevTools Protocol access
✅ Headless by default
✅ Context-based API (Go-idiomatic)

When to Use

✅ Best for:

Fine-grained CDP control
Go projects prioritizing low-level access
Headless automation (testing, PDFs)

❌ Consider rod instead for higher-level automation

package main
import (
    "context"
    "github.com/chromedp/chromedp"
)

func main() {
    ctx, cancel := chromedp.NewContext(context.Background())
    defer cancel()
    
    var title string
    chromedp.Run(ctx,
        chromedp.Navigate("https://example.com"),
        chromedp.Title(&title),
    )
}

3. ferret (Go) 📜

What: Declarative web scraping with query language (FQL)
GitHub: MontFerret/ferret (5.9k+ stars)

Performance Profile

Startup: 500-800ms (slower, abstracts browser)
Memory: 50-80MB + browser instance
Unique: SQL-like query language for scraping

Key Features

✅ Declarative FQL (Ferret Query Language)
✅ Static + dynamic page support
✅ Embeddable (use as library)
✅ Extensible

When to Use

✅ Best for:

Data extraction focus (vs automation)
Teams preferring declarative over imperative
Machine learning data pipelines
Complex scraping logic (FQL expressive)

LET doc = DOCUMENT("https://example.com", {
    driver: "cdp"
})

FOR item IN ELEMENTS(doc, '.product')
    RETURN {
        name: INNER_TEXT(item, '.title'),
        price: INNER_TEXT(item, '.price')
    }

❌ Not ideal for: Fine-grained browser control, testing

📊 Decision Matrix

Simple HTTP Fetching (No JS Rendering)

Scenario	Tool	Why
Maximum speed	`undici.request()`	18k req/sec, lowest latency
Production Node.js app	`undici`	Official, well-maintained
Need retries/hooks	`got`	Rich features, TypeScript
Isomorphic code	`axios`	Works in browser + Node.js
Static HTML parsing	`undici + cheerio`	Fast fetch + jQuery-like parsing
Legacy project	`superagent`	Good performance, chainable

Headless Browsing (JS Rendering Required)

Scenario	Tool	Why
Go project, max speed	`rod`	Fastest startup, low memory
Go project, low-level CDP	`chromedp`	Direct protocol access
Data extraction focus	`ferret`	Declarative FQL
Node.js, rich features	Puppeteer	Best ecosystem
Cross-browser testing	Playwright	Chrome/Firefox/Safari

💡 Practical Recommendations

1. Starting a new Node.js project?

→ Use undici (built into Node.js 18+)

# Already available in Node.js 18+
node --version  # v20+ recommended

2. Need to scrape static HTML?

→ undici + cheerio (10x faster than headless browser)

import { request } from 'undici'
import * as cheerio from 'cheerio'

const { body } = await request('https://example.com')
const html = await body.text()
const $ = cheerio.load(html)

3. Scraping JS-heavy sites?

→ rod (Go) or Puppeteer (Node.js)

4. Building a Go microservice?

→ Standard lib net/http for simple cases
→ rod for browser automation

5. Migrating from axios?

→ Evaluate undici (3x faster) or got (better DX)

🔬 Benchmarking Notes

Test Environment

AWS c6i.xlarge (Ice Lake 3.5GHz)
4 vCPUs, 8GB RAM
Ubuntu 22.04 LTS
Node.js 20.0.0+ / Go 1.21+

Key Takeaways

Node.js 20 is FAST: 2-5x improvements over v16 in HTTP/buffers/URL parsing
undici dominates: Official status + performance = use it
Go tools win for headless: Lower memory, faster startup vs Node.js
Avoid old patterns: url.parse(), request (deprecated), old http module
Context matters: Ops/sec ≠ real-world impact (measure your use case)

🚨 Anti-Patterns to Avoid

❌ Using axios for Node.js-only projects (use undici)
❌ Using request library (deprecated since 2020)
❌ Using headless browser for static HTML (10x slower)
❌ Using http.request without keepalive (use undici)
❌ Using RegEx for HTML parsing (use cheerio)

📚 Sources

undici official benchmarks (Feb 2026)
State of Node.js Performance 2023 (Rafael Gonzaga)
Why undici is Faster (June 2025)
rod GitHub
chromedp GitHub
ferret GitHub

🎯 Final Verdict (Feb 2026)

HTTP Clients:

undici (Node.js) - 🥇 Speed king
superagent - 🥈 Surprisingly fast, good DX
got - 🥉 Best features/speed balance

Headless Browsers:

rod (Go) - 🥇 Performance + stability
chromedp (Go) - 🥈 Low-level control
ferret (Go) - 🥉 Declarative scraping

The Rule: Use the lightest tool that works for your use case. Static HTML? HTTP client + parser. Need JS? Headless browser. Prioritize speed? undici + rod.

Last Updated: February 5, 2026
Next Review: Q3 2026 (Node.js 22 LTS, Go 1.23)

13 KiB Raw Blame History

Lightweight & Fast Browser Tools Research (Feb 2026)

Executive Summary

🚀 HTTP Client Libraries (Simple Fetching)

Performance Hierarchy (Node.js 20+)

1. undici ⚡ THE WINNER

Performance Stats

Memory Footprint

When to Use

Key Features

Implementation Notes

2. got 🛠️

Performance Stats

Memory Footprint

When to Use

3. axios 🌐

Performance Stats

When to Use

4. axios + cheerio 🍜

Performance Profile

When to Use

5. needle 💉

Performance Stats

When to Use

6. superagent 🦸

Performance Stats

Memory Footprint

When to Use

🎭 Headless Browser Tools (Fast & Lightweight)

Performance Comparison

1. rod (Go) 🎯 GO WINNER

Performance Profile

Key Features

When to Use

Comparison to chromedp

2. chromedp (Go) 🔧

Performance Profile

Key Features

When to Use

3. ferret (Go) 📜

Performance Profile

Key Features

When to Use

📊 Decision Matrix

Simple HTTP Fetching (No JS Rendering)

Headless Browsing (JS Rendering Required)

💡 Practical Recommendations

1. Starting a new Node.js project?

2. Need to scrape static HTML?

3. Scraping JS-heavy sites?

4. Building a Go microservice?

5. Migrating from axios?

🔬 Benchmarking Notes

Test Environment

Key Takeaways

🚨 Anti-Patterns to Avoid

📚 Sources

🎯 Final Verdict (Feb 2026)

13 KiB

Raw Blame History