Social & ForumsDifficulty: Moderate

Reddit Data Extraction

Extract publicly available data from Reddit at scale using AlterLab's API — JavaScript rendering, structured extraction, and automatic retries in one request.

Automatic renderingJavaScript supportStructured data extractionChallenge resolution

Website Compatibility Notes

Reddit serves different content based on user agent and requires JavaScript rendering for the new UI. The JSON endpoints offer structured data directly.

Quick Start — Extract from Reddit

cURL

curl -X POST https://alterlab.io/api/v1/scrape \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "url": "https://www.reddit.com/r/webdev/top/.json",
    "advanced": { "render_js": true }
  }'

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Python Example

Python

import requests

response = requests.post(
    "https://alterlab.io/api/v1/scrape",
    headers={
        "X-API-Key": "YOUR_API_KEY",
        "Content-Type": "application/json",
    },
    json={
        "url": "https://www.reddit.com/r/webdev/top/.json",
        "advanced": {"render_js": True},
    },
)

data = response.json()
print(data["content"][:500])  # First 500 chars of extracted content

Frequently Asked Questions

How do I extract Reddit post data?

AlterLab can render Reddit's JavaScript-heavy interface and return full post content. Alternatively, append .json to Reddit URLs for structured JSON responses that include post titles, scores, comments, and metadata.

Can I extract Reddit comments and replies?

Yes. AlterLab renders the full comment tree including nested replies. For large threads, use the permalink URL of specific comment threads to extract targeted discussions.

What is the best approach for Reddit subreddit data?

Request subreddit listing pages with JavaScript rendering enabled. AlterLab returns the full rendered page with post titles, vote counts, comment counts, and timestamps for each listing.

Responsible Use

AlterLab is designed for extracting publicly available data. Always review the terms of service for any website you access, respect robots.txt directives, and ensure your use case complies with applicable laws in your jurisdiction. Do not use this service to access non-public, authenticated, or personally identifiable data without appropriate authorization.

Your first scrape.
Sixty seconds.

$1 free balance. No credit card. No SDK.
Just a POST request.

terminal

curl -X POST https://api.alterlab.io/v1/scrape \

-H "X-API-Key: YOUR_KEY" \

-H "Content-Type: application/json" \

-d '{"url": "https://example.com", "formats": ["markdown"]}'

No credit card required · Up to 5,000 free scrapes · Balance never expire