How to Scrape a Whole Site: Step-by-Step Guide for 2026
Practical guide to discover, crawl, extract and store all pages safely — includes command-line, Python and headless browser examples.
Jan 12, 2026
Step-by-Step guide to use ChatGPT for scraping: prompts, code, parsing, validation, and compliance.
Want ChatGPT to help you to simplify the process — generating scrapers, parsing messy HTML into clean JSON, or automating data pipelines — but not sure where to start (or what’s allowed)? This guide shows how to use ChatGPT responsibly as an assistant in scraping workflows: generate scraper code, extract & clean HTML, parse messy text into structured JSON, and operate reliable pipelines — all while staying legal, maintainable, and practical.

Don’t programmatically scrape the ChatGPT web UI — use official APIs for programmatic access.
Use ChatGPT to generate and refine code and parsing prompts, and pair it with proper extraction tools (requests / headless browser → cleaner → AI parsing → validation).
Mainly because it democratizes coding. Traditional scraping requires proficiency in languages like Python and libraries such as BeautifulSoup or Scrapy, but ChatGPT can generate ready-to-use code in seconds. This is especially appealing for beginners or those prototyping ideas quickly.
Key benefits include:
However, concerns arise: Can ChatGPT actually scrape data? We will cover next.
Generate starter scraping scripts (Python/JS) and explain code.
Suggest CSS/XPath selectors, pagination logic, and parsing patterns.
Help debug code and propose optimizations (caching, concurrency ideas).
Produce deterministic prompts to convert cleaned text to JSON.
× Perform live scraping itself (it doesn’t execute code or browse).
× Be used to programmatically extract ChatGPT UI outputs (automated scraping of the service UI is typically disallowed).
× Reliably bypass anti-scraping defenses or CAPTCHA (do not attempt to evade protections).
Before scraping:
√ Confirm the target allows scraping (TOS) or obtain permission.
√ Check robots.txt for crawl preferences (informational).
√ Search for an official API or data export.
√ Avoid scraping personal data without legal basis (consent, contract, legitimate interest).
√ Do not bypass CAPTCHA or access controls; do not use techniques to evade site rules.
√ Document your crawl design and retention policy for audits.
Beginner tip: To verify legality, you can search site terms for keywords like “automated access,” review the privacy policy, and consult legal counsel for large or sensitive projects.
If you're new to this (e.g., no Python experience), start here:
1. Install Python (3.8+): Download from python.org and verify with python --version in your terminal.
2. Set up a virtual environment: Run python -m venv myenv and activate it (source myenv/bin/activate on Unix or myenv\Scripts\activate on Windows) to keep dependencies clean.
3. Install libraries: Use pip install requests beautifulsoup4 playwright pytest jsonschema (add more as needed per workflow).
4. Test ChatGPT: Log in and try a simple prompt like "Hello, explain web scraping basics."
5. Check site TOS: Visit your target site's /terms and /robots.txt.
Start with desired output: show a sample JSON or CSV row.
Declare libraries & language: e.g., “Write Python 3 code using requests and BeautifulSoup.”
Be explicit about edge cases: missing fields → null, format conversions (price→float), pagination rules.
Ask for tests: “Include a unit test for parse_page(html) with sample HTML.”
Ask for comments: “Explain each step in a short comment block.”
For Static:
"Write a Python 3 script using requests + BeautifulSoup to scrape https://books.toscrape.com for fields: title (article.product_pod h3 a -> title), price (p.price_color). Handle pages 1–3. Save UTF-8 CSV books.csv. Include a 1 second delay, a User-Agent header, and basic retry on network errors."
For Dynamic:
"Write a Python script using Playwright (sync) to open https://example-js-site.com, wait for '.product-list' to be present, extract each '.product-card' outerHTML to raw_html/<id>.html, and then parse those files with BeautifulSoup for title and price. Include comments and a headless option."
For AI parsing:
"You are a JSON extractor. Input: cleaned HTML text. Output EXACTLY one JSON object with fields: title (string|null), price (number|null), in_stock (boolean|null), specs:{weight,dimensions,battery}. Reply ONLY with valid JSON. If missing, field=null."
These are the general steps you’ll see mapped across workflows. Read once, then jump to the workflow that fits you.
Open DevTools, find CSS selectors or JSON-LD.
Prompt tip: When asking ChatGPT for selectors, paste a short HTML snippet so it can suggest precise CSS/XPath.
Use requests for static pages or Playwright/Selenium for JS pages. For higher request volumes or geographically sensitive pages, using a reputable rotating proxy service can help maintain stable access and distribute requests responsibly.
Prompt tip: Tell ChatGPT which extraction method in your prompt: “use requests” or “use Playwright”.
Remove <script>/<style> and isolate the main container (BeautifulSoup / Cheerio).
Prompt tip: Provide a cleaned HTML example and your desired JSON schema when asking the model to help parse.
Deterministic prompts to the model (or deterministic selectors).
Prompt tip: “Reply ONLY with JSON; use null for missing fields.”
Validate with JSON Schema, convert types (price→float), and save raw snapshots for audits.
Log errors, set alerts for parser drift, and schedule re-checks.
When to use: Page data is present in the initial HTML (no heavy JS).
Steps:
1. Inspect → identify CSS selectors.
2. Extract → requests / requests.Session().
3. Clean → lightweight; parse with BeautifulSoup.
4. Parse → map selectors and convert types.
5. Validate & store → CSV or newline JSON + raw HTML snapshot.
6. Monitor → daily/weekly checks.
Starter code example:
# static_scraper.py
# static_scraper.py
import requests, csv, time, re
from bs4 import BeautifulSoup
from urllib.parse import urljoin
BASE = "https://books.toscrape.com/catalogue/page-{}.html"
HEADERS = {"User-Agent": "Mozilla/5.0 (compatible)"}
def parse_price(price_str):
if not price_str:
return None
s = re.sub(r'[^\d.,\-]', '', price_str)
s = s.replace(',', '') # adjust for locale if needed
try:
return float(s)
except ValueError:
return None
def parse_page(html, base_url):
soup = BeautifulSoup(html, "html.parser")
rows = []
for card in soup.select("article.product_pod"):
title = card.select_one("h3 a")["title"].strip()
price_raw = card.select_one("p.price_color").get_text(strip=True)
price = parse_price(price_raw)
href = card.select_one("h3 a")["href"]
url = urljoin(base_url, href)
rows.append({"title": title, "price": price, "url": url})
return rows
def main():
s = requests.Session()
s.headers.update(HEADERS)
out = []
for page in range(1, 4):
url = BASE.format(page)
r = s.get(url, timeout=10)
if r.status_code != 200:
break
out += parse_page(r.text, url)
time.sleep(1)
with open("books.csv", "w", newline="", encoding="utf-8") as f:
writer = csv.DictWriter(f, fieldnames=["title","price","url"])
writer.writeheader()
writer.writerows(out)
if __name__ == "__main__":
main()
Check: Test selectors in DevTools, start small, save raw snapshots.
When to use: Data loads after client rendering (SPAs, infinite scroll).
Steps
1. Inspect → identify element(s) indicating data is loaded.
2. Extract → Playwright or Selenium; wait for key selector or networkIdle.
3. Clean → extract outerHTML for main container and save snapshot.
4. Parse → apply BeautifulSoup/Cheerio on the saved HTML.
5. Validate & store → as in Workflow A.
6. Monitor → check for flaky loads/timeouts.
Playwright example (sync)
# dynamic_scraper.py
from playwright.sync_api import sync_playwright
from bs4 import BeautifulSoup
def scrape():
with sync_playwright() as p:
browser = p.chromium.launch(headless=True)
page = browser.new_page(user_agent="Mozilla/5.0 (compatible)")
page.goto("https://example-js-site.com/category")
page.wait_for_selector(".product-list", timeout=15000)
html = page.content()
browser.close()
soup = BeautifulSoup(html, "html.parser")
rows = []
for card in soup.select(".product-card"):
title = card.select_one(".product-title").get_text(strip=True)
price_raw = card.select_one(".price").get_text(strip=True)
rows.append({"title": title, "price_raw": price_raw})
return rows
if __name__ == "__main__":
data = scrape()
# save to CSV/JSON...
Notes: Simulate scroll for infinite-scroll; snapshot HTML for debugging; ensure browsers/drivers are installed. For browser-based scraping at scale, pair rotating residential proxies with headless browsers to ensure session stability across regions.
When to use: Many templates, important info embedded in prose, or you must normalize fields across diverse pages.
Why: Extraction (deterministic) + AI parsing (flexible) lets you create a stable pipeline where the heavy lifting of fetching is separated from the flexible mapping of unstructured text → structured data.
Pipeline:
1. Extract HTML (requests or headless) and save raw snapshot.
2. Pre-clean: remove scripts/styles, isolate main container.
3. Chunk cleaned text: aim for ~1.5k–2k tokens (≈2–4 KB) per chunk; include metadata {page_id, chunk_index, chunk_count}.
4. Parse each chunk with a deterministic prompt requiring a single JSON object and null for missing fields.
5. Merge chunk outputs with deterministic rules (see pseudocode).
6. Validate merged JSON against a JSON Schema. Flag failures for manual review.
7. Store validated JSON + raw HTML snapshots.
Example parsing prompt:
"You are a JSON extractor. Input: cleaned HTML text for one product. Output EXACTLY one JSON object with fields: title (string|null), price (number|null), in_stock (boolean|null), specs:{weight (string|null), dimensions (string|null), battery (string|null)}. Reply ONLY with valid JSON; no commentary. If a field is missing, use null."
import re
def parse_price(price_str):
if not price_str: return None
s = re.sub(r'[^\d.,\-]', '', price_str)
s = s.replace(',', '') # adjust for locale when necessary
try:
return float(s)
except ValueError:
return None
import time
def get_with_backoff(session, url, max_attempts=4):
for attempt in range(1, max_attempts+1):
r = session.get(url, timeout=10)
if r.status_code == 200:
return r
time.sleep(2 ** attempt)
return None
{
"type": "object",
"properties": {
"title": {"type": ["string","null"]},
"price": {"type": ["number","null"]},
"in_stock": {"type": ["boolean","null"]},
"specs": {"type": ["object","null"]}
},
"required": ["title"]
}
Use the jsonschema Python package to validate before storing.
Unit tests: create fixtures of sample HTML and assert parse_page outputs expected values (use pytest).
Integration tests: run a small sample crawl in CI against allowed demo pages to detect regressions.
Scheduled checks: nightly job to fetch a few key pages and compare field consistency; alert when null rate increases beyond threshold.
403 / 401: Check TOS, required authentication, cookies; do not hide intent or illegally bypass access control.
Empty selectors: Verify selectors in DevTools; add fallbacks for template variations.
Rate limits / 429: Honor server signals, implement backoff and lower frequency.
Token limits when parsing: Chunk content and include context markers for reconstruction.
Hallucinated AI outputs: enforce JSON Schema and numeric checks; flag mismatches for manual review.
Design crawlers to minimize load: use rate limits, caching, targeted updates, and exponential backoff. If you need larger capacity, use reputable providers or managed crawling services(like GoProxy) for throughput — not to conceal identity or evade restrictions. Always document and justify your approach for compliance.
Q: Can I scrape ChatGPT conversations?
A: Not programmatically from the web UI. Manual exports are typically allowed; for automated needs, use the service’s official API.
Q: How often should I re-check selectors?
A: Depends on site volatility — weekly for marketplaces, monthly for stable sites.
Q: Are free proxies okay?
A: Generally, no — they’re unreliable and risky. Use reputable providers and comply with laws/TOS.
AI parsing will become easier as context windows grow and native chunking appears in APIs.
Platforms will favor official APIs and partnerships over UI scraping.
On-premise parsing models will be more common for sensitive data to reduce compliance and cost concerns.
Treat ChatGPT as an intelligent assistant, not a crawler. Use it to write cleaner code, design robust parsing logic, and iterate faster when sites change — but keep extraction deterministic, auditable, and legally sound. Start with the static workflow, validate outputs, and only move to headless or AI parsing when needed. Build monitoring and schema validation into day-one workflows so your pipeline remains reliable.
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