Hướng dẫn nhanh
This guide covers every Web Scraper feature:
- Bắt đầu — Tạo tài khoản và thiết lập cơ bản
- How to Use Point-and-Click Interface — Build scrapers visually without writing any code
- How to Use Extract Data — Pull structured data from any page on a site
- How to Use Handle JavaScript Sites — Scrape dynamic pages that load content with JS
- How to Use Customize Data — Adjust and clean your scraped rows before export
- How to Use Export Data — Save results as a CSV file, XLSX, or JSON
Thời gian cần thiết: 5 phút cho mỗi phim
Cũng trong hướng dẫn này: Mẹo chuyên nghiệp | Những lỗi thường gặp | Khắc phục sự cố | Chạy | Các lựa chọn thay thế
Tại sao nên tin tưởng hướng dẫn này?
I have used Web Scraper for over six months and tested every feature in this tutorial. This article comes from real hands-on experience — not marketing fluff.
Web Scraper is one of the most beginner friendly guide tools for browser-based dữ liệu chiết xuất.
Nhưng hầu hết người dùng chỉ mới khám phá một phần nhỏ khả năng của nó.
This guide shows you how to use webscraper step by step.
Every feature is covered with screenshots and helpful tips.
Web Scraper Tutorial
This complete how to use Web Scraper tutorial walks you through every feature step by step, from initial setup to advanced methods that make you a power user.
Trình thu thập dữ liệu web
Scrape sites directly from your browser with zero code. Web Scraper lets you extract data from any website and export it as CSV, XLSX, or JSON. Start free — no credit card required.
Getting Started with Web Scraper
Trước khi sử dụng bất kỳ tính năng nào, hãy hoàn tất thiết lập một lần này.
Quá trình này mất khoảng 3 phút.
Hãy xem đoạn video tổng quan ngắn này trước nhé:
Bây giờ chúng ta hãy cùng xem xét từng bước một.
Bước 1: Tạo tài khoản của bạn
Go to the Web Scraper website at https://webscraper.io/ in your browser.
Nhấp vào 'Đăng ký' hoặc 'Bắt đầu dùng thử miễn phí'.
Enter your email and create a password to set up your account.
✓ Điểm kiểm tra: Kiểm tra của bạn hộp thư đến để nhận email xác nhận.
Bước 2: Cài đặt tiện ích mở rộng trình duyệt
Open the Chrome Web Store and search for “Web Scraper” to find the extension.
Click “Add to Chrome” and confirm the download.
The extension also works on Windows, macOS, and Linux desktops.
Đây là giao diện của bảng điều khiển:
✓ Điểm kiểm tra: You should see the Web Scraper tab in DevTools.
Bước 3: Hoàn tất thiết lập ban đầu
Open DevTools (F12) and click the Web Scraper tab to load the interface.
Create your first sitemap by pasting the URL of the site you want to scrape.
✅ Hoàn thành: Bạn đã sẵn sàng sử dụng bất kỳ tính năng nào bên dưới.
How to Use Web Scraper Point-and-Click Interface
Point-and-Click Interface lets you create a scraper visually by selecting correct elements on the page.
Dưới đây là hướng dẫn sử dụng từng bước.
Step 1: Open the Sitemap Editor
Navigate to the site you want to scrape in your browser.
Open DevTools and click the Web Scraper tab to begin.
Step 2: Select Elements Visually
Click “Add new selector” and choose your selector type.
Click directly on the page elements you want to scrape.
Web Scraper highlights the correct elements and suggests CSS selectors for you.
For example, clicking a product title auto-generates the matching selector.
Đây là hình ảnh minh họa:
✓ Điểm kiểm tra: You should see green highlights on your selected elements.
Step 3: Save Your Selector
Click “Done selecting” and then press “Save selector” to confirm.
The scraper stores the css selectors pattern for finding elements on every page.
✅ Kết quả: Your visual scraper is ready to extract data without code.
💡 Mẹo hay: Use the “Element preview” to verify your selectors grab the right data before running the full scrape.
How to Use Web Scraper Extract Data
Trích xuất dữ liệu lets you pull structured data from any web page automatically.
Dưới đây là hướng dẫn sử dụng từng bước.
Step 1: Configure Your Selectors
Set up selectors for each data point — chữ, link, image, or html header.
Use the selector tree to navigate nested elements on the page structure.
Step 2: Run the Scrape
Click “Scrape” and set your request interval and page load delay.
The scraper sends requests to each URL and starts the data extraction process.
Đây là hình ảnh minh họa:
✓ Điểm kiểm tra: You should see rows of extracted data appear in the preview.
Bước 3: Xem lại kết quả của bạn
Nhấp chuột “Duyệt” to inspect the extracted data in a table view.
Check that every column matches the data you are interested in collecting.
✅ Kết quả: You have clean, structured data ready for export.
💡 Mẹo hay: Set a 2-second delay between requests to avoid triggering rate limits on the target website.
How to Use Web Scraper Handle JavaScript Sites
Handle JavaScript Sites lets you scrape dynamic pages that load content using JavaScript.
Dưới đây là hướng dẫn sử dụng từng bước.
Step 1: Identify Dynamic Content
Check if the page loads data after the initial HTML by watching the node tree.
You may need to navigate html elements manually to confirm which ones load late.
If content appears only after JavaScript runs, you need this feature.
Step 2: Enable JavaScript Rendering
In Web Scraper Cloud, select “Full JavaScript rendering” in your sitemap settings.
Set the page load wait time so all elements fully render before the scrape starts.
Đây là hình ảnh minh họa:
✓ Điểm kiểm tra: The preview should show the dynamically loaded content.
Step 3: Test and Run
Run a test scrape on a single page to confirm the script captures every element.
Once verified, run the full scrape across all target pages on the site.
✅ Kết quả: You can now extract data from JS-heavy sites like a pro.
💡 Mẹo hay: If a site uses infinite scroll, add a “Scroll down” selector to load all content before the scrape begins.
How to Use Web Scraper Customize Data
Customize Data lets you adjust, clean, and modify your scraped data before saving it.
Dưới đây là hướng dẫn sử dụng từng bước.
Step 1: Open the Data Preview
After your scrape finishes, click “Browse” to view the raw data table.
Review each column and note any rows that need cleaning.
Step 2: Apply Regex or Text Filters
Use the “Regex” option in your selector to parse and trim unwanted text.
This is essentially a flexible pattern match that cleans data in place.
Đây là hình ảnh minh họa:
✓ Điểm kiểm tra: Your data columns should now show only the clean values.
Step 3: Rename and Reorder Columns
Edit selector names to give each column a clear, familiar header label.
Reorder selectors in the sitemap to match your final output structure.
✅ Kết quả: Your data is clean, labeled, and ready for export or analysis.
💡 Mẹo hay: Use the “Multiple” checkbox on a selector to capture all matching elements as separate rows in the output.
How to Use Web Scraper Export Data
Xuất dữ liệu lets you save your scraped results as a csv file, XLSX, or JSON file.
Dưới đây là hướng dẫn sử dụng từng bước.
Step 1: Finish Your Scrape
Wait for the scrape to complete, then click “Browse” to preview the data.
Confirm all rows and columns contain the values you expect to see.
Bước 2: Chọn định dạng xuất
Click the export button and pick CSV, XLSX, or JSON from the format list.
For most users, csv is the most flexible and widely supported option.
Đây là hình ảnh minh họa:
✓ Điểm kiểm tra: You should see a downloading prompt in your browser.
Step 3: Save the File
Pick a folder on your computer and save the exported file.
Open it in Excel, Google Sheets, or any tool that reads CSV to verify and print the data.
✅ Kết quả: Your scraped data is saved locally and ready for use.
💡 Mẹo hay: On Web Scraper Cloud, use the API or webhook to auto-send exported data to Dropbox or Google Drive.
Web Scraper Pro Tips and Shortcuts
After testing Web Scraper for over six months, here are my best tips.
User feedback on forums confirms these shortcuts save the most time.
Phím tắt
| Hoạt động | Phím tắt |
|---|---|
| Open DevTools | F12 |
| Inspect Element | Ctrl + Shift + C |
| Toggle Console | Thoát |
| Reload Page | Ctrl + R |
Những tính năng ẩn mà hầu hết mọi người bỏ lỡ
- Sitemap Import/Export: Copy and paste a JSON sitemap to quickly clone a scraper or share it with your team as a post in your project folder.
- Pagination Selector: Add a link selector for “Next” buttons to automatically navigate through multi-page search results and scrape every page.
- Scheduled Scraping: Use Web Scraper Cloud to run scrapes on a set schedule and get fresh data delivered to your inbox or service webhook.
Web Scraper Common Mistakes to Avoid
Mistake #1: Scraping Too Fast Without Delays
❌ Sai: Running scrapes with zero delay, which triggers IP blocks and error responses from the server.
✅ Bên phải: Set a 2000ms minimum delay between requests to mimic human browsing patterns.
Mistake #2: Using the Wrong Selector Type
❌ Sai: Using a “Text” selector when you need to extract href link values or image URLs from elements.
✅ Bên phải: Match the selector type to your data — use “Link” for URLs and “Image” for images.
Mistake #3: Ignoring robots.txt Rules
❌ Sai: Scraping pages blocked by robots.txt, which can lead to legal issues for businesses.
✅ Bên phải: Always check the robots.txt file before you scrape to stay compliant and avoid problems.
Web Scraper Troubleshooting
Problem: Scraper Returns Empty Data
Gây ra: The css selectors are targeting elements that no longer exist on the page.
Sửa chữa: Re-inspect the page in your browser, update your selectors, and run a test scrape.
Problem: JavaScript Content Not Loading
Gây ra: The free browser extension cannot execute JavaScript on pages that need it.
Sửa chữa: Switch to Web Scraper Cloud, which supports full JavaScript rendering for dynamic sites.
Problem: IP Gets Blocked Mid-Scrape
Gây ra: Sending too many requests too quickly triggers the target site’s anti-bot protection.
Sửa chữa: Increase your delay setting to at least 3 seconds and use proxy rotation if available.
📌 Ghi chú: If none of these fix your issue, contact Web Scraper support for an answer to your specific problem.
What is Web Scraper?
Trình thu thập dữ liệu web is a web công cụ cạo that lets you extract data from any website using your browser.
Think of it like a smart copy-paste tool for the entire web that organizes data into rows and columns.
Hãy xem đoạn video tổng quan ngắn này:
Nó bao gồm các tính năng chính sau:
- Point-and-Click Interface: Build scrapers visually without writing python or any code
- Extract Data: Pull text, links, and image URLs from any web page automatically
- Handle JavaScript Sites: Scrape dynamic content that loads via JS or Ajax requests
- Customize Data: Clean, filter, and modify scraped output before saving
- Export Data: Download your results as CSV, XLSX, or JSON in one click
Để xem đánh giá đầy đủ, hãy xem bài viết của chúng tôi. Web Scraper review.
Web Scraper Pricing
Here’s what Web Scraper costs in 2026:
| Kế hoạch | Giá | Tốt nhất cho |
|---|---|---|
| Miễn phí | Miễn phí | Casual users testing small scraping jobs |
| Dự án | 40 đô la/tháng | Người làm việc tự do running regular scrape tasks |
| Chuyên nghiệp | 80 đô la/tháng | Teams needing multiple concurrent scrapers |
| Tỉ lệ | 167 đô la/tháng | Agencies handling high-volume data extraction |
| Doanh nghiệp | Phong tục | Large businesses with custom scraping needs |
Gói miễn phí: Yes — the browser extension is completely free with no time limit.
Đảm bảo hoàn tiền: Contact support within 14 days for a refund on paid plans.
💰 Giá trị tốt nhất: Project plan — gives you cloud scraping and scheduled runs at the lowest price point.
Web Scraper vs Alternatives
How does Web Scraper compare? Here’s the competitive landscape:
| Dụng cụ | Tốt nhất cho | Giá | Xếp hạng |
|---|---|---|---|
| Trình thu thập dữ liệu web | Browser-based scraping | Miễn phí+ | ⭐ 3.5 |
| Octoparse | Thu thập dữ liệu hình ảnh không cần lập trình | 89 đô la/tháng | ⭐ 4.3 |
| ParseHub | Complex multi-level scrapes | 189 đô la/tháng | ⭐ 4.2 |
| Scrapy | Python developers at scale | Miễn phí | ⭐ 4.5 |
| Ứng dụng | Cloud scraping with actors | 49 đô la/tháng | ⭐ 4.4 |
Lựa chọn nhanh:
- Tốt nhất tổng thể: Web Scraper — free tier and easy browser extension for most users
- Ngân sách tốt nhất: Scrapy — completely free and open-source for python developers
- Phù hợp nhất cho người mới bắt đầu: Octoparse — drag-and-drop interface with built-in templates
- Best for cloud scraping: Apify — powerful actors and API access in the world of web scraping
🎯 Web Scraper Alternatives
Looking for Web Scraper alternatives? Here are the top options:
- 🚀 Octoparse: A no-code scraper with a visual workflow thợ xây, pre-built templates, and cloud service for businesses of all sizes.
- 💰 ParseHub: Handles complex sites with multi-level navigation and AJAX loading, great for users who need advanced data extraction without code.
- 🔧 Scrapy: An open-source Python framework built for developers who want full control, beautiful soup integration, and large-scale scraping.
- ⚡ Apify: A cloud platform with a marketplace of ready-made scrapers and a flexible API for developers and teams worldwide.
Để xem danh sách đầy đủ, vui lòng xem trang của chúng tôi. Web Scraper alternatives hướng dẫn.
⚔️ Web Scraper Compared
Here’s how Web Scraper stacks up against each competitor:
- Web Scraper vs Octoparse: Web Scraper is free and browser-native; Octoparse offers more power with its desktop app and cloud tools for larger projects.
- Web Scraper vs ParseHub: ParseHub handles deeper site navigation; Web Scraper wins on price and simplicity for quick one-page scrapes.
- Web Scraper vs Scrapy: Scrapy gives developers full control via Python script; Web Scraper is better for non-coders who prefer a visual approach.
- Web Scraper vs Apify: Apify excels at cloud-based tự động hóa and API access; Web Scraper is simpler for users who log into their browser and go.
Start Using Web Scraper Now
You learned how to use every major Web Scraper feature:
- ✅ Point-and-Click Interface
- ✅ Extract Data
- ✅ Handle JavaScript Sites
- ✅ Customize Data
- ✅ Export Data
Bước tiếp theo: Hãy chọn một tính năng và thử ngay bây giờ.
Most people start with Point-and-Click Interface.
Chỉ mất chưa đến 5 phút.
Câu hỏi thường gặp
Is Web Scraper free to use?
Yes. The Web Scraper browser extension is free. Paid cloud plans start at $40/month for scheduled scrapes and API access.
Can Web Scraper handle JavaScript-rendered pages?
Yes, but only on Web Scraper Cloud. The free browser extension does not execute JavaScript. Cloud plans support full JS rendering.
What formats can Web Scraper export data in?
Web Scraper lets you export data as CSV, XLSX, or JSON. Cloud users can also access data via API or webhook.
Do I need coding skills to use Web Scraper?
No. Web Scraper uses a point-and-click interface. You select elements visually — no Python, Beautiful Soup, or other code needed.
Việc thu thập dữ liệu từ web có hợp pháp không?
Generally yes, for publicly available data. Always check the site’s robots.txt and terms of service. Avoid scraping personal or private data.
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