Home
Tools
Website down checker

Website down checker

Check if a site is up or down. Enter a URL to see reachability and status details. Confirm whether the issue is local or server-side.

Real-time check: Sends a direct HTTP request from your browser to test if the website responds. No AI — just a real network request.

Want to scrape data in bulk? Try Thunderbit for free.

Chrome Store Rating
PRODUCT HUNT#1 Product of the Week
Accenture logoCriteo logoGrammarly logoVerisk logoklook logoPuma logoRingCentral logoAccenture logoCriteo logoGrammarly logoVerisk logoklook logoPuma logoRingCentral logoAccenture logoCriteo logoGrammarly logoVerisk logoklook logoPuma logoRingCentral logoAccenture logoCriteo logoGrammarly logoVerisk logoklook logoPuma logoRingCentral logoAccenture logoCriteo logoGrammarly logoVerisk logoklook logoPuma logoRingCentral logoAccenture logoCriteo logoGrammarly logoVerisk logoklook logoPuma logoRingCentral logo
Automate Website Data Extraction with AIUse Thunderbit’s Chrome extension to scrape websites fast and turn pages into structured data. Extract from subpages, PDFs, docs, and images, then export in a few clicks.
chrome-web-store
Install fromChrome Web Store

Automate Website Data Extraction with AI

Thunderbit helps you scrape data from websites while you browse, using AI Suggest Fields to detect the right columns and formats. Collect structured results from listings, directories, and paginated pages, and enrich rows by scraping subpages for deeper details. Scrape content from PDFs, docs, and images, then summarize, categorize, or standardize fields as part of extraction. Export your data to Google Sheets, Airtable, or Notion, or download as CSV or JSON for your workflows.

How to Check Website Status Using Thunderbit

step_01.png
STEP 1Download and InstallDownload and install the Thunderbit Chrome Extension from the Thunderbit Chrome Extension Download Page. Once installed, log in or create a free account to get started.
step_02.png
STEP 2Open ExtensionOpen Chrome and go to the tool tab labeled "Check a Website URL". Open the Thunderbit Chrome Extension, then select the "Website Down Checker" tool. In the input field named "url", enter the website address you want to verify (for best results, include https://, such as https://example.com).
step03.png
STEP 3Click the Check website status ButtonClick the "Check website status" button. Thunderbit will test whether the URL is reachable and return a plain-text report that includes the overall status (Up or Down), the final URL attempted, the HTTP status code when available, response time in milliseconds when available, and a short explanation (such as redirect, timeout, DNS failure, or SSL error). Copy the results for sharing, or paste them into your documentation or a spreadsheet as needed.

Learn how to check whether a website is down or reachable

Check website availability by URL

Enter any website URL or domain to verify whether the site is reachable right now. Website Down Checker helps you confirm if an outage is real or if the issue is on your side, such as Wi-Fi, VPN, DNS, or browser settings. It’s built for support teams, marketers, sales reps, and operators who need a quick, reliable status check before escalating an incident.
Get Started Free
site-01-check.png

Diagnose the reason with clear status details

Get a concise report that explains why a site is Up or Down, including common causes like HTTP 200/301/302 responses, timeouts, DNS failures, SSL errors, or connection refusals. When available, it also returns the HTTP status code and response time in milliseconds. If you paste only a domain, it tries https first and then http to reduce false downtime reports.
Get Started Free
site-02-diagnose.png

Triage incidents and reduce back-and-forth

Use the output to decide your next step: retry later, switch networks, disable VPN, or contact the site owner or hosting provider with concrete evidence. Support and IT teams can paste the status report into tickets, while account managers can share it with customers to set expectations. The standardized fields make it easy to compare checks across multiple sites and times.
Get Started Free
site-03-triage.png

Monitor critical pages during launches and campaigns

Run quick checks before and during product launches, email sends, paid ads, or major content updates to confirm landing pages are reachable. Ecommerce and operations teams can validate storefront uptime, while marketing teams can verify tracking and redirects are responding as expected. The response time and status code help spot slowdowns or misconfigured redirects before they impact conversions.
Get Started Free
site-04-monitor.png

Discover More Free Tools

Technology stack checker

Analyze any website URL to identify its tech stack, including frameworks, CMS, analytics, hosting, and more. Get categorized results with versions when available to benchmark competitors and plan builds faster.

DKIM / DMARC checker

Check DKIM and DMARC DNS records for any domain to catch misconfigurations and improve email deliverability.

WHOIS lookup

Look up domain registration records to see registrar, dates, status, and available contact details. Verify ownership and spot expiration risks fast.

Website traffic estimator

Estimate monthly organic traffic for any URL, plus top keywords and sources. Quickly gauge SEO visibility to prioritize pages, campaigns, and competitors.

IP address lookup

Look up location, ISP, and network details for any IP address. Get clear insights for diagnostics, security checks, and quick reference.

SSL checker

Check any site's SSL certificate status, expiry, issuer, and encryption details to confirm a secure connection.

Domain owner lookup

Look up public domain registration details to verify ownership and contact info. Save time finding the right responsible party for a website.

Subdomain finder

Find known subdomains for any domain using public records and databases. Useful for security reviews, research, and domain inventory. Get a clean list you can act on.

MX Record Lookup

Check a domain's mail exchange records to verify email routing, priorities, and DNS setup for faster troubleshooting.

Amazon Review Exporter

Extract detailed Amazon product reviews by pasting a product URL. Instantly collect reviewer info, ratings, and more in a structured table for easy analysis.

Product Details Scraper

Scrape product details from eCommerce sites like Amazon, Walmart, Shein, Lazada, and Zalando. Collect name, brand, price, images, ratings, and reviews in structured format for quick analysis or export.

Amazon Products Scraper

Extract product info from Amazon by pasting product URLs. Get titles, prices, ratings, and more in a structured table for quick export and review.

AI Sales Email Generator

Create personalized sales emails in seconds with the free AI Sales Email Generator. Perfect for sales teams and entrepreneurs. Try it now and boost your outreach with Thunderbit’s suite of AI tools.

Image to Excel Converter

Convert images of tables, receipts, or lists into structured JSON arrays for easy export to Excel. Save time on manual data entry and ensure accuracy.

AI Email Headline Generator

Generate compelling email subject lines from a brief description. Enhance open rates with AI-powered suggestions. Fast, simple, and no sign-up required.

Phone Number Extractor

Quickly scan webpages, files, or text to find phone numbers. Get a clean, exportable list in seconds—ideal for building contact lists or verifying data.

Find More Tools Now

What users say about Thunderbit

Taryn W.Growth Strategist@Thunderbit changed how I run competitor research. I click 'AI Suggest Fields,' and it builds a clean table across paginated results—no coding, no CSS. Huge time-saver when analyzing product data from long-tail marketplaces.
Miles T.Sales Development ConsultantI use Thunderbit to grab emails and phone numbers from directories. It extracts clean contact info in one click, and exporting to Sheets or Notion takes seconds. No extra setup, no coding—just usable data ready to work with.
Rhea C.E-commerce AnalystThunderbit helps me monitor SKU data across multiple pages. I scrape the listings, then use Subpage Scraping to pull full product specs, pricing, reviews, and stock. The AI organizes everything into columns I define.
Cassian B.Real Estate AdvisorThunderbit's Scheduled Scraper makes real estate tracking easier. I describe the interval in plain English, and it automatically pulls updated listings, prices, and links without touching the setup again. Simple and very practical.
Dorian B.Content & SEO SpecialistI use Thunderbit's Field AI Prompts to clean and tag scraped blog content. It extracts titles, authors, and even suggests categories. Works great across dynamic sites and subpages—perfect for building structured SEO datasets.
Lina K.Marketplace Operations LeadWe track SKUs from niche stores using Thunderbit. Cloud Scraping handles 50 pages at a time, and for login-required sites, we switch to browser mode. It’s fast, flexible, and doesn’t need ongoing maintenance or manual edits.
Jorge F.Inbound Sales ManagerThunderbit’s AI Autofill is a lifesaver. After scraping contact info, I use it to fill lead forms directly in my browser. I just select the tab, and it fills everything using the scraped row. No manual input needed.
Alina D.Freelance ResearcherI rely on Thunderbit for extracting data from PDFs, image-based sites, and infinite scroll pages. It handles messy formats with AI and delivers ready-to-export tables I can send to Google Sheets or Airtable in seconds.
Taryn W.Growth Strategist@Thunderbit changed how I run competitor research. I click 'AI Suggest Fields,' and it builds a clean table across paginated results—no coding, no CSS. Huge time-saver when analyzing product data from long-tail marketplaces.
Miles T.Sales Development ConsultantI use Thunderbit to grab emails and phone numbers from directories. It extracts clean contact info in one click, and exporting to Sheets or Notion takes seconds. No extra setup, no coding—just usable data ready to work with.
Rhea C.E-commerce AnalystThunderbit helps me monitor SKU data across multiple pages. I scrape the listings, then use Subpage Scraping to pull full product specs, pricing, reviews, and stock. The AI organizes everything into columns I define.
Cassian B.Real Estate AdvisorThunderbit's Scheduled Scraper makes real estate tracking easier. I describe the interval in plain English, and it automatically pulls updated listings, prices, and links without touching the setup again. Simple and very practical.
Dorian B.Content & SEO SpecialistI use Thunderbit's Field AI Prompts to clean and tag scraped blog content. It extracts titles, authors, and even suggests categories. Works great across dynamic sites and subpages—perfect for building structured SEO datasets.
Lina K.Marketplace Operations LeadWe track SKUs from niche stores using Thunderbit. Cloud Scraping handles 50 pages at a time, and for login-required sites, we switch to browser mode. It’s fast, flexible, and doesn’t need ongoing maintenance or manual edits.
Jorge F.Inbound Sales ManagerThunderbit’s AI Autofill is a lifesaver. After scraping contact info, I use it to fill lead forms directly in my browser. I just select the tab, and it fills everything using the scraped row. No manual input needed.
Alina D.Freelance ResearcherI rely on Thunderbit for extracting data from PDFs, image-based sites, and infinite scroll pages. It handles messy formats with AI and delivers ready-to-export tables I can send to Google Sheets or Airtable in seconds.

Frequently Asked Questions

Extract Data using AI
Easily transfer data to Google Sheets, Airtable, or Notion
Chrome Store Rating
PRODUCT HUNT#1 Product of the Week
© 2026 Thunderbit Inc. All rights reserved.