IsItWP is a free online scanner that tells you if a website runs WordPress and, if it does, which theme and plugins it uses. The site also offers a hosting lookup. It is still active as of November 2026. Awesome Motive Inc manages it for WPBeginner LLC, and the site dates from 2015.
People leave it for two reasons. Some want more detail on a WordPress site, such as theme versions, plugin prices or child themes. Others need to identify sites that are not on WordPress at all. The first four picks below handle the WordPress question. The rest detect any technology, and the last one checks a WordPress site for security problems.
Prices below are as of November 6, 2026. Our method is on How we review tools.
Quick comparison
| Tool | Best for | Price | Platforms |
|---|---|---|---|
| Scan WP | Theme version, vendor and plugin prices | Free | Web, Chrome |
| WPThemeDetector | A quick second opinion on a theme | Free | Web |
| What WordPress Theme Is That | Parent and child theme names | Free | Web |
| Wappalyzer | Detecting any tech stack from a browser | Free (50 lookups/mo), from $250/mo | Chrome, Firefox, Edge, Safari |
| BuiltWith | Technology history and lead lists | Free lookups, from $295/mo | Web, browser extension |
| WhatRuns | Free one-click checks of plugins and fonts | Free | Chrome |
| WPScan | Finding outdated or vulnerable plugins | Free CLI, 25 API calls/day | Command line, API |
Scan WP
Where IsItWP names a theme, Scan WP fills in the details around it: the theme's vendor, version, price and how common it is, plus a buy link. Each plugin it finds shows a price, a usage percentage and a download link.
It also detects the hosting provider, and the page says there is no limit on the number of sites you check. A Chrome extension, linked from the footer, runs the same scan from your browser.
Best for: Rebuilding a site you admire, theme version and plugin list included.
Pricing:
- Free for all users, with no scan limits stated.
Watch out for:
- The page says using the tool opens an offer from a relevant service, so expect a promotion with each scan.
- Plugin and theme buy links are sales links, so treat the "price" field as a starting point, not a quote.
Official site: Scan WP.
WPThemeDetector
One of the oldest tools for the job, WPThemeDetector dates from 2012 and still runs in 2026. You paste a URL and it returns information on the WordPress theme and the plugins in use, and the page promises "And more."
It is free, and the page mentions no account. Use it as a cross-check when IsItWP and Scan WP disagree on a theme name, which happens when a developer has renamed a theme folder.
Best for: A no-signup second opinion on a theme.
Pricing:
- Free. No limits or paid tier listed.
Watch out for:
- WPThemeDetector does not publish the fields it returns or any usage limits, so you only see what it covers after a scan.
Official site: WPThemeDetector.
What WordPress Theme Is That
Child themes trip up simple detectors, which often report only the child's folder name. What WordPress Theme Is That says it detects both the parent and the child theme, plus plugins, so you can see that a site runs, say, a child of a well-known framework.
It describes itself as a free online tool. The only contact listed is an info@ email address.
Best for: Sites built on a child theme where the parent matters.
Pricing:
- Free.
Watch out for:
- The site shows little sign of recent upkeep, so check results against a second tool.
Official site: What WordPress Theme Is That.
Wappalyzer
IsItWP answers one question. Wappalyzer answers it for every technology it recognises on a page, WordPress included. The browser extension is available for Chrome, Firefox, Edge and Safari and shows the stack of whatever site you visit.
A free account includes 50 technology lookups and 50 email verifications a month, 5 website alerts and sample lead lists. Paid plans add bulk lookups and lead lists for sales teams.
Best for: Identifying the full stack of any site, WordPress or not, while you browse.
Pricing:
- Free account: 50 lookups a month, 5 website alerts.
- Pro: $250/month, 1 user, 5,000 lookups.
- Business: $450/month, 5 users, 20,000 lookups.
- Enterprise: from $850/month. Annual billing saves 17%.
Watch out for:
- Wappalyzer is now closed source, including the extension. HTTP Archive maintains a fork of the last open-source version.
- The free account stops at 50 lookups a month, and the next step, Pro, costs $250 a month.
Official site: Wappalyzer.
BuiltWith
BuiltWith looks up the technologies behind a site, and its plans page says it is "free to use for individual site lookups forever". Paid plans add Trends and Technology History, which shows when a site moved to WordPress or dropped a tool.
The paid side is a sales tool. Plans build lists of every site using a given technology, with contact names, CSV export and Salesforce and HubSpot integrations.
Best for: Researching how a site's stack changed, or finding every site that uses a plugin.
Pricing:
- Individual site lookups: free.
- Basic $295/month, Pro $495/month, Team $995/month.
Watch out for:
- The cheapest plan tracks only 2 technologies at $295 a month, a steep step up from the free lookup.
Official site: BuiltWith.
WhatRuns
A single click on WhatRuns lists WordPress plugins, fonts, CDNs, web apps and tracking tools on the open tab. It is a free browser extension, and the site says it has 450k+ active users.
Its team says it adds 50 to 100 new web apps to the detection list every day. Font detection is the unusual extra, handy for naming a typeface on someone else's site.
Best for: Free, quick checks of plugins and fonts while browsing in Chrome.
Pricing:
- Free, per the home page. No paid tier listed.
Watch out for:
- Only Chrome is named on the site, which has had no update since 2025.
- The home page does not mention theme detection, so pair it with IsItWP or Scan WP for the theme.
Official site: WhatRuns.
WPScan
Detection is the first step of a security check, and WPScan is built for that step. Automattic runs it. The command-line scanner is free for everyone without an API token, and the free Researcher API adds vulnerability data for non-commercial use.
The same data feeds Jetpack Protect, a free WordPress plugin. Enterprise plans add instant email alerts, Slack and webhook notifications and CVSS risk scores, priced by number of sites.
Best for: Site owners and agencies checking their own WordPress sites for risky plugins.
Pricing:
- CLI scanner: free without the API.
- Researcher API: free, capped at 25 API calls a day, non-commercial.
- Enterprise: custom pricing by number of sites.
Watch out for:
- The pricing page says the WPScan API is not open source and commercial use needs a paid licence.
- It is a command-line tool, so it is overkill if you only want a theme name.
Official site: WPScan.
How to choose
| If you need | Pick |
|---|---|
| Theme version, vendor and plugin prices | Scan WP |
| A second opinion when results disagree | WPThemeDetector |
| The parent theme behind a child theme | What WordPress Theme Is That |
| Every technology on any site, in my browser | Wappalyzer |
| When a site changed its stack | BuiltWith |
| The font on a page I like | WhatRuns |
| Known vulnerabilities in my own plugins | WPScan |
When to stay with IsItWP
Stay with IsItWP if all you need is a yes or no on WordPress and the theme name. It is free, needs no account and is maintained by the team behind WPBeginner. Switch when you need theme versions and plugin prices (Scan WP) or a full stack on non-WordPress sites (Wappalyzer).
Frequently asked questions
What is IsItWP?
A free tool from WPBeginner, managed by Awesome Motive, that checks if a website is built on WordPress and lists the theme and plugins it detects. It also has a hosting lookup.
Is IsItWP free?
Yes. The site calls itself a free WordPress theme scanner and lists no usage limits. You do not need an account.
How can I tell what WordPress theme a site is using?
Paste the address into IsItWP or Scan WP. If the result looks like a random folder name, the developer probably renamed the theme or built a child theme, so try What WordPress Theme Is That for the parent. You can also open the page source and look for /wp-content/themes/ followed by the folder name.
Why can't a detector find the theme or plugins?
Detectors read public code. Custom themes, renamed folders, caching that merges files, and security plugins that hide WordPress paths all remove the clues they rely on. Plugins that only run in the admin area never appear on the public page at all.
