--- title: "WordPress Tech Stack Checker: Theme, Plugins & Hosting" description: "Enter any URL to reveal a WordPress site's theme, plugins, hosting, CDN, and speed. Get the full tech stack report as a free PDF, no signup to preview." canonical_url: "https://themesniffer.com/tools/wordpress-tech-stack/" author: "Ruslan Saifullin" source: "Generated from HTML by scripts/build-markdown.mjs — do not edit by hand." --- Free WordPress Tool # See any site's full WordPress tech stack Paste a URL to reveal the theme, plugins, hosting, CDN, and speed behind any WordPress site. Preview it free, then save the complete report as a PDF. Rated **5.0/5** on Chrome Web Store **Private**: no site data stored Results in **~5 seconds** The Report ## Five layers of any WordPress site, in one report Most people can name the theme. This report shows you the whole stack that makes a site look, load, and rank the way it does. ### Theme The active theme with its version and author, cross-checked against the WordPress.org directory so you can find it, price it, or study how it is built. ### Plugins The plugins loading on the page, grouped by job: SEO, forms, caching, security, eCommerce, page builders, and more. This is where a site's real strategy shows. ### Hosting The hosting provider behind the site, read from its response headers. Managed hosts like WP Engine, Kinsta, and SiteGround leave clear fingerprints. ### CDN Whether a CDN or security proxy sits in front of the site (Cloudflare, Fastly, CloudFront, Sucuri, and others), and which one, so you can benchmark delivery. ### Speed A speed snapshot: server response time, page weight, request count, compression, and HTTPS, rolled into a single score with a fix list you can act on. ### A fix list you can use The full PDF ends with a prioritised checklist based on what we found, so you leave with clear next steps, not just numbers. ## How the report is built No install, no login. We read the same public data your browser sees, then organise it into a report. ### 1\. Paste a URL Type any domain. We normalise it for you, so `example.com` and `https://example.com` both work. ### 2\. We scan it Our server fetches the page, reads its source and response headers, times the response, and matches everything against our detection library. ### 3\. Read and download The overview appears in seconds. Unlock the full itemised report with your email and save it as a PDF to keep or share. Who uses it ## What people do with a tech stack report The same report answers very different questions depending on who is holding it. Agencies ### Scope a project before you quote Pull a prospect's stack in one step. Knowing they run Elementor on shared hosting with no caching tells you exactly what a redesign or speed project involves before the first call. Marketers ### Reverse-engineer a competitor See the SEO, forms, and conversion plugins a rival relies on. If three competitors all run Rank Math and WP Rocket, that is market validation you can act on. Buyers ### Do due diligence on a site purchase Before buying a website or business, check what it is actually built on. Premium themes, licensed plugins, and the host all affect what you are really acquiring. Designers ### Find the theme you fell for Spotted a layout you love? Get the theme name and version, then buy it or rebuild the look instead of guessing for hours. Site owners ### Audit your own build Run your own domain to see what a stranger sees: your host, your plugins, your page weight, and the quick wins sitting in the fix list. Freelancers ### Inherit a client site fast Taking over a site you did not build? The report gives you a map of the theme, plugins, and host on day one, so nothing surprises you later. ## What we can and can't detect You should know where detection is solid and where it can only guess. Here it is, plainly. ### Detected reliably - Active theme when the site loads assets from `/wp-content/themes/` - Plugins that load front-end CSS or JavaScript from `/wp-content/plugins/` - Hosting and CDN when the provider leaves a header signature (most managed hosts and CDNs do) - Server response time, page weight, request count, compression, and HTTPS ### Harder to detect, or invisible - Plugins that only run in the WordPress admin or add no front-end assets - Premium themes and plugins that are not in the public WordPress.org directory (we still show the folder name) - Sites hardened to strip WordPress fingerprints, rename `wp-content`, or block automated requests - The exact origin server behind a CDN, since the CDN is what answers the request When a signal is missing, the report says **Not detected** instead of guessing. For pages that block our server, the [Chrome extension](https://chromewebstore.google.com/detail/wordpress-theme-detector/jmfelpjpndlbhbpffecppfhnfjkamiaa?utm_source=tech_stack_tool&utm_medium=website&utm_campaign=scope_section) reads the page directly in your browser and often fills the gaps. Comparison ## Report vs. manual checks vs. generic tools You can piece a stack together by hand. This is what you save by not doing that. | What you want | View source by hand | Generic tech lookups | This report | | --- | --- | --- | --- | | Theme name & version | Possible, slow | Rarely | Yes, auto | | Plugins grouped by job | Very tedious | Partial | Yes | | Hosting & CDN | Header digging | Often | Yes | | Speed snapshot | Separate tool | No | Built in | | Prioritised fix list | No | No | Yes | | Downloadable PDF | No | Rarely | Yes | | Made for WordPress | Generic | Generic | Yes | ## Why the stack matters WordPress is everywhere, and the way it is assembled decides how a site performs. ~42% of all websites run WordPress ~59% CMS market share, by far the largest 60K+ plugins in the official repository +32% bounce probability when load time goes 1s → 3s <800ms Google's benchmark for a good server response (TTFB) 13K+ free themes on WordPress.org Sources: W3Techs (2026), WordPress.org, Google/SOASTA mobile page-speed research (2017). Figures rounded. Privacy ## Honest by design How we handle your email and the sites you check, in plain terms. ### We don't store the sites you check Analysis runs on request and is cached briefly for speed, not kept as a history tied to you. Check as many sites as you like. ### Your email, used sparingly We use your address to unlock the report and send occasional WordPress tips. No daily blasts, no selling your data, unsubscribe in one click. ### Only public data The tool reads the same HTML and headers your browser receives. It never logs in or touches anything that is not already public. Read our [Privacy Policy](https://themesniffer.com/privacy) for the full details. FAQ ## Frequently Asked Questions **What does the WordPress tech stack report include?** It detects the active theme (name, version, author), the plugins loading on the page grouped by category, the hosting provider and CDN read from response headers, and a speed snapshot covering server response time, page weight, request count, compression, and HTTPS. The full PDF adds the plugin breakdown by category, a performance breakdown, and a prioritised fix list. Our guide on [how to check a WordPress site tech stack](https://themesniffer.com/blog/how-to-check-wordpress-tech-stack) explains what each of those five layers tells you. **Is the tool free?** Yes. The overview is free with no signup. To unlock the full itemised report and download it as a PDF, you enter your email once. There are no usage charges and no credit card. **Why do you ask for an email for the full report?** The overview is free to run as often as you like. The full report is our lead magnet, so we ask for an email once to unlock it and to send occasional WordPress tips. You can unsubscribe anytime, and we never sell your address. **How accurate is the plugin and hosting detection?** Plugins are detected from asset paths in the page source, so a plugin that only runs in the admin area or loads no front-end assets may not appear. Hosting and CDN are inferred from response-header signatures, which are reliable when present. When a signal is missing, we report "Not detected" rather than guess. Our guides on [finding a site's plugins](https://themesniffer.com/blog/how-to-find-wordpress-plugins) and [finding its theme](https://themesniffer.com/blog/how-to-find-wordpress-theme) cover the manual signals, and where they run out. **Are the speed numbers the same as PageSpeed Insights?** No. We measure server response time (TTFB) from our server and analyse the HTML page weight and request count. It is a fast lab snapshot, not the visitor's own Core Web Vitals. For a full lab audit, run [Google PageSpeed Insights](https://pagespeed.web.dev/) alongside this report. **Can I check a site that isn't WordPress?** You can. The hosting, CDN, and speed sections work on any website. Theme and plugin detection are WordPress-specific, so those sections stay empty on non-WordPress sites. To simply confirm the platform, try our [Is It WordPress? checker](https://themesniffer.com/tools/is-it-wordpress/). **Is it legal to check another site's tech stack?** Yes. The tool only reads publicly served HTML and HTTP response headers, the same data your browser receives when you visit the page. It does not log in, scan private areas, or attempt access to anything that is not already public. **How is this different from your Chrome extension?** They cover different depths. This report gives you the broad stack in one place: theme, plugins, hosting, CDN, and speed, ready as a PDF. The [Chrome extension](https://chromewebstore.google.com/detail/wordpress-theme-detector/jmfelpjpndlbhbpffecppfhnfjkamiaa?utm_source=tech_stack_tool&utm_medium=website&utm_campaign=faq_link) shows less of that infrastructure side, but it goes much deeper on the WordPress theme and plugins themselves. Its in-browser detection reads the live rendered page and uses a smarter matching engine, so it identifies themes, child themes, and plugins (with versions) that a server-side scan can miss. Use the report for a full audit; use the extension for the richest theme and plugin detail as you browse. ## Guides that go with this report The manual methods behind every layer of the report, and what to do with the findings. #### Read the method - [How to check a WordPress site tech stack](https://themesniffer.com/blog/how-to-check-wordpress-tech-stack) - Theme, plugins, hosting, CDN and speed - all five layers in one pass. - [The complete guide to WordPress competitive analysis](https://themesniffer.com/blog/wordpress-competitive-analysis) - Turn theme and plugin detection into a comparison sheet and a plan you can act on. - [How to find what theme any WordPress site uses](https://themesniffer.com/blog/how-to-find-wordpress-theme) - Three methods, from a two-second extension click to reading style.css by hand. - [How to find what plugins a WordPress site uses](https://themesniffer.com/blog/how-to-find-wordpress-plugins) - Read the plugin stack off the front end, and learn what the front end still hides. #### More free tools - [Is It WordPress? Checker](https://themesniffer.com/tools/is-it-wordpress/) - Confirm the platform in one paste before you spend time digging deeper. - [Font Detector](https://themesniffer.com/tools/wordpress-font-detector/) - Every font family a page loads, with weights, sources and where each one is used. - [Color Palette Extractor](https://themesniffer.com/tools/wordpress-color-palette/) - Pull the real color palette out of a site stylesheet, hex codes included. ## See how any WordPress site is really built Paste a URL to run the full report, then add the free extension to spot themes and plugins on every site you visit. [Run a free report](https://themesniffer.com/tools/wordpress-tech-stack/#ts-form) [Or add the free Chrome extension](https://chromewebstore.google.com/detail/wordpress-theme-detector/jmfelpjpndlbhbpffecppfhnfjkamiaa?utm_source=tech_stack_tool&utm_medium=website&utm_campaign=bottom_cta), rated 5.0/5 on the Chrome Web Store.