ThemeSniffer

By Ruslan Saifullin

Overview

Find out which WordPress theme and plugins any website uses, right from the conversation. ThemeSniffer checks whether a site runs WordPress, names the active theme (and the parent theme when a child theme is used), says whether it is free on WordPress.org, premium or custom, and flags outdated versions. It lists the plugins it can see, grouped into page builders, e-commerce, SEO, forms, caching and more, notes when the design comes from a page builder rather than the theme, and compares several sites side by side with hosting, CDN and a speed snapshot. When a site blocks the check, ThemeSniffer says who blocked it instead of guessing. Only plugins that leave traces on a site's public pages can be detected; backend-only plugins stay invisible to any outside scanner. No account or API key is needed. The website address you ask about is sent to themesniffer.com, which fetches that public page and returns what it detected.

Tools

check_if_wordpress

ChatGPT

Check whether a website is built with WordPress. Returns a yes/no verdict, a confidence level, which of the eight detection signals matched, and the active theme when one is identifiable.

detect_website_fonts

ChatGPT

List every font a website uses: families with weights and styles, the provider each comes from (Google Fonts, Bunny, Fontshare, Adobe kits, self-hosted @font-face), system font stacks, WordPress theme.json font presets, and the CSS type scale. Works on non-WordPress sites too.

extract_color_palette

ChatGPT

Extract a website's color palette from its CSS: every color with hex, rgb and hsl, which color plays which role (background, text, primary, accent, border), the WordPress theme.json palette, gradients, and WCAG contrast pairs. Works on non-WordPress sites too.

get_wordpress_tech_stack

ChatGPT

Get the full tech stack behind a website: WordPress theme, active plugins, hosting provider, CDN, web server, security headers, and page speed measurements. The broadest of these tools — prefer it when the question is open-ended ("what is this site built with?").