Crypto Converter ⚡ Widget is a WordPress plugin that provides a real-time crypto and fiat currency converter with support for thousands of cryptocurrencies and multiple fiat currencies. It works without requiring an API key and includes features like caching, Gutenberg support, and customizable display options.
Official website: https://co-w.io/
Plugin page: https://wordpress.org/plugins/crypto-converter-widget/

Where This Plugin Delivers the Most Value
Crypto Converter Widget is useful for crypto blogs, fintech sites, and online stores that need to show crypto-to-fiat values directly on the page. It provides a Gutenberg block that works as a cryptocurrency converter or exchange-rate display, covering thousands of assets and fiat currencies. Real-time price updates and fallback across multiple data providers ensure users see актуальные данные without leaving the site. Its no-API-key setup and customization options make it easy to integrate without building a custom solution.
⭐️ FEATURES ⭐️

🔑 No API key needed;
🥞 Four layers of API data providers;
🪶 Pure JavaScript ≈80kB, no dependencies;
⚙️ Flexible settings;
⚡ Real-time price update;
🌐 Processed on a third-party server;
💅 Beautiful design;
🌈 Supports background gradient;
🌑 Supports dark theme;
📟 Gutenberg block support;
💵 Fiat, Tokens, Blockchains, Commodity;
₿ ≈3,313 cryptocurrencies and ≈170 fiat currencies;
💱 Can be used as Exchange Rates or Currency Converter;
🦠 No Cryptojacking!
🔐 SSL support;
🩷 SEO-friendly;
🆓 Free.