A static website with a dynamic search function? Yes. As alternatives to embeddable scripts from Google or other search engines, you can provide your visitors a custom search by indexing your content files directly.
GitHub Gist for Hugo Workflow. This gist contains a simple workflow to create a search index for your static website. It uses a simple Grunt script to index all your content files and lunr.js to serve the search results.
hugo-lunr. A simple way to add site search to your static Hugo site using lunr.js. Hugo-lunr will create an index file of any html and markdown documents in your Hugo project.
hugo-lunr-zh. A bit like Hugo-lunr, but Hugo-lunr-zh can help you separate the Chinese keywords.
Github Gist for Fuse.js integration. This gist demonstrates how to leverage Hugo’s existing build time processing to generate a searchable JSON index used by Fuse.js on the client side. Although this gist uses Fuse.js for fuzzy matching, any client side search tool capable of reading JSON indexes will work. Does not require npm, grunt or other build-time tools except Hugo!
hugo-search-index. A library containing Gulp tasks and a prebuilt browser script that implements search. Gulp generates a search index from project markdown files.
Commercial Search Services
Algolia’s Search API makes it easy to deliver a great search experience in your apps and websites. Algolia Search provides hosted full-text, numerical, faceted, and geolocalized search.