MarkItHigh-Performance Text Highlighting

As fast as Chrome's Find in Page. Zero DOM mutations by default. Framework-safe.

Dual Engine Architecture

CSS Custom Highlight API for zero DOM mutations, with Range-based DOM wrapping as a fallback. Automatic feature detection picks the best strategy.

Designed from the ground up for Angular, React, and Next.js. No innerHTML, no broken bindings, no hydration mismatches.

TreeWalker indexing, binary search offset mapping, incremental search, idle callback batching. Handles 100K+ nodes.

Keywords, regex, ranges, diacritics, synonyms, wildcards, accuracy modes, across-elements search, exclude selectors, and more.

Extensible via beforeSearch, afterMatch, beforeRender, and afterRender hooks. Build fuzzy search, analytics, or custom filters.

TypeScript-first. ESM + CJS bundles. Tree-shakable. SSR compatible. Thoroughly tested. Published as scoped npm packages.