# leeoniya/uFuzzy

A tiny, efficient fuzzy search that doesn't suck

Repository: https://github.com/leeoniya/uFuzzy
Canonical: https://ross.abutalabs.com/products/ufuzzy
Language: JavaScript
License: MIT
License Family: permissive
Topics: autocomplete, filter-list, fuzzy-matching, fuzzy-search, ranking-algorithm, typeahead, typeahead-search, search
Last push: 2025-10-31T17:43:24+00:00

## Health v2 (maintenance only)
Score: 53/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 49, release rhythm 32, longevity 100
- inputs: {"age_days": 1447, "days_push": 306, "days_rel": 376, "gap_med": 42, "n_releases_24m": 4}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3025, forks 57 (observed 2026-08-28T04:07:38.647695+00:00)

## What it is
uFuzzy is a tiny (~7.5KB), zero-dependency JavaScript fuzzy search library for matching a short needle phrase against large lists of short-to-medium haystack strings. It supports out-of-order term matching, typo tolerance, substring exclusions, and exact terms, with no index to build and fast, low-memory searching.

## Use cases
- filter a large list as the user types
- add autocomplete or typeahead suggestions to a search box
- fuzzy search filenames, titles, or function names
- tolerate single typos in user search queries
- search with out-of-order terms like 'spac ca'
- exclude substrings from search results like 'fruit -green'

## When to choose
- you need fast client-side fuzzy filtering of in-memory string lists
- you want predictable, explainable ranking instead of a black-box relevance score
- startup time and memory footprint matter and building a search index is overkill
- you want a tiny dependency-free library for autocomplete or list filtering

## When to avoid
- you need full-text search over large document collections with relevance scoring
- you need Unicode/CJK-heavy text matching out of the box
- you need a server-side search engine with indexing, stemming, or faceting

## Facets
- artifact type: library
- maturity: active
- function: search-engine, parser
- domain: web-development, developer-tools, frontend
- platform: browser, cross-platform
- tags: fuzzy-search, autocomplete, typeahead, list-filtering, zero-dependency, string-matching, search, javascript, nodejs

## Member repositories
- leeoniya/uFuzzy (main) score 53

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:38.647695+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:29:54.142014+00:00, confidence not recorded.
  - readme: https://github.com/leeoniya/uFuzzy (fetched 2026-08-28T04:07:38.647695+00:00, sha a940d60215d4)
- Data as of 2026-08-30T08:39:29.467469+00:00.