Font Hub Finder

Purpose & User Intent: This tool solves the problem of discovering free web fonts with clear licensing, enabling designers, developers, and procurement teams to build compliant typography for websites. It is used at project kickoff, typography audits, and asset pipelines to verify licenses, compare fonts, and assemble reusable font lists.
Core Logic & Features: Core capabilities include data aggregation from multiple font catalogs, normalization of licenses, and deduplication. It supports search and filters by style (serif, sans-serif, display), weight, language coverage, and license type. Required features are data aggregation, license normalization, search, results ranking, and export. Optional/advanced features include license risk scoring, per-font licensing notes, source links, CSS/font-face guidance, and bulk export.
Inputs & Outputs: Inputs include: search_query (string, optional, sample "geometric sans"), style (string, optional, sample "sans-serif"), license_filter (string, optional, sample "SIL OFL 1.1"), source_filter (string, optional, sample "Google Fonts"), max_results (integer, optional, sample 100, validation 1-1000), include_download_links (boolean, optional, sample true). Outputs include: fonts (array of {name:string, license:string, sources:array, preview_url:string|null, download_url:string|null, languages:array, weights:array}), total_count (integer), risk_score (number 0-100).
Algorithms & Calculations: Ranking uses final_score = 0.6 * relevance_score + 0.4 * license_score. relevance_score derives from term matches in name/style/language, license_score maps license types to risk (permissive licenses score higher), and results are deduplicated by canonical identity (name+style+weight). Licensing metadata is normalized to standard categories (e.g., OFL, MIT, Apache, CC variants).
Error & Edge Cases: If inputs are missing, the system performs a broad search. Ambiguous or disputed licenses are flagged as uncertain with a conservative risk_score. External data unavailability returns partial results with a partial_risk flag. Large result sets are capped by max_results, and updates to source catalogs may alter license status.
Industry/Region & Localization: Uses standard web font licensing norms and US/EU-style usage terms. License types are mapped to common regional interpretations; language/script coverage is surfaced where available. Localization primarily affects language support metadata and script filters.
Assumptions & Exclusions: Assumes indexed catalogs are authoritative at the time of retrieval. The tool does not host font files or grant licenses. It excludes private or non-indexed catalogs and cannot guarantee license validity beyond what source metadata conveys.