SERP Checker Tool

Purpose & User Intent: This tool is a UK-focused SERP checker designed to analyze search engine results pages for government and healthcare queries, notably HMRC and NHS related terms. Target users include SEO professionals, public sector digital teams, communications managers, and content strategists who need to benchmark rankings and optimize content for UK searches. When to use: during campaign planning, after publishing content, or for quarterly performance reviews to understand visibility shifts.
Core Logic & Features: The system performs domain-aware SERP analysis by querying public UK SERP data for a given keyword and region, evaluating ranking position, result domain alignment, and the presence of SERP features (snippets, images, local packs). Required features include: input validation, keyword and domain specification, region and device selection, result_limit, and a structured ranking output. Optional/advanced features include historical snapshots, trend analysis, competitor benchmarking, and exportable reports.
Inputs & Outputs: Inputs are: keyword (string, example HMRC tax credits), domain (string, example example.gov.uk), region (string, default UK), device_type (string, desktop/mobile, optional), results_limit (int, 5–50, default 10). Outputs include ranking_list (array of entries with rank, domain, url, title, snippet, has_snippet, is_ad), overall_score (0–100), and flag indicators for SERP features.
Algorithms & Calculations: Ranking position is derived from SERP results and mapped to rank value; volatility is measured via delta between snapshots; compute feature_presence_score by counting SERP features (featured snippet, knowledge panel, local pack); compare against competitors to identify optimization opportunities.
Error & Edge Cases: Missing required inputs triggers validation errors; invalid domain formats are rejected; region/device not supported yields fallback defaults; external data unavailability or rate limits produce safe-null outputs with explicit flags; user-provided results_limit beyond allowed ranges is sanitized.
Industry/Region & Localization: Applies UK English conventions, uses Google UK as primary data source; no currency conversion; content guidance reflects HMRC and NHS audience considerations.
Assumptions & Exclusions: Assumes queries target UK public sector and healthcare audiences; excludes paid SERP results; not a real-time live management tool; data retention policies apply to stored snapshots.