12 major music genres with BPM ranges, instruments, characteristics, and subgenres.

Search Reddit posts and subreddits, find users, and combine multi-reddits.

Guide to Google Core Web Vitals: LCP, FID, CLS, and the new INP metric.

Guide to database optimization: indexing, query caching, and read replicas.

Extract data from Excel spreadsheets as structured JSON

Calculate rail infrastructure maintenance cycle requirements

Database Concepts data API — search, random, bulk endpoints.

Guide to webhooks: HMAC signature verification, retry logic, and idempotency.

Decode and validate JWT tokens — header, payload, and expiry.

Real-time and historical earthquake data from USGS including magnitude, location, depth.

15 meteorology terms from CAPE to Jet Stream — with thresholds, examples, and science.

Geocode addresses, reverse geocode coordinates, search places, and find nearby locations.

All 5 oceans with area, average depth, maximum depth trenches, and volume.

Detect feature distribution drift between training and production data using PSI-based scoring.

Solar system planet facts, star data, NASA Astronomy Picture of the Day.

Scrape Google web search results, news, images, shopping, and autocomplete suggestions.

15 common English idioms with meanings, surprising historical origins, and example sentences.

Calculate ROI, annualized ROI, marketing ROAS, and LTV:CAC ratio.

12 major rivers with length, discharge, countries, source, and mouth.

Solar system planets, stars, distances, and comparative planet data — no API key needed.