Web & APIVerified provider
URL Parser
Pass an absolute URL in the url query parameter.
Updated 5 hours ago
Web & API APIs
Web-facing utility APIs for parsing, formatting and lookup workflows.
Available Web & API APIs
Web & APIVerified provider
HTML Formatter
Best-effort indentation; not a full HTML5 parser.
Updated 5 hours ago
Web & APIVerified provider
CSS Formatter
Pass CSS in the css query parameter.
Updated 5 hours ago
Web & APIVerified provider
IP Address Lookup
Requires IP_LOOKUP_URL env for live enrichment; otherwise returns structural parse only.
Updated 5 hours ago
Web & APIVerified provider
WHOIS Lookup
Requires WHOIS_LOOKUP_URL env. Never exposes upstream secrets.
Updated 5 hours ago
How do Web & API APIs work?
Most web & api APIs use authenticated HTTPS requests (typically API keys or OAuth), accept structured parameters, and return JSON or other documented formats. Always verify base URL, versioning, error codes and rate limits in the provider documentation before production use.
How to choose the right Web & API API
Start from your use case, then shortlist APIs that clearly document inputs, outputs, authentication and limits. Prefer services with current docs, transparent pricing and support channels. Pricing, coverage and limits can change — confirm against the latest provider documentation.
What should you compare
| API | Free tier | Rate limit | Auth | API host |
|---|---|---|---|---|
| URL Parser | Yes | 60 req/min | API key | urlparser.apiseeker.com |
| HTML Formatter | Yes | 30 req/min | API key | htmlfmt.apiseeker.com |
| CSS Formatter | Yes | 30 req/min | API key | cssfmt.apiseeker.com |
| IP Address Lookup | Yes | 20 req/min | API key | iplookup.apiseeker.com |
| WHOIS Lookup | Yes | 10 req/min | API key | whois.apiseeker.com |
API integration considerations
Plan for authentication storage, retries with backoff, idempotency where needed, and monitoring of quotas. Use sandbox or free tiers when available, then graduate to paid plans with clear overage rules.