Power On Labs

Small, reliable web utilities. Each Actor does one job properly: sane defaults, predictable output, and no surprises in the bill.

Tech Stack Audit  — detect a website's technology stack with a real browser, not by guessing from HTML. ~280 technologies with version and age, which trackers actually fire, security headers, cookies set before consent — with the evidence.

PDF to JSON Extractor  — turn any PDF into structured JSON. Tables as real rows and columns, headings and paragraphs in reading order, metadata, form fields and key fields: invoice number, dates, totals, IBAN, VAT. Markdown output for RAG.

Website Screenshot & PDF Generator API  — capture any web page as PNG, JPEG, WebP or PDF. Full-page, viewport or element screenshots. Cookie banners removed, ads blocked, lazy images loaded. Retina scale, dark mode, batch URLs.

Sitemap URL Extractor  — every page URL a site lists in its sitemaps. Reads robots.txt, follows sitemap-index files, unpacks gzip, filters by URL pattern or date. One row per URL, ready to feed a crawler.

• Pay per use. No subscription, no start fee. Failed inputs are never charged.
• Predictable output. One row per input, a direct file link, and a clear error when something fails. One broken input never kills the run.
• Built for pipelines. Structured JSON, usable from the API, the Node.js and Python clients, or Make, n8n and Zapier.
• Maintained. Issues and reviews get answered. If an option you need is missing, open an issue and ask.

Website technology and privacy audits · document data extraction · PDF to JSON, tables and structure · sitemap parsing and URL lists · page rendering and screenshots · webpage-to-PDF export · output for AI agents.