The best screenshot, PDF & markdown API in 2026

Most teams start needing one thing — a screenshot API, an HTML-to-PDF API, or a URL-to-markdown extractor for an LLM — and end up stitching together three vendors, three bills, and three auth schemes. This guide maps the 2026 landscape and shows how to collapse it onto one key.

What to evaluate

Beyond raw fidelity, the things that actually bite later: per-primitive pricing (paying separately for screenshots, PDFs, and scrapes), request ergonomics (JSON body vs 100+ query params), agent support (an MCP server and structured errors), and caching (do identical renders cost full price every time).

Screenshot APIs

ScreenshotOne, Urlbox, CaptureKit, and ApiFlash dominate here. They're solid at captures — full page, element, device emulation, ad-blocking. The gap: most are screenshot-only, so PDF and markdown mean a second vendor. See RenderKit vs ScreenshotOne and vs Urlbox.

HTML-to-PDF APIs

PDFShift, ConvertAPI, and the document suites (Nutrient, DocRaptor) own PDF. Quality is good; what varies is whether you get real Chromium print CSS, component-native rendering (JSX-to-PDF), and whether screenshots come along. See RenderKit vs PDFShift and vs ConvertAPI.

URL-to-markdown for LLMs

The newest category: Firecrawl, Jina Reader, and open tools like supermemory's markdowner turn pages into clean, LLM-ready markdown. Firecrawl excels at whole-site crawling; for single-URL precision with token-aware chunking, see RenderKit vs Firecrawl.

Or: all three on one key

RenderKit covers screenshot, PDF, and markdown behind one API key and one billing meter — from $9/mo, with an MCP server for agents, JSX-to-PDF, content-addressed caching, and US/GB geo rendering. If you're choosing today and don't want three vendors, that's the shortcut.

One key, three primitives, one bill. The simplest stack is the one you don't have to integrate three times.

Browse every head-to-head on the comparison hub, or start with the docs.