APITemplate.io vs Unsplash

APITemplate.io lets teams design reusable HTML or drag-and-drop templates in a browser editor, then render them into images or PDFs on demand through a REST call, Zapier, Make, or n8n. Requests send JSON overrides for named text, image, and color elements (with Jinja2 available for PDF templating) and get back a hosted download URL for the generated PNG or PDF. A free plan covers 50 image/PDF renders and 3 templates a month, with paid PDF and image plans scaling to tens of thousands of documents.

Unsplash's JSON API lets apps search, browse, and download from its library of freely licensed photos, returning dynamically resizable image URLs (powered by Imgix) alongside photographer and collection metadata. Nearly all real use is covered by a static Client-ID access key sent via the Authorization header — full OAuth is only needed for a handful of actions performed on a user's behalf, like liking a photo. New applications start in demo mode at 50 requests/hour and can apply for production approval to reach 1,000/hour, with attribution to the photographer and Unsplash required under the Unsplash API Guidelines.