Placeholder.photo turns placeholder images into stable URLs

Field notes

The service organizes seven output types behind a shared URL-oriented system: users select a module, size, style, and optional seed, then copy the resulting URL or integration snippet. Its documented examples include a 1200×630 image endpoint and an HTML img element, while the homepage says hotlinking is supported. The site also describes stable seeds, immutable derivatives, locally stored curated-photo masters, and support for basic historical routes.