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placeholders.dev

placeholders.dev

live Unverified (seed import) Developer Tools 2 tools imperative implementation
Open website How verification works

Generate fast placeholder images from a URL, powered by Cloudflare Workers in 333+ edge locations.

First seen 2026-08-31 · Last seen 2026-08-31 · Source: webmcp.com

Answer 1 · Act 1 · Transact 0 · Score: Not yet scored

Tool inspector

explain_placeholder_image_url

answer imperative

Break an existing placeholders.dev URL into the options it actually uses, filling in the defaults the image API would apply and listing any query parameters it ignores. Useful before editing placeholder URLs already in a codebase.

Input schema

PropertyTypeRequiredDescription
url string yes An absolute placeholders.dev image URL, e.g. `https://images.placeholders.dev/?width=350&text=Hello`.
Raw JSON schema 
{
  "type": "object",
  "properties": {
    "url": {
      "type": "string",
      "description": "An absolute placeholders.dev image URL, e.g. `https://images.placeholders.dev/?width=350&text=Hello`.",
      "minLength": 1
    }
  },
  "required": [
    "url"
  ]
}

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