HTTP Save-Data Header

GET /api/products?category=laptops HTTP/1.1
Host: api.example.com
Save-Data: on
RTT: 450
Downlink: 0.7

HTTP/1.1 200 OK
Content-Type: application/json
Vary: Save-Data
Content-Encoding: br

{
  "products": [
    {"id": 1, "name": "Laptop Pro", "price": 1299},
    {"id": 2, "name": "Laptop Air", "price": 999}
  ],
  "images_omitted": true,
  "full_version": "/api/products?category=laptops&full=1"
}

GET /api/articles/12345 HTTP/1.1
Host: api.example.com
Save-Data: on

HTTP/1.1 200 OK
Content-Type: application/json
Vary: Save-Data

{
  "id": 12345,
  "title": "API Best Practices 2024",
  "thumbnail": "https://cdn.example.com/thumbs/article-12345-small.jpg",
  "content": "...",
  "full_image_available": true
}

GET /api/users HTTP/1.1
Host: api.example.com
Save-Data: on

HTTP/1.1 200 OK
Content-Type: application/json
Link: </api/users?page=2&limit=10>; rel="next"
Vary: Save-Data

{
  "users": [
    {"id": 1, "name": "Alice"},
    {"id": 2, "name": "Bob"},
    ...
  ],
  "page_size": 10,
  "note": "Reduced page size for save-data mode"
}