# Vextorium Page Images Audit

> Vextorium Page Images Audit is a paid API for AI agents from api.vextorium.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-11).

Crawls a webpage and returns detailed metadata for every image found, including URL, alt text, dimensions, lazy loading status, and format, plus counts of missing alt text and non-modern formats for accessibility and SEO auditing.

## Facts

- Endpoint: POST https://api.vextorium.com/v1/page-images?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vextorium-page-images-audit-f15c3ccb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_q-NP5FB5lTmvtZpSzz3Vo

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability vextorium-page-images-audit-f15c3ccb -d '<json body>'
```

Example prompt: Can you audit all the images on https://example.com and tell me how many are missing alt text, which formats are used, and flag any accessibility or SEO warnings?

## When to prefer this

Choose this endpoint when you need a structured, per-image breakdown of all images on a specific webpage for accessibility audits (WCAG alt text compliance), SEO image optimization reviews (format modernization), or frontend quality checks. It is purpose-built for image-specific page audits rather than general page scraping, and returns pre-computed counts and warnings, saving downstream processing steps.

## Known failure modes

- Invalid or unreachable URL returns an error with no image data
- Page with bot protection or CAPTCHA may return empty or partial results
- Very large pages may be truncated if limit parameter is not set
- Pages requiring authentication will not return protected image assets
- Malformed URL in input body causes validation error

## How this service works

Images on a page with URL, alt text, declared size, lazy loading and format, counting images without alt text and flagging missing modern formats. For accessibility and SEO audits.

## Output

Returns a JSON object containing: total image count, per-image detail array (URL, alt text, width, height, format, lazy flag, missing_alt flag), format breakdown by type (png, svg, webp, etc.), count of images missing alt text, count of images without dimensions, count of lazy-loaded images, the final resolved URL of the page, and an array of human-readable warning strings highlighting accessibility or SEO issues.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "required": [
      "url"
     ],
     "properties": {
      "url": {
       "type": "string"
      },
      "limit": {
       "type": "integer"
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": [
      "object",
      "null"
     ],
     "properties": {
      "lazy": {
       "type": [
        "number",
        "null"
       ]
      },
      "detail": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": [
         "null",
         "object"
        ],
        "properties": {
         "alt": {
          "type": [
           "null",
           "string"
          ]
         },
         "url": {
          "type": [
           "null",
           "string"
          ]
         },
         "high": {
          "type": [
           "null",
           "string"
          ]
         },
         "lazy": {
          "type": [
           "boolean",
           "null"
          ]
         },
         "width": {
          "type": [
           "null",
           "string"
          ]
         },
         "format": {
          "type": [
           "null",
           "string"
          ]
         },
         "missing_alt": {
          "type": [
           "boolean",
           "null"
          ]
         }
        }
       }
      },
      "images": {
       "type": [
        "number",
        "null"
       ]
      },
      "formats": {
       "type": [
        "object",
        "null"
       ],
       "properties": {
        "png": {
         "type": [
          "number",
          "null"
         ]
        },
        "svg": {
         "type": [
          "number",
          "null"
         ]
        },
        "webp": {
         "type": [
          "number",
          "null"
         ]
        }
       }
      },
      "warnings": {
   
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "lazy": 0,
  "detail": [
   {
    "alt": "",
    "url": "https://wordpress.org/files/2026/06/WCUS-2026.png",
    "high": "1046",
    "lazy": false,
    "width": "1000",
    "format": "png",
    "missing_alt": true
   },
   {
    "alt": "",
    "url": "https://wordpress.org/files/2024/04/brush.png",
    "high": "323",
    "lazy": false,
    "width": "1198",
    "format": "png",
    "missing_alt": true
   }
  ],
  "images": 18,
  "formats": {
   "png": 16,
   "svg": 1,
   "webp": 1
  },
  "warnings": [
   "9 images without alt text (accessibility and SEO)."
  ],
  "url_final": "https://wordpress.org/",
  "missing_alt": 9,
  "without_dimensions": 0
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vextorium-page-images-audit-f15c3ccb/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.vextorium.com](https://www.zero.xyz/host/api.vextorium.com/llms.txt)