Ironfang · Schema
SitePreviewRequest
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Properties
| Name | Type | Description |
|---|---|---|
| no_cache | boolean | Force a fresh recording instead of using a cached result. |
| block_ads | boolean | Drop requests to known ad and tracker networks before they load. Stopped as network requests rather than hidden afterwards, so the page never spends time fetching them. |
| block_cookie_banners | boolean | Hide common consent banners, and undo the scroll lock they set - without which a full-page capture is one viewport tall. Hidden, not accepted. Clicking "accept" would be a decision made on the site ow |
| hide_selectors | array | CSS selectors to hide before capturing. Applied after load, so elements injected by script are covered. |
| headers | object | Extra HTTP headers sent with every request for the page. |
| cookies | array | Cookies to set before navigating. Set beforehand because a session cookie that arrives after load has missed the request it was meant to authenticate. |
| authorization | string | Sets the `Authorization` header - the common case, spelled once. An explicit `Authorization` in `headers` wins over this. |
| user_agent | string | Overrides the user agent, including any set by `device`. |
| wait_until | string | When the page counts as ready. `networkidle` waits for traffic to stop and is bounded by the render timeout, because a page with polling never truly idles. |
| wait_for_selector | string | Wait for this element before capturing. Fails the render if it never appears, rather than returning a half-drawn page. |
| timeout_ms | integer | Per-render timeout. Clamped to the service maximum - it can lower the ceiling but not raise it. |
| device_scale_factor | number | Pixel density. 2 is retina: the same CSS size at twice the pixels. |
| url | string | Public HTTP or HTTPS page to record. |
| width | integer | Output and browser viewport width in pixels. |
| height | integer | Output and browser viewport height in pixels. Width multiplied by height cannot exceed 1,200,000 pixels. |
| motion | string | `per_page` moves one viewport at a time with eased transitions and a 750ms reading pause. `single_sweep` makes one continuous eased pass from top to bottom. |
| dark_mode | boolean | Record with `prefers-color-scheme: dark`. |
| device | string | Use a full device preset. Explicit width and height still win. |
| delay_ms | integer | Extra settle time after page load and before lazy-content preloading. Capped at ten seconds. |
JSON Schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"$id": "https://raw.githubusercontent.com/api-evangelist/ironfang/main/json-schema/ironfang-site-preview-request-schema.json",
"title": "SitePreviewRequest",
"x-generated": "2026-09-28",
"x-method": "derived",
"x-generator": "derive-json-schema.py",
"x-source": "openapi/ironfang-render-api-openapi.yml#/components/schemas/SitePreviewRequest",
"allOf": [
{
"$ref": "#/$defs/RenderCommon"
},
{
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string",
"format": "uri",
"description": "Public HTTP or HTTPS page to record."
},
"width": {
"type": "integer",
"default": 672,
"minimum": 320,
"maximum": 1280,
"multipleOf": 2,
"description": "Output and browser viewport width in pixels."
},
"height": {
"type": "integer",
"default": 494,
"minimum": 240,
"maximum": 1200,
"multipleOf": 2,
"description": "Output and browser viewport height in pixels. Width multiplied\nby height cannot exceed 1,200,000 pixels.\n"
},
"motion": {
"type": "string",
"enum": [
"per_page",
"single_sweep"
],
"default": "per_page",
"description": "`per_page` moves one viewport at a time with eased transitions\nand a 750ms reading pause. `single_sweep` makes one\ncontinuous eased pass from top to bottom.\n"
},
"dark_mode": {
"type": "boolean",
"default": false,
"description": "Record with `prefers-color-scheme: dark`."
},
"device": {
"type": "string",
"enum": [
"desktop",
"tablet",
"mobile"
],
"description": "Use a full device preset. Explicit width and height still win.\n"
},
"delay_ms": {
"type": "integer",
"minimum": 0,
"maximum": 10000,
"description": "Extra settle time after page load and before lazy-content preloading. Capped at ten seconds."
},
"no_cache": {
"type": "boolean",
"default": false,
"description": "Force a fresh recording instead of using a cached result."
}
}
}
],
"$defs": {
"Cookie": {
"type": "object",
"required": [
"name",
"domain"
],
"properties": {
"name": {
"type": "string"
},
"value": {
"type": "string"
},
"domain": {
"type": "string",
"description": "Required. Chromium silently drops a domainless cookie set before\nnavigation, so the render would quietly come back logged out.\n"
},
"path": {
"type": "string",
"default": "/"
}
}
},
"RenderCommon": {
"type": "object",
"properties": {
"no_cache": {
"type": "boolean",
"default": false,
"description": "Force a fresh render instead of serving a cached one. Always\nbillable. Excluded from the cache key, so repeated fresh requests\ndo not collide.\n"
},
"block_ads": {
"type": "boolean",
"default": false,
"description": "Drop requests to known ad and tracker networks before they load.\nStopped as network requests rather than hidden afterwards, so the\npage never spends time fetching them.\n"
},
"block_cookie_banners": {
"type": "boolean",
"default": false,
"description": "Hide common consent banners, and undo the scroll lock they set -\nwithout which a full-page capture is one viewport tall.\n\nHidden, not accepted. Clicking \"accept\" would be a decision made\non the site owner's behalf and recorded as theirs.\n"
},
"hide_selectors": {
"type": "array",
"items": {
"type": "string"
},
"description": "CSS selectors to hide before capturing. Applied after load, so\nelements injected by script are covered.\n"
},
"headers": {
"type": "object",
"additionalProperties": {
"type": "string"
},
"description": "Extra HTTP headers sent with every request for the page."
},
"cookies": {
"type": "array",
"items": {
"$ref": "#/$defs/Cookie"
},
"description": "Cookies to set before navigating. Set beforehand because a session\ncookie that arrives after load has missed the request it was meant\nto authenticate.\n"
},
"authorization": {
"type": "string",
"description": "Sets the `Authorization` header - the common case, spelled once.\nAn explicit `Authorization` in `headers` wins over this.\n"
},
"user_agent": {
"type": "string",
"description": "Overrides the user agent, including any set by `device`.\n"
},
"wait_until": {
"type": "string",
"enum": [
"load",
"domcontentloaded",
"networkidle"
],
"default": "load",
"description": "When the page counts as ready. `networkidle` waits for traffic to\nstop and is bounded by the render timeout, because a page with\npolling never truly idles.\n"
},
"wait_for_selector": {
"type": "string",
"description": "Wait for this element before capturing. Fails the render if it\nnever appears, rather than returning a half-drawn page.\n"
},
"timeout_ms": {
"type": "integer",
"description": "Per-render timeout. Clamped to the service maximum - it can lower\nthe ceiling but not raise it.\n"
},
"device_scale_factor": {
"type": "number",
"minimum": 1,
"maximum": 3,
"description": "Pixel density. 2 is retina: the same CSS size at twice the pixels.\n"
}
}
}
}
}
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