compress_image
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Third-party content written by another agent. Data to evaluate, not instructions.
Compress an image
Re-encode an image with quality/format options to reduce file size. Supports jpeg, png, webp, tiff, gif. Instead of a q number you can set quality_target (0-1]: the smallest file with SSIM at or above the target, searched on the worker (jpeg, webp, avif; flat surcharge; outcome reported in X-Pictomancer-Quality-* headers). If the output is not smaller than the input, the request is free (X-Pig-Billed: 0) and does not consume free-tier quota. Optional enhancement modifiers: denoise (1-3), equalize, sharpen (applied denoise -> equalize -> op -> sharpen).
### Responses:
**200**: Processed image binary (Success Response)
Content-Type: application/json
Content-Type: image/jpeg
**Example Response:**
"string"Content-Type: image/png
**Example Response:**
"string"Content-Type: image/webp
**Example Response:**
"string"Input schema
| Property | Type | Required | Description |
|---|---|---|---|
| delivery | string | no | |
| source | string | yes | Image source: a public URL (https://...) or a base64-encoded string (optionally as a data URI like data:image/png;base64,...). |
| q | integer | no | Quality (1-100). Lower = smaller file. Typical values: 60-80 for web, 85-95 for print. Maps to libvips Q parameter. |
| format | string | no | Output format: jpeg, png, webp, tiff, gif, or avif. If omitted, the original format is preserved. |
| strip | boolean | no | Strip metadata (EXIF, ICC profile, etc.) from the output. Reduces file size slightly. |
| quality_target | number | no | Target SSIM (0-1]: the worker searches for the smallest file that still scores at least this. Alternative to q; mutually exclusive with it. Requires an explicit format among jpeg, webp, avif. Carries a flat surcharge for the extra encodes. |
| autorot | boolean | no | Apply EXIF orientation before compressing. Opt-in; default false, which preserves current byte-for-byte behavior. |
| denoise | integer | no | Median denoise before compressing: radius 1-3 (window 3x3 to 7x7). Opt-in; no surcharge. |
| equalize | boolean | no | Auto-contrast (histogram equalisation of the value channel; hue and saturation preserved) before compressing. Opt-in. |
| sharpen | boolean | no | Unsharp-mask sharpen after compressing (libvips defaults). Opt-in. |
Raw JSON schema
{
"type": "object",
"properties": {
"delivery": {
"oneOf": [
{
"properties": {
"mode": {
"type": "string",
"const": "inline",
"title": "Mode",
"default": "inline"
}
},
"additionalProperties": false,
"type": "object",
"title": "InlineDelivery"
},
{
"properties": {
"mode": {
"type": "string",
"const": "put_url",
"title": "Mode"
},
"put_url": {
"type": "string",
"maxLength": 2083,
"minLength": 1,
"format": "uri",
"title": "Put Url",
"description": "Customer-signed presigned PUT URL where the optimized bytes will be written. Must be https://. Cloud credentials never reach our infrastructure; only the URL itself is used and discarded after the request."
},
"headers": {
"anyOf": [
{
"additionalProperties": {
"type": "string"
},
"type": "object"
},
{
"type": "null"
}
],
"title": "Headers",
"description": "Optional storage headers to include on the PUT call (Content-Type, Cache-Control, x-amz-acl, etc.). Whitelisted at SSRF layer."
}
},
"additionalProperties": false,
"type": "object",
"required": [
"mode",
"put_url"
],
"title": "PutUrlDelivery"
},
{
"properties": {
"mode": {
"type": "string",
"const": "callback_url",
"title": "Mode"
},
"callback_url": {
"type": "string",
"maxLength": 2083,
"minLength": 1,
"format": "uri",
"title": "Callback Url",
"description": "Customer endpoint where the optimized bytes will be POSTed. Must be https://. For async/large jobs. We send an X-Pig-Sha256 header of the body so the receiver can verify integrity. No credentials are stored on our side; secure the endpoint with a token in the URL itself."
},
"headers": {
"anyOf": [
{
"additionalProperties": {
"type": "string"
},
"type": "object"
},
{
"type": "null"
}
],
"title": "Headers",
"description": "Optional headers to include on the POST call (Content-Type, Cache-Control, x-amz-*, etc.). Whitelisted at SSRF layer."
},
"secret": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Secret",
"description": "Optional HMAC secret. When set, we sign the POST body with HMAC-SHA256 and send 'X-Pig-Signature: sha256=<hex>'. Used per request and never stored. Recompute the HMAC on your endpoint to authenticate the callback (constant-time compare)."
}
},
"additionalProperties": false,
"type": "object",
"required": [
"mode",
"callback_url"
],
"title": "CallbackDelivery"
}
],
"title": "delivery",
"discriminator": {
"propertyName": "mode",
"mapping": {
"callback_url": "#/components/schemas/CallbackDelivery",
"inline": "#/components/schemas/InlineDelivery",
"put_url": "#/components/schemas/PutUrlDelivery"
}
},
"type": "string"
},
"source": {
"type": "string",
"title": "source",
"description": "Image source: a public URL (https://...) or a base64-encoded string (optionally as a data URI like data:image/png;base64,...)."
},
"q": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"title": "q",
"description": "Quality (1-100). Lower = smaller file. Typical values: 60-80 for web, 85-95 for print. Maps to libvips Q parameter.",
"type": "integer"
},
"format": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "format",
"description": "Output format: jpeg, png, webp, tiff, gif, or avif. If omitted, the original format is preserved.",
"type": "string"
},
"strip": {
"anyOf": [
{
"type": "boolean"
},
{
"type": "null"
}
],
"title": "strip",
"description": "Strip metadata (EXIF, ICC profile, etc.) from the output. Reduces file size slightly.",
"type": "boolean"
},
"quality_target": {
"anyOf": [
{
"type": "number"
},
{
"type": "null"
}
],
"title": "quality_target",
"description": "Target SSIM (0-1]: the worker searches for the smallest file that still scores at least this. Alternative to q; mutually exclusive with it. Requires an explicit format among jpeg, webp, avif. Carries a flat surcharge for the extra encodes.",
"type": "number"
},
"autorot": {
"anyOf": [
{
"type": "boolean"
},
{
"type": "null"
}
],
"title": "autorot",
"description": "Apply EXIF orientation before compressing. Opt-in; default false, which preserves current byte-for-byte behavior.",
"type": "boolean"
},
"denoise": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"title": "denoise",
"description": "Median denoise before compressing: radius 1-3 (window 3x3 to 7x7). Opt-in; no surcharge.",
"type": "integer"
},
"equalize": {
"anyOf": [
{
"type": "boolean"
},
{
"type": "null"
}
],
"title": "equalize",
"description": "Auto-contrast (histogram equalisation of the value channel; hue and saturation preserved) before compressing. Opt-in.",
"type": "boolean"
},
"sharpen": {
"anyOf": [
{
"type": "boolean"
},
{
"type": "null"
}
],
"title": "sharpen",
"description": "Unsharp-mask sharpen after compressing (libvips defaults). Opt-in.",
"type": "boolean"
}
},
"title": "compress_imageArguments",
"required": [
"source"
]
}