# SVG optimizer
- Human page: https://happytails.ai/en/design-tools/svg-optimizer/
- Markdown: https://happytails.ai/en/design-tools/svg-optimizer.md
- Structured JSON: https://happytails.ai/agents/en/design-tools/svg-optimizer/index.json
- Visibility: public
## Tool capabilities
| Property | Value |
| --- | --- |
| Tool ID | `svg-optimizer` |
| Category | design-tools |
| Implementation | Registered implementation. Registration alone is not a production-quality guarantee. |
| Browser execution | Use the visible action or interactive controls. |
| Browser processing | Browser; see tool notes for network behavior. |
| HTTP API | /api/v1/tools/svg-optimizer/run |
| Browser-agent interface | run_current_tool |
### Implementation notes
Optimizes SVG source. This is not an SVG sanitizer; inspect external links and scripts before embedding untrusted markup.
### Inputs and settings
Text input: SVG source.
Example or placeholder shown in the interface (not a validated fixture):
```text
```
Paste complete SVG markup, including the outer svg element. Up to 1,000,000 characters. Review the settings before running.
No additional settings are declared for this tool.
### HTTP contract
API calls process supplied data on the server. The website origin is `https://happytails.ai`. Server API hosting is not connected on the public website yet. Use your local server origin to test these requests.
```http
POST https://happytails.ai/api/v1/tools/svg-optimizer/run
Content-Type: application/json
```
[Detailed operation reference](https://happytails.ai/en/api/tools/svg-optimizer.md) ยท [Shared API guide](https://happytails.ai/en/api.md)
#### Limits
| Limit | Value |
| --- | --- |
| request_bytes | 8388608 |
| input_characters | 1000000 |
| files_bytes | 5242880 |
| max_files | 0 |
| timeout_seconds | 12 |
#### Complete input schema
```json
{
"type": "object",
"additionalProperties": false,
"properties": {
"input": {
"type": "string",
"maxLength": 1000000,
"default": "",
"description": "Plain text input. File tools use files instead unless otherwise documented."
},
"options": {
"type": "object",
"additionalProperties": false,
"properties": {}
}
}
}
```
#### Complete output schema
```json
{
"type": "object",
"required": [
"tool",
"result"
],
"properties": {
"tool": {
"type": "string"
},
"result": {
"type": "object",
"required": [
"text",
"files"
],
"properties": {
"text": {
"type": [
"string",
"null"
]
},
"data": {
"description": "Parsed JSON when the textual result is JSON."
},
"name": {
"type": "string"
},
"mime": {
"type": "string"
},
"files": {
"type": "array",
"items": {
"type": "object",
"required": [
"name",
"mime",
"bytes",
"base64"
],
"properties": {
"name": {
"type": "string"
},
"mime": {
"type": "string"
},
"bytes": {
"type": "integer"
},
"base64": {
"type": "string",
"contentEncoding": "base64"
}
}
}
}
}
}
}
}
```
#### Error and retry handling
Failures return a non-200 status and `error.code` plus `error.message`. Correct invalid input before retrying; retry server-busy responses with bounded backoff. Returned files contain Base64 data, not persistent download URLs. Decode and inspect the output before treating conversion as successful. See the shared API guide for the complete status and timeout rules.
### Browser-agent workflow
1. Open the human page in a browser that supports WebMCP.
2. Discover the interface exposed by that page; use its actual schema.
3. Select files on the page first when the tool requires files.
4. Call `run_current_tool` with valid input and settings.
5. Inspect the returned result or error and the displayed output. Retrieve files from the displayed download links.
Calls do not automatically copy or download results. Browser permissions still apply. Interface availability alone is not proof of successful execution.
### Planning specification
Before/after render and size; preserve IDs/accessibility when requested; no active-content execution.
This describes intended requirements. Use the implementation notes, interface schema and observed output to determine current support.
### Complete machine-readable capability record
```json
{
"id": "svg-optimizer",
"category": "design-tools",
"built": true,
"requirements": "Before/after render and size; preserve IDs/accessibility when requested; no active-content execution.",
"implementation": {
"fields": [],
"note": "Optimizes SVG source. This is not an SVG sanitizer; inspect external links and scripts before embedding untrusted markup.",
"experience": {
"automatic": false,
"single": false,
"label": "SVG source",
"placeholder": "",
"help": "Paste complete SVG markup, including the outer svg element. Up to 1,000,000 characters. Review the settings before running.",
"action": null
},
"mode": "explicit",
"interactive": false
},
"execution": "POST /api/v1/tools/svg-optimizer/run",
"api": {
"id": "svg-optimizer",
"name": "SVG optimizer",
"category": "design-tools",
"description": "Before/after render and size.",
"notes": "Optimizes SVG source. This is not an SVG sanitizer; inspect external links and scripts before embedding untrusted markup.",
"human_path": "/en/design-tools/svg-optimizer/",
"method": "POST",
"endpoint": "/api/v1/tools/svg-optimizer/run",
"schema_url": "/api/v1/tools/svg-optimizer",
"input_schema": {
"type": "object",
"additionalProperties": false,
"properties": {
"input": {
"type": "string",
"maxLength": 1000000,
"default": "",
"description": "Plain text input. File tools use files instead unless otherwise documented."
},
"options": {
"type": "object",
"additionalProperties": false,
"properties": {}
}
}
},
"output_schema": {
"type": "object",
"required": [
"tool",
"result"
],
"properties": {
"tool": {
"type": "string"
},
"result": {
"type": "object",
"required": [
"text",
"files"
],
"properties": {
"text": {
"type": [
"string",
"null"
]
},
"data": {
"description": "Parsed JSON when the textual result is JSON."
},
"name": {
"type": "string"
},
"mime": {
"type": "string"
},
"files": {
"type": "array",
"items": {
"type": "object",
"required": [
"name",
"mime",
"bytes",
"base64"
],
"properties": {
"name": {
"type": "string"
},
"mime": {
"type": "string"
},
"bytes": {
"type": "integer"
},
"base64": {
"type": "string",
"contentEncoding": "base64"
}
}
}
}
}
}
}
},
"processing": "Server; same transformation code as browser tools",
"limits": {
"request_bytes": 8388608,
"input_characters": 1000000,
"files_bytes": 5242880,
"max_files": 0,
"timeout_seconds": 12
}
},
"agent_processing": "Server; same transformation code as browser tools",
"browser_agent": {
"supported": true,
"name": "run_current_tool",
"discovery": "WebMCP on the human page in a supporting browser",
"verification": "See audit/API-AUDIT.md; availability is not verification"
}
}
```
## Page guide
Before/after render and size.
## How to use SVG optimizer
1. Enter svg source in the input field.
2. Review the settings, then choose Run SVG optimizer.
3. Review the result, then use Copy result or a download link when available.
## Working with svg optimizer
Design utilities help translate colors, dimensions and layout values into reusable settings. A color representation or size calculation is only useful when its units and intended display context are clear.
## Common questions
### Are colors identical on every display?
No. Display calibration, color management and viewing conditions can change appearance. Numeric color conversion does not control those conditions.
### Does a computed contrast ratio describe the whole design?
A ratio compares specified foreground and background colors. Transparency, images, font size and other visual choices can change the actual reading experience.