{ "title": "Font inspector", "human_url": "https://happytails.ai/en/font-tools/font-inspector/", "agent_url": "https://happytails.ai/agents/en/font-tools/font-inspector/", "language": "en", "markdown_url": "https://happytails.ai/en/font-tools/font-inspector.md", "content": "Font inspector\nInspect a font’s names, glyph coverage and format.\nUseful next steps\nTTF to WOFF2\nCompress a TrueType font into a WOFF2 web font.\nWOFF2 to TTF\nUnpack a TrueType-based WOFF2 font into TTF.\nHow to use Font inspector\nChoose a supported file using the drop area or file picker.\nReview the clearly labeled settings. Choose the action button to process your file.\nCompare the result with your original, then download it. Keep the original for further edits.\nWhat to expect\nInspect a font’s names, glyph coverage and format. Read TTF, OTF, WOFF and WOFF2; report family, style, glyph count, character coverage, variable axes and embedding flags.", "content_format": "text/plain", "visibility": "public", "links": [ { "name": "TTF to WOFF2 Compress a TrueType font into a WOFF2 web font.", "url": "https://happytails.ai/en/font-tools/ttf-to-woff2/" }, { "name": "WOFF2 to TTF Unpack a TrueType-based WOFF2 font into TTF.", "url": "https://happytails.ai/en/font-tools/woff2-to-ttf/" } ], "tool": { "id": "font-inspector", "category": "font-tools", "built": true, "requirements": "Read TTF, OTF, WOFF and WOFF2; report family, style, glyph count, character coverage, variable axes and embedding flags.", "implementation": { "fields": [], "files": true, "accept": ".ttf,.otf,.woff,.woff2", "multiple": false, "input": false, "processing": "Server required", "native": true, "expansion": true, "maxFileBytes": 20971520, "note": "Processed on our server with no external conversion service. Reads font metadata and coverage. Embedding flags are metadata, not legal permission. Check the font license before reuse.", "experience": { "automatic": false, "single": false, "label": "Your text", "placeholder": "Type or paste your input…", "help": "Up to 1,000,000 characters. Review the settings before running.", "action": null }, "mode": "explicit", "interactive": false }, "execution": "POST /api/v1/tools/font-inspector/run", "api": { "id": "font-inspector", "name": "Font inspector", "category": "font-tools", "description": "Inspect a font’s names, glyph coverage and format.", "notes": "Processed on our server with no external conversion service. Reads font metadata and coverage. Embedding flags are metadata, not legal permission. Check the font license before reuse.", "human_path": "/en/font-tools/font-inspector/", "method": "POST", "endpoint": "/api/v1/tools/font-inspector/run", "schema_url": "/api/v1/tools/font-inspector", "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": {} }, "files": { "type": "array", "maxItems": 1, "items": { "type": "object", "required": [ "name", "base64" ], "additionalProperties": false, "properties": { "name": { "type": "string", "maxLength": 200, "description": "Filename only, no path." }, "mime": { "type": "string", "maxLength": 150 }, "bytes": { "type": "integer", "minimum": 0, "description": "Optional decoded byte count; must match content if supplied." }, "base64": { "type": "string", "contentEncoding": "base64", "description": "File bytes as padded base64. Use the tool-specific limits.files_bytes value for the total decoded input size." } } } } } }, "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; self-hosted native engine, no external conversion service", "limits": { "request_bytes": 31457280, "input_characters": 1000000, "files_bytes": 20971520, "max_files": 1, "timeout_seconds": 90 } }, "agent_processing": "Server; self-hosted native engine, no external conversion service", "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" } }, "markdown": "# Font inspector\n\n- Human page: https://happytails.ai/en/font-tools/font-inspector/\n- Markdown: https://happytails.ai/en/font-tools/font-inspector.md\n- Structured JSON: https://happytails.ai/agents/en/font-tools/font-inspector/index.json\n- Visibility: public\n\n## Tool capabilities\n\n| Property | Value |\n| --- | --- |\n| Tool ID | `font-inspector` |\n| Category | font-tools |\n| Implementation | Registered implementation. Registration alone is not a production-quality guarantee. |\n| Browser execution | Use the visible action or interactive controls. |\n| Browser processing | Server required |\n| HTTP API | /api/v1/tools/font-inspector/run |\n| Browser-agent interface | run_current_tool |\n\n### Implementation notes\n\nProcessed on our server with no external conversion service. Reads font metadata and coverage. Embedding flags are metadata, not legal permission. Check the font license before reuse.\n\n### Inputs and settings\n\nNo free-text input is required. Use the file inputs and/or settings below.\n\nAccepted browser files: `.ttf,.otf,.woff,.woff2`. Choose one file.\n\nBrowser file-input limit: 20971520 bytes in total. HTTP limits can differ.\n\nNo additional settings are declared for this tool.\n\n### HTTP contract\n\nAPI 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.\n\n```http\nPOST https://happytails.ai/api/v1/tools/font-inspector/run\nContent-Type: application/json\n```\n\n[Detailed operation reference](https://happytails.ai/en/api/tools/font-inspector.md) · [Shared API guide](https://happytails.ai/en/api.md)\n\n#### Limits\n\n| Limit | Value |\n| --- | --- |\n| request_bytes | 31457280 |\n| input_characters | 1000000 |\n| files_bytes | 20971520 |\n| max_files | 1 |\n| timeout_seconds | 90 |\n\n#### Complete input schema\n\n```json\n{\n \"type\": \"object\",\n \"additionalProperties\": false,\n \"properties\": {\n \"input\": {\n \"type\": \"string\",\n \"maxLength\": 1000000,\n \"default\": \"\",\n \"description\": \"Plain text input. File tools use files instead unless otherwise documented.\"\n },\n \"options\": {\n \"type\": \"object\",\n \"additionalProperties\": false,\n \"properties\": {}\n },\n \"files\": {\n \"type\": \"array\",\n \"maxItems\": 1,\n \"items\": {\n \"type\": \"object\",\n \"required\": [\n \"name\",\n \"base64\"\n ],\n \"additionalProperties\": false,\n \"properties\": {\n \"name\": {\n \"type\": \"string\",\n \"maxLength\": 200,\n \"description\": \"Filename only, no path.\"\n },\n \"mime\": {\n \"type\": \"string\",\n \"maxLength\": 150\n },\n \"bytes\": {\n \"type\": \"integer\",\n \"minimum\": 0,\n \"description\": \"Optional decoded byte count; must match content if supplied.\"\n },\n \"base64\": {\n \"type\": \"string\",\n \"contentEncoding\": \"base64\",\n \"description\": \"File bytes as padded base64. Use the tool-specific limits.files_bytes value for the total decoded input size.\"\n }\n }\n }\n }\n }\n}\n```\n\n#### Complete output schema\n\n```json\n{\n \"type\": \"object\",\n \"required\": [\n \"tool\",\n \"result\"\n ],\n \"properties\": {\n \"tool\": {\n \"type\": \"string\"\n },\n \"result\": {\n \"type\": \"object\",\n \"required\": [\n \"text\",\n \"files\"\n ],\n \"properties\": {\n \"text\": {\n \"type\": [\n \"string\",\n \"null\"\n ]\n },\n \"data\": {\n \"description\": \"Parsed JSON when the textual result is JSON.\"\n },\n \"name\": {\n \"type\": \"string\"\n },\n \"mime\": {\n \"type\": \"string\"\n },\n \"files\": {\n \"type\": \"array\",\n \"items\": {\n \"type\": \"object\",\n \"required\": [\n \"name\",\n \"mime\",\n \"bytes\",\n \"base64\"\n ],\n \"properties\": {\n \"name\": {\n \"type\": \"string\"\n },\n \"mime\": {\n \"type\": \"string\"\n },\n \"bytes\": {\n \"type\": \"integer\"\n },\n \"base64\": {\n \"type\": \"string\",\n \"contentEncoding\": \"base64\"\n }\n }\n }\n }\n }\n }\n }\n}\n```\n\n#### Error and retry handling\n\nFailures 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.\n\n### Browser-agent workflow\n\n1. Open the human page in a browser that supports WebMCP.\n2. Discover the interface exposed by that page; use its actual schema.\n3. Select files on the page first when the tool requires files.\n4. Call `run_current_tool` with valid input and settings.\n5. Inspect the returned result or error and the displayed output. Retrieve files from the displayed download links.\n\nCalls do not automatically copy or download results. Browser permissions still apply. Interface availability alone is not proof of successful execution.\n\n### Planning specification\n\nRead TTF, OTF, WOFF and WOFF2; report family, style, glyph count, character coverage, variable axes and embedding flags.\n\nThis describes intended requirements. Use the implementation notes, interface schema and observed output to determine current support.\n\n### Complete machine-readable capability record\n\n```json\n{\n \"id\": \"font-inspector\",\n \"category\": \"font-tools\",\n \"built\": true,\n \"requirements\": \"Read TTF, OTF, WOFF and WOFF2; report family, style, glyph count, character coverage, variable axes and embedding flags.\",\n \"implementation\": {\n \"fields\": [],\n \"files\": true,\n \"accept\": \".ttf,.otf,.woff,.woff2\",\n \"multiple\": false,\n \"input\": false,\n \"processing\": \"Server required\",\n \"native\": true,\n \"expansion\": true,\n \"maxFileBytes\": 20971520,\n \"note\": \"Processed on our server with no external conversion service. Reads font metadata and coverage. Embedding flags are metadata, not legal permission. Check the font license before reuse.\",\n \"experience\": {\n \"automatic\": false,\n \"single\": false,\n \"label\": \"Your text\",\n \"placeholder\": \"Type or paste your input…\",\n \"help\": \"Up to 1,000,000 characters. Review the settings before running.\",\n \"action\": null\n },\n \"mode\": \"explicit\",\n \"interactive\": false\n },\n \"execution\": \"POST /api/v1/tools/font-inspector/run\",\n \"api\": {\n \"id\": \"font-inspector\",\n \"name\": \"Font inspector\",\n \"category\": \"font-tools\",\n \"description\": \"Inspect a font’s names, glyph coverage and format.\",\n \"notes\": \"Processed on our server with no external conversion service. Reads font metadata and coverage. Embedding flags are metadata, not legal permission. Check the font license before reuse.\",\n \"human_path\": \"/en/font-tools/font-inspector/\",\n \"method\": \"POST\",\n \"endpoint\": \"/api/v1/tools/font-inspector/run\",\n \"schema_url\": \"/api/v1/tools/font-inspector\",\n \"input_schema\": {\n \"type\": \"object\",\n \"additionalProperties\": false,\n \"properties\": {\n \"input\": {\n \"type\": \"string\",\n \"maxLength\": 1000000,\n \"default\": \"\",\n \"description\": \"Plain text input. File tools use files instead unless otherwise documented.\"\n },\n \"options\": {\n \"type\": \"object\",\n \"additionalProperties\": false,\n \"properties\": {}\n },\n \"files\": {\n \"type\": \"array\",\n \"maxItems\": 1,\n \"items\": {\n \"type\": \"object\",\n \"required\": [\n \"name\",\n \"base64\"\n ],\n \"additionalProperties\": false,\n \"properties\": {\n \"name\": {\n \"type\": \"string\",\n \"maxLength\": 200,\n \"description\": \"Filename only, no path.\"\n },\n \"mime\": {\n \"type\": \"string\",\n \"maxLength\": 150\n },\n \"bytes\": {\n \"type\": \"integer\",\n \"minimum\": 0,\n \"description\": \"Optional decoded byte count; must match content if supplied.\"\n },\n \"base64\": {\n \"type\": \"string\",\n \"contentEncoding\": \"base64\",\n \"description\": \"File bytes as padded base64. Use the tool-specific limits.files_bytes value for the total decoded input size.\"\n }\n }\n }\n }\n }\n },\n \"output_schema\": {\n \"type\": \"object\",\n \"required\": [\n \"tool\",\n \"result\"\n ],\n \"properties\": {\n \"tool\": {\n \"type\": \"string\"\n },\n \"result\": {\n \"type\": \"object\",\n \"required\": [\n \"text\",\n \"files\"\n ],\n \"properties\": {\n \"text\": {\n \"type\": [\n \"string\",\n \"null\"\n ]\n },\n \"data\": {\n \"description\": \"Parsed JSON when the textual result is JSON.\"\n },\n \"name\": {\n \"type\": \"string\"\n },\n \"mime\": {\n \"type\": \"string\"\n },\n \"files\": {\n \"type\": \"array\",\n \"items\": {\n \"type\": \"object\",\n \"required\": [\n \"name\",\n \"mime\",\n \"bytes\",\n \"base64\"\n ],\n \"properties\": {\n \"name\": {\n \"type\": \"string\"\n },\n \"mime\": {\n \"type\": \"string\"\n },\n \"bytes\": {\n \"type\": \"integer\"\n },\n \"base64\": {\n \"type\": \"string\",\n \"contentEncoding\": \"base64\"\n }\n }\n }\n }\n }\n }\n }\n },\n \"processing\": \"Server; self-hosted native engine, no external conversion service\",\n \"limits\": {\n \"request_bytes\": 31457280,\n \"input_characters\": 1000000,\n \"files_bytes\": 20971520,\n \"max_files\": 1,\n \"timeout_seconds\": 90\n }\n },\n \"agent_processing\": \"Server; self-hosted native engine, no external conversion service\",\n \"browser_agent\": {\n \"supported\": true,\n \"name\": \"run_current_tool\",\n \"discovery\": \"WebMCP on the human page in a supporting browser\",\n \"verification\": \"See audit/API-AUDIT.md; availability is not verification\"\n }\n}\n```\n\n## Page guide\n\nInspect a font’s names, glyph coverage and format.\n\n## Useful next steps\n\n- [TTF to WOFF2](https://happytails.ai/en/font-tools/ttf-to-woff2/): Compress a TrueType font into a WOFF2 web font. ([Markdown](https://happytails.ai/en/font-tools/ttf-to-woff2.md))\n\n- [WOFF2 to TTF](https://happytails.ai/en/font-tools/woff2-to-ttf/): Unpack a TrueType-based WOFF2 font into TTF. ([Markdown](https://happytails.ai/en/font-tools/woff2-to-ttf.md))\n\n## How to use Font inspector\n\n1. Choose a supported file using the drop area or file picker.\n2. Review the clearly labeled settings. Choose the action button to process your file.\n3. Compare the result with your original, then download it. Keep the original for further edits.\n\n## What to expect\n\nInspect a font’s names, glyph coverage and format. Read TTF, OTF, WOFF and WOFF2; report family, style, glyph count, character coverage, variable axes and embedding flags.\n" }