{ "title": "Add page numbers", "human_url": "https://happytails.ai/en/pdf-tools/add-page-numbers/", "agent_url": "https://happytails.ai/agents/en/pdf-tools/add-page-numbers/", "language": "en", "markdown_url": "https://happytails.ai/en/pdf-tools/add-page-numbers.md", "content": "Add page numbers\nAdd page numbers to a PDF.\nUseful next steps\nMerge PDF\nCombine PDF files into one document.\nReorder pages\nArrange PDF pages in a new order.\nRotate PDF\nRotate selected PDF pages.\nHow to use Add page numbers\nChoose a file in PDF.\nReview the settings, then choose Run Add page numbers.\nReview the result, then use Copy result or a download link when available.\nWhat to expect\nAdd page numbers to a PDF. Numbers appear near the bottom-left corner as page / total. The numbering follows the original document’s page positions.", "content_format": "text/plain", "visibility": "public", "links": [ { "name": "Merge PDF Combine PDF files into one document.", "url": "https://happytails.ai/en/pdf-tools/merge-pdf/" }, { "name": "Reorder pages Arrange PDF pages in a new order.", "url": "https://happytails.ai/en/pdf-tools/reorder-pages/" }, { "name": "Rotate PDF Rotate selected PDF pages.", "url": "https://happytails.ai/en/pdf-tools/rotate-pdf/" } ], "tool": { "id": "add-page-numbers", "category": "pdf-tools", "built": true, "requirements": "Position, start value, page ranges and margins; avoid overlapping existing content.", "implementation": { "fields": [ { "key": "pages", "label": "Pages (blank = all)", "value": "", "type": "text" } ], "files": true, "multiple": false, "input": false, "accept": ".pdf", "note": "Page numbers start at 1. Password-encrypted PDFs must be unlocked first.", "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/add-page-numbers/run", "api": { "id": "add-page-numbers", "name": "Add page numbers", "category": "pdf-tools", "description": "Add page numbers to a PDF.", "notes": "Page numbers start at 1. Password-encrypted PDFs must be unlocked first.", "human_path": "/en/pdf-tools/add-page-numbers/", "method": "POST", "endpoint": "/api/v1/tools/add-page-numbers/run", "schema_url": "/api/v1/tools/add-page-numbers", "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": { "pages": { "type": "string", "description": "Pages (blank = all)", "default": "" } } }, "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; same transformation code as browser tools", "limits": { "request_bytes": 8388608, "input_characters": 1000000, "files_bytes": 5242880, "max_files": 1, "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" } }, "markdown": "# Add page numbers\n\n- Human page: https://happytails.ai/en/pdf-tools/add-page-numbers/\n- Markdown: https://happytails.ai/en/pdf-tools/add-page-numbers.md\n- Structured JSON: https://happytails.ai/agents/en/pdf-tools/add-page-numbers/index.json\n- Visibility: public\n\n## Tool capabilities\n\n| Property | Value |\n| --- | --- |\n| Tool ID | `add-page-numbers` |\n| Category | pdf-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 | Browser; see tool notes for network behavior. |\n| HTTP API | /api/v1/tools/add-page-numbers/run |\n| Browser-agent interface | run_current_tool |\n\n### Implementation notes\n\nPage numbers start at 1. Password-encrypted PDFs must be unlocked first.\n\n### Inputs and settings\n\nNo free-text input is required. Use the file inputs and/or settings below.\n\nAccepted browser files: `.pdf`. Choose one file.\n\n| Setting | Meaning | Control type | Default | Constraints |\n| --- | --- | --- | --- | --- |\n| `pages` | Pages (blank = all) | text | \"\" | |\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/add-page-numbers/run\nContent-Type: application/json\n```\n\n[Detailed operation reference](https://happytails.ai/en/api/tools/add-page-numbers.md) · [Shared API guide](https://happytails.ai/en/api.md)\n\n#### Limits\n\n| Limit | Value |\n| --- | --- |\n| request_bytes | 8388608 |\n| input_characters | 1000000 |\n| files_bytes | 5242880 |\n| max_files | 1 |\n| timeout_seconds | 12 |\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 \"pages\": {\n \"type\": \"string\",\n \"description\": \"Pages (blank = all)\",\n \"default\": \"\"\n }\n }\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\nPosition, start value, page ranges and margins; avoid overlapping existing content.\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\": \"add-page-numbers\",\n \"category\": \"pdf-tools\",\n \"built\": true,\n \"requirements\": \"Position, start value, page ranges and margins; avoid overlapping existing content.\",\n \"implementation\": {\n \"fields\": [\n {\n \"key\": \"pages\",\n \"label\": \"Pages (blank = all)\",\n \"value\": \"\",\n \"type\": \"text\"\n }\n ],\n \"files\": true,\n \"multiple\": false,\n \"input\": false,\n \"accept\": \".pdf\",\n \"note\": \"Page numbers start at 1. Password-encrypted PDFs must be unlocked first.\",\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/add-page-numbers/run\",\n \"api\": {\n \"id\": \"add-page-numbers\",\n \"name\": \"Add page numbers\",\n \"category\": \"pdf-tools\",\n \"description\": \"Add page numbers to a PDF.\",\n \"notes\": \"Page numbers start at 1. Password-encrypted PDFs must be unlocked first.\",\n \"human_path\": \"/en/pdf-tools/add-page-numbers/\",\n \"method\": \"POST\",\n \"endpoint\": \"/api/v1/tools/add-page-numbers/run\",\n \"schema_url\": \"/api/v1/tools/add-page-numbers\",\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 \"pages\": {\n \"type\": \"string\",\n \"description\": \"Pages (blank = all)\",\n \"default\": \"\"\n }\n }\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; same transformation code as browser tools\",\n \"limits\": {\n \"request_bytes\": 8388608,\n \"input_characters\": 1000000,\n \"files_bytes\": 5242880,\n \"max_files\": 1,\n \"timeout_seconds\": 12\n }\n },\n \"agent_processing\": \"Server; same transformation code as browser tools\",\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\nAdd page numbers to a PDF.\n\n## Useful next steps\n\n- [Merge PDF](https://happytails.ai/en/pdf-tools/merge-pdf/): Combine PDF files into one document. ([Markdown](https://happytails.ai/en/pdf-tools/merge-pdf.md))\n\n- [Reorder pages](https://happytails.ai/en/pdf-tools/reorder-pages/): Arrange PDF pages in a new order. ([Markdown](https://happytails.ai/en/pdf-tools/reorder-pages.md))\n\n- [Rotate PDF](https://happytails.ai/en/pdf-tools/rotate-pdf/): Rotate selected PDF pages. ([Markdown](https://happytails.ai/en/pdf-tools/rotate-pdf.md))\n\n## How to use Add page numbers\n\n1. Choose a file in PDF.\n2. Review the settings, then choose Run Add page numbers.\n3. Review the result, then use Copy result or a download link when available.\n\n## What to expect\n\nAdd page numbers to a PDF. Numbers appear near the bottom-left corner as page / total. The numbering follows the original document’s page positions.\n" }