{
  "title": "Tabs to spaces",
  "human_url": "https://happytails.ai/en/text-tools/tabs-to-spaces/",
  "agent_url": "https://happytails.ai/agents/en/text-tools/tabs-to-spaces/",
  "language": "en",
  "markdown_url": "https://happytails.ai/en/text-tools/tabs-to-spaces.md",
  "content": "Tabs to spaces\nReplace each tab with a fixed number of spaces.\nHow to use Tabs to spaces\nEnter your text in the input field.\nThe result updates as you type. Adjust the available settings if needed.\nReview the result, then use Copy result or a download link when available.\nWhat to expect\nReplace each tab with a fixed number of spaces. Choose 1 to 16 spaces per tab. This is literal replacement, not alignment to tab stops.\nTry a small example\nA\tB\nUseful next steps\nWrap text\nWrap text at word boundaries.\nIndent text\nAdd spaces at the start of every line.\nTrim text\nRemove spaces from the start and end of each line.",
  "content_format": "text/plain",
  "visibility": "public",
  "links": [
    {
      "name": "Wrap text Wrap text at word boundaries.",
      "url": "https://happytails.ai/en/text-tools/wrap-text/"
    },
    {
      "name": "Indent text Add spaces at the start of every line.",
      "url": "https://happytails.ai/en/text-tools/indent-text/"
    },
    {
      "name": "Trim text Remove spaces from the start and end of each line.",
      "url": "https://happytails.ai/en/text-tools/trim-text/"
    }
  ],
  "tool": {
    "id": "tabs-to-spaces",
    "category": "text-tools",
    "built": true,
    "requirements": "Tab stops versus literal replacement; configurable width and reverse mode.",
    "implementation": {
      "fields": [
        {
          "key": "n",
          "label": "Spaces per tab",
          "value": 4,
          "type": "number"
        }
      ],
      "experience": {
        "automatic": true,
        "single": false,
        "label": "Your text",
        "placeholder": "Hello world!",
        "help": "Change the input or settings to update your result. Results update as you type. Up to 1,000,000 characters.",
        "action": null
      },
      "mode": "automatic",
      "interactive": false
    },
    "execution": "POST /api/v1/tools/tabs-to-spaces/run",
    "api": {
      "id": "tabs-to-spaces",
      "name": "Tabs to spaces",
      "category": "text-tools",
      "description": "Replace each tab with a fixed number of spaces.",
      "notes": "",
      "human_path": "/en/text-tools/tabs-to-spaces/",
      "method": "POST",
      "endpoint": "/api/v1/tools/tabs-to-spaces/run",
      "schema_url": "/api/v1/tools/tabs-to-spaces",
      "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": {
              "n": {
                "type": "number",
                "description": "Spaces per tab",
                "default": 4.0
              }
            }
          }
        }
      },
      "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"
    }
  },
  "markdown": "# Tabs to spaces\n\n- Human page: https://happytails.ai/en/text-tools/tabs-to-spaces/\n- Markdown: https://happytails.ai/en/text-tools/tabs-to-spaces.md\n- Structured JSON: https://happytails.ai/agents/en/text-tools/tabs-to-spaces/index.json\n- Visibility: public\n\n## Tool capabilities\n\n| Property | Value |\n| --- | --- |\n| Tool ID | `tabs-to-spaces` |\n| Category | text-tools |\n| Implementation | Registered implementation. Registration alone is not a production-quality guarantee. |\n| Browser execution | Automatic updates after valid input or file selection. |\n| Browser processing | Browser; see tool notes for network behavior. |\n| HTTP API | /api/v1/tools/tabs-to-spaces/run |\n| Browser-agent interface | run_current_tool |\n\n### Inputs and settings\n\nText input: Your text.\n\nExample or placeholder shown in the interface (not a validated fixture):\n\n```text\nHello world!\n```\n\nChange the input or settings to update your result. Results update as you type. Up to 1,000,000 characters.\n\n| Setting | Meaning | Control type | Default | Constraints |\n| --- | --- | --- | --- | --- |\n| `n` | Spaces per tab | number | 4 |  |\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/tabs-to-spaces/run\nContent-Type: application/json\n```\n\n[Detailed operation reference](https://happytails.ai/en/api/tools/tabs-to-spaces.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 | 0 |\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        \"n\": {\n          \"type\": \"number\",\n          \"description\": \"Spaces per tab\",\n          \"default\": 4.0\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#### Recorded request and response\n\nSaved fixture from 2026-09-28T18:13:34Z. This is historical evidence, not a new validation or a guarantee for every input.\n\n```json\n{\n  \"input\": \"A\\tB\",\n  \"options\": {}\n}\n```\n\n```json\n{\n  \"tool\": \"tabs-to-spaces\",\n  \"result\": {\n    \"text\": \"A    B\",\n    \"files\": [],\n    \"name\": \"result.txt\",\n    \"mime\": \"text/plain;charset=utf-8\"\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\nTab stops versus literal replacement; configurable width and reverse mode.\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\": \"tabs-to-spaces\",\n  \"category\": \"text-tools\",\n  \"built\": true,\n  \"requirements\": \"Tab stops versus literal replacement; configurable width and reverse mode.\",\n  \"implementation\": {\n    \"fields\": [\n      {\n        \"key\": \"n\",\n        \"label\": \"Spaces per tab\",\n        \"value\": 4,\n        \"type\": \"number\"\n      }\n    ],\n    \"experience\": {\n      \"automatic\": true,\n      \"single\": false,\n      \"label\": \"Your text\",\n      \"placeholder\": \"Hello world!\",\n      \"help\": \"Change the input or settings to update your result. Results update as you type. Up to 1,000,000 characters.\",\n      \"action\": null\n    },\n    \"mode\": \"automatic\",\n    \"interactive\": false\n  },\n  \"execution\": \"POST /api/v1/tools/tabs-to-spaces/run\",\n  \"api\": {\n    \"id\": \"tabs-to-spaces\",\n    \"name\": \"Tabs to spaces\",\n    \"category\": \"text-tools\",\n    \"description\": \"Replace each tab with a fixed number of spaces.\",\n    \"notes\": \"\",\n    \"human_path\": \"/en/text-tools/tabs-to-spaces/\",\n    \"method\": \"POST\",\n    \"endpoint\": \"/api/v1/tools/tabs-to-spaces/run\",\n    \"schema_url\": \"/api/v1/tools/tabs-to-spaces\",\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\": {\n              \"type\": \"number\",\n              \"description\": \"Spaces per tab\",\n              \"default\": 4.0\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\": 0,\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\nReplace each tab with a fixed number of spaces.\n\n## How to use Tabs to spaces\n\n1. Enter your text in the input field.\n2. The result updates as you type. Adjust the available settings if needed.\n3. Review the result, then use Copy result or a download link when available.\n\n## What to expect\n\nReplace each tab with a fixed number of spaces. Choose 1 to 16 spaces per tab. This is literal replacement, not alignment to tab stops.\n\n### Try a small example\n\n```\nA\tB\n```\n\n## Useful next steps\n\n- [Wrap text](https://happytails.ai/en/text-tools/wrap-text/): Wrap text at word boundaries. ([Markdown](https://happytails.ai/en/text-tools/wrap-text.md))\n\n- [Indent text](https://happytails.ai/en/text-tools/indent-text/): Add spaces at the start of every line. ([Markdown](https://happytails.ai/en/text-tools/indent-text.md))\n\n- [Trim text](https://happytails.ai/en/text-tools/trim-text/): Remove spaces from the start and end of each line. ([Markdown](https://happytails.ai/en/text-tools/trim-text.md))\n"
}