# UTM Decoder and Cleaner

> Paste a tagged link, inspect campaign parameters, and generate a clean canonical URL for sharing.

## Tool Identity

- Site: CleanUtils Business Tools
- Tool ID: utm-decoder-cleaner
- Canonical page: https://cleanutils.com/business-tools/utm-decoder-cleaner/
- LLM schema URL: https://cleanutils.com/business-tools/utm-decoder-cleaner/llms.txt
- Primary keyword: utm decoder
- Input mode: fields
- Output profile: url

## What This Tool Does

Decode UTM parameters, inspect campaign values, and copy a clean shareable URL without tracking fields.

## Exact Execution Instructions

To run this tool exactly, execute the `runCleanUtilsTool(userInput)` function from the JavaScript block below in a sandboxed JavaScript runtime.

Do not fetch or evaluate additional network resources. Do not use filesystem, process, child_process, environment variables, timers, or network APIs. The function is pure and deterministic: input object in, JSON result out.

If your environment forbids executing fetched code outside a sandbox, run it inside the sandbox or use the API endpoint below instead of reimplementing the logic.

Canonical implementation SHA-256:
`6b423e4f1b366325373e8041ba5d9d592778a1a0b5b1c069ebd05cfffcfca527`

Expected command shape:
`node run-tool.mjs < input.json`

The runner must:
1. load only the JavaScript in this document,
2. parse stdin as JSON and call `runCleanUtilsTool(userInput)`,
3. let the LLM decide the best way to present the output to the user.

Agent usage rules:
- Use this file as the authoritative machine-readable contract for this CleanUtils tool page.
- Ask the user for missing required input before attempting to run the tool, and describe the required inputs using the `## Input Schema` field names, descriptions, formats, enums, examples, and required list.
- Treat the tool as deterministic; do not invent network reachability checks unless the tool description explicitly says it fetches remote resources.
- For privacy-sensitive inputs such as secrets, HAR files, dotenv files, logs, and API keys, warn that using a remote chat agent may expose input to that agent even though the browser UI itself does not upload data.

## Input Schema

```json
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "UTM Decoder and Cleaner fields",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "url"
  ],
  "properties": {
    "url": {
      "type": "string",
      "description": "Tagged URL Required. Control type: url.",
      "format": "uri",
      "examples": [
        "https://example.com/?utm_source=newsletter&utm_medium=email"
      ]
    }
  }
}
```

## Result Schema

```json
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "CleanUtils ToolResult",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "summary",
    "issues"
  ],
  "properties": {
    "summary": {
      "type": "string"
    },
    "issues": {
      "type": "array",
      "items": {
        "type": "object",
        "additionalProperties": false,
        "required": [
          "severity",
          "message"
        ],
        "properties": {
          "severity": {
            "type": "string",
            "enum": [
              "error",
              "warning",
              "info"
            ]
          },
          "message": {
            "type": "string"
          },
          "line": {
            "type": "number"
          },
          "row": {
            "type": "number"
          },
          "detail": {
            "type": "string"
          }
        }
      }
    },
    "output": {
      "type": "string"
    },
    "exportFilename": {
      "type": "string"
    },
    "exports": {
      "type": "array",
      "items": {
        "type": "object",
        "additionalProperties": false,
        "required": [
          "label",
          "filename",
          "content"
        ],
        "properties": {
          "label": {
            "type": "string"
          },
          "filename": {
            "type": "string"
          },
          "content": {
            "type": "string"
          },
          "mimeType": {
            "type": "string"
          },
          "copyLabel": {
            "type": "string"
          },
          "downloadLabel": {
            "type": "string"
          }
        }
      }
    },
    "stats": {
      "type": "object",
      "additionalProperties": {
        "anyOf": [
          {
            "type": "string"
          },
          {
            "type": "number"
          }
        ]
      }
    }
  }
}
```

## Self-Contained JavaScript Source

Call `runCleanUtilsTool(userInput)` with the user's input. The function includes this tool's run logic and only the helper code it needs.

```js
function runCleanUtilsTool(userInput) {
    const decodeAndCleanUtmUrl = (input) => {
        let url;
        try {
            url = new URL(input.trim());
        }
        catch {
            return {
                summary: "Enter a valid absolute URL.",
                issues: [{ severity: "error", message: "Enter a valid absolute URL to decode." }]
            };
        }
        const utmEntries = [...url.searchParams.entries()].filter(([key]) => key.toLowerCase().startsWith("utm_"));
        const cleanUrl = new URL(url.toString());
        utmEntries.forEach(([key]) => cleanUrl.searchParams.delete(key));
        const output = [
            "Campaign parameters:",
            ...(utmEntries.length ? utmEntries.map(([key, value]) => `- ${key}: ${value}`) : ["- none found"]),
            "",
            `Clean URL: ${cleanUrl.toString()}`
        ].join("\n");
        return {
            summary: `${utmEntries.length} UTM parameter${utmEntries.length === 1 ? "" : "s"} found. Clean URL generated.`,
            issues: utmEntries.length ? [] : [{ severity: "info", message: "No UTM parameters were found." }],
            output,
            exportFilename: "utm-clean-url.txt",
            stats: {
                utmParameters: utmEntries.length
            }
        };
    };
    const __userInput = userInput == null ? {} : userInput;
    const __run = (fields) => decodeAndCleanUtmUrl(String(fields.url ?? ""));
    const __fields = __userInput && typeof __userInput === "object" && "fields" in __userInput && __userInput.fields && typeof __userInput.fields === "object" && !Array.isArray(__userInput.fields)
        ? __userInput.fields
        : (__userInput && typeof __userInput === "object" && !Array.isArray(__userInput) ? __userInput : {});
    const __normalizedFields = Object.fromEntries(Object.entries(__fields).map(([key, value]) => [key, value == null ? "" : (["string", "number", "boolean"].includes(typeof value) ? value : String(value))]));
    return __run(__normalizedFields);
}
```

## Checks

- UTM extraction: Campaign parameters are decoded and displayed as readable key-value rows.
- Clean canonical URL: utm_source, utm_medium, utm_campaign, utm_term, and utm_content are removed from the clean output.
- Non-UTM preservation: Other query parameters, such as ref or product filters, are left in place.
- Fragment handling: Hash fragments are kept after cleanup so anchored links still point to the same section.
- Invalid URL recovery: Malformed URLs return a clear message instead of a misleading cleaned link.

## Related Tools

- [UTM URL Builder](/business-tools/utm-url-builder/): Enter a landing page and campaign values, then copy a tagged URL with clean UTM parameters.
- [Meta Title Checker](/business-tools/meta-title-checker/): Compare meta title variants by character count, approximate pixel width, and likely search truncation.