Excel Duplicate Substring Remover – Clean Repeated Text in Cells

Remove duplicate substrings from Excel cells with intelligent detection. Keep original formatting intact while eliminating redundant text using Aspose.Cells deduplication API.

Introduction: Remove Unwanted Characters with Precision

The Repeat Substring Cleaner API removes duplicate substrings within individual cells of an Excel range while preserving cell formatting, data validation, and other workbook structures. It processes each cell independently, keeping only the first occurrence of each duplicate substring.

Data Source Options

Field	Type	Required	Description
`workbook`	file	Yes	Excel workbook file (.xlsx, .xlsm)
`range`	string	Yes	Target range to process (e.g., “A1:D100”, “Sheet1!A:D”)

Delimiter Options

Field	Type	Default	Description
`delimiters`	string	`"preset"`	Options: `preset`, `custom`, `comma`, `semicolon`, `space`, `tab`, `line-break` or a custom delimiter string (multiple characters are treated as a composite)
`treatConsecutiveDelimitersAsOne`	boolean	`false`	Collapse adjacent delimiters into a single separator
`caseSensitive`	boolean	`false`	Determines whether the comparison is case‑sensitive. When `false`, case is ignored during duplicate detection.

RemoveDuplicateSubstrings API

Web API

PUT https://api.aspose.cloud/v4.0/cells/content/remove/duplicate-substrings

Security and Authentication

The Aspose.Cells Cloud APIs are secure and require JWT token-based authentication.

-H "Authorization: Bearer {access_token}"

The request parameters of RemoveDuplicateSubstrings API are

Parameter Name	Type	Path/Query String/HTTPBody	Description
Spreadsheet	File	FormData	The spreadsheet file to be processed. Supported formats include XLSX, XLS, ODS, CSV, etc.
delimiters	String	Query	Specifies one or more delimiter characters used to split cell content into substrings for duplicate detection and removal. Multiple delimiters can be specified (e.g., `",;"`).
treatConsecutiveDelimitersAsOne	Boolean	Query	When set to `true`, consecutive delimiter characters are treated as a single separator. When `false`, each delimiter is processed individually.
caseSensitive	Boolean	Query	When `true`, duplicate detection considers letter case (e.g., “Text” ≠ “text”). When `false`, case is ignored during duplicate comparison.
worksheet	String	Query	(Optional) The name of the worksheet where duplicate substring removal will be applied. If omitted, the operation applies to the first worksheet.
range	String	Query	(Optional) The cell range where duplicate substring removal will be applied (e.g., `"A1:C10"`). If omitted, the operation applies to all used cells in the specified worksheet.
outPath	String	Query	(Optional) The cloud storage folder path where the processed workbook will be saved. If omitted, the file is saved in the source folder.
outStorageName	String	Query	The name of the cloud storage where the output file will be stored.
region	String	Query	(Optional) Sets the locale for text processing, which may affect delimiter interpretation and case‑sensitivity rules for certain languages (e.g., `"en-US"`, `"tr-TR"`).
password	String	Query	(Optional) If the uploaded spreadsheet is password‑protected, provide the password to open and process the file.

Example request (cURL)

curl -X PUT "https://api.aspose.cloud/v4.0/cells/content/remove/duplicate-substrings?delimiters=comma&caseSensitive=false" \
     -H "Authorization: Bearer {access_token}" \
     -F "Spreadsheet=@Sample.xlsx" \
     -F "range=A1:D100"

Response

[
  {
    "Name": "ResponseFile",
    "DataType": {
      "Identifier": "File",
      "Reference": "Stream"
    }
  }
]

Status Code

Code	Meaning	Description
200	OK	The request succeeded and the processed workbook is returned.
202	Accepted	The request is accepted for asynchronous processing.
400	Bad Request	The request is malformed or contains invalid parameters.
401	Unauthorized	Authentication failed or token is missing/invalid.
404	Not Found	The specified workbook or resource could not be found.
500	Internal Server Error	An unexpected error occurred on the server side.

Where should we use the Remove Duplicate Substrings API?

Data Cleaning & Standardization Scenarios: Clean up tags like "VIP,Premium,VIP,Gold" → "VIP,Premium,Gold".
Technical & Operational Data: Clean log entries with repeated error codes, remove duplicate bin/rack identifiers, and so on.
Content & Media Management: Deduplicate skill tags, remove redundant certification entries.

Why should you use the Remove Duplicate Substrings API?

Automate Manual Tasks: Eliminate tedious editing and reduce human error.
Preserve Data Integrity: Cell colors, fonts, borders, and conditional formatting remain unchanged; drop‑down lists and validation rules are preserved.
Flexible Processing: Delimiter‑agnostic with optional case‑sensitivity control and header protection.
Developer‑Friendly: Aspose.Cells Cloud provides SDK libraries in multiple languages, enabling quick development with comprehensive documentation.
Cost‑Effective: The operation is performed in the cloud, avoiding the need to store intermediate files locally.

OpenAPI Specification

The OpenAPI Specification defines a publicly accessible programming interface and lets you carry out REST interactions directly from a web browser.

Use Aspose.Cells Cloud SDKs

Using the SDK is the best way to accelerate development. The SDK handles the underlying details, allowing you to simply implement duplicate‑substring removal for cells with minimal code. Please check out the GitHub repository for a complete list of Aspose.Cells Cloud SDKs.

The following code examples illustrate how to make calls to Aspose.Cells web services using various SDKs: