Developer ToolsFree Tool

Truncate CSV Columns

Provided byOnline CSV Toolsonlinetools.com/csv

Shortens values in chosen CSV columns to a maximum length.

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About this tool

What Truncate CSV Columns does

Truncate CSV Columns is a free online utility that shortens values in selected CSV columns to a user-defined maximum length. Users upload a CSV file, specify which columns need trimming, and set the desired output length; the tool processes the entire spreadsheet row by row, clipping any text that exceeds the limit while preserving the original format of all other data. This makes it useful for preparing datasets for platforms or databases with strict character constraints. The site, Online CSV Tools, is part of a larger collection of browser-based CSV utilities maintained by Browserling. Its interface presents upload fields and option toggles in a single view, with clear labels for column selection, truncation side, length, and symbol. Unlike some competitors that may require command-line use or paid subscriptions, this tool operates entirely in the browser at no cost, and its options are displayed inline without navigating away from the upload area.

Step by step

How to use the Online CSV Tools Truncate CSV Columns

  1. 1

    Upload your CSV file using the file import control

  2. 2

    Select the specific columns to truncate from the column dropdown or list

  3. 3

    Set the truncation length, choose the truncation side (left or right), and specify a truncation symbol if needed

  4. 4

    Download the truncated CSV, copy it to the clipboard, or export it via the provided output buttons

Is it right for you

Best for

Developers, analysts, and data managers who need to quickly trim verbose text fields in large CSV datasets to meet character limits without altering the rest of the file structure.

Limitations

  • Results are estimates based on character count; multi-byte characters may behave differently
  • No built-in unit switching between metric and imperial measurements
  • The tool processes one file at a time; batch processing is not supported
Questions

Truncate CSV Columns FAQ

Can I truncate only part of a CSV file, such as specific rows?
The tool applies truncation to every row in the uploaded file for the columns you select; it does not support row-level filtering or selective processing.
What happens if my CSV uses different encodings or special characters?
The tool clips values based on character count; multi-byte or special characters are counted as single characters, but results may vary depending on the file's encoding.
Is there a maximum file size I can upload?
The material does not specify a file size limit; users should consult the site's current upload guidelines for any restrictions.
Can I undo the truncation after downloading the file?
Once the file is downloaded and saved, the original long values are replaced; the tool does not retain original data or provide an undo function within the interface.
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