tsv

.tsvTab-Separated Values

Unknown (de facto standard) · 1980s

Developer
Unknown (de facto standard)
Category
Spreadsheets
MIME Type
text/tab-separated-values
First Released
1980s
Open Format
Yes
File Signature
N/A (Plain text)
At a Glance
.tsv
Tab-Separated Values

TSV files store tabular data, with each line representing a row and values within a row separated by tab characters.

Reviewed on April 28, 2026
Compression
Plain text
Transparency
N/A
Editability
High
Best for
tables and formulas

Key Features

  • Plain text storage behavior for typical spreadsheet workflows
  • Common MIME type: text/tab-separated-values
  • Recognizable file signature: N/A (Plain text)
  • Associated with Unknown (de facto standard)

Best For

  • Structured calculations
  • Business analysis
  • Tabular collaboration

Less Ideal For

  • Rich page-layout publishing
  • Binary media delivery
  • Executable packaging

Common Use Cases

  • Calculations and formulas
  • Reporting and dashboards
  • Budgeting and tabular data

How to Open It

  1. On Windows, open the file with Microsoft Excel or LibreOffice Calc.
  2. On macOS, open the file with Numbers or LibreOffice Calc.
  3. If the file does not open, confirm that the extension really matches .tsv and that the download or transfer completed without corruption.

What is a .tsv file?

TSV files store tabular data, with each line representing a row and values within a row separated by tab characters. This format is widely used for data exchange between different spreadsheet and database programs due to its simplicity and human-readability. It is a plain text format, making it easily processable by scripts and applications.

Programs That Open .tsv Files

PlatformProgram
WindowsMicrosoft ExcelPaidOfficial
LibreOffice CalcFree
Notepad++Free
Excel Viewer (discontinued)FreeOfficial
macOSNumbersFreeOfficial
LibreOffice CalcFree
TextEditFreeOfficial
Microsoft ExcelPaidOfficial

Common Problems with .tsv Files

⚠️ Incorrect delimiter interpretation.
Ensure your software is configured to use tab characters as delimiters, not commas or other characters. Check the file's actual content to confirm the separator.
⚠️ Data corruption or missing values.
Verify that the file was saved correctly in TSV format and that no special characters or formatting caused issues during export or import. Ensure consistent row lengths.
⚠️ Encoding issues leading to unreadable characters.
Open the TSV file in a text editor and try saving it with a different encoding, such as UTF-8, which is widely compatible.

Frequently Asked Questions

What is the main difference between TSV and CSV files?

The primary difference lies in the delimiter used: TSV files use tab characters, while CSV (Comma-Separated Values) files use commas. This makes TSV generally more robust as tabs are less likely to appear within data fields themselves.

Can I open a TSV file with a standard text editor?

Yes, TSV files are plain text and can be opened and read with any standard text editor like Notepad (Windows), TextEdit (macOS), or Vim. However, complex data might be hard to read without specialized software.

Is TSV a good format for data transfer?

Yes, TSV is an excellent format for data transfer due to its simplicity, human-readability, and wide compatibility across various software. Its plain text nature makes it easy to parse and process programmatically.

Technical Details

TSV files are plain text documents. They do not have a specific header signature; instead, the structure is defined by the delimiters (tab characters) and line breaks. The first line typically contains column headers, followed by data rows.

Did You Know?

TSV files are essentially just text files with a specific delimiter (tabs) instead of commas.
Many database systems and data analysis tools prefer or can easily import TSV files for bulk data operations.
Because they are plain text, TSV files are highly resistant to becoming corrupted by minor errors compared to binary formats.

Security Information

TSV files are generally considered safe as they are plain text. However, like any file, if downloaded from an untrusted source, they could potentially be part of a social engineering attack or contain links to malicious websites. Always ensure the source is reputable.

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