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TSV Validator

World's simplest tsv tool
Simple and free online TSV validator. Just paste a Tab-Separated Values file in the form below, and this tool will inspect it for structural and formatting problems. In the options, you can decide whether comment rows, blank rows, rows with missing cells, leading spaces, and trailing spaces should be reported as TSV errors. Created by programmers from team Browserling.
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TSV Row Validation
Rows that begin with this comment prefix are accepted.
Empty rows are accepted.
Rows that contain fewer cells than other rows are accepted.
Cell Spacing Validation
Whitespace at the start of cell values is accepted.
Whitespace at the end of cell values is accepted.
Error Report Limits
Print no more than this many TSV errors at once.

What is a TSV Validator?

learn more about this tool
This online tool validates Tab Separated Values (TSV) data before you load it into a spreadsheet, database importer, script, or data-cleaning pipeline. A well-formed TSV file contains rows of fields separated by tab characters, and rows that belong to the same table usually have the same number of fields. This validator checks the input for common TSV format problems, such as unclosed quoted fields, rows with missing cells, completely blank rows, comment rows mixed into the data, and cell values that accidentally start or end with extra whitespace. You can decide which row and spacing cases are acceptable for your file: accept comment rows with a custom prefix, accept blank rows, accept rows with fewer cells than the widest row, or accept spaces before and after cell values. When problems are found, the output shows numbered validation errors with a short title, a plain-language message, and the row where each issue was detected. You can also limit how many errors appear in the report, which is useful when a very noisy TSV file has many repeated problems. If the TSV input passes validation, the tool shows a green success message confirming that the format is valid. Tsv-abulous!

TSV Validator examples

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Validate a Coffee Roast TSV
In this example, we validate a small TSV log for coffee roast batches. Each row has the same set of fields: bean name, origin, roast level, and bag size. The file uses tabs between all values and does not contain comments, blank rows, missing cells, or unwanted spacing, so the validator returns a green success message.
bean origin roast grams Typica Guatemala Light 250 Bourbon El Salvador Medium 500 Caturra Colombia Medium 1000 Catuai Costa Rica Medium 1000
In this example, we validate a small TSV log for coffee roast batches. Each row has the same set of fields: bean name, origin, roast level, and bag size. The file uses tabs between all values and does not contain comments, blank rows, missing cells, or unwanted spacing, so the validator returns a green success message.
Required options
These options will be used automatically if you select this example.
Rows that begin with this comment prefix are accepted.
Empty rows are accepted.
Rows that contain fewer cells than other rows are accepted.
Whitespace at the start of cell values is accepted.
Whitespace at the end of cell values is accepted.
Print no more than this many TSV errors at once.
Validate a Plant Care TSV with Notes
In this example, we validate a TSV plant care table that contains comment rows and a blank separator row. We allow rows that begin with "//" and accept blank rows, so they are not reported as errors. However, leading and trailing spaces are not allowed, so the validator reports the padded plant care values that need cleanup.
plant pot water // balcony set Basil 12cm daily Mint 10cm weekly Fern 14cm daily // watering schedule
Error 1 title: TSV Contains Leading Spaces message: The file contains leading spaces. row: 3 Error 2 title: TSV Contains Trailing Spaces message: The file contains trailing spaces. row: 5 Error 3 title: TSV Contains Leading Spaces message: The file contains leading spaces. row: 6
Required options
These options will be used automatically if you select this example.
Rows that begin with this comment prefix are accepted.
Empty rows are accepted.
Rows that contain fewer cells than other rows are accepted.
Whitespace at the start of cell values is accepted.
Whitespace at the end of cell values is accepted.
Print no more than this many TSV errors at once.
Report Errors in a Device Test TSV
In this example, we inspect a messy TSV export from a device testing lab. The file contains a comment row, a blank row, a device record with a missing owner value, trailing whitespace after a status value, leading whitespace before a voltage value, and an unclosed quoted value in the final row. We do not limit the number of errors printed in the report, so we can clearly identify every TSV problem and fix it.
device lab voltage state owner # lab devices status D01 L1 5V ok Ana D02 L2 12V fail D03 L3 3V ok Ben D04 L4 9V ok Ira D05 L5 "24V open Leo
Error 1 title: TSV Contains Comments message: The file contains comments starting with "#". row: 2 Error 2 title: TSV Contains Trailing Spaces message: The file contains trailing spaces. row: 3 Error 3 title: TSV Contains Empty Lines message: The file contains empty lines. row: 4 Error 4 title: Incomplete TSV Data message: The file has missing values. row: 5 Error 5 title: TSV Contains Leading Spaces message: The file contains leading spaces. row: 7 Error 6 title: Incomplete TSV Data message: The file has missing values. row: 8 Error 7 title: Missing Quote message: Quoted field is unterminated. row: 8
Required options
These options will be used automatically if you select this example.
Rows that begin with this comment prefix are accepted.
Empty rows are accepted.
Rows that contain fewer cells than other rows are accepted.
Whitespace at the start of cell values is accepted.
Whitespace at the end of cell values is accepted.
Print no more than this many TSV errors at once.
Pro tips Master online tsv tools
You can pass input to this tool via ?input query argument and it will automatically compute output. Here's how to type it in your browser's address bar. Click to try!
https://onlinetsvtools.com/validate-tsv?input=bean%09origin%09roast%09grams%0ATypica%09Guatemala%09Light%09250%0ABourbon%09El%20Salvador%09Medium%09500%0ACaturra%09Colombia%09Medium%091000%0ACatuai%09Costa%20Rica%09Medium%091000&allow-comments=false&comment-char=%23&allow-empty-lines=false&allow-incomplete=false&allow-leading-spaces=true&allow-trailing-spaces=true&limit-errors=true&number-of-errors=10
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Change TSV Delimiter
Quickly change the TSV delimiter to a different symbol.
Generate a Random TSV
Quickly generate random TSV data.
Extract a TSV Column
Quickly extract selected columns from a TSV file.
Delete a TSV Column
Quickly delete selected columns in a TSV file.
Delete TSV Tabs
Quickly remove tabs that go between TSV columns and merge all data.
Quote TSV Columns
Quickly add quotes around TSV columns.
Unquote TSV Columns
Quickly remove quotes that surround TSV columns.
Swap TSV Columns
Quickly swap columns in a TSV file.
Convert TSV to JSON
Quickly convert a TSV file to a JSON data structure.
Convert JSON to TSV
Quickly convert a JSON data structure to TSV format.
Convert TSV to XML
Quickly convert a TSV file to XML markup.
Convert XML to TSV
Quickly convert XML markup to a TSV file.
Convert TSV to YAML
Quickly convert a TSV file to YAML markup.
Convert YAML to TSV
Quickly convert YAML data to a TSV file.
Convert TSV to CSV
Quickly convert TSV data to CSV data.
Convert CSV to TSV
Quickly convert CSV data to TSV data.
Convert TSV to Text Columns
Quickly convert TSV data to nicely aligned text columns.
Convert Text Columns to TSV
Quickly convert text columns to TSV columns.
Base64-encode TSV Data
Quickly convert TSV data to base64 encoding.
Base64-decode TSV Data
Quickly convert base64-encoded TSV data to TSV data.
URL-encode a TSV File
Quickly convert a TSV file to URL-encoding.
URL-decode a TSV File
Quickly convert a URL-encoded TSV file back to TSV.
Prepend TSV Columns
Quickly add one or more columns before the first TSV column.
Append TSV Columns
Quickly append new columns at the end of a TSV file.
Insert a TSV Column
Quickly insert new columns anywhere in a TSV file.
Replace a TSV Column
Quickly replace selected columns in a TSV file.
Trim TSV Columns
Quickly remove extra spaces around TSV columns.
Truncate TSV Columns
Quickly truncate the contents of TSV cells to any length.
Convert TSV Cols to Rows
Quickly exchange TSV columns with rows.
Convert TSV Rows to Cols
Quickly exchange TSV rows with columns.
Transpose TSV
Quickly transpose a TSV file.
Validate TSV
Quickly check a TSV file for errors and report them.
Coming soon These tsv tools are on the way
Display TSV Statistics
Print information about a TSV file.
Calculate TSV Entropy
Find the complexity of a TSV file.
Show TSV Structure
Create an abstract drawing that shows the structure of a TSV.
View and Edit TSV
Show a TSV file in a neat editor and allow easy editing.
Convert TSV to Double-TSV
Convert a TSV file to a double-TSV file.
Convert Double-TSV to TSV
Convert a double-TSV file to a regular TSV file.
Convert TSV to HTML Table
Convert a Tab Separated Values file to an HTML table.
Convert HTML Table to TSV
Convert an HTML table to a Tab Separated Values file.
Convert TSV to Markdown
Convert a TSV file to a Markdown table.
Convert Markdown to TSV
Convert a Markdown table to a TSV file.
Convert TSV to PDF
Convert a Tab Separated Values file to a PDF document.
Convert PDF to TSV
Convert a PDF document to a Tab Separated Values file.
Convert TSV to Image
Draw Tab Separated Values as a table and output it as an image.
Convert Image to TSV
Extract data in an image and format it as a TSV file.
Convert TSV to Excel
Convert a Tab Separated Values file to an Excel spreadsheet.
Convert Excel to TSV
Convert an Excel file to a Tab Separated Values file.
Convert TSV to LaTeX
Convert a TSV file to LaTeX code that generates a table.
Convert TSV to ASCII Table
Convert a Tab Separated Values file to a neat ASCII table.
Convert ASCII Table to TSV
Convert an ASCII table to a Tab Separated Values file.
Convert TSV to SQL
Convert a Tab Separated Values file to an SQL query.
Convert TSV to SQLite
Convert a Tab Separated Values file to an SQLite database.
Convert SQLite to TSV
Export tables from an SQLite database as TSV files.
Convert TSV to PSV
Convert a TSV file to a PSV (Pipe Separated Values) file.
Convert PSV to TSV
Convert a PSV (Pipe Separated Values) file to a TSV file.
Convert TSV to HSV
Convert a TSV file to a HSV (Hash Separated Values) file.
Convert HSV to TSV
Convert a HSV (Hash Separated Values) file to a TSV file.
Convert TSV to SSV
Convert a TSV file to a SSV (Semicolon Separated Values) file.
Convert SSV to TSV
Convert a SSV (Semicolon Separated Values) file to a TSV file.
Convert TSV to 0SV
Convert a TSV file to a 0SV (Null Separated Values) file.
Convert 0SV to TSV
Convert a 0SV (Null Separated Values) file to a TSV file.
Split a TSV File
Create multiple TSV files from the given TSV file.
Merge TSV Files
Merge together two Tab Separated Values files.
Delete Empty TSV Columns
Remove columns that have no values in a TSV file.
Delete Empty TSV Rows
Remove rows that have no values in a TSV file.
Delete Empty TSV Lines
Remove lines in a TSV file that are blank.
Delete TSV Comments
Delete TSV lines that are comments.
Filter TSV Data
Filter rows and columns that match a pattern.
Find Values in TSV
Find certain values in TSV cells.
Find Duplicate TSV Rows
Extract repeated rows in a TSV file.
Merge Duplicate TSV Rows
Combine duplicate rows in a TSV file.
Deduplicate TSV Rows
Remove repeated rows from a TSV file.
Delete Duplicate TSV Rows
Delete duplicate rows from a TSV file.
Compress TSV
Minify a TSV file and remove extra spaces and indentation.
Compare Two TSV Files
Diff two TSV files and visually display the differences.
Rotate TSV Columns
Rotate TSV columns to the left or right.
Rotate TSV Rows
Rotate TSV rows up or down.
Cut a TSV File
Cut a fragment from a TSV file.
Slice a TSV File
Extract a slice (rows/columns/cells) of a TSV file.
Randomize TSV Values
Shuffle all data values in a TSV file.
Randomize TSV Columns
Shuffle the order of TSV columns.
Randomize TSV Rows
Shuffle the order of TSV rows.
Sort TSV Columns
Sort values in a TSV column.
Sort TSV Rows
Sort values in a TSV rows.
Count TSV Columns
Find how many columns there are in the given TSV data.
Count TSV Rows
Find how many rows there are in the given TSV data.
Count TSV Entries
Find how many total entries there are in a TSV file.
Color a TSV File
Add colors to TSV data for easy visual overview of the file.
Add Errors to TSV
Create random errors in a TSV file for fuzz testing.
Create a Custom TSV
Generate a custom TSV with n rows and m columns.
Open a TSV File
Open a TSV file directly in your browser.
Created with love by
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@browserling
We're Browserling — a friendly and fun cross-browser testing company powered by alien technology. At Browserling, we love to make developers' lives easier, so we created this collection of online TSV tools. Unlike many other tools, we made our tools free, without ads, and with the simplest possible user interface. Our online TSV tools are actually powered by our programming tools that we created over the last couple of years. Check them out!
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Privacy Policy we don't log data!
All conversions and calculations are done in your browser using JavaScript. We don't send a single bit about your input data to our servers. There is no server-side processing at all. We use Google Analytics and StatCounter for site usage analytics. Your IP address is saved on our web server, but it's not associated with any personally identifiable information. We don't use cookies and don't store session information in cookies. We use your browser's local storage to save tools' input. It stays on your computer.
Terms of Service the legal stuff
By using Online Tsv Tools you agree to our Terms of Service. TLDR: You don't need an account to use our tools. All tools are free of charge and you can use them as much as you want. You can't do illegal or shady things with our tools. We may block your access to tools, if we find out you're doing something bad. We're not liable for your actions and we offer no warranty. We may revise our terms at any time.