᠎᠎᠎          
51K

TSV Column Prepender

World's simplest tsv tool
Simple and free online TSV column prepender. Just paste a Tab Separated Values file into the form below, enter the columns to prepend in the options, and the tool will add those fields before the first column of each row. You can prepend one column or several tab-separated columns at once, remove blank and commented rows, and choose how missing TSV fields should be handled. Created by programmers from team Browserling.
announcement new tools!
We just launched a new tools category – Online WebP Tools – utilities for working with WebP images. Check it out!
A link to this tool, including input, options and all chained tools.
Import from file
Save as...
Copy to clipboard
Download
Export to Pastebin
Can't convert.
An error has occured.
Chain with...
Remove chain
Save as...
Copy to clipboard
Download
Export to Pastebin
Remove no tools?
This tool cannot be chained.
Columns to Prepend
Enter one or more TSV columns to place before the current first column.
For one new column, enter one value per line. For multiple columns, separate values with tab characters on each line.
For example: Country ⇥ Currency France ⇥ EUR Japan ⇥ JPY
Missing TSV Fields
Set what happens when TSV rows do not have matching numbers of fields.
Use this value when filling missing TSV fields in custom fill mode.
TSV Cleanup
Rows beginning with this marker are skipped.
Skip blank TSV rows before prepending columns.

What is a TSV Column Prepender?

learn more about this tool
This online tool prepends one or more columns to a Tab Separated Values (TSV) table. Prepending columns means adding new fields at the beginning of each row, before the current first column, while keeping the existing TSV data in the same row order. The original cells are not rewritten or reordered; they are shifted to the right to make room for the new leading columns. In the "Columns to Prepend" option, enter the values that should be added to the left side of the table. To prepend a single column, enter one value for each input row. To prepend multiple columns, enter one row of tab-separated values for each input row. If the original TSV and the columns being prepended do not have matching field counts, you can keep rows as they are, skip incomplete rows, use empty fields, or fill missing fields with a custom value. The cleanup options can remove blank TSV rows and skip comment rows that begin with a selected marker, such as "#" or "//". To add fields after the last column, use our Append TSV Columns tool, and to place fields at a specific position, use our Insert TSV Columns tool. Tsv-abulous!

TSV Column Prepender examples

Click to use
Prepend a Library Branch Column
In this example, we prepend one new column to a TSV library catalog. The original table has "genre", "shelf", and "books" columns. In the options, we enter one "branch" value for each row. The tool adds the "branch" column before the current first column and shifts the original TSV fields to the right.
genre shelf books fiction A1 120 history B4 85 science C2 64
branch genre shelf books Central fiction A1 120 West history B4 85 East science C2 64
Required options
These options will be used automatically if you select this example.
Enter one or more TSV columns to place before the current first column.
Set what happens when TSV rows do not have matching numbers of fields.
Use this value when filling missing TSV fields in custom fill mode.
Rows beginning with this marker are skipped.
Skip blank TSV rows before prepending columns.
Prepend Garden Plant Columns
In this example, we extend a TSV plant list by placing two new columns at the far left of the table. In the options, we enter "zone" and "sun" values for each plant row. As a result, the original "plant", "color", and "height" fields move to the right, and the new "zone" and "sun" fields appear before them.
plant color height rose red 80cm iris purple 45cm mint green 30cm
zone sun plant color height front full rose red 80cm side partial iris purple 45cm back shade mint green 30cm
Required options
These options will be used automatically if you select this example.
Enter one or more TSV columns to place before the current first column.
Set what happens when TSV rows do not have matching numbers of fields.
Use this value when filling missing TSV fields in custom fill mode.
Rows beginning with this marker are skipped.
Skip blank TSV rows before prepending columns.
Prepend Days to a Workout TSV
In this example, we prepend one "day" column to a TSV workout list. Before adding the new column, the tool removes the empty row and skips the "// old plan" comment row. There are four workout rows left, but only three "day" values are provided in the options, so the missing day is filled with the custom value "no-day".
move sets level squats 3 medium plank 2 easy lunges 4 hard // old plan pushups 3 medium
day move sets level Monday squats 3 medium Tuesday plank 2 easy Friday lunges 4 hard no-day pushups 3 medium
Required options
These options will be used automatically if you select this example.
Enter one or more TSV columns to place before the current first column.
Set what happens when TSV rows do not have matching numbers of fields.
Use this value when filling missing TSV fields in custom fill mode.
Rows beginning with this marker are skipped.
Skip blank TSV rows before prepending columns.
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/prepend-tsv-columns?input=genre%09shelf%09books%0Afiction%09A1%09120%0Ahistory%09B4%0985%0Ascience%09C2%0964&insert-column=branch%0ACentral%0AWest%0AEast&incomplete-format=leave-incomplete&custom-value=N%2FA&remove-comments=false&comment-character=%23&remove-empty-lines=false
All tsv tools
Didn't find the tool you were looking for? Let us know what tool we are missing and we'll build it!
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.
Sort TSV Columns
Quickly sort TSV data by selected column values.
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.
Analyze TSV
Quickly inspect the structure and contents of a TSV file.
Validate TSV
Quickly check a TSV file for errors and report them.
Test TSV
Quickly test tab-separated data for row and field problems.
Find Incomplete TSV Values
Quickly locate missing and blank cells in TSV data.
Coming soon These tsv tools are on the way
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 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
51K
@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!
Secret message
If you love our tools, then we love you, too! Use coupon code TSVLING to get a discount at Browserling.
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.