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Select Every Nth Line

Select periodic lines using a one-based starting position.

◇ Browser only

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LESS BUSYWORK, MORE DONE

Three steps. That’s it.

A useful toolkit for text, data, images and calculations.

01
Add your input
Choose a tool, enter values or select a file.
02
Make it yours
Adjust the options and run the action.
03
Take the result
Copy the result or download its file.

Periodic line selector online

Select periodic lines using a one-based starting position. Use this when inspecting or preparing text and structured data. Test the included sample first, then replace it with a small representative part of your own input.

How to use it

Paste your input. Review step, starting line. Choose Run tool and review the result. Copy or download the output when it matches your requirements.

Options and example settings

Option	Choices / value	Example default
Step	Enter a value for step.	2
Starting line	Enter a value for starting line.	1

Worked examples

Use this when inspecting or preparing text and structured data. Test the included sample first, then replace it with a small representative part of your own input.

Reproducible sample

Settings: Step: 2; Starting line: 1

Input:

a
b
c
d
e
f

With the settings above, the output is:

Output:

a
c
e

The example output has 3 lines. Compare its order, separators and whitespace with the input before copying the result.

Limitations and common mistakes

Results reflect the supplied input and selected options; review the example and output before using it.
Inputs are limited to 250,000 characters in total. Invalid input is reported rather than silently corrected.

Frequently asked questions

How can I check the result?

Run the fixed worked example with the documented settings, compare its output, then check your own input format and units before copying a result.

Does this require an account?

No. This bundled tool runs in your browser without a conversion account.

How can I select every nth text line online?

Paste your input. Review step, starting line. Choose Run tool and review the result. Copy or download the output when it matches your requirements.

Where is my input processed?

The bundled tool processes input in your browser. It does not upload tool input to a conversion service. Other site plugins, analytics, advertising and browser extensions may have separate behavior.