Is my text sent anywhere?

No. Processing happens entirely on your device.

Does this affect whitespace in the middle of a line?

No — only leading and trailing whitespace on each line is removed; internal spacing is untouched.

Processed locally — your file never leaves your device

Trim leading and trailing whitespace from every line of text — entirely in your browser.

Text

Paste text, or open a file.
Click Trim whitespace.
Copy or download the result — leading/trailing whitespace on each line is removed.

Is my text sent anywhere?: No. Processing happens entirely on your device.
Does this affect whitespace in the middle of a line?: No — only leading and trailing whitespace on each line is removed; internal spacing is untouched.