Trim Whitespace

Trim leading and trailing spaces, tabs, and blank lines from any text snippet before pasting it into forms or code.

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Use this free tool to remove leading and trailing whitespace from text.

About the Trim Whitespace Tool

The tool strips whitespace characters (spaces, tabs, line breaks) at the beginning or end of a string so your data passes strict validators and looks clean in UI surfaces.

How the whitespace trimmer works

The tool makes two passes, entirely in your browser. First it normalizes line endings: every CRLF and every lone CR is rewritten as a single LF, so Windows and classic Mac text follow one convention. Then a single regular expression, /^\s+|\s+$/, strips whitespace from the very start and very end of the whole string — the anchors are not multiline, so blank lines and indentation inside the text survive untouched. JavaScript's \s class covers spaces, tabs, newlines, form feeds, non-breaking spaces (U+00A0) and the byte-order mark, but not the zero-width space U+200B, which remains.

Why Teams Use This Cleaner

Prevents invisible spaces from breaking logins, promo codes, or CSV imports.
Works on multi-line strings and removes empty lines at the top or bottom.
Runs offline so secrets and credentials never leave your device.

How to Trim Whitespace

1

Paste the text that contains unwanted leading or trailing spaces—copied from PDFs, CMS exports, or code editors.

2

Run the tool to clean it instantly in your browser; interior whitespace stays untouched.

3

Review the preview to confirm the string starts and ends exactly where you expect.

4

Copy the trimmed output back into your form field, API payload, or spreadsheet cell.

Common Mistakes

Expecting interior whitespace to change—this tool only targets the start and end of the text.
Pasting formatted HTML; use plain text mode to avoid hidden tags that look like spaces.
Forgetting to trim before generating hashes or signatures, leading to mismatches.

See also

  • Remove Line Breaks — Trimming only touches the two ends of the text, so use this when the line breaks you want gone are inside the paragraph.
  • Remove Duplicate Lines — Once the edges are clean, run the list or log through here to drop repeated lines before importing it.

FAQ

Does it remove tabs and newlines too?

Yes, any whitespace at the beginning or end of the string is removed, including tabs, spaces, and blank lines.

Will it change spacing inside the text?

No. Interior spacing is preserved so sentences remain exactly as written.

Is there a character limit?

You can trim long code blocks or transcripts instantly—the tool runs entirely in memory.

Is the text uploaded anywhere?

No, processing happens locally in your browser.