Choose both sides, left only, or right only and clean line-edge whitespace without changing internal content.
Text cleanup runs locally in your browser. These tools operate on plain text lines; structured CSV/JSON/XML and regex workflows remain in their dedicated tools.
Measure leading/trailing whitespace removed per line with changed-line counts, byte savings and blank-line preservation evidence.
Left/right/both controls remove edge whitespace only; the workflow audit exposes byte changes and no-op cases.
Use output as input only when the preview is what you intended. Restore returns to the page-load sample, and the before/after audit remains local to your browser.
Use the tool first, then apply these checks to verify the inputs, interpret the result, and hand it off without displacing the primary workflow.
Trimming line edges removes leading or trailing whitespace on each line while preserving the text inside the line. Tabs, spaces, and other whitespace can carry meaning in code, fixed-width data, or Markdown. Inspect a representative sample before applying the output to structured text.
Right-only trimming is useful for trailing-space cleanup while preserving indentation. Left-only trimming removes indentation and may change nested or code-like structures. Both sides is best for plain lists and pasted labels. Match the mode to the text semantics instead of defaulting to the strongest cleanup.
A trim operation should not normally create or remove logical lines. If the downstream workflow depends on row positions, compare line count and blank-line placement as well as visible text. Unexpected line changes often come from another cleanup step rather than trimming itself.
Logs, source code, diffs, and imported data can use whitespace to explain what went wrong. Save or copy the untouched input before cleanup when the exact original may be needed later. A normalized result is easier to use but weaker as forensic evidence.
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