Text tools

Add Prefix to Each Line Online

Add the same prefix to every line in a pasted list, with optional empty-line skipping.

No signup: Open the page, paste text, and copy the result without creating an account.
Browser-local: Normal text processing runs in your browser, so pasted text is not sent to a server.
Clean output: Use trim, empty-line cleanup, dedupe, or format options where the tool supports them.
Sample included: Each tool starts with editable sample input so you can verify the behavior first.

Privacy note

Your text is processed in your browser. This tool does not store pasted text on a server.

Lines

Skip empty linesPrefix

Lines with prefix

When this tool helps

Use this tool when every line in a pasted list needs the same beginning text.

It is useful for file paths, tags, command snippets, CMS entries, and list formatting cleanup.

Common cleanup options

Line prefixes

Add tags, paths, bullets, commands, labels, or repeated text before every line.

Blank-line handling

Skip empty lines when the output should preserve visual spacing.

Reverse workflow

Use this with remove prefix, add suffix, trim lines, and custom line joining tools.

Browser processing

The current version runs in your browser and does not require an account.

How to use it

Paste the lines you want to modify.
Enter the prefix to add.
Choose whether to skip empty lines.
Run the tool and copy the updated lines.

Privacy, review, and limitations

The current version processes pasted text in your browser for normal use, and the page explains the tool behavior that is visible in the interface. Review the preview before copying output into another workflow, especially when the source text came from PDFs, spreadsheets, exports, or copied tables.

This tool adds literal text and does not interpret regular expressions.

Review blank-line handling when your input intentionally contains empty rows.

Frequently asked questions

Can I choose the prefix?

Yes. Enter the exact text you want to add before each line.

Can it skip blank lines?

Yes. Keep skip empty lines enabled to avoid changing blank rows.

Is my text uploaded?

No. The current tool processes pasted text in your browser.

Last updated: May 11, 2026

See the tool in action

Screenshot of Add Prefix to Each Line Online showing sample input, selected options, and the generated output — Example workflow: paste sample text, choose the options that match the task, run the tool, then review the output before copying it.

How this page is maintained

This tool page is maintained for practical accuracy, clear limitations, browser-based processing behavior, and links to related cleanup tasks. It is intended for everyday text cleanup, not for legal, medical, financial, security, or other high-stakes decisions.

Browser-local processing

The current tool runs in the browser and does not require an account, upload, or server-side text processing for normal use.

Reviewed behavior

Examples, options, and limitations are checked against the actual tool behavior before public pages are added to the site.

Human review still matters

Text cleanup can miss source-specific issues such as broken words, malformed data, or copied table artifacts, so review important output before reuse.

Site transparency

For site background and policies, see About, Privacy, and Contact.

Safe use checklist

Use sample or non-sensitive text when testing a workflow.
Check the output preview before copying it into another system.
Keep confidential, regulated, or customer data inside approved tools.
Use related tools only when they match the same cleanup task, not to force unrelated edits.

Related tools

Remove prefix from each line

Open

Remove a matching prefix from each line in a pasted list without changing non-matching lines.

Add suffix to each line

Open

Add the same suffix to every line in a pasted list, with optional empty-line skipping.

Trim whitespace from lines

Open

Trim leading and trailing spaces from every line, with optional internal space cleanup.