Remove a Prefix from Text
Remove a prefix from the start of every line. Runs entirely in your browser, so your data never leaves your device.
0 chars · 0 lines
Output
The result appears here as you type.
How to use Remove a Prefix from Text
- 1. Paste the lines with the unwanted prefix. Enter text where every line starts with a repeated marker, such as quoted email replies or commented-out code you want to reactivate.
- 2. Set the Prefix to remove. Type the exact text currently sitting at the start of every line, such as a quote marker or comment symbol, so the tool knows exactly what to strip.
- 3. Turn on Remove the prefix repeatedly. Enable this option when lines have the prefix stacked multiple times, such as several levels of email quoting, so every repeated layer gets stripped in one pass.
- 4. Copy the cleaned lines. Copy the result into your editor or document now that the leading marker is gone from every line.
When to use Remove a Prefix from Text
Remove a Prefix from Text removes a repeated marker from the start of every line, undoing quoting, commenting, or tagging that was applied uniformly across a block. Use it to un-quote an email thread, uncomment a block of code, or strip a line-numbering prefix before reusing the text elsewhere.
- Un-quoting a deeply nested email thread. An email reply has several layers of '>' quoting stacked from being forwarded multiple times. Removing the prefix repeatedly strips every layer down to the original plain message.
- Reactivating a commented-out block of code. A block of code was commented out with a leading hash symbol on every line and now needs to run again. Removing that prefix from each line restores it to active code.
- Stripping line numbers pasted from an editor. Code copied from an editor with line numbers displayed brought the numbers along as a prefix on every line. Removing that prefix restores clean, pasteable code.
- Cleaning a log export with a repeated timestamp prefix. A log export adds the same fixed-width timestamp format to the start of every line, but you only need the message content for a separate analysis step.
Examples
Unquote every line
Input
> one > two
Output
one two
About the Remove a Prefix from Text tool
Remove a Prefix from Text is a free online tool that works entirely inside your web browser. Remove a prefix from the start of every line. Because the processing happens on your own device, nothing you enter is uploaded, logged or stored anywhere.
This page is one of 211 Text utilities on EditSafely. Each one does a single job well, and all of them follow the same rule: your input stays on your machine.
You can shape the output with 2 settings, including Prefix to remove and Remove the prefix repeatedly, and the result refreshes the moment you change one. A worked example further down the page shows exactly what the tool produces for a real input.
Because nothing leaves your device, the tool is suitable for sensitive content such as internal documents, credentials or customer data. It also responds instantly, since every keystroke is handled on your own machine rather than by a remote API.
Frequently asked questions
Is Remove a Prefix from Text free to use?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.