Find and Replace

Yes. Tick the Regex checkbox and the Find field is treated as a JavaScript regular expression with the global flag applied. Capture groups work too, so you can reference $1 or $2 in the Replace with field to reorder matched pieces.

Enable the Case-insensitive option. It adds the i flag to the underlying pattern, so searching for admin will also match Admin and ADMIN. Leave it off when casing carries meaning, like variable names in code.

You can. The replacement is applied globally in a single pass, and everything happens in your browser's memory, so even a large log dump processes instantly. There's no row limit beyond what your machine can comfortably hold in a textarea.

It adds the m flag, which makes the ^ and $ anchors match at the start and end of each line rather than the whole input. It only matters when Regex mode is on and your pattern uses anchors.

Usually the search term doesn't exist with that exact casing, so try the Case-insensitive option. In plain mode, characters like . and * are escaped and matched literally, which surprises people expecting wildcard behavior. Turn on Regex if you want patterns.

No. The matching and replacement run entirely in your browser with JavaScript, and nothing leaves the page. That makes it safe for customer exports and other data you'd rather not paste into a random server-side tool.

Leave the Replace with field empty and every match is removed. It's a quick way to strip a repeated prefix, a tracking parameter, or boilerplate that appears throughout a document.

An error message appears above the panes and the Result pane falls back to your untouched input. Fix the pattern, an unclosed bracket is the usual culprit, and the preview resumes on its own.

Type the term in the Find field and its replacement in Replace with, and every match swaps out live. To replace word online like this you never press a button; the Result pane updates on each keystroke. As a replace words in text tool it also shows a running match count so you know how many spots changed.

Yes. This runs in the browser, so you find and replace text right on the page with no download and no signup. Paste your content, set Find and Replace with, and the swapped result appears instantly. It handles a single paragraph or a big CSV export the same way.

No, it works on plain text, not PDF files. Copy the text out of the PDF, paste it here, run your replacements, then paste the cleaned text back into your PDF editor. This tool never opens or saves a PDF on its own.

It isn't a PDF editor. If you searched for an online pdf editor replace text workflow, use this for the text step only: paste, replace, and copy the result. Writing changes back into the PDF and saving it needs a dedicated PDF editor, since this tool outputs plain text.

In a focused way, yes. It's more an online text editor and finder for search and replace than a full word processor: you can paste, find, replace, and copy, but there's no formatting or file saving. If you just need an online text editor to swap terms fast, that narrow scope is the appeal.