A full-featured browser text editor with line numbers, character wrap, split panes, inline text compare, find & replace, syntax highlighting, undo/redo, and local autosave. No signup, no uploads.
Also searched as: online text editor · text editor with line numbers · browser text editor · free online notepad
Toolbar & panels
Step-by-step guide to get the most from this tool
Paste text, type in the editor, or open a plain-text file from your device.
Use line numbers, hard wrap, find/replace, go-to-line, undo/redo, and optional split or compare panes.
Drafts store in localStorage on this browser — nothing is sent to our servers.
Save as .txt with LF or CRLF line endings via the download / Ctrl+S shortcut.
What makes this tool stand out
Gutter with line numbers and go-to-line navigation.
Wrap long lines to a width you choose; unwrap restores prior text.
Second pane plus inline red/green diff highlighting.
Search bar with Prev/Next and replace controls.
Debounced localStorage drafts — private to your browser.
Open plain text; download with LF or CRLF endings.
What happens under the hood — and how to use it well
An online text editor with line numbers is for quick drafts, notes, and plain-text code when you do not want to open a desktop IDE. This one runs fully in the browser: no account, no upload, and autosave that stays on your device. It is built on Tool Reign’s shared editor kit so behavior matches other text tools on the site (find, wrap, download) without leaving the page.
The gutter shows line numbers so you can jump with go-to-line. Hard wrap folds long lines to a character width you set; unwrap restores the pre-wrap text. Undo and redo cover everyday edits, and syntax highlighting helps when the content looks like code or markup. Duplicate line, delete line, and move-line shortcuts speed up cleanup of pasted logs or CSV snippets.
Split panes let you keep two buffers visible. Compare highlights differences with the same red/green style as Diff Checker. Find and replace (with Prev/Next) works when you need targeted edits without leaving the page. Focus matters: toolbar actions apply to whichever pane is active, so you can edit left while reviewing right.
Autosave writes to localStorage only — useful for recovering a draft after a closed tab, and private because nothing is posted to Tool Reign servers. Open plain-text files from disk and download with LF or CRLF line endings for the OS you target. Closing the browser does not send your draft; clear site data if you used a shared machine. Prefer downloading sensitive notes rather than leaving them in localStorage on a public PC.
Use this editor when you need a working buffer with line numbers and shortcuts. Switch to Diff Checker for a dedicated two-document compare, Find and Replace for a one-shot bulk replace workflow, or Markdown Editor when you need live Markdown preview. Word Counter remains the right place for read-time and density stats.
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Quick answers to common questions
No. ToolReign Text Editor runs entirely in your browser. Your content is never uploaded. Autosave uses localStorage on your device only.
Yes. Your draft is saved to localStorage every few seconds. When you return, your last autosaved text loads automatically — no button needed.
Yes. A line-number gutter is available so you can navigate long documents and jump to a line with Ctrl+G (Cmd+G on Mac).
Yes. Use Split for a second pane, then Compare for side-by-side red/green diff highlighting (same approach as Diff Checker). Toolbar actions apply to the focused pane.
Ctrl+Z undo; Ctrl+Y or Ctrl+Shift+Z redo; Ctrl+F find; Ctrl+H replace; Ctrl+G go to line; Ctrl+S download; Ctrl+Shift+D duplicate line; Ctrl+Shift+K delete line; Alt+↑/↓ move line; Tab indent; Shift+Tab outdent; Escape close panels. On Mac, use Cmd instead of Ctrl. Expand “Keyboard shortcuts” under the toolbar for the full list.
Open any plain text file: .txt, .md, .json, .html, .css, .js, .ts, .xml, .csv, and more. Download saves as .txt with your chosen line endings (LF or CRLF).
Yes. The editor can highlight common plain-text and code-like content so structure is easier to scan while you edit.
Processing runs in your browser. Your inputs are not sent to our servers.