Загрузка инструмента...
Add sequential line numbers to text for reference and debugging. Free online line number adder for code and document formatting.
Строка Число Добавить is a free online текст tool that works right in your browser — whatever you enter is processed locally and never sent to a server. No installation, no signup; works on both phone and desktop, ready to use instantly.
Текстовые инструменты поддерживают обработку больших файлов: файлы более 1 МБ автоматически используют Web Workers для плавной работы. Определение кодировки и пакетные операции включены.
We noticed many online text tools send your content to remote servers for processing. Since privacy is our core principle, we built this tool to handle everything locally — your text stays on your device.
Data entry clerks and operations staff processing lists from customers, vendors, or internal forms. Instead of scrolling through rows and fixing each one by hand, paste the whole batch here and apply the same change to every line instantly.
Да, полностью бесплатный и без регистрации.
Да, работает в мобильных браузерах с поддержкой касания.
Текст
Для очень больших текстов (более 1 МБ) инструменты используют Web Worker для фоновой обработки, поэтому интерфейс остаётся отзывчивым.
ToolPure supports UTF-8, UTF-16, ASCII, and Base64 encoding/decoding. The tools also support URL encoding, HTML entity encoding, and hex encoding for special characters.
The text tools can handle documents up to 5MB in size (approximately 5 million characters). Word count, character count, and line count update in real-time as you type or paste content.
Yes, the find and replace tool supports full regex syntax including capture groups, lookahead, and lookbehind. You can also perform case-sensitive or case-insensitive replacements with match highlighting.
Yes. Строка Число Добавить is a pure front-end tool: whatever you type or paste is processed only in your browser's memory and never sent to a server. It disappears as soon as you refresh or close the page.
🔒 Privacy & Security：All processing happens locally in your browser. Files are never uploaded or stored.
🔒 Privacy: All processing happens locally in your browser. Your files and data never leave your device — no upload, no server, no tracking.