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Añade números de línea a texto. Herramienta online gratuita en tu navegador.
Línea Número Añadir is a free online texto 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.
Las herramientas de texto soportan procesamiento de archivos grandes: los archivos de más de 1 MB usan automáticamente Web Workers para un funcionamiento fluido sin bloqueos. Incluye detección de codificación y operaciones por lotes.
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.
Sí, completamente gratuita y sin registro.
Sí, funciona en navegadores móviles con soporte táctil.
Texto
Para textos muy grandes (más de 1 MB), las herramientas usan Web Workers para procesamiento en segundo plano, por lo que la interfaz permanece receptiva.
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. Línea Número Añadir 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.