Add text or image watermarks to PDF pages. Free online tool to brand and protect documents in your browser.
PDF Marca de agua is a free online herramientas pdf 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.
Todo el procesamiento de PDF se ejecuta completamente en tu navegador, sin subir archivos a ningún servidor. Impulsado por WebAssembly y APIs modernas del navegador, ofrece velocidad de escritorio mientras mantiene tus documentos privados.
We noticed most online PDF tools require uploading sensitive documents to remote servers. Since privacy is our core principle, we built our PDF suite to process everything locally in your browser — your files never leave your device.
Researchers and students compiling readings and assignments into a single file. Gathering papers, slides, and notes into one PDF makes them easier to carry, annotate, and submit — and it all happens on your device.
Sí, completamente gratuita y sin registro.
Sí, funciona en navegadores móviles con soporte táctil.
Herramientas PDF
No. Todo el procesamiento de PDF ocurre localmente en tu navegador. Tus archivos nunca salen de tu dispositivo.
Dado que el procesamiento se ejecuta localmente en tu navegador, el tamaño depende de la memoria de tu dispositivo. Los PDF menores a 100 MB generalmente se procesan sin problemas.
Yes. ToolPure uses lossless merging — the output PDF preserves original resolution, color depth, and embedded fonts. All processing happens locally in your browser, so your documents never leave your device.
You can merge up to 50 PDF files in a single operation, with each file up to 2GB. Files are processed in the order you add them, and you can drag to reorder before merging.
The tools support PDF versions 1.0 through 2.0 (ISO 32000-2), including PDF/A archival standard. Encrypted PDFs require the correct password for processing.
Yes. PDF Marca de agua 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.
PDF Marca de agua is a free alternative to the following paid tools — see the full comparison: