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001 / PDF EDITING TOOLS

100% Local • Zero Servers

Add text, folios, signatures, and watermarks to your PDF document:

100% SECURE • ZERO SERVERS

How local file processing works

Learn about the workflow, practical tips, data protection, and frequently asked questions.

1. How to edit PDF files step by step

Paso 01

Select desired tool or upload your PDF document.

Paso 02

The viewer loads pages and editing layers into local memory.

Paso 03

Add text, folios, signatures, watermarks or apply OCR as needed.

Paso 04

Save changes and download your edited PDF with maximum resolution.

2. Limitations & useful tips

WHAT YOU CAN DO

•Add new text, handwritten signatures, and sequential page numbering.
•Apply security watermarks and vector notarial stamps.
•Optical character recognition (OCR) to make text selectable.
•Preserve vector fonts and original layout without lossy compression.

RECOMMENDED TIPS

→Use transparent PNG images for sharper, professional digital signatures.
→Verify page orientation and range before numbering large dossiers.
→Use modern browsers for maximum vector editing and rendering performance.
→All processing completes 100% locally in your browser RAM.

3. What happens to your document when editing it?

100% local processing

Editing occurs strictly inside your browser RAM. Zero bytes or confidential data leave your device.

Security & confidentiality

Your contracts, invoices, and signatures remain private and protected without trackers.

Direct download

The resulting document generates instantly with professional quality and is ready immediately.

4. Frequently Asked Questions

Q: Do added signatures and text preserve vector quality?

Yes. All texts, page numbers, and stamps are embedded as high-precision vectors, ensuring crisp output when printing or zooming.

Q: Are my edited documents saved on any server?

No. All editing runs locally and autonomously in your browser; once you close the tab, all memory buffers are purged immediately.

Q: How does local Optical Character Recognition (OCR) work?

We use in-browser WebAssembly and Tesseract models to extract and recognize text from scanned pages without sending images to the cloud.

Q: Can I customize page numbering with legal or institutional formats?

Yes. You can customize prefixes, suffixes, page placement, font size, family, and page ranges to meet legal filing requirements.

Q: Does watermark removal alter the original PDF text?

No. The algorithm selectively isolates and removes overlay layers while preserving background text and underlying graphics intact.