Comprendre les filigranes PDF et les caviarder en toute conformité
Remove draft stamps and sanitize sensitive numbers locally without server uploads.
Draw whiteout masks directly on page canvases.
Três passos simples para criar seu documento
- Upload and confirm: Select PDF and confirm lawful use.
- Draw masks: Cover watermarks with white rectangles.
- Multi-page review: Navigate pages and undo if needed.
- Export clean PDF: Save the clean document instantly.
Legal Guidelines: Lawful vs Unlawful
Guidelines regarding watermark redaction and copyright compliance:
| Scenario | Status | Action |
|---|---|---|
| Draft stamps on company contracts | Lawful | Permissible |
| Redacting tax IDs, SSNs, bank info | Recommended | Protects privacy |
| Removing copyright notices | Unlawful | Do not redact |
| Public domain document stamps | Lawful | Permissible |
Why Canvas Redaction Is Secure
Visual redaction bakes whiteout masks directly into pixels so hidden text cannot be copied.
Prevents hidden layer extraction in Adobe Acrobat.
Guarantees complete removal of covered data.
Perguntas frequentes
It is completely legal when you own the document, have written consent from the author, or are redacting internal draft stamps and confidential numbers from your business records. Removing watermarks from copyrighted third-party works without authorization violates copyright law.
No. Our in-browser tool applies secure whiteout redaction boxes over the watermark on each page and re-renders clean high-DPI pages. This guarantees that underlying text or stamps cannot be recovered by inspecting raw PDF streams.
Never. Every page is rendered and rebuilt inside your browser memory using PDF.js and jsPDF. Your document never leaves your machine.
Yes. You can cycle through multi-page PDF documents page by page, draw separate whiteout redaction masks on each page, and export the complete sanitized document in one click.
Dica prática
Antes de enviar anexos importantes por e-mail, reúna tudo em um arquivo PDF A4 com margens de 10 mm. Você evita filtros de spam, mantém a sequência certa das folhas e garante uma impressão perfeita.