オンラインでPDFに透かしを追加 | カスタムテキスト透かしを追加

Watermark PDF Online | Add Custom Text Watermarks Work on the go with the Smallpdf Mobile App . Get app Tools Compress Compress PDF Convert PDF Converter AI PDF AI PDF Assistant Chat with PDF AI PDF Summarizer Translate PDF AI Question Generator Organize Merge PDF Split PDF Rotate PDF Delete PDF Pages Extract PDF Pages Organize PDF View & Edit Edit PDF PDF Annotator PDF Reader Number Pages Crop PDF Redact PDF Watermark PDF PDF Form Filler Share PDF Convert from PDF PDF to Word PDF to Excel PDF to PPT PDF to JPG Convert to PDF Word to PDF Excel to PDF PPT to PDF JPG to PDF PDF OCR HTML to PDF TXT to PDF RTF to PDF ODT to PDF Sign Sign PDF Request Signatures (Sign.com) More Unlock PDF Protect PDF Flatten PDF Scan PDF Scanner Compress Convert Merge Edit Sign AI PDF Pricing Teams Log In Free Trial Home › Watermark PDF Protect and Personalize Your PDFs with Watermarks Mark a document as confidential, prevent unauthorized use, or brand it with your company name. Our Watermark PDF tool makes it easy to add custom text watermarks with the font, color, and style you need in just a few clicks. Add Custom Watermarks in Seconds Add your own text and style it with custom fonts, sizes, colors, and opacity. No design software or technical skills needed to make it look great. Protect Your Content Mark your PDFs to prevent unauthorized use and ensure credit for your work. A clear, visible watermark makes ownership and permission levels clear. Brand with Ease Add your company or client name to every page for a consistent, professional look. Reinforce brand identity while maintaining a polished, unified look. How To Add a Watermark to PDF Pages Online for Free Drag & drop your PDF into the Watermark PDF tool. Type your watermark text in the input field. Customize the font, size, color, and opacity. Click ‘Finish’ to download or share your watermarked PDF. Why Use Smallpdf to Watermark Your PDFs? Start Immediately—No Fuss Add watermarks directly in your browser with ease. No software downloads. No account signups. No learning curves. Works on Any Device Use the Watermark tool on Mac, Windows, Linux, iOS, or Android. It’s smooth, fast, and works right in your browser. Customize Your Watermark Adjust text, font, size, color, and opacity for a watermark that fits your document—and your brand—perfectly. Protect Sensitive or Confidential Files Clearly label PDFs to avoid unauthorized sharing or misuse. Protect confidential or proprietary information with visible, tasteful watermarks. Consistent Branding Add company names, department labels, or project codes for consistent internal and external sharing. Pick the fonts and colors that match your look. Safe From Start To Finish TLS encryption, GDPR compliance, and ISO certification keep your data secure. Files are auto-deleted after one hour for extra peace of mind. Watermark PDF FAQs What can I use as a watermark? You can add any text to protect or brand your PDF. Labels like “Confidential,” “Draft,” your name, or your company name are popular. But the choice is up to you. Can I add image watermarks? This tool currently supports text watermarks. You can use our Edit PDF tool to insert logos, graphics, or images of any type. Is the Watermark PDF tool free? Yes! You can add text watermarks to PDFs for free. There are some usage limits for free users, but that doesn’t stop you from trying it out. Upgrading to Pro gives you unlimited watermarks and access to over 30 other PDF tools. Will the watermark appear on every page? Yes. By default, the watermark is applied to all pages in your PDF. Is my document secure during the watermarking process? Absolutely. We use TLS encryption for all file uploads and downloads. We also automatically delete all files from our servers after one hour of processing, unless you choose to create an account and save your files on our secure servers.