MarkSure

MarkSure is the fastest and easiest way to add image and text overlays to PDFs and photos directly on your device. Whether you’re protecting business documents, sharing creative work, or adding professional branding, MarkSure helps you secure your content with precision and style — all without uploading your files to the cloud. Why MarkSure? MarkSure is built for speed, privacy, and full control. Everything works offline, so your files never leave your device. The app supports both text and image (logo) overlays, giving you flexibility over placement, size, transparency, and style. Key Features : Add Overlays to PDFs & Photos – Protect any document or image with text or image watermarks. Text & Logo Support – Add text watermarks, company logos, or personal branding. Customization Options – Adjust font, color, size, transparency, and position. Offline & Secure – No internet connection required; your files remain private. Save Drafts – Pause and continue editing without losing your work. Fast Export – Save high-quality, ready-to-share files to your device. Perfect For : Freelancers protecting design work, contracts, and invoices. Photographers adding copyright marks to portfolios. Businesses securing proposals, reports, and sensitive documents. Students and educators marking assignments and research. How It Works : Select your PDF or photo from your device. Choose a text or logo overlay. Customize placement and style. Preview your result in real time. Export the final file instantly. Privacy First. MarkSure never uploads or stores your files online. All processing happens locally on your device for complete data security. Why Add Overlays? Overlays and watermarks protect your intellectual property, deter unauthorized use, and reinforce your brand identity. With MarkSure, you can do it quickly, effectively, and without complicated tools.