Cobalt : Image to PDF Maker

Contains ads
Content rating
Everyone
50+
Downloads
Content rating
Everyone
Learn more
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About this app

Unlock the full potential of your documents with Cobalt PDF.

Cobalt PDF is a professional-grade document workstation designed to turn your images and physical paperwork into high-quality, fully customized PDF files.

📸 PRO-GRADE SMART SCANNING


AI Edge Detection: Automatically identify document boundaries for sharp, clean crops.
Perspective Correction: Straighten tilted or skewed images into perfectly flat documents.
Auto-Capture Mode: Point your camera and hold still; Cobalt snaps the photo automatically.
Smart Gallery Import: Batch select multiple photos from your library.

🛠 ADVANCED PDF CUSTOMIZATION


Professional Layouts: Optimize your files with 1-up, 2-up, or 4-up page grids.
Global Page Standards: Full support for A4, Letter, Legal, A3, and custom dimensions.
Granular Margin Control: Adjust Top, Bottom, Left, and Right margins with precision.
Secure Watermarking: Add custom text watermarks with adjustable opacity and watermark patterns with styles.
Smart Page Numbering: Automatically add page numbers in multiple positions.

📂 INTELLIGENT DOCUMENT MANAGEMENT


Modern PDF Dashboard: View all your documents in a sleek, high-performance home screen.
Sticky Search Bar: Find any file instantly without losing your place while scrolling.
Drag-and-Drop Reordering: Easily rearrange your images for the perfect sequence.
Detailed Metadata: See file sizes, page counts, and creation dates at a glance.

🚀 POWERFUL GENERATION ENGINE


Quality Control: Choose between Low, Medium, High, or Max compression levels.
Live Progress Tracking: Stay informed with real-time status updates.
Privacy First: All processing happens locally on your device. Your documents are never uploaded to our servers.

EVERYTHING STAYS ON YOUR PHONE


Scanning, editing, and PDF creation all happen on your device. Your documents are never uploaded.

MAKE THE PDF YOURS


• Page size A4, Letter, Legal, A3 or custom
• Portrait or landscape, 1, 2 or 4 images per page
• Adjustable margins and page numbers
• Watermarks, single or tiled, with your own colour, size and angle
• Choose image quality to balance file size against sharpness

KEEP IT PRIVATE


Lock a document with a password. Without it, the file will not open — not in Cobalt, not anywhere else.

STAY ORGANISED


Name your documents, add a description and tag them. Filter the library by tag, or search across names, descriptions, and tags at once.

DO SOMETHING WITH IT


Open, share, print, or save a copy anywhere on your device.

No account. No sign-up.

Download Cobalt PDF today and experience the ultimate image-to-PDF workflow.
Create professional PDFs in seconds. Smart scanning, custom layouts & watermarks
Updated on
Sep 22, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Location, App activity and 2 others
  • This app may collect these data types
    Location, App activity and 2 others
  • Data is encrypted in transit
  • Data can’t be deleted

What’s new

• Lock a PDF with a password
• Crop pages — free or fixed ratios (A4, 1:1, 4:3, 16:9)
• Print straight from the app
• Save a copy anywhere on your device
• Add descriptions and tags, then filter by tag
• Search now covers names, descriptions, and tags
Content rating
Everyone
Learn more

App support

Phone number
+94772062795
About the developer
Hegal Kandage Dinuwan Bhagya Fernando
toolsnod@gmail.com
Sri Lanka

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