Cobalt : Image to PDF Maker
NOD TOOLS Productivity Contains ads
Create professional PDFs in seconds. Smart scanning, custom layouts & watermarks
- Downloads
- 50+
- on Google Play
- Price
- Free
- No in-app purchases
- Updated
- Sep 22
- 2026 Β· v2.0.1
Screenshots
About Cobalt : Image to PDF Maker
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.
πΈ PRO-GRADE SMART SCANNING
β’ AI Edge Detection: Automatically identify document boundaries for sharp, clean crops.
β’ Perspective Correction: Straighten tilted or skewed images into perfectly flat documents.
β’ Auto-Capture Mode: Point your camera and hold still; Cobalt snaps the photo automatically.
β’ Smart Gallery Import: Batch select multiple photos from your library.
π ADVANCED PDF CUSTOMIZATION
β’ Professional Layouts: Optimize your files with 1-up, 2-up, or 4-up page grids.
β’ Global Page Standards: Full support for A4, Letter, Legal, A3, and custom dimensions.
β’ Granular Margin Control: Adjust Top, Bottom, Left, and Right margins with precision.
β’ Secure Watermarking: Add custom text watermarks with adjustable opacity and watermark patterns with styles.
β’ Smart Page Numbering: Automatically add page numbers in multiple positions.
π INTELLIGENT DOCUMENT MANAGEMENT
β’ Modern PDF Dashboard: View all your documents in a sleek, high-performance home screen.
β’ Sticky Search Bar: Find any file instantly without losing your place while scrolling.
β’ Drag-and-Drop Reordering: Easily rearrange your images for the perfect sequence.
β’ Detailed Metadata: See file sizes, page counts, and creation dates at a glance.
π POWERFUL GENERATION ENGINE
β’ Quality Control: Choose between Low, Medium, High, or Max compression levels.
β’ Live Progress Tracking: Stay informed with real-time status updates.
β’ 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
β’ Page size A4, Letter, Legal, A3 or custom
β’ Portrait or landscape, 1, 2 or 4 images per page
β’ Adjustable margins and page numbers
β’ Watermarks, single or tiled, with your own colour, size and angle
β’ 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 β 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.
Cobalt PDF is a professional-grade document workstation designed to turn your images and physical paperwork into high-quality, fully customized PDF files.
πΈ PRO-GRADE SMART SCANNING
β’ AI Edge Detection: Automatically identify document boundaries for sharp, clean crops.
β’ Perspective Correction: Straighten tilted or skewed images into perfectly flat documents.
β’ Auto-Capture Mode: Point your camera and hold still; Cobalt snaps the photo automatically.
β’ Smart Gallery Import: Batch select multiple photos from your library.
π ADVANCED PDF CUSTOMIZATION
β’ Professional Layouts: Optimize your files with 1-up, 2-up, or 4-up page grids.
β’ Global Page Standards: Full support for A4, Letter, Legal, A3, and custom dimensions.
β’ Granular Margin Control: Adjust Top, Bottom, Left, and Right margins with precision.
β’ Secure Watermarking: Add custom text watermarks with adjustable opacity and watermark patterns with styles.
β’ Smart Page Numbering: Automatically add page numbers in multiple positions.
π INTELLIGENT DOCUMENT MANAGEMENT
β’ Modern PDF Dashboard: View all your documents in a sleek, high-performance home screen.
β’ Sticky Search Bar: Find any file instantly without losing your place while scrolling.
β’ Drag-and-Drop Reordering: Easily rearrange your images for the perfect sequence.
β’ Detailed Metadata: See file sizes, page counts, and creation dates at a glance.
π POWERFUL GENERATION ENGINE
β’ Quality Control: Choose between Low, Medium, High, or Max compression levels.
β’ Live Progress Tracking: Stay informed with real-time status updates.
β’ 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
β’ Page size A4, Letter, Legal, A3 or custom
β’ Portrait or landscape, 1, 2 or 4 images per page
β’ Adjustable margins and page numbers
β’ Watermarks, single or tiled, with your own colour, size and angle
β’ 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 β 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.
What’s new
Version 2.0.1 Β· Updated September 22, 2026
β’ Lock a PDF with a password β’ Crop pages β free or fixed ratios (A4, 1:1, 4:3, 16:9) β’ Print straight from the app β’ Save a copy anywhere on your device β’ Add descriptions and tags, then filter by tag β’ Search now covers names, descriptions, and tags
User reviews
Good app π±π°
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