Download PDF24 Creator (or bookmark Online-Convert.com) and convert your first PDF to TNS in under 60 seconds. Disclaimer: All product names, trademarks, and registered trademarks are the property of their respective owners. All free tools mentioned are available as of 2025. Always scan downloaded software with antivirus.
| Use Case | Color Mode | Compression | DPI (Resolution) | Multi-Page? | | :--- | :--- | :--- | :--- | :--- | | | Black & White | CCITT Group 4 | 300 DPI | Yes (single TNS) | | Medical image (X-ray/scan) | Grayscale | LZW | 600 DPI | Per page | | Colored brochure | 24-bit RGB | JPEG (80% quality) or LZW | 300 DPI | Yes | | Old fax system | Black & White | CCITT Group 3 | 200 DPI | Yes (single TNS) | | OCR preparation | Black & White | CCITT Group 4 | 300 DPI | Per page |
IrfanView is a tiny (under 5 MB) image viewer that packs a punch. With the optional , it becomes a PDF to TNS powerhouse.
But what happens when you need to convert a PDF into a TNS file, and your budget is zero? You search for a .
A: You likely selected “Black & White” but your PDF contains light grayscale text. Switch to “Grayscale” or increase DPI to 600 before converting.
In the digital documentation world, file formats are the silent gatekeepers of compatibility. While PDF (Portable Document Format) reigns supreme for sharing and reading, the TNS format—more commonly known as TIFF (Tagged Image File Format, using the .tif or .tns extension in some legacy systems)—is the gold standard for high-resolution scanning, medical imaging, archiving, and professional printing.
A: Simply rename the file. Right-click file.tif → Rename → file.tns . The software will not know the difference.
GIMP is a Photoshop alternative. While it can’t natively save multi-page TIFF, you can convert PDF to TNS one page at a time for free.