TIFF to PDF

Convert TIFFs to PDF

Drop a single- or multi-page TIFF in and get an image-only PDF back. Optionally apply Foxit's MRC (Mixed Raster Content) compression to dramatically shrink the file while keeping text crisp via JBIG2.

Settings

Auto reads the X/Y DPI tag from the TIFF and matches the PDF page size to the source. Pick a fixed DPI to override.
Apply Foxit's Optimizer::OptimizeScannedPDF — splits each page into JBIG2 text/line-art and JPEG/JP2K photo layers. Typical scanned-page reductions are 10×–100×.
Advanced MRC options
33
Higher = larger file with fewer artifacts. Foxit's default is 33. Only meaningful for JPEG and "High" modes.
Applied to text/line-art regions detected by MRC. JBIG2 lossy can silently substitute visually similar digits — leave on lossless unless you know your input is safe.

How it works

The Foxit PDF SDK loads the TIFF via common::Image, walks the frames with GetFrameBitmap(), and for each frame inserts a fresh PDF page sized to width_px / dpi * 72 points before stamping the bitmap onto it with PDFPage::AddImage(). The result is a "scanned-style" image-only PDF — pixel-faithful to the source, but in a portable format.

When Optimize (MRC) is on, the SDK re-saves the document through addon::optimization::Optimizer::OptimizeScannedPDF(). That runs Foxit's MRC analysis (foreground / background / mask layer separation) and re-encodes each layer with the best codec for its content — JBIG2 for monochrome text, JPEG or JPEG-2000 for photo regions. Typical document scans shrink 10×–100×.