Troubleshooting Common Issues with Axommsoft Image to PDF

Best Settings in Axommsoft Image to PDF for High-Quality PDFsConverting images to PDF while preserving visual quality requires attention to input image preparation, conversion settings, and export options. This guide walks through the best settings and practical workflow in Axommsoft Image to PDF to produce high-quality, visually accurate PDFs for print, presentation, or archiving.

1. Prepare your source images

• Use the highest-resolution originals available. Higher-resolution source images produce better final PDFs.
• Prefer lossless formats (TIFF, PNG) or high-quality JPEGs (low compression).
• For scanned pages, ensure 300–600 DPI for print-quality output; 150–200 DPI is usually sufficient for screen viewing.
• Correct orientation, crop margins, and fix exposure or color balance before conversion to avoid embedding imperfections into the PDF.

2. Image sizing and DPI settings

• If Axommsoft allows specifying DPI or output image size, set DPI to 300 DPI for print-ready PDFs and 150–200 DPI for screen-only documents.
• Avoid upscaling small images; upscaling increases visible artifacts. If images are smaller than target print size, source higher-resolution files if possible.

3. Color and bit depth

• For color documents, use RGB color space for on-screen viewing and CMYK if the PDF will be professionally printed and you have color-managed images.
• Set bit depth to 24-bit (true color) for photographs and 8-bit grayscale for black-and-white scans to reduce file size while maintaining quality.

4. Compression settings

• Choose lossless compression (ZIP/Flate) when preserving maximum quality is essential. Lossless compression keeps original image fidelity but increases file size.
• Use JPEG compression only when file size is a priority; set quality to 85–95% to retain most visual detail with significantly reduced size.
• For mixed documents, consider different compression per image type (photographs vs. line art) if the app supports it.

5. PDF output options

• Select a PDF standard consistent with your needs (PDF/A for long-term archiving; PDF/X for print workflows). PDF/A ensures future accessibility and is preferred for archival.
• Embed fonts only if the document contains text layers added during conversion; embedding images is standard.
• If available, enable “Optimize for Fast Web View” for PDFs intended for online sharing — this linearizes the file for quicker page-by-page loading.

6. Page layout and margins

• Maintain original aspect ratio to avoid distortion; use “fit to page” with letterboxing or pillarboxing rather than stretching.
• Set consistent margins based on intended use: small margins (~6–12 pt) for printed booklets, larger margins for presentations.
• For multi-image pages, align images and use consistent spacing to maintain a professional look.

7. Batch conversion tips

• Group images by similar resolution and color profile to apply the same conversion settings efficiently.
• Create and save presets (if Axommsoft supports them) for common tasks: “Print-quality color,” “Screen-optimized grayscale,” and “Archive (PDF/A).”
• Run a short test batch (2–5 pages) with chosen settings to verify output before converting large sets.

8. Post-conversion checks

• Open the resulting PDF and inspect pages at 100% and 200% zoom to check for compression artifacts, blurring, or incorrect colors.
• Verify text visibility and sharpness if images contain fine text; increase DPI or reduce JPEG compression if necessary.
• Check file size — if unexpectedly large, adjust compression settings or reduce DPI slightly.

9. Troubleshooting common issues

• Blurry output: increase DPI or use less aggressive compression.
• Banding or color shifts: confirm color space consistency (RGB vs CMYK) and embed color profiles where possible.
• Large file size: lower JPEG quality to ~85% or switch to mixed compression strategies; downsample images exceeding the target DPI.

10. Example recommended presets

• Print-quality color: DPI 300, RGB (or CMYK for print), 24-bit, lossless or JPEG 95%, PDF/X or PDF/A.
• Screen-optimized: DPI 150–200, RGB, 24-bit, JPEG 85–90%, standard PDF.
• Archive (PDF/A): DPI 300, embed color profiles and metadata, lossless compression, PDF/A-1b or PDF/A-2b.

Final note: test settings with a representative sample of your images before scaling up. Small adjustments to DPI and compression usually yield the best balance between visual quality and file size.