Productivity & Documents5 min read
How to Convert and Merge Multiple Images into a High-Resolution PDF
A comprehensive tutorial on combining JPG, PNG, and WebP photos into single or multi-page PDF documents with custom paper sizes, margins, and orientation.
How to Convert and Merge Multiple Images into a High-Resolution PDF
Combining receipts, scanned contracts, assignment sheets, certificates, or photo portfolios into a single clean PDF document is a daily requirement for students, freelancers, and businesses.
1. Key Configuration Settings for Image-to-PDF Conversion
When compiling visual assets into a PDF, configure the following options:
- Page Dimensions: Select A4 (International standard, 210 × 297 mm) or US Letter (8.5 × 11 inches) depending on your region.
- Page Orientation: Use Portrait for documents and certificates, or Landscape for panoramic photos and wide spreadsheets.
- Margin Spacing: Apply clean margin borders (e.g. 10mm–15mm) to ensure content is never clipped when physically printed.
- Image Scaling (Fit vs Fill): Choose Fit (Contain) to preserve full image aspect ratios without cropping any edges.
2. Converting Multiple Photos to PDF in Lumino
- Open the Lumino Image to PDF Converter.
- Drag and drop multiple photos into the upload studio.
- Drag thumbnail cards to re-order the pages in your desired sequence.
- Select your preferred Page Size, Orientation, and Margin padding.
- Click Generate & Download PDF Document.