PRACTICAL PDF GUIDE
How to turn JPG, PNG and scanned images into a PDF
Arrange image files, choose sensible PDF page dimensions and understand when conversion, rendering or OCR is the right operation.
Open Image to PDFBy PDF Universe · Based on current tool controls and limits
Pick the right starting point
Use JPG to PDF for photographs, PNG to PDF for screenshots and graphics, or Image to PDF for a mixed set. These tools share the supported image conversion pipeline. Scan to PDF packages scans you have already saved; it does not control your camera or scanner.
Arrange images before processing
Choose up to twenty supported image files and put them in reading order using the upload-list controls. Check that each photograph includes the whole sheet and is in focus. Multi-frame image sources, such as some TIFF files, may contribute more than one PDF page.
Review the physical page size
The current converter maps source pixels to physical page dimensions at 150 DPI, with no added margins. This website does not expose a DPI or margin control for image conversion. The conversion does not create extra photographed detail. Inspect the output’s page size before printing or inserting it into a report.
Conversion is different from OCR
The resulting PDF contains image pages. Printed words in a photograph do not automatically become selectable text. Use OCR PDF afterward if you need search or text copying, and review the recognized words for mistakes.
Example: packaging six scanned sheets
Choose your six image files and arrange them in reading order in the upload list. Check orientation and legibility before converting, then open the downloaded PDF and verify that all six sheets are present. This example assumes one frame per image; a multi-frame TIFF can add extra pages. If you need to find a reference number by searching, run OCR on the resulting PDF and verify that number against the original image.
If printed pages have an unexpected size
The current 150 DPI mapping means a 1500 by 2100 pixel image creates a page roughly 10 by 14 inches before any reader print scaling. That arithmetic describes page dimensions, not the quality of the photographed detail. Use your PDF reader’s print preview and fit-to-paper setting when appropriate; the website does not currently provide an A4, margin or physical-size selector for this conversion. Very large decoded images may be rejected even when the compressed image file looks small.
Conversion is different from rendering
PDF to JPG and PDF to PNG go the other direction: they render document pages as images. A PNG can retain lossless edges but be larger than a JPEG. A rendered page no longer offers the original interactive forms or selectable PDF text. Choose the output format for the recipient’s actual task.