How to Convert JPG Images to PDF Online
Converting images to PDF is essential when you need to share photos in a universally readable format, submit scanned documents, create a photo book, or compile multiple pictures into a single portable file. NaughtyPDF handles JPG and PNG images and lets you control the page size and order before generating the PDF — entirely in your browser.
Page Size Options Explained
- Fit to image: Each page is sized exactly to its image's dimensions. Produces the most compact PDF when images vary in size or have unusual aspect ratios.
- A4 (portrait): 210 × 297 mm — the standard paper size in most of the world. Images are scaled to fill the page while preserving aspect ratio.
- US Letter (portrait): 8.5 × 11 inches — the standard in North America. Images are scaled to fill while preserving aspect ratio.
Common Use Cases
- Scanned documents: Phone cameras often save scans as JPGs. Convert them to PDF for submission to banks, government agencies, or HR departments.
- Photo portfolios: Compile a selection of photos into a single PDF to share with clients or for print-on-demand services.
- Receipts and invoices: Convert receipt photos to PDF for expense reports or accounting systems that require PDF attachments.
- Email attachments: PDFs are universally readable and compress more efficiently for email than a ZIP of images.
Frequently Asked Questions
How many images can I convert at once?
There is no hard limit. However, very large image sets (50+ high-resolution photos) may take longer to process and require more browser memory. For best performance, use images under 5 MB each.
Is image quality preserved?
Yes. pdf-lib embeds images directly without re-compression. The embedded JPEGs retain their original compression quality.
Does PNG transparency carry over?
PNG transparency is preserved as-is within the PDF. Viewers that support PDF transparency will display it correctly; others may render the transparent areas as white.