📂 Batch Upload Rule
For multi-file uploads, all files in the same batch should use the same source type (for example all JPG or all MP3).
JPG (Joint Photographic Experts Group) is a compressed photo format. PDF (Portable Document Format) is a fixed-layout document format for sharing and printing. Explore our Universal Converter to convert other file types.
Quick rules and tips to get the best results.
For multi-file uploads, all files in the same batch should use the same source type (for example all JPG or all MP3).
Set your preferred output quality to balance file size and clarity. Compression behavior is tailored to each file format.
Each conversion request supports up to 200 MB total. Each user can upload a total of 500 MB per hour.
Completed jobs are saved on this device for up to 1 hour, unless you remove them from the list.
Converting JPG to PDF builds fixed-layout pages for sharing and printing. The quality slider recompresses the source image to JPEG before embedding it into a PDF page. The result is a predictable document output path where layout stability and file size are balanced through the converter’s quality pipeline.
The quality slider recompresses the source image to JPEG before embedding it into a PDF page. Higher slider values generally preserve more visual detail, while lower values prioritize smaller file size for faster sharing and downloads.
PDF output is generated as fixed pages, so recipients see a consistent layout across browsers and operating systems. For document sources, rendering follows LibreOffice export behavior; for image sources, content is embedded as page media.
Lower quality settings usually reduce output size by applying stronger compression to embedded content. Higher settings preserve sharp text edges and gradients better, which is useful when the PDF will be reviewed or printed.
PDF remains one of the most reliable formats for print workflows, approvals, and attachment sharing. The fixed-layout model helps preserve visual consistency when files move between phones, desktop apps, and cloud tools.