PDF vs JPG
At a Glance
| Feature | JPG | |
|---|---|---|
| Primary use | Documents with text and images | Photographs and images only |
| Text support | Searchable, selectable text | Text is part of image (not searchable) |
| Multi-page | Yes, supports multiple pages | No, single image per file |
| Compression | Multiple methods (lossy and lossless) | Lossy compression only |
| File size | Varies by content | Smaller for photographs |
What is PDF?
PDF is a document format that can contain text, images, vector graphics, forms, and interactive elements. PDFs preserve document structure, making text searchable and selectable. They support multiple pages and maintain consistent layout across devices.
What is JPG?
JPG (JPEG) is an image format designed for photographs. It uses lossy compression to reduce file size by discarding visual information that is less noticeable to the human eye. JPG files contain only image data—no text, no multiple pages, no interactive elements.
Key Differences
Content Type
PDFs are designed for documents containing text, images, and structured content. JPGs are designed solely for photographic images. If your file contains text that needs to be searchable or selectable, PDF is the appropriate format. If it's purely a photograph, JPG is more efficient.
Text Handling
Text in a PDF is actual text data that can be searched, selected, copied, and read by screen readers. Text in a JPG is part of the image—it's pixels, not characters. You cannot search for words in a JPG or select text to copy it.
Multi-Page Documents
PDFs can contain hundreds of pages in a single file. JPGs are single images. To share multiple images as JPGs, you need multiple files. To share multiple pages as a PDF, you need only one file.
Compression and Quality
JPG uses lossy compression, which discards data to achieve smaller file sizes. Each time you edit and save a JPG, quality degrades slightly. PDFs can use lossless compression for text and vector graphics, and either lossy or lossless compression for embedded images. A PDF containing a JPG image will have the same image quality as the original JPG.
When to Use PDF
- Documents with text: Reports, contracts, forms, invoices
- Multi-page content: Books, manuals, presentations
- Scanned documents: Digitized paper with OCR text layer
- Mixed content: Documents combining text, images, and graphics
- Archival: Long-term storage requiring format stability
When to Use JPG
- Photographs: Digital camera images and photo sharing
- Web images: Photos on websites and social media
- Image-only content: Artwork, product photos, portraits
- File size priority: When smallest possible file size is critical
Converting Between Formats
Converting JPG to PDF is straightforward—the JPG image is embedded in a PDF page. This is useful for combining multiple images into a single document or adding images to a document workflow. Converting PDF to JPG extracts pages as images, which is useful for sharing specific pages as images or creating thumbnails.
Scanned Documents: PDF or JPG?
Scanned documents should typically be saved as PDFs, not JPGs. A PDF can contain the scanned image plus an OCR text layer, making the document searchable. Multiple scanned pages can be combined into a single PDF. JPGs would require one file per page and would not support searchable text.
Bottom Line
Use PDF for documents containing text or multiple pages. Use JPG for single photographs where text searchability is not needed. PDFs are document containers; JPGs are image files.
Convert between PDF and JPG easily. Use our PDF to JPG and JPG to PDF tools.