JPG to PDF
JPG to PDF: free, instant and private. Because the JPEG data is copied verbatim into the PDF container, image quality is bit-for-bit identical to your originals.
How the JPG to PDF works
The JPG to PDF takes Choose file, Page size and returns the answer instantly — no button to hunt for, no page reload. Because the JPEG data is copied verbatim into the PDF container, image quality is bit-for-bit identical to your originals. Multiple images become multiple pages in the order you selected them.
Enter your own numbers to replace the example values; the result panel updates as you type. Everything runs in this single page, so nothing you enter leaves your device.
Formula used
JPEG bytes embedded as DCTDecode XObjects, one per page
| Symbol | Meaning |
|---|---|
| page size | fit to image, or A4/Letter with the image centred |
| JPEG | passed through untouched — no re-compression, no quality loss |
Because the JPEG data is copied verbatim into the PDF container, image quality is bit-for-bit identical to your originals. Multiple images become multiple pages in the order you selected them.
Inputs used: Choose file, Page size.
Worked example
Run the tool above with your own file — the result is a direct download, so there are no numbers to show here.
Frequently asked questions
- What formula does the JPG to PDF use?
- It uses JPEG bytes embedded as DCTDecode XObjects, one per page, where page size is the fit to image, or A4/Letter with the image centred; JPEG is the passed through untouched — no re-compression, no quality loss.
- Is the JPG to PDF free?
- Yes. There is no signup, no usage limit and no watermark — the generator runs entirely in your browser.
- How do I read the result?
- Because the JPEG data is copied verbatim into the PDF container, image quality is bit-for-bit identical to your originals. Multiple images become multiple pages in the order you selected them.
- Does the JPG to PDF store or send my data?
- No. Every calculation happens locally in the page, so the numbers you type are never uploaded or logged.
- Does it work on a phone and offline?
- Yes — the page is a single lightweight file that adapts to any screen size. Once it has loaded it keeps working without a network connection.