JPG to PDF converter: combine photos into one PDF
Add your photos, drag them into order, choose a page size, and download one PDF. Everything runs in your browser.
Your images stay on this device. JPGs are placed in the PDF without recompression; location and camera data are removed.
Add at least one image.
Show your work
Convert to see the page-by-page calculation.
How it works
Add your photos, put them in order, and pick a page size, margin and placement. Each image gets its own page and is centred on it. JPGs are copied into the PDF as they are, with no recompression, and nothing leaves your device.
How we calculate it
After you convert, open "Show your work" to see one row per page with these numbers.
- Units. PDF pages are measured in points. 1 pt = 1/72 in = 0.3528 mm (ISO 32000-1 §8.3.2.3), and 1 in = 25.4 mm. So pt = mm × 72 ÷ 25.4.
- Page size. A4 is 210 × 297 mm (595.28 × 841.89 pt). A3 and A5 also follow ISO 216. Letter is 8.5 × 11 in (612 × 792 pt) and Legal is 8.5 × 14 in (612 × 1008 pt). The default is Letter for US, Canadian and Mexican browser settings, and A4 everywhere else.
- Orientation. On Auto, a photo that is wider than it is tall gets a landscape page. Everything else gets a portrait page.
- Margin. The same on all four sides. 10 mm = 28.35 pt = 0.39 in. The image area is the page minus two margins in each direction.
- Rotation. We read the EXIF orientation tag from the photo and add your Rotate presses: total = (EXIF + yours) mod 360. The turn happens in the PDF drawing command, so the JPEG is not re-encoded. Mirrored orientations are rare and go through a canvas instead.
- DPI. Taken from the JFIF header, then EXIF, then the PNG pHYs chunk. If the file has none, 96 DPI is used. The natural print size is pixels × 72 ÷ DPI points.
- Scale. Fit to page: s = min(area width ÷ image width, area height ÷ image height). The whole image shows, nothing is cropped, and small images are enlarged. Actual size: s is also capped at 72 ÷ DPI, so the image prints at its natural size unless it is too big. The Scale column shows s × DPI ÷ 72 × 100, where 100% means natural size.
- Image box. x = margin + (area width − drawn width) ÷ 2, and the same for y. PDF coordinates start at the bottom-left corner of the page.
- Fit to image. The page is the natural print size plus margins. Each side is kept between 3 and 14,400 pt (200 in), the PDF size limits.
- Method. "Original JPEG data, metadata removed" means the JPEG bytes were copied, minus GPS, camera details, thumbnails and any trailing data. PNGs keep their pixels and transparency. WebP, GIF, BMP, AVIF, HEIC and CMYK JPEGs are converted to PNG if they have transparency and to JPEG at 92% quality if not. Images in that path that are over 16.8 megapixels are scaled down to fit browser limits.
Example: a 4032 × 3024 phone photo with EXIF orientation 6 (rotate 90°) at 72 DPI, on Letter with no margin. Upright it is 3024 × 4032, so the page is portrait, 612 × 792 pt. s = min(612 ÷ 3024, 792 ÷ 4032) = 0.1964. The image is drawn at 594 × 792 pt, 9 pt in from the left and right edges. Scale reads 20%.
Need a smaller PDF?
Shrink the photos first with the JPG compressor, or cut their pixel size with Resize image, then add them here. To change one image's format instead, use JPG to PNG.
Questions
How do I combine several JPGs into one PDF in the right order?
Add all the photos. Then drag each one by its handle, use the Move up and Move down buttons, or pick "Name A to Z" under Sort. The sort reads numbers as numbers, so IMG_2 comes before IMG_10. Need one PDF per photo instead? Choose "One PDF per image" and you get a ZIP.
Will my photo quality drop?
Not for JPGs. The original JPEG data is copied into the PDF without recompression. Only metadata such as GPS location and camera details is removed. PNGs keep their exact pixels. WebP, HEIC, GIF, BMP and AVIF have to be converted first, and the Method column in "Show your work" says how.
Why are my photos sideways in the PDF, and how do I fix it?
Phones often save a photo sideways and add an EXIF tag that says which way is up. Many converters and PDF viewers ignore that tag. This tool reads it and rotates the image on the page, so phone photos come out upright. You can also press Rotate on any image.
How do I get the PDF under 200 KB for a form upload?
Shrink the photos first with the JPG compressor, then add them here. JPGs go into the PDF unchanged, so the PDF ends up only slightly larger than the photos added together. A built-in size target is planned.
Are my files uploaded? Is there a limit or a watermark?
No upload, no account and no watermark. The PDF is built in this browser tab, and the page works offline once loaded. There is no cap on the number of images. Each file can be up to 50 MB, and your device memory sets the real ceiling for very large batches.