How to convert JPG to PDF without losing quality

Open Images to PDF, add your pictures, drag them into page order and press Download to save images.pdf. Each image becomes one page. JPG and PNG files go into the PDF exactly as they are, so the PDF looks as sharp as the pictures you started with.

Steps

1. Open Images to PDF and drop JPG, PNG, WebP or other image files onto the box, or choose them from your device.
2. Drag the cards into the order you want, or use the arrows on each card. Each card shows the page it will be. Order in the panel can also sort by name or reverse the list.
3. Leave the page size on Fit image for borderless pages that match each picture exactly, or choose a paper size such as A4 or Letter.
4. To give one page its own size, orientation, margin or rotation, click its card. Hold Cmd or Ctrl to pick several.
5. The PDF updates on your device as you change things. Press Download to save images.pdf.

Page size: Fit image or a paper size

With a paper size you also choose:

• On the page: Whole shows the full picture with blank space where the shapes differ, Fill covers the page and trims the edges, Actual size keeps the picture's own size, centred.
• Orientation: Auto turns each page to suit its picture, or fix Portrait or Landscape.
• Margin: None, Small, Large, or a custom value.

A picture is never stretched; it always keeps its aspect ratio.

Why the quality stays the same

Decoding a JPG and saving it again costs a little sharpness each time. Here, JPG and PNG files are placed into the PDF unchanged, so the pixels in the PDF are the pixels in your file. WebP, GIF and other formats your browser can open are converted once to lossless PNG.

The trade-off is size: the PDF weighs about as much as the pictures you put in. Twelve 3 MB phone photos make a PDF of roughly 36 MB. If that is too much to send, either compress the photos first with Compress image, which takes a target in KB, or compress the finished PDF with Compress PDF.

Phone photos and HEIC

Phones often save a photo sideways and record which way is up inside the file. The tool reads that and turns the page to match, so each photo comes out upright, the way it looks on screen. The camera's EXIF block, which can include location, is left out of the PDF.

HEIC photos, the format many iPhones use, open here only in browsers that read HEIC themselves, such as Safari. Elsewhere, convert them to JPG first with the image converter.

Questions

Can I convert several JPGs into one PDF?

Yes. Add them all at once; each becomes a page in the order of the cards. There is no fixed limit on how many, though a large batch of big photos uses more memory on an older device.

Can some pages be A4 and others landscape?

Yes. Every page follows the default settings until you click its card. Apply to all makes one page's settings the default, and Reset puts a page back.

Does it work offline?

Yes, once the page has loaded. The PDF is built on your device.

Are my photos uploaded?

No. The images are read and the PDF is written in your browser. Nothing is sent to a server.