Convert Images to PDF Easily

How to change an image to PDF format

Turning a picture into a document takes three steps. This image to PDF online converter is free, needs no account and leaves no watermark on the result:

1. Add your pictures. Drop them on the box or browse for them. JPG, JPEG, PNG, WebP, GIF and BMP all work — anything your browser can open.
2. Put them in order. Drag the thumbnails around, rotate any that came out sideways, and delete the ones you do not want. Each picture becomes one page.
3. Convert and download. Pick a page size, name the file, and the PDF is built on the spot.

Merging several images into one PDF file

This is the part people usually come looking for. You do not need a separate image to PDF merger or combiner — add as many pictures as you like in one go and they come out as a single multi-page image to PDF file, in the order you arranged them.

You can also add more pictures after the first upload. Use Add more images on the arrange step and they join the batch rather than replacing it, which is handy when the photos you need are sitting in different folders.

Choosing a page size

There are eight options: Original, A3, A4, A5, A6, Letter, Legal and Tabloid.

Original makes every page exactly the size of its picture, so nothing is added and nothing is trimmed. It is the right choice for screenshots, artwork and anything you are not going to print. The fixed sizes do the opposite — the picture is scaled down to fit inside the sheet, keeping its proportions, and centred with white space around it. Pick one of those when the file has to be printed or uploaded somewhere that expects A4 or Letter.

A mixed batch is fine either way. With Original, a tall photo and a wide screenshot simply produce differently shaped pages in the same document.

What happens to image quality

Nothing is re-compressed when it does not need to be. A JPG or PNG is placed into the PDF byte for byte — the same data that was in your file, so there is no second round of JPEG artefacts. Formats that PDF cannot hold directly, such as WebP, GIF and BMP, are converted to lossless PNG first, so those keep every pixel too.

That means the PDF is often about as large as the pictures that went into it, because nothing was thrown away to shrink it. If you need a smaller file, shrink the pictures before converting — the Image Compressor or the Image Resizer in KB will get them to a target size, and the PDF then inherits it.

Nothing is uploaded

The whole image to PDF conversion happens inside this tab using the pdf-lib JavaScript library — there is nothing to install and no file to upload. Your pictures are never sent to a server, so there is nothing to delete afterwards and no queue to wait in — which also means the tool keeps working if your connection drops mid-job.