Images to PDF

What is an images-to-PDF converter?

An images-to-PDF converter takes a set of pictures — photos, screenshots, scanned pages — and packages them into a single PDF document, with each image placed on its own page. A PDF is the most portable way to share or archive a stack of images: it keeps them in order, opens the same way on every device, and travels as one tidy file instead of a folder full of loose pictures.

This converter does the whole job inside your browser. It reads each image, embeds it into a PDF using the pdf-lib library, and hands you the finished file to download. Nothing is sent to a server, so even sensitive material like scanned receipts, contracts or ID photos stays entirely on your own computer.

How to use it

1. Add your images by clicking the picker and selecting one or more JPG or PNG files. You can come back and add more — they append to the list.
2. Review the order. Each image is numbered and will become a page in that sequence. Use the up and down arrows to rearrange, or remove any image you do not want.
3. Pick a page size. Choose Fit to image so every page matches its photo exactly with no borders, or A4 / Letter to place each image, centred, on a standard document page.
4. Click Create & download PDF. The tool builds the document and your browser downloads it as images.pdf.

While the PDF is being assembled you will see a busy indicator, and if any file could not be embedded the tool tells you how many were skipped so nothing fails silently.

Choosing a page size

The right page size depends on what the PDF is for:

• Fit to image makes each page exactly the dimensions of its picture. This is ideal for photo collections, comics or screenshots where you do not want white margins around the content.
• A4 is the standard document size used almost everywhere outside North America. Pick it when the PDF will be printed or filed alongside other A4 paperwork.
• Letter is the standard size in the United States and Canada. Choose it for documents that will be printed on US Letter paper.

With A4 and Letter, each image is scaled down to fit inside a small margin and centred on the page, so tall and wide images both sit neatly without being cropped or stretched.

How the conversion works

When you add files, the tool reads each one into memory as raw bytes and embeds it directly into a new PDF document using pdf-lib, a PDF engine that runs in pure JavaScript. JPEG images are embedded with their native compression and PNG images keep their lossless data, so the picture quality inside the PDF matches the original file — there is no re-compression or quality loss in between. Each embedded image is placed on its own page, either at its exact dimensions (Fit to image) or scaled and centred on a standard page (A4 or Letter).

Because the whole process is local, large batches are handled in a single pass without ever touching the network. The converter is also forgiving: if one file in your selection turns out to be corrupt or in an unsupported format, it is quietly skipped and the rest still make it into the finished PDF, with a note telling you how many were left out. That means a single bad photo never blocks the whole export, and your scanned documents, receipts or personal photos are assembled into one file without leaving your device.

Tips and common mistakes

• Order before you build. The page order follows the list exactly, so arrange your images first — it is quicker than re-sorting pages in a PDF afterwards.
• Use JPG for photos. Photographs stored as JPG keep the PDF small. PNG is better for screenshots, diagrams and anything with sharp edges or text, but the resulting file can be larger.
• Watch the file size with many photos. A PDF made from dozens of high-resolution photos can grow large. If you need a smaller file, resize or compress the images before adding them.
• Mixed sizes are fine. You can combine portrait and landscape images in the same PDF. With Fit to image each page simply takes the shape of its picture; with A4 or Letter they are centred on a consistent page.
• Unsupported files are skipped, not fatal. If you accidentally select a non-image file, the converter ignores it and still builds the PDF from everything valid.

Once the PDF exists, you can combine it with other documents in Merge PDF or number its pages with Add Page Numbers to PDF — both just as locally. Because every step happens locally in your browser, you can convert as many images as you like — including private or work documents — without an account and without anything ever being uploaded.