Images to PDF

Almost nobody converts images to PDF for fun. They do it because something on the other end will only accept one file, or only accepts PDF: a visa application, a claim form, an expense report, a landlord, a university, a court filing.

So the useful version of this tool is not just "wrap each image in a page". It is: put them in the right order, keep them readable, and produce something that looks like a document rather than a folder of snapshots. Order is the part most tools get wrong — they use whatever sequence the file picker returned, which is rarely the sequence the pages should be in.

Here the images are listed in the order they will appear and can be moved up and down before you build. For a photographed six-page contract that is the difference between a document someone can read and one they send back.

Three choices, and the right one depends on whether a human will print this or just read it.

Fixed sizes rotate to match each image. A landscape photo on "A4" produces a landscape A4 page, not a portrait one with two thick white bands above and below — which is what you get from tools that treat page size as a fixed rectangle. Mixed orientations therefore produce a mixed document, which is correct: each page suits its own picture.

Images are never enlarged. A small screenshot placed on A4 is drawn at its natural size and centred, because scaling a 400-pixel image up to fill a page only makes it blurry while making the file bigger. Scaling down to fit happens as needed and preserves the aspect ratio exactly.

Choose Fit when the PDF is only going to be read on a screen and white space is wasted. Choose A4 or Letter when it will be printed, or when whoever receives it expects something page-shaped.

The images that end up in these PDFs are rarely holiday pictures.

They are a passport and a utility bill for a rental application. Payslips for a mortgage broker. A signed contract photographed page by page because nobody has a scanner any more. Receipts for an expense claim. Medical documents for an insurer. Photographs of damage after an accident. Bank statements. Identity documents for a visa.

That is close to a complete set of the documents used to impersonate someone. Uploading them to a free converter means handing an unknown operator a folder containing your ID, your address and your financial position, all at once and neatly labelled — and the reason you are converting is usually that you are about to send them somewhere legitimate that asked for one file.

Here the PDF is assembled in your browser. The images are read from your disk, embedded by your own device and written back as a download. Nothing is transmitted; check the Network tab, or turn off Wi-Fi and build the document anyway.

One related habit worth adopting: photographs of documents carry the GPS coordinates of where you took them, which for paperwork usually means your home. Embedding them here does not carry that metadata into the PDF, but the original JPEGs on your phone still have it if you share those separately.

JPEG and PNG are embedded directly, exactly as they are, because those are the two formats a PDF can carry natively. Nothing is re-encoded, so a photo in the PDF is byte-for-byte the photo you chose and loses no quality.

WebP, AVIF and GIF are converted to JPEG first, since a PDF cannot embed them. That conversion costs one compression generation, which is invisible in practice but worth knowing if you are working from an original you care about.

The output is roughly the sum of your images, because embedding is not compression. Photographs straight off a phone are several megabytes each, so a twelve-page document can easily land above an upload limit. If that happens, compress the images first with the tool linked below and then build the PDF — compressing before embedding works far better than trying to shrink the PDF afterwards.

Everything runs in your device's memory, so a very large batch of high-resolution photos will be slower on an older phone. There is no artificial page or size cap, and no watermark.