Send a batch of photos as-is and they arrive out of order and scattered across separate files. Images that belong together — both sides of an ID, a stack of receipts, handwritten notes, a scanned contract — are far easier to handle as one PDF, and plenty of places only accept PDF submissions anyway.
This tool merges several images into a single PDF in the order you set. It assembles the PDF file structure directly in the browser and embeds each image as a JPEG stream. Nothing is uploaded, so photos of ID documents or contracts stay on your machine.
How to use
- Add your images — Click the dashed area to select several files at once, or drag them in. Dropping more later appends them to the end. PNG, JPG, WebP, GIF and AVIF are all accepted.
- Set the order — Use the arrows under each thumbnail to move it, and × to drop it. Top-left to bottom-right becomes the page order. Files do not necessarily arrive in filename order, so check the numbers before generating.
- Choose a page size — Image size uses each photo's own proportions as the page, which suits documents that will only be viewed on screen. For printing or formal submission, pick A4 or Letter: images are fitted inside the sheet with their aspect ratio intact, and margin and orientation are adjustable under More.
- Download the PDF — Press PDF download and the file is built and saved immediately. A single image keeps its own name; several become
images.pdf.
Frequently asked questions
The PDF is smaller than my original photos.
Images are re-encoded as JPEG at the quality setting when they go into the PDF. At the 90% default that trims size with no visible difference.
If you need maximum fidelity, raise quality to 100% under More. If you are bumping into an email attachment limit, dropping to around 70% shrinks the file considerably. For photographed documents, anything above 80% keeps text comfortably legible.
What happens to transparent PNGs?
Transparent areas are filled with white, because the images are embedded as JPEG and JPEG has no alpha channel.
For documents and photos this is exactly what you want and causes no problems. If transparency actually matters — a logo you intend to place over another background — keep the PNG rather than wrapping it in a PDF.
I chose A4 and there is empty space around my image.
The image and the sheet have different aspect ratios. A4 is roughly 1:1.41 while phone photos are usually 3:4 or 9:16, so one dimension runs out first.
Cropping to fill would cut content away, so preserving the ratio is the safer default. If the margins bother you, choose Image size to keep the original proportions, or reduce the margin to zero under More.
Can I search the text in the resulting PDF?
No. Images are placed as pictures, so the result is a PDF of photographs with no character data in it.
To get a searchable, copyable PDF you need to export directly from a word processor, or run the scans through OCR to add a text layer. When a form simply asks for a scanned copy, what this tool produces is exactly right.
Concepts worth knowing
How images live inside a PDF
PDF stores images as reusable objects called XObjects. Each one records pixel dimensions, colour space and compression method, and pages simply reference it: draw that object here, at this size.
When the compression is JPEG, the original JPEG bytes can be embedded verbatim (DCTDecode) with no re-compression — which is why this tool uses JPEG. Carrying a PNG through unchanged would require a different filter plus predictor handling, producing a larger file and a considerably more complex structure.
Points, pixels and printed size
PDF measures length in points, where one inch is 72 points, making A4 595×842 points. Images are measured in pixels, so something has to bridge the two.
Image size maps pixels straight onto points. A 1000-pixel photo becomes a 1000-point page — about 35cm — which is fine on screen and odd on paper. For anything printed, choose A4 or Letter: the image is then laid out at true sheet size, and a higher-resolution source simply prints better.
Making a scan for submission
Offices and agencies often ask for a scanned PDF. A phone camera is perfectly adequate, and a few habits cut the odds of rejection.
Shoot straight on in good light with no shadow across the page, keep all four corners in frame, and double-check the order when there are several pages. Use A4 with quality at 90% or above so the text stays sharp, and only lower the quality if the recipient enforces a file size limit.