One PDF From Many Pictures
Receipts photographed on a phone, a passport scanned in two halves, a set of screenshots for a bug report, a homework assignment shot page by page, all of these arrive as a pile of images and need to leave as one document that somebody else can open, print and file without being sent a folder.
Add the images, put them in order, choose how the pages should be shaped, and save. The whole thing is assembled locally, which matters when the pictures are of an ID card, a bank statement or a medical letter.
How to Convert Images to a PDF
The only decision that needs any thought is the page shape, and the two sensible answers are covered below.
- Drop your images onto the box above, or click to select them. You can add several at once and more later.
- Reorder them with the arrows. Pages follow the list from top to bottom, and the number on the left is the page each image will become.
- Remove anything you do not want with the cross. Each entry shows its pixel dimensions and file size, so you can spot a low-resolution shot before it becomes a page.
- Choose the page size: Fit page to image for phone photos, or A4 or US Letter if the result will be printed or filed with other documents.
- Set the orientation. Match each image is usually right; portrait or landscape forces every page one way.
- Add a margin if you want white space around each picture, then press Create PDF and download the result.
How the Page Sizes Differ
Fit page to image gives every page exactly the proportions of its picture, one PDF point per pixel. Nothing is cropped, nothing is letterboxed, and a document of phone photos comes out looking like the photos rather than like photos pasted onto stationery. The trade-off is that the pages will be all different sizes, which some printers handle awkwardly.
A fixed A4 or US Letter page scales each image down to fit inside and centres it, keeping the aspect ratio so nothing is distorted. Any leftover space is white. This is the right choice when the file will be printed, bound with other papers, or submitted somewhere that expects a standard page size, most official forms and most print shops do.
What Happens to Each Image Format
PDF can store JPEG and PNG data directly. Anything else has to be converted, which is worth knowing if quality matters.
| Input format | How it is handled | Quality |
|---|---|---|
| JPEG / JPG | Embedded as-is | Untouched, byte for byte |
| PNG | Embedded as-is | Untouched, transparency preserved |
| WebP | Decoded, re-encoded to JPEG | One generation of JPEG loss |
| AVIF | Decoded, re-encoded to JPEG | One generation of JPEG loss |
| GIF | Decoded, re-encoded to JPEG | First frame only |
| HEIC | Only if your browser can decode it | Varies by browser |
Converted formats are flattened onto white first, because JPEG has no transparency. If you need a transparent image to stay transparent, convert it to PNG before adding it here.
Quality, File Size and Resolution
JPEG and PNG images are embedded byte for byte, so the PDF weighs roughly what the pictures weighed and their quality is untouched. That has a straightforward consequence: a dozen full-resolution phone photos make a PDF of a dozen full-resolution phone photos, which can easily run past fifty megabytes. If size matters more than detail, shrink the images first with the Image Compressor, or run the finished PDF through the PDF Compressor.
Resolution is worth a thought if the document will be printed. A photo that is 1000 pixels wide printed across an A4 page works out at around 120 DPI, which is fine on screen and visibly soft on paper. For anything that has to be legible in print, aim for images at least 2000 pixels on the long edge.
Photographs You Would Not Upload
The images people most often need to turn into a PDF are photographs of documents: a driving licence for a rental, a signed form for an employer, a prescription, a utility bill used as proof of address. These are exactly the pictures that should not be handed to an unknown service, and exactly the ones most such services ask for.
Nothing here is uploaded. The images are decoded in your browser, the PDF is assembled in memory, and the finished file is offered as a direct download. There is no account, no queue and no server-side copy, and the tool keeps working with the network switched off.