What this page does
The converter takes one or more images and writes them into a single PDF, one image per page. It runs in the browser, so the files stay on your device. Nothing is uploaded, nothing is stored, and it keeps working if your connection drops after the page has loaded.
This suits scans, receipts, signed forms, whiteboard photos and phone shots of paper documents. It is not a text-recognition tool: the pages hold pictures, so the text inside them is not selectable or searchable.
Choose the page size
Two sizes cover almost everything.
| Setting | Dimensions | Use it for |
|---|---|---|
| A4 | 210 x 297 mm | Most of Europe, Asia, Africa, Australia; standard office printing |
| Letter | 8.5 x 11 in | United States, Canada, Mexico, Philippines |
Match the size to whoever will open or print the file. If a form says A4, export A4. Mixing sizes in one document is possible but makes printing awkward, so keep one size per file.
Set the margins
A margin is white space between the image edge and the page edge. Three sensible choices:
- None for a full-page scan that already includes its own white border. The image fills the sheet.
- Small, around 10 mm for receipts and photos, so nothing sits against the paper edge where printers cannot reach.
- Larger, 20 mm or more when the PDF will be hole-punched, stapled or bound.
Most home and office printers cannot print to the very edge of the sheet. If you set no margin and the image reaches the border, the outer few millimetres may be cut off. A small margin avoids that.
Order the pages
Page order follows the order in which you select the files. If you add them one at a time, they land in the sequence you clicked. After adding, drag the thumbnails to rearrange. Check the first and last page before converting, since a scan added out of sequence is the most common mistake.
For a multi-page document, name files so they sort naturally (01-invoice, 02-receipt) and select them in that order.
Keep the PDF small
PDF size is driven almost entirely by the images inside it. A phone photo is often 2-5 MB, and ten of them can produce a 30 MB PDF that is slow to email.
Practical ways to shrink it:
- Resize before converting. A document page does not need more than about 1500-2000 pixels on the long edge. A 4000-pixel photo carries detail no printer will show.
- Re-save as JPEG at moderate quality rather than keeping a large PNG. Screenshots and line art stay sharper as PNG, but photos are usually smaller as JPEG.
- Convert to greyscale if the pages are black text on white paper. Colour data on a black-and-white scan is wasted bytes.
- Split the document. Two 8 MB PDFs send more reliably than one 16 MB file.
JPEG and WebP are compressed formats, so re-saving them always discards some data. At moderate settings the difference is hard to see on screen and invisible in print, but it is a real trade between file size and image detail.
Check before you send
Open the finished PDF and page through it. Confirm the page count matches the number of images, the order is right, and no edge content is clipped. Then rename the file something meaningful rather than leaving it as a generic export name.
Questions
Does the order I select images in matter?
Yes. Pages appear in the order you add the files. You can drag the thumbnails afterwards to fix the sequence before converting.
Should I use A4 or Letter?
Use whichever size the recipient prints on. A4 is standard across most of the world; Letter is standard in the US and Canada. When in doubt, ask or match the form you are filling in.
Why is my PDF so large?
The images inside it are large. Resize them to roughly 1500-2000 pixels on the long edge, save photos as JPEG, and use greyscale for black-and-white pages.
Are my images uploaded to a server?
No. The conversion happens in your browser, so the images stay on your device. Nothing is stored, and the page keeps working offline once it has loaded.