Which page size should I choose?

Fit each page to its image when the PDF is for reading on screen — no borders, no wasted space. A4 or Letter when it will be printed, so every sheet is the same size and the printer does not scale anything unexpectedly.

Is the image quality reduced?

JPEG and PNG are embedded exactly as they are, so no. Other formats — WebP, GIF, BMP — are re-encoded as PNG first, which keeps every pixel but can make the file considerably larger.

Will the text in my photos be searchable?

No. The pages contain pictures, not text, so nothing can be selected or searched. Making a photographed page searchable needs OCR, which is a different kind of tool.

Why is my PDF so large?

Because it contains the images at full resolution. A modern phone photo is several megabytes, and ten of them make a large PDF. Compress or resize the images first if size matters.

Images to PDF

Put a set of images into one PDF. Add the pictures, order them, and choose whether each page should match the image exactly or be fitted onto A4 or Letter. Useful for turning photographed receipts or scanned pages into a single document you can send — assembled entirely on your own device.

PDF Tools

Choose the images to put in a PDFSelect several at once — assembled on your device, never uploaded

JPEG and PNG are embedded as they are, so no quality is lost. Other formats are re-encoded as PNG first, which keeps the pixels intact but can make the file considerably larger. “Fit each page to its image” gives a page exactly the size of the picture, which suits screenshots; A4 or Letter suits anything meant to be printed.

Private by default

This tool runs entirely in your browser. Your data is never uploaded to a server.

How it works

How each image becomes a page

scale = min((width − margins) ÷ image width, (height − margins) ÷ image height)

With a fixed page size, the image is scaled to fit inside the margins and centred — the smaller of the two scale factors wins, so the whole picture is always on the page rather than cropped. With “fit to image”, the page is created at exactly the image's dimensions and no scaling happens at all.

PDF measures in points, 1/72 of an inch, so an image's pixel dimensions become points directly at 72 dpi.
A4 is 595 × 842 points and US Letter is 612 × 792 — Letter is wider and shorter.
The margin on fixed page sizes is half an inch on every side.
Embedding is lossless for JPEG and PNG: the original bytes go into the file untouched.

For reference

Page sizes in points

Page size	Points	Millimetres	Inches
A4 portrait	595 × 842	210 × 297	8.27 × 11.69
A4 landscape	842 × 595	297 × 210	11.69 × 8.27
US Letter portrait	612 × 792	216 × 279	8.5 × 11
US Letter landscape	792 × 612	279 × 216	11 × 8.5

A point is 1/72 inch, which is why a 612-point page is exactly 8.5 inches wide.

How to use

4 clear steps.

Add the images — you can select several at once.
Order them with the arrows.
Choose a page size, or let each page match its image.
Create the PDF and it downloads.

Good to know

Frequently asked questions

Which page size should I choose?: Fit each page to its image when the PDF is for reading on screen — no borders, no wasted space. A4 or Letter when it will be printed, so every sheet is the same size and the printer does not scale anything unexpectedly.
Is the image quality reduced?: JPEG and PNG are embedded exactly as they are, so no. Other formats — WebP, GIF, BMP — are re-encoded as PNG first, which keeps every pixel but can make the file considerably larger.
Will the text in my photos be searchable?: No. The pages contain pictures, not text, so nothing can be selected or searched. Making a photographed page searchable needs OCR, which is a different kind of tool.
Why is my PDF so large?: Because it contains the images at full resolution. A modern phone photo is several megabytes, and ten of them make a large PDF. Compress or resize the images first if size matters.