Image to PDF & Print Sheet Maker

Why images-to-PDF is really a printing problem

Almost every reason to turn images into a PDF ends at a printer or a form upload: a set of photos to print at home, receipts for an expense claim, screenshots attached to a report, a contact sheet to mark up. What matters is therefore physical: the paper size, the margins, how many images fit on a page, and whether the file carries enough pixels to print sharp.

Most converters ignore all of that. They drop each image on a page at whatever size it happens to be, embed the full-resolution original, and hand back a 60 MB file that still prints badly. This tool works the other way round: you choose the paper and the layout, and each image is re-encoded to exactly the pixels that layout needs at your chosen DPI.

The PDF itself is assembled in your browser — there is no upload step, which is the part that matters when the images are receipts, IDs, or internal screenshots.

Common use cases

Printing photos at home

Put anything from 1 to 16 photos on A4, Letter or 4×6 paper with even margins, then print the sheet and trim to the crop marks.

Receipts and expense claims

Combine phone photos of receipts into one ordered PDF that an expense system will accept as a single attachment.

Screenshot reports

Turn a sequence of screenshots into a paginated PDF that reads in order, instead of attaching a dozen loose PNGs.

Contact sheets

Lay a shoot out 9- or 16-up with the file name under each frame, so a client can circle the selects on paper.

Choosing the right settings

300 DPI is the standard for photo printing; 150 is fine for screenshots and reference sheets, and keeps the file small.

"Fit whole image" never crops — expect white space when a 4:3 photo sits in a taller cell. "Fill the cell" crops instead, which is what you want for edge-to-edge photo prints.

Keep at least 8–10 mm of margin: most home printers cannot print to the edge, and a smaller margin gets clipped anyway.

Crop marks print outside each image, so they need about 4mm of page margin to appear. Turn them on for multi-up photo sheets and off for documents, where they would read as page furniture.

Leave "Turn images to fit" on for mixed portrait and landscape shots: a sideways photo is rotated a quarter-turn rather than shrunk to fit, which on a 4×6 sheet is the difference between filling the paper and using half of it.

Use Lossless quality for screenshots, scans and line art — JPEG smears text edges at any DPI. Photographs are better served by Balanced or High, which are several times smaller.

Set Copies to print a sheet of the same image: twenty stickers or passport photos embed the picture once, so the file stays small.

Landscape suits screenshots of wide interfaces; portrait suits phone captures and documents.

The order in the list is the order in the PDF — reorder with the arrows before exporting rather than re-adding files.

Build a PDF in three steps

Add your images

Drop them in and put them in the order you want the pages to read.

Set the page and layout

Pick paper size, orientation, grid, margins, fit mode and DPI — the preview redraws the actual sheet as you go.

Build the PDF

Each image is re-encoded for its slot, then the PDF is assembled and downloaded.

Frequently asked questions

Are my images uploaded to a server?

No. Decoding, scaling and PDF assembly all happen in your browser — nothing is sent anywhere, which is not true of most online converters.

Why is the PDF smaller than the sum of my images?

Each image is re-encoded to the pixels its position needs at the DPI you picked. A 6000px photo printed at 60mm wide only needs about 700px at 300 DPI; embedding the rest would add megabytes and no visible detail.

Will transparency be preserved?

Yes. An image with transparent areas is embedded losslessly with its alpha channel intact, so a cut-out or a logo stays transparent instead of being flattened onto white. Opaque photos still take the smaller JPEG path unless you choose Lossless.

How many images can one PDF hold?

Up to 200 with Pro. The free tier builds a PDF from 5 images at up to 150 DPI, with a Collage Pro watermark on every page; Pro exports without it.

Can I mix page sizes in one document?

Only with "Fit page to photo", which gives every image a page cut to its own proportions. Otherwise each page uses the one size and orientation you selected.

Does it print at the exact size I chose?

Yes, as long as your print dialog is set to 100% or "actual size" rather than "fit to page", which silently rescales everything.

What does the preview actually show?

The sheet itself. The preview and the exported file are drawn from one layout, so the margins, crop marks, captions and any watermark sit exactly where they will print — there is no second rendering that can disagree with the download.