How to Convert JPG to PDF for Free (With Correct Order and Page Size)

5 min read · Updated 2026-10-12 · PdfPixel

A landlord wants the documents as one PDF. A portal accepts only PDF attachments. Your phone holds eleven photos. Converting images to PDF should be a two-minute job, but most tools get the details wrong: shuffled order, giant margins, or a 40 MB file nobody can email.

This guide covers the four settings that decide whether your PDF looks professional, and how to control all of them in a free browser tool.

Why print-to-PDF is not enough

Sharing a photo and choosing Print to PDF works in a pinch, but you lose control. The page size follows your printer defaults, margins eat the edges, and each image lands on its own page whether you wanted that or not. A dedicated converter lets you decide all of it before the file exists.

What actually happens inside the conversion

Each image is embedded into a PDF page as a compressed object, then a page box is drawn around it. Fit-to-page scales the image to the page minus your margins; actual-size places it at its true DPI dimensions. Nothing is re-photographed or blurred: the pixels go in as they are, which is why the output usually stays sharp.

Step by step: images to one PDF with PdfPixel

1. Open JPG to PDF and add your images in any order. They never leave your device.
2. Drag the thumbnails into the exact sequence you need. Page numbers follow this order.
3. Choose the page size: A4 for most paperwork, US Letter for North American forms, or fit-to-image for portfolios.
4. Set margins and orientation. Narrow margins look modern; 15 to 20 mm keeps photocopies safe.
5. Convert and check the preview page count before downloading.

Choosing page size and margins

• A4 portrait for applications, invoices and school submissions across India and Europe.
• US Letter when the receiver is in the United States or Canada.
• Fit to image for lookbooks, menus and art, where the photo should bleed to the edge.

If the same PDF will be printed and emailed, A4 with 15 mm margins is the safest compromise: nothing important sits in the printer grip zone, and the file stays compact.

Keeping the file small enough to email

Twelve phone photos at full resolution can produce a 60 MB PDF. Two fixes: convert at a sensible page size instead of actual-size, then run the result through the PDF compressor. Most portals accept files up to 1 to 5 MB, and compression gets you there without visible loss on documents.

Frequently asked questions

Tools used in this guide

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