How to Convert JPG to PDF Free on Phone or Computer

To convert JPG to PDF for free, open the JPG to PDF converter, add your photos (JPG or PNG) in the order you want the pages, press Convert to PDF and download the file. Each image becomes one page of a single PDF. The PDF is built inside your browser, so ID proofs and certificates are never uploaded to a server, and there is no watermark or sign-up.

This guide covers the steps on a phone and on a computer, how to get the pages in the right order, what page size the PDF ends up with, how to keep it under an upload limit, how to fix a page that comes out sideways, and the free tools already built into Windows, iPhone and Android.

Step by step on a phone

1. Open the JPG to PDF converter in Chrome, Safari or any other browser.
2. Tap Choose files and pick your photos from the gallery or Files. You can pick several at once, or one at a time.
3. Check the list that appears: it shows every file with its size, in the order the pages will appear. Tap Add more files to add another, or the × next to a file to remove it.
4. Tap Convert to PDF. When "Your PDF is ready" appears, tap Download PDF. The file is saved as ethicalfusion-jpg-to-pdf.pdf in your Downloads.

On an iPhone, if a photo is in HEIC format and the picker will not offer it, convert it first with the HEIC to JPG converter. The converter accepts only JPG and PNG; a WebP image can be turned into a JPG with the WebP to JPG converter. The Image to PDF and PNG to PDF pages on this site run the same converter.

Step by step on a computer

1. Open the converter and drag your images onto the drop area, or click Choose files and select them (hold Ctrl, or Cmd on a Mac, to pick several).
2. Check the order in the file list. Remove any wrong file with its ×.
3. Click Convert to PDF, then Download PDF.

Several images in one PDF: getting the page order right

Pages follow the order of the list. Files you add one at a time go to the end of the list, so the most reliable method is to add them one by one in page order. When you select several files at once, your phone or computer decides the order (often by name, but not always), so always check the list before converting.

To move a page, remove it with its × and add it again: it goes to the end. If the PDF is already made and one page is in the wrong place, you can reorder it with the split PDF tool, which outputs pages in the order you type them. For a four-page PDF where the last page should come first, type 4,1-3.

Naming files with number prefixes such as 01-form.jpg, 02-marksheet.jpg, 03-id.jpg also helps, because most pickers sort by name and you can see at a glance which is which.

Page size and margins: what the tool does

Each PDF page is made exactly the size of its image, with the picture filling the page edge to edge. There is no A4 setting, no margin option and no "fit to page" choice. The converter treats one pixel as one point (1/72 of an inch), so a 1600 × 1200 px photo becomes a page about 56 × 42 cm, and a 4000 × 3000 phone photo a page about 141 × 106 cm.

That sounds odd, but it rarely matters. PDF viewers and upload portals scale pages to fit the screen, and nobody sees the page size unless they print. When you do print, choose "Fit to page" (or "Fit to printable area") in the print dialog and each page shrinks onto your A4 sheet. If you need true A4 pages with white margins, for example to print a set of receipts neatly, use one of the built-in methods further down: they let you choose the paper size.

If your images have different shapes, each page will have its own size. That is normal for a PDF and does not cause problems on upload.

Keep the PDF small for uploads

The converter puts each JPG into the PDF as it is, without compressing it again, so the PDF is roughly the total size of your images plus about 1 KB per page. PNG images are stored in a lossless form that is far bigger for photos. Our test with a photo resized to 1000 × 750 px:

So the way to a small PDF is to shrink the images before converting. Running the finished PDF through the compress PDF tool will not help here: it only tidies the file's structure and does not recompress images, and in our test the 130 KB PDF came out at exactly 130 KB.

A worked example: a portal allows one PDF of up to 1 MB, and you have four phone photos of documents.

1. Budget: 1,000 KB ÷ 4 pages = 250 KB per page. Leave a margin and aim for 200 KB each.
2. Run each photo through the resize image in KB tool with the "Under 200 KB" preset.
3. Convert the four results: 4 × 200 KB plus about 4 KB comes to roughly 800 KB, safely under 1 MB.

For document photos, keep the long side at about 1200–1600 px if you can; small print usually stays readable at that size. If a portal's limit is very tight, see how to compress a PDF to 100 KB or less and the guide to compressing images to 20, 50 or 100 KB.

Fix a page that comes out sideways

Phones often save a photo lying on its side and add a small note inside the file saying "rotate this when displaying". Your gallery and browser obey the note, so the photo looks upright. The PDF converter copies the JPG into the PDF untouched, and PDF viewers ignore that note, so the page can appear sideways. We reproduced this with a test photo.

The fix is to "bake in" the rotation before converting: open the photo in the image compressor, set quality to 85–90 and download the result. The compressor draws the photo the right way up and saves a fresh JPG, which then converts correctly. The rotate PDF tool is less suitable here because it turns every page of the PDF 90° clockwise, not just the sideways one.

Built-in alternatives on Windows, iPhone and Android

Your device can also make a PDF from photos without any website. These methods let you choose a paper size such as A4, which the converter above does not, though some may recompress your images.

• Windows 10 and 11: select the images in File Explorer, right-click and choose Print (on Windows 11 it is under "Show more options", or hold Shift while right-clicking). Choose Microsoft Print to PDF as the printer, pick A4 and a layout such as "Full page photo", untick "Fit picture to frame" if edges are being cut off, then click Print and name the file. Pages follow the File Explorer sort order, so rename files to control it.
• iPhone and iPad: in the Files app, tap the More button, tap Select, choose the images, then tap the More button at the bottom and choose Create PDF. Save photos from the Photos app to Files first. Menu names can differ slightly between iOS versions.
• Android: open the photo in Google Photos or your phone's Gallery app, open the three-dot or Share menu and choose Print, then pick Save as PDF at the top instead of a printer and tap the save button. Wording varies by phone maker, and some Gallery apps have their own "Create PDF" option.
• Mac: select the images in Finder, Control-click and choose Quick Actions > Create PDF.

Finishing the document

Need the photo pages in the same file as PDFs you already have, such as a downloaded certificate? Convert the images first, then join everything with the merge PDF tool; the guide to merging PDF files explains the order rules. Before you submit, open the final PDF once and check every page is there, upright and readable.

Frequently asked questions

How do I combine several JPGs into one PDF?

Add all the images to the JPG to PDF converter, check the order in the list, and press Convert to PDF. You get one PDF with one image per page.

How do I make a JPG to PDF file under 1 MB or 500 KB?

Divide the limit by the number of pages, leave some margin, and shrink each image to that size before converting. The PDF will be about the total of the images.

Can I convert JPG to PDF without uploading my documents?

Yes. This converter and the built-in Windows, iPhone and Android methods all work on your own device. The converter loads its PDF engine from this website the first time you use it, and your images stay in your browser.

Why is my PDF page sideways when the photo looked fine?

The phone stored the photo on its side with a "rotate when shown" note that PDF viewers ignore. Re-save the photo through the image compressor first, then convert again.

Can I make A4 pages with margins?

Not with this converter, which makes each page the size of its image. Use Microsoft Print to PDF on Windows, or Print and Save as PDF on Android, and choose A4.

How do I turn a PDF back into JPG images?

Use the PDF to JPG converter; the guide to converting PDF to JPG covers resolution and quality.

Sources: How-To Geek and other guides to Windows Print Pictures with Microsoft Print to PDF; iPhone Files "Create PDF" steps as described in Adobe's and other published guides; Google Chrome Help, "Print from Chrome" (Save as PDF on Android); Apple macOS User Guide, Quick Actions in Finder; PDF sizes measured with the site's converter in Chrome, October 2026.