Image to PDF Converter - Turn JPG, PNG, WebP and AVIF Pictures into One PDF

Convert image to PDF whatever format the picture is in

Phones no longer save everything as JPG. A screenshot arrives as PNG, a download from a website as WebP, a recent camera shot or a saved social post as AVIF, and a forwarded chat image as something else again. This image to PDF tool accepts all of them in one batch and puts each picture on its own page of a single PDF, in the order you choose.

It is the general-purpose member of a small family. If every file you have is a plain JPG or PNG, a narrower converter does the same job; this one is for the mixed folder, where you would otherwise have to convert pictures one at a time before they could be combined. You can also ask for a separate PDF per picture instead of one document.

How to convert multiple images to one PDF

1. 1
   Drop your pictures onto the upload area or click it to browse. Select as many as you like; adding more later appends them to the list.
2. 2
   Put them in order. Drag a row up or down, or use the small up and down arrows beside each file name. The list order is the page order. Use the cross to remove a picture.
3. 3
   Choose a Page size: A4 (most portals), US Letter, Legal, or Fit page to the image.
4. 4
   Set the Orientation: Match the image, Portrait or Landscape.
5. 5
   Adjust the Margin (pt) if you want one. It starts at 24 points; 72 points is one inch, and 0 runs the picture to the edge.
6. 6
   Under Give me, pick One PDF with every image or A separate PDF for each image, then press Make PDF and download the result.

What happens to each picture

PDF files can store JPEG and PNG data directly. When your picture is one of those, its original bytes go into the PDF untouched: the JPEG is not recompressed, and the PNG keeps its transparency. That is why the PDF comes out about as large as the pictures you put in, plus a couple of KB of structure. In a test with a 33 KB JPG and a 2.6 KB PNG, the finished PDF was 38 KB.

Every other format goes through the browser first. The picture is opened by the browser itself, drawn onto a canvas filled with white, and saved as a JPEG at 0.92 quality, and that JPEG is what is embedded. The consequence is worth knowing: a WebP or AVIF with a transparent background comes out with a white one, and a picture the browser cannot open at all is reported by name instead of producing a blank page.

Then the page is laid out. The tool picks a sheet, shrinks the picture until all of it fits inside the margins, and centres it. It never crops. With the orientation on Match the image, a picture wider than it is tall gets a landscape sheet and anything else gets a portrait one.

Worked example: three pictures on A4 pages

Imagine a bank KYC pack made of three images: a 3024 x 4032 portrait photo of a letter, a 1080 x 1920 phone screenshot, and a 4000 x 3000 landscape photo of a cheque. With A4, Match the image and the default 24 pt margin, an A4 sheet measures 595.28 x 841.89 points, so the usable area on a portrait page is 547.28 x 793.89.

The arithmetic for the first row: the scale is the smaller of 547.28 / 3024 (0.1810) and 793.89 / 4032 (0.1969), so 0.1810 wins and the photo prints 547.28 wide by 729.71 tall, with a gap of about 56 points above and below. The screenshot is the opposite case. Its tall shape is limited by height, so it ends up narrower than the page, with about 74 points of white on each side.

Resolution matters if the PDF will be printed or scanned again: anything above about 150 pixels per inch is fine for reading, and the phone photos here are well above it. If you set the margin to 0, the 3024 x 4032 photo prints 595.28 x 793.71 points, with a thin 24-point band of white at the top and bottom, because a 3:4 photo is not the same shape as A4.

Fit page to the image, and when to avoid it

Fit page to the image makes each page exactly as large as its picture, with the pixels converted to points at 96 pixels per inch (so a picture 1000 pixels wide becomes 750 points). A 1000 x 300 banner gives a 750 x 225 point page, and a 600 x 200 signature gives 450 x 150.

That is handy for small graphics, but it is a poor choice for phone photographs. A 3024 x 4032 photo becomes a page of 2268 x 3024 points, which is 31.5 by 42 inches. Viewers cope, but upload forms and printers often will not. For anything that has to be read or submitted, stay on A4 or Letter. The margin still applies in this mode, so a value above 0 shrinks the picture inside its own page and leaves a border.

One PDF per picture

Some portals want each document uploaded separately: the 10th marksheet in one slot, the 12th in another, the address proof in a third. Choose A separate PDF for each image and every picture becomes its own PDF, named after the original file (certificate.png turns into certificate.pdf). The results appear as a list, with a Download all button that packs them into a ZIP.

If you chose this option with only one picture in the list, the tool simply makes a single PDF called images.pdf. Rename it before uploading, since a portal's reviewer sees whatever file name you send.

Where this tool is useful

• Combining screenshots of an online statement, an application page and a payment receipt into one file for a reimbursement or visa application.
• Turning photographed pages of a handwritten assignment or notes into a single submission, using the order of the list as page order.
• Packing WhatsApp-forwarded certificates, which often arrive as odd formats, into a PDF a college portal will accept.
• Turning a photographed handwritten application or signed letter into a PDF you can attach to an email.
• Putting product photos or design mock-ups into a deck-like PDF to send to a client who cannot open the source files.
• Archiving bills and receipts photographed on a phone, one PDF per bill.

Screenshots, chat images and downloads

Screenshots deserve a note of their own. A phone screenshot is tall and narrow, so on an A4 page it prints small with white strips on both sides, as the worked example shows. That is correct behaviour and keeps every pixel visible, but if the PDF is meant for reading on a phone you may prefer Fit page to the image, which gives each screenshot a page of its own shape with no wasted space.

Images saved from chat apps are often downsized and carry little detail, so the PDF cannot be any sharper than they were. When the original file is still available in your gallery or on the sender's phone, ask for that one instead. Pictures downloaded from the web in WebP or AVIF form are a natural fit here, since this is the page that converts them without a separate step.

Tips for a clean PDF

• Check the order before you press the button. Reordering afterwards means a second tool, and the arrows are quicker.
• Crop and straighten pictures first. The tool places the whole image on the page and cannot trim a table edge or a thumb from the corner.
• If a picture is sideways, rotate the image before adding it. Rotating afterwards with rotate the pages works, but it turns the whole page, not just the picture.
• Keep photographed documents bright and flat. A shadow across a page survives into the PDF unchanged.
• For a long list of pictures, convert in batches of a few dozen so that the browser does not run short of memory, then join the parts with merge the PDFs.
• Use 0 margin only for pictures that already have their own white border, such as a scanned page.

Mistakes to avoid

• Expecting two pictures on one page. Each picture gets a page of its own, so the front and back of an ID card become two pages, not one.
• Choosing Fit page to the image for phone photos and then wondering why the PDF opens enormous.
• Sending a huge file to a portal with a size limit. The PDF is as big as your pictures are. Shrink them first with compress the images, or squeeze the finished PDF to a number with hit an exact size.
• Assuming the PDF is searchable. It is made of pictures, so the words in it cannot be selected or found with search.
• Dropping a PDF into the picture box. This tool is for images only; to join PDFs, use a merge tool.

Limits worth knowing

• There is no fixed file count or size cap for pictures here, but the browser's memory is the real ceiling. Hundreds of 12-megapixel photos in one go may stall a modest laptop or phone.
• No editing happens: there is no per-picture rotation, no brightness change, no edge detection or perspective correction. The photographed pages version of this tool uses the same layout engine and has the same limits, so tidy photographs in your phone's gallery editor first.
• An empty first file is blocked before conversion, and a picture the browser cannot decode produces an error naming the file.
• Page sizes are limited to A4, US Letter, Legal and fit-to-image. There is no A3 or A5 option on this page.
• Output has no password, bookmarks or text layer. It is a plain picture PDF.

Private, free, and finished in the browser

The pictures are read from your device and assembled into a PDF by the pdf-lib library running in your own tab. They are not uploaded to a Jobsixo server, there is no account, and the result carries no watermark. When you want the pictures back out of a finished document, export the pages does the reverse.

Which converter should you open?

Use this page for mixed or newer formats, and when you want a hands-off result that opens on any device. If your files are all ordinary JPG photographs, the JPG-only converter runs the same engine with a narrower file picker.