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PDF to images

Why does a PDF turn into several image files?

By DeckleUpdated

A PDF turns into several image files because an image holds one picture, and each PDF page becomes its own picture. PDF to JPG and PDF to PNG make one image per page, so a 12-page PDF gives 12 files. You can download them together as a ZIP, or export only the pages you need with Choose pages.

PDF to JPG

Same physical page, more pixels

150 DPI

Letter: 1,275 × 1,650 pixels

300 DPI

Letter: 2,550 × 3,300 pixels

Double each dimension → four times the pixels

Example calculation · nominal sizes for an 8.5 × 11-inch page. Actual exports depend on page geometry and rounding.

What you get from a multi-page PDF

Each selected page becomes one image, named after the PDF with a three-digit page number:

PDF Pages selected Files you get
invoice.pdf, 1 page All pages invoice-001.jpg
report.pdf, 12 pages All pages report-001.jpg to report-012.jpg
report.pdf, 12 pages 3, 7 report-003.jpg and report-007.jpg
manual.pdf, 240 pages 100-102 manual-100.png, manual-101.png, manual-102.png

The numbers are padded with zeros so the files sort in page order in any folder. When there is more than one image, the result screen offers Download all as a ZIP named after the format, such as jpg-images.zip, and a download button beside each image. Unzip it to get the separate images.

Why the pages are not joined into one image

JPG and PNG are single-picture formats. There is no standard way to put several pages in one JPG, so there are two options: one file per page, or one very tall image with every page stacked. Deckle uses the first, because a stacked image quickly becomes unusable:

  • A 12-page A4 report at Standard stacked into one image would be about 1240 × 21,000 pixels, around 26 megapixels. That is over the 16-megapixel image limit on a typical computer.
  • Very tall images are hard to view. Phones and many websites shrink them until the text is unreadable.
  • Upload forms that ask for an image usually expect one page, not a whole document.

How to get fewer files

  1. Open PDF to JPG or PDF to PNG and choose your PDF, or drop it onto the page.
  2. Under Pages, choose Choose pages.
  3. In Page numbers, type only the pages you need, such as 1 or 2, 5.
  4. Check the summary: it shows the number of images before you export, such as "2 images · 150 DPI".
  5. Choose Export images and download.

For a single page, see how to save one page of a PDF as a JPG. For several scattered pages, see exporting selected pages.

When you need one file, not many

Ask what the recipient will do with it. If they need the whole document in one file, a PDF is that file. Instead of converting, try:

  • Send the PDF. Most forms, email clients and chat apps accept PDF.
  • Send part of it. Split PDF extracts a page range into a smaller PDF that keeps selectable text.
  • Send the ZIP. If images are required, the ZIP from Download all is one attachment.

Example: a visa portal asks for "a scan of your bank statement as an image" and accepts one file. The statement is three pages. Check whether the portal accepts PDF; if it does not, ask whether it wants only the first page, and export that page with Choose pages.

Tips

  • Read the image count before you export. The summary at the top of the settings tells you how many files you will get.
  • Keep the numbered names. They tell you which page each image came from; rename only once you are sure.
  • Unzip before uploading. Most forms do not accept a ZIP in an image field.
  • Use the PDF when order matters. A set of separate images can be reordered by accident; a PDF cannot.

Frequently asked questions

Can I convert a multi-page PDF into one JPG?

No. Deckle makes one image per page. Export the pages you need, or send the PDF.

How do I download all the images at once?

When the export makes more than one image, choose Download all on the result screen to save a ZIP.

Why are my files named with 001, 002 and so on?

The number is the page position in the PDF, padded with zeros so files sort correctly.

Can I get one image of only the first page?

Yes. Choose Choose pages, type 1, and choose Export images.

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