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Convert JPG and images to PDF

Convert JPG and images to PDF
Kroma

Drop your images (JPG, PNG, WebP, GIF), put them in order, choose the page size (Letter, A4, or image size), the orientation, and the margins, then click Create PDF. Each image becomes one page. The conversion happens in your browser, so your photos are never uploaded anywhere.

  • ✅ Free
  • 🔒 No sign-up
  • 📱 Works on mobile
  • ⚡ Instant results
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🔒 Everything runs in your browser. Your data and files never leave your device.

📌 Key facts

  • Each image becomes one page of the PDF: five photos make a five-page PDF.
  • JPG and PNG files go into the PDF as they are, with no recompression and no quality loss.
  • Page sizes: Letter (8.5 × 11 in), A4 (210 × 297 mm) or image size.
  • At 200 dpi, a Letter page is about 1,700 × 2,200 pixels, which is enough for a readable document.
  • The conversion happens in your browser, so your photos are never uploaded.

How to turn images into a PDF

Each image becomes one page. JPG and PNG files are placed into the PDF as they are, with no recompression, so there is no quality loss. Other formats (WebP, GIF, BMP), phone photos that carry an EXIF orientation, and images you rotate are redrawn in your browser first.

  1. Add the images in any order.
  2. Reorder by dragging and rotate any that are sideways.
  3. Set the page size, orientation, and margins, then create the PDF.

Page sizes and margins

SizeDimensionsUse
Letter8.5 × 11 in (612 × 792 pt)Standard in the US and Canada
A48.27 × 11.69 in (210 × 297 mm)Standard in Europe and most of the world
Image sizepixels × 0.75 = pointsA page fitted to each image, no white border

\[ \text{scale} = \min\left( \dfrac{\text{usable width}}{\text{image width}} ,\ \dfrac{\text{usable height}}{\text{image height}} \right) \]

The image is scaled up or down to fit the page while keeping its proportions, then centered. With automatic orientation, an image wider than tall gets a landscape page.

Tips for a sharp, light PDF

  • Photograph documents flat, in daylight, so the text stays readable.
  • Aim for 150 to 200 dpi for documents: a Letter page at 200 dpi is about 1,700 × 2,200 px. Beyond that the PDF gets heavier with no visible gain.
  • Use Image size for screenshots or posters you don't want resized.
  • If the PDF is too big to upload, run it through the Compress PDF tool.

How to convert JPG to PDF: step by step

First, drop your photos into the upload area. Then set the page options. Finally, click the create button to convert JPG to PDF.

  1. First, add one or more JPG, PNG, WebP or GIF files.
  2. Then drag the thumbnails to set the page order.
  3. Next, rotate any sideways image with the rotate button.
  4. After that, pick Letter, A4 or "image size", plus orientation and margins.
  5. Finally, download the PDF.

For one document built from many photos, this JPG to PDF step saves you from sending ten attachments. That way the reader opens a single file and sees the pages in order.

Image resolution and pixels per page

Sharpness depends on your photo resolution. Usually 150 to 200 dpi is enough to read text. Beyond that, the file gets heavier with no visible gain.

ResolutionPixels on a Letter pageUse
100 dpi850 × 1,100on-screen reading
150 dpi1,275 × 1,650everyday documents
200 dpi1,700 × 2,200fine text, forms
300 dpi2,550 × 3,300careful printing

If a phone photo is 4,000 pixels wide, it already exceeds a Letter page at 300 dpi. In that case your JPG to PDF file stays sharp, but it weighs more.

When to turn a JPG into a PDF

  • To hand in homework: a JPG to PDF conversion gives your teacher one file in the right order.
  • To attach supporting papers, because many upload forms accept a PDF but refuse several images.
  • To archive receipts: a PDF is easier to file and find than a pile of photos.
  • To show a portfolio, since each picture fills a full page.

After you convert JPG to PDF, you can merge this PDF with others or pull out a few pages. If the file is over an upload limit, run it through the tool to compress a PDF. To go the other way, use PDF to JPG. Finally, you can add your electronic signature to the finished document.

Common mistakes when you convert a JPG to PDF

  • Shooting at an angle: the text warps, so hold the phone straight above the page.
  • Forgetting the order: check the thumbnails before you create the file, because fixing it later means starting over.
  • Keeping margins on a poster: pick "image size" instead.
  • Sending 12-megapixel photos without a second thought, or the PDF gets too big for email.

In practice, one minute of prep saves most of the rework. Then your JPG to PDF file is ready to send, and you can check the result first. Also, keep the original photos: they help if you want to rebuild the file.

3 real-life examples

1

A photographed form

You took 3 photos at 3.5 MB each (front, back, attachment). On Letter with 0.4 in margins, the PDF has 3 pages and weighs about 10.5 MB because the JPGs go in without recompression. Compress it afterward to get under 5 MB.

2

A phone photo taken sideways

Your phone saved the photo with an EXIF "rotated 90°" flag, and some apps show it lying down. The tool reads that flag and redraws the image upright, so the page comes out the right way.

3

A 1,080 × 2,400 px screenshot

With Image size and no margin, the page measures 810 × 1,800 points (1,080 × 0.75 and 2,400 × 0.75), about 11.25 × 25 in, so the whole screenshot sits on one page with no cutoff.

Frequently asked questions

How do I convert a JPG to PDF for free?
Drop your JPG in the box above, set the page size, and click Create PDF. The file downloads right away with no sign-up and no watermark.
How do I put several photos into one PDF?
Add all the images, drag them into the order you want, and create the PDF. Each image gets its own page. You can merge the result with other PDFs afterward.
Do images lose quality in the PDF?
Not JPG and PNG files, which go in without recompression. Only rotated images or ones converted from WebP, GIF, or BMP are redrawn, at 92% JPEG quality or as PNG.
Are my photos uploaded to a server?
No. Your browser builds the PDF, so the images are neither uploaded nor stored. That suits ID cards and forms.
Should I pick Letter or A4?
Letter for the US and Canada, A4 for most other countries. For images that shouldn't be resized, choose Image size.

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