How to convert images to PDF
- Drag your images onto the box, or click to browse and select several at once. Each image appears as a numbered page with a thumbnail and its pixel size.
- Check the page numbers. Pages follow the list from top to bottom. To change the order, remove the image that is out of place and add it again, or clear the list and add the files in the order you want.
- Pick a page size: Fit to each image, A4 Portrait or A4 Landscape (see the comparison below).
- Click Create PDF to download
images.pdf.
Which page size should I choose?
Fit to each image makes every page exactly as large as its image, using one PDF point per pixel. A 1200×1600 photo becomes a 1200×1600 point page, with no margins and no white bars. This is ideal for screenshots, photo sets and artwork that will be viewed on a screen, and it lets pages of different sizes coexist. Printing such a file can be unpredictable, because each page has a different size.
A4 Portrait and A4 Landscape put each image on a 210×297 mm sheet (or its landscape version) with a 20-point margin, scaled to fit while keeping its proportions and centered. Small images are enlarged to fill the page, so a low-resolution picture will look soft when printed. Use A4 when the result will be printed, submitted to an office portal, or sent to someone who expects a standard document. The tool does not rotate images to match the page, so a portrait photo on a landscape page simply appears smaller. Pick the orientation that matches most of your images.
What the tool does to your images
Every image is drawn onto a white canvas and stored in the PDF as a JPEG at 92% quality. Three consequences follow:
- Transparency becomes white. A PNG logo with a transparent background will appear on white, which is usually what you want in a document.
- PNGs and WebPs are re-encoded. A sharp screenshot with fine text may show very slight softening around edges compared with the original PNG. For documents this is rarely visible, but for pixel art or text-heavy screenshots check the result at 100% zoom.
- File size follows image size. The PDF is roughly the total of the JPEG data. Ten 4 MB phone photos produce a PDF of tens of megabytes. Shrink the photos first with the image resizer or the image compressor if the file has to go by email.
Practical tips
- Scans and receipts. Photograph pages in good light, straight on, and crop away the table before converting. Use the image cropper for that, and the rotate and flip tool if a page is sideways.
- Name files so they sort.
page-01.jpgandpage-02.jpgsort correctly;page-1.jpgandpage-10.jpgmay not. Confirm the numbering in the list before you build. - HEIC photos from an iPhone. Not every browser can open HEIC. If an image does not show up in the list, convert it first with the HEIC to JPG converter. Files the browser cannot read are skipped silently, so check that the page count matches your image count.
- Animated images. Only a single frame is used, so a GIF becomes one still page.
Is it private and safe?
Yes. The PDF is assembled in your browser on your own device, and your pictures are never uploaded. This is worth caring about when the images are IDs, signed forms, medical documents or contracts. Memory use grows with the number and resolution of the images, so very large batches of full-size photos can be slow or fail on a phone. Build the PDF in smaller groups and join them with Merge PDF.
Related guides
Read more: How to convert a JPG to PDF, combining images into one PDF, turning screenshots into a PDF and scanning documents with your phone camera.
Frequently asked questions
Does the order matter?
Yes. Images become pages in the order they appear in the list, from top to bottom. To change the order, remove the image that is in the wrong place and add it again, or clear the list and add them in the order you want.
What image formats work?
Any image your browser can open, which normally includes JPG, PNG and WebP. Files that the browser cannot read, such as HEIC in many browsers, are skipped, so convert them to JPG first and check that the page count matches.
Which page size should I choose?
Choose Fit to each image for on-screen viewing, because every page matches its picture exactly with no margins. Choose A4 Portrait or A4 Landscape when the PDF will be printed or submitted somewhere that expects a standard sheet.
Will my PNG keep its transparent background?
No. Each image is drawn on a white background and stored as a JPEG, so transparent areas become white. This is usually the right result for a document.
Does it reduce the image quality or file size?
Images are stored as JPEG at 92 percent quality, which is visually close to the original for photos and documents. The tool does not shrink pictures, so a PDF of large photos will be large. Resize or compress the images first if you need a small file.
Can I add images later or remove one?
Yes. Dropping more images adds them to the end of the list, and the Remove button deletes any single page before you create the PDF.
Are my images uploaded?
No. The PDF is built in your browser and nothing leaves your device.
Is it free?
Yes. It is completely free, with no watermark, no sign-up and no limit on pages.