iLocalPDF

JPG to PDF Converter

Turn JPG, PNG and WebP images into one PDF in your browser. Your images are not uploaded anywhere.

  1. 1 Select your images or drop them on the page
  2. 2 Reorder them with the arrows and choose the page size
  3. 3 Click Convert to PDF and download the file

How to convert JPG to PDF

  1. Click the upload area, or drag your images onto it. You can add JPG, JPEG, PNG and WebP files together.
  2. Check the numbered thumbnails. Use the arrows under each image to move it earlier or later, and the cross to remove it.
  3. Choose a page size. Pick Same as image to keep each picture at its own proportions, or A4 for a document you plan to print or submit.
  4. Click Convert to PDF. The file is saved to your device as images.pdf.

The page order in the PDF is the order of the thumbnails, so a quick look before converting saves a second attempt.

Convert JPG to PDF without uploading your files

Many converters send your images to a remote server, process them there, and return the result. That is convenient, but it means a copy of your file travels over the internet. For an ID card, a signed form or a medical scan, many people would rather avoid that.

This tool works differently. The page loads the code once, and the PDF is assembled inside your browser. The images are read from your device, placed into the PDF in memory, and the result is handed back to you as a download. There is no upload step because there is nothing on our side to receive a file.

How to check that nothing leaves your device

You do not have to take this on trust. You can check it in about a minute:

  1. Open this page and press F12 (or right-click and choose Inspect) to open the developer tools.
  2. Go to the Network tab and clear the list.
  3. Add your images and click Convert to PDF.
  4. Look at the requests that appear. You should see no request that sends your image data anywhere. Any requests you do see will be ordinary page assets or analytics, not your files.

You can go further: once the page has loaded, turn off your internet connection and run the conversion again. If it still works, the processing is happening locally.

Does it work offline?

The conversion itself does not need a connection, because it runs in your browser. The page and its code do need to load first. Write this section after PWA is enabled and tested: say exactly what works offline and after which first visit.

Using it on your phone

The tool works in a mobile browser. Tap the upload area to choose photos from your gallery or take new ones. Some tips from testing:

  • Photos straight from a modern phone camera are large. Twenty of them can use a lot of memory, so on an older phone convert in groups of 10 or fewer. Replace with your real test result.
  • If a photo appears rotated in the PDF, tell us which phone and format it came from. Rotation data stored inside photos is handled differently by different devices, and we would like to fix it. Test with iPhone and Android photos before publishing this line.

Image quality and file size

JPG and PNG files are embedded into the PDF directly. The pixels are not recompressed, so what you see in the PDF matches your original. The flip side is that the PDF size is close to the total size of your images. Add a real example: e.g. "5 photos totaling X MB produced a Y MB PDF".

WebP is a special case. The PDF format does not store WebP, so the tool first converts each WebP image to PNG. The picture stays sharp, but a PNG can be considerably larger than the original WebP.

If the final file is too big to email or upload to a form, run it through a PDF compressor afterwards. Keep in mind that compressing images always trades some quality for size.

A4 or original size?

Same as image makes every page match its picture exactly. It suits photo albums and screenshots, and it avoids any white borders. The downside is that pages can differ in size if your images do, which looks uneven when printed.

A4 places each image on a standard A4 sheet, centered, with a small margin. Images larger than the page are scaled down to fit, and small images keep their size rather than being stretched. It is the better choice for documents you will print or send to an office.

Common problems

  • A file is rejected. Only JPG, PNG and WebP are accepted. For HEIC photos from an iPhone, convert them to JPG first.
  • The conversion fails. One of the images may be damaged. Remove images one at a time to find it.
  • The browser becomes slow. You are probably converting too many large images at once. Try smaller batches.

Related tasks

After creating your PDF you may want to merge it with other documents, compress it or rotate its pages. Those tools are linked below as they become available.

FAQ

Are my images uploaded to a server?

No. The PDF is created by your browser using JavaScript. You can verify it yourself in the Network tab of your browser's developer tools, where no request carries your images.

How many images can I convert at once?

The tool accepts up to 100 images per PDF. The practical limit is your device's memory, so very large photos on an older phone may need to be converted in smaller batches.

Does converting reduce the quality of my JPG images?

JPG files are embedded in the PDF as they are, without being compressed again. PNG images are also embedded directly. WebP images are first converted to PNG, which is lossless but can make the PDF larger.

Can I choose the page size?

Yes. "Same as image" gives each page the exact size of its image. "A4" centers each image on an A4 page with a small margin and scales it down if it is larger than the page.

Why is my PDF larger than my images combined?

This usually happens with WebP files, which are converted to PNG before being added. If size matters, use JPG sources or run the finished PDF through a PDF compressor.