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Convert Images to PDF Free Online — JPG, PNG & WebP to PDF

Updated June 20265 min read

Need to send multiple photos as one document? Convert a scanned receipt to PDF for expenses? Combine product images into a portfolio? Converting images to PDF is a common task for students, professionals, and businesses worldwide. Here's how to do it instantly for free.

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When Do You Need to Convert Images to PDF?

Common use cases include: submitting scanned documents to government portals (Aadhaar, passport applications, HMRC, IRS), emailing receipts to accountants, creating photo portfolios, combining multiple screenshots into a report, sharing ID proofs for bank account opening, and attaching multiple photos to legal documents.

How to Convert Images to PDF

1. Open Formly's Image to PDF tool. 2. Upload your JPG, PNG, or WebP images by drag and drop or clicking Browse. 3. Reorder the images using the up/down arrows to set the page order. 4. Choose your page size: A4 (international standard), US Letter, or Fit to Image. 5. Choose orientation: Portrait or Landscape. 6. Select margin: None, Small, or Medium. 7. Click "Convert to PDF" — the PDF is generated in your browser. 8. Download the PDF.

A4 vs Letter vs Fit to Image

A4 (210 × 297 mm) is the international standard used in the UK, Europe, India, Australia, and most of the world. US Letter (8.5 × 11 inches) is the US standard. "Fit to Image" sizes each page exactly to the image's dimensions — useful for photos and screenshots where you don't want whitespace borders.

Document Submission Requirements by Country

India (government portals): Most require PDF under 1 MB, A4 size. UK (HMRC, visa applications): A4, 150–300 DPI recommended. US (USCIS, IRS): Letter size preferred. Australia (myGov, immigration): A4 accepted, file size varies. Use the "Fit to Image" option only for informal documents — for official submissions, always use A4 or Letter.

Frequently Asked Questions

Can I add multiple images to one PDF?

Yes. Upload multiple images and they will each become a separate page in the PDF. Use the up/down arrows to control the page order.

Are my images uploaded to a server?

No. This tool uses pdf-lib running entirely in your browser. Your images never leave your device.

What image formats are supported?

JPG, PNG, and WebP. For WebP, the tool automatically converts to PNG internally before embedding in the PDF, since PDF natively supports JPEG and PNG.

What is the maximum PDF size I can create?

There is no hard limit. The PDF size depends on your image sizes and the number of pages. Browsers can typically handle PDFs up to a few hundred MB.

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