How to Convert Images to PDF — Combine Multiple Photos into One PDF

Many government portals and online applications require documents in PDF format. But when you scan documents using your phone, you usually get individual image files (JPG or PNG). Converting these images to PDF and combining them into a single document is a common need.

When You Need Image to PDF Conversion

Scanned documents: Phone camera scans of marksheets, certificates, ID cards, and letters are saved as images. Most portals require PDF uploads.

Multiple pages: A 10-page document scanned with a phone camera gives you 10 separate image files. You need them as one PDF.

Professional presentation: PDFs look more professional than raw image files. They maintain consistent formatting across devices and are easier to print.

How to Convert Images to PDF

1. Open the Image to PDF tool.
2. Upload images — Drag and drop all the images you want to convert. They can be JPG, PNG, WebP, or other formats.
3. Arrange order — Drag images to arrange them in the order you want them to appear in the PDF.
4. Set page size — Choose A4 (most common), Letter, Legal, or custom size.
5. Choose orientation — Portrait for documents, landscape for wide images.
6. Convert — The tool creates a PDF with each image on a separate page.
7. Download — Your PDF is ready for submission.

Tips for Best Results

Scan at the right resolution. For text documents, 200-300 DPI gives the best balance of quality and file size. For photographs, 150 DPI is usually sufficient.

Crop before converting. Remove extra borders and shadows from phone camera scans. Clean images produce smaller and better-looking PDFs.

Watch the file size. Government portals often have upload limits (100KB to 5MB). If your PDF is too large, use our PDF Compressor to reduce the size.

Use the correct page size. For Indian government documents, A4 is the standard. For US documents, use Letter size. Using the wrong page size can cause the image to be stretched or have uneven margins.

Image to PDF vs Scanning Apps

Phone scanning apps like CamScanner and Adobe Scan are convenient, but they add watermarks (free versions), upload your documents to their servers, require app installation, and sometimes compress images too aggressively.

Our browser-based tool has no watermarks, works without any app installation, keeps your files completely private (no server uploads), and gives you full control over quality and page settings.