How to Merge Scanned Images and PDF Files Into One Document

You are working with a mix of physical and digital documents.

Some of your documents already exist as PDFs — downloaded forms, digital invoices, or generated reports. Others are physical papers that you have scanned with your phone, a scanner app, or a desktop scanner. Those scans are typically saved as JPG images.

You now need to combine everything — scanned JPGs and existing PDFs — into one organized document.

A Common Real-World Problem

Imagine you are preparing a complete record for an auditor, a client, or an HR team.

You have:

• contract.pdf — a digital PDF you already had
• scan-page-1.jpg — a physical form you scanned
• scan-page-2.jpg — another scanned page
• invoice.pdf — a PDF invoice
• receipt-scan.jpg — a scanned paper receipt

You need to send all of this as one PDF document.

Why Merging Scanned Images With PDFs Can Be Tricky

Standard PDF merge tools typically only accept PDF files. If you try to upload a JPG to a basic PDF merger, it will reject the file.

Many guides suggest a two-step approach: first convert all your JPG scans to PDF, then merge the resulting PDFs together. That works, but it takes extra steps.

BunnyPDF's JPG and PDF to PDF converter removes that extra step. You can upload your scanned JPGs and your existing PDFs together, arrange them in the correct order, and generate one combined document directly.

How to Merge Scanned Images and PDF Files

1. Step 1: Collect all your files. Put your scanned JPGs and existing PDFs in the same folder.
2. Step 2: Decide the correct page order. This is important for document integrity. For example: cover PDF first, then chronological scanned pages, then supporting PDFs.
3. Step 3: Go to BunnyPDF's JPG and PDF to PDF converter.
4. Step 4: Upload all files — JPGs and PDFs — together.
5. Step 5: Drag and drop to arrange them in the correct order.
6. Step 6: Create and download the combined PDF.
7. Step 7: Open the PDF and verify every page before sending.

Common Scenarios

Medical or insurance records

Combine a downloaded insurance policy PDF with scanned prescription images and medical report PDFs into one complete record.

Legal and compliance documentation

Merge a digital agreement PDF with scanned witness signature pages and supporting document PDFs into one submission file.

Expense reports

Combine a digital expense summary PDF with scanned physical receipt images into one report for accounting.

Student records

Merge downloaded certificate PDFs with scanned physical document images (like marksheets or ID cards) into one application package.

Property and tenancy documents

Combine a digital tenancy agreement PDF with scanned utility bill images and identity document scans into one file for a landlord or letting agent.

Checking Scan Quality Before Combining

Scanned images can vary significantly in quality. Before combining, check:

• Orientation: Make sure no scanned pages are sideways or upside down.
• Readability: Text in scanned documents should be clearly legible.
• Completeness: Check that all required pages are included in the correct order.
• File count: Count your input files and verify the final PDF has the correct number of pages.

What If the Combined PDF Is Very Large?

Scanned images can produce large files, especially when they are high-resolution photographs taken with a phone camera.

After combining, if the file is too large to share or upload, use BunnyPDF's Compress PDF tool. This can significantly reduce the file size while keeping text and images readable.

Typical workflow:

Scanned JPGs + PDFs → Combine → Compress → Share

Frequently Asked Questions

Related PDF Tools

• JPG and PDF to PDF Converter — Merge scanned images and PDFs
• Merge PDF — Combine multiple PDF files
• Compress PDF — Reduce large scanned PDF size
• Organize PDF — Rearrange or remove pages
• JPG to PDF — Convert scanned images to PDF