Convert Image to PDF
Convert your JPG and PNG images into a PDF document.
About Image to PDF
The Image to PDF Converter compiles multiple photos, screenshots, and graphics into a clean, multi-page PDF document entirely within the browser using the pdf-lib JavaScript library. Each uploaded image (JPEG, PNG, or WebP) is decoded into a raw bitmap, embedded as a PDF XObject image stream, and placed onto an appropriately sized PDF page that matches the image's native aspect ratio. Users can drag and drop thumbnail previews to reorder pages before finalizing the document. The converter supports mixing different image formats and resolutions within a single PDF, automatically scaling each image to fit standard page dimensions (A4, Letter, or custom) while preserving the original pixel resolution for crisp rendering when zoomed or printed. Because the entire assembly pipeline runs in client browser memory via pdf-lib's in-memory PDFDocument builder, confidential documents such as scanned contracts, insurance claims, medical receipts, and tax records are never transmitted to any external server.
Common Practical Use Cases
Packaging photographed documents into an expense report PDF
Creating a multi-page design portfolio from PNG artwork
Assembling scanned receipts for tax filings
Compiling medical records or insurance claim photographs into a single submission document
Combining whiteboard photos from meetings into structured meeting notes
How to Use Image to PDF
- 1Upload one or more image files.
- 2Drag thumbnails to adjust page order.
- 3Click "Convert to PDF" to compile the document.
- 4Download your combined PDF file.
Practical Worked Examples
Assembling 4 Scanned Pages
page1.jpg + page2.jpg + page3.png + page4.jpg
ScannedDocument.pdf (4 pages)
Explanation: Consolidates separate photos into a structured PDF.
Supported Formats & Specifications
Accepted Inputs:
- JPG, PNG, WebP image formats
Generated Outputs:
- Multi-page PDF document (.pdf)
Key Features & Technical Capabilities
- Merge multiple JPG, PNG, and WebP images into one PDF
- Drag and drop reordering of pages
- Preserves full image resolution
- Runs locally in browser memory
Under the Hood: Browser Processing Architecture
- Embeds raw image bytes into PDF XObject streams using pdf-lib.
- Each page is sized to match the source image aspect ratio, preventing stretching or letterboxing.
- JPEG images are embedded directly without re-encoding; PNG images are embedded with their Deflate-compressed streams intact to preserve lossless quality.
Browser Limits & Edge Cases
- For extremely large batches of 50+ photos, compress images first to avoid large PDF file sizes.
Common Mistakes to Avoid
- Uploading pages in arbitrary order without checking thumbnail previews.
Client-Side Canvas Processing & Image Security
Hardware-Accelerated Canvas EngineWhen using Image to PDF, image decoding, raster manipulation, and compression occur locally via HTML5 Canvas Web APIs. Image data is processed by your device hardware without transmitting bytes to external servers. Standard static web assets and client runtime scripts are delivered securely via CDN over encrypted TLS (HTTPS).
Frequently Asked Questions
Can I mix JPG and PNG files in the same PDF?
Yes. You can combine JPEG, PNG, and WebP images in any order within a single PDF document. Each image is embedded in its native format to preserve quality.
What page size does the output PDF use?
By default, each PDF page is sized to match the original image dimensions, preserving the native aspect ratio. This ensures images are displayed at their full resolution without cropping or distortion.
Can I password-protect the resulting PDF?
This converter focuses on image assembly. To add password protection after creating the PDF, use our Protect PDF tool to encrypt the document with AES-256 security.