Image to PDF Converter — Convert JPG, PNG & WebP to PDF Online — Core Format
FREE ONLINE UTILITY
Image to PDF Converter
Convert and combine JPG, PNG, and WebP images into a single professional PDF document. Reorder pages, adjust paper sizes and margins, or compress for easy emailing — processed 100% locally in your browser.
Drag & drop images here
JPG, PNG, WebP, GIF, or BMP
Files never leave your device.
✓ 100% Client-Side Privacy: No server uploads, no data storage, zero leaks.
How to Convert Images to PDF in 4 Steps
- Add your images: Click Select Images or drop JPG, PNG, and WebP files into the upload box. Add as many images as you need.
- Arrange page sequence: Use the Up and Down buttons or drag each image thumbnail into your preferred reading order.
- Choose page geometry & margins: Pick standard A4, US Letter, or Fit to Image. Keep Auto orientation to align landscape and portrait photos naturally.
- Download your PDF: Click Generate PDF. Your multi-page document is compiled in seconds directly in browser memory and ready for immediate download.
Why Combine Images into a Single PDF Document?
Sharing multiple loose photos often creates cluttered email attachments, out-of-order gallery uploads, and irregular printing results. Converting your photos to PDF packages them into a universally standardized, paginated file that preserves order, aspect ratios, and visual clarity across all devices, operating systems, and printers.
Key Features of CoreFormat Image to PDF
- Direct JPEG Stream Embedding: In High Quality mode, JPEG images are injected verbatim into the PDF stream without decompression or generational re-encoding, preserving 100% of the original photo crispness.
- Smart Auto Orientation: No more awkward portrait borders around wide landscape photos. Auto mode analyzes each individual image dimension and chooses the ideal paper orientation per page.
- Flexible Page Margins: Select None (0 mm) for edge-to-edge full-bleed photo albums and presentation slides, or Small (5 mm) and Medium (12 mm) for clean office and document printing.
- Built-In File Compression: Toggle Compressed PDF mode and adjust the quality slider to produce lightweight PDFs tailored for email attachment limits, messaging apps, and online job portals.
- Zero Server Uploads: Every single byte of your photos stays strictly inside your device. We use browser-native memory and Web APIs so your invoices, tax receipts, and personal photos remain completely confidential.
Comparison: CoreFormat Image to PDF vs Typical Online Tools
| Feature | CoreFormat (In-Browser) | Traditional Online Converters |
|---|---|---|
| Privacy & Security | 100% Local processing; zero files sent to external servers | Files uploaded to third-party cloud servers |
| Processing Speed | Instant execution via local device hardware | Dependent on network upload and download wait times |
| JPEG Quality Preservation | Verbatim DCT embedding without generational recompression | Frequently forces mandatory re-encoding with artifacting |
| Page Orientation | Smart automatic orientation matched per image | Often locks entire document to a single orientation |
| File Size Limits | Generous browser capacity up to 100 pages per file | Strict file count and file size paywalls |
Frequently Asked Questions
Can I convert different image formats together in one PDF?
Yes. You can freely combine JPG, JPEG, PNG, WebP, GIF, and BMP images in a single batch. CoreFormat automatically decodes and aligns each page seamlessly into the output PDF.
Will my photos lose quality when saved to PDF?
In High Quality mode, JPEG images retain their exact original pixel data and color fidelity. For PNG and WebP files, lossless precision is maintained so diagrams, text receipts, and photos look razor-sharp.
How can I make the resulting PDF file size smaller?
Switch to Compressed PDF mode. You can adjust the quality slider (80% is the ideal balance between crispness and compact size) and choose a maximum resolution limit like 2048 px to downsample huge multi-megapixel camera snapshots.
Is there any limit to the number of pages I can combine?
CoreFormat supports combining up to 100 images in a single session. Because all processing occurs in local RAM, high-end smartphones and laptops handle 50+ page documents with ease.
Are my personal photos or documents uploaded anywhere?
Never. CoreFormat processes all operations client-side via JavaScript and standard HTML5 Web APIs. No images or metadata ever touch a cloud server or external database.