Photos to PDF.
Convert images to PDF locally. JPG, PNG, WebP support. No uploads, secure conversion.High-fidelity conversion without ever sending your photos to a server.
Bank-Grade Privacy
Docs are decrypted and processed strictly within your browser's RAM.
Zero Latency
Skip the upload queue. WASM processing is up to 50x faster than traditional servers.
No Cloud Sync
We have no database. Your documents exist only while this tab is open.
Privacy
Local Worker
Execution
Off-Main Thread
Memory
Auto-Volatile
Mastering Convert
Follow our 100% private workflow. Since DocuStitch uses client-side logic, your document data never touches a remote server.
Select Images
Pick your photos. They are loaded into your browser's RAM via a secure local pointer—never uploaded.
Choose Page Size
Select A4, Letter, or Fit to Image. The engine will scale and center images on the chosen page size.
Generate PDF
Our local engine stitches the images into a professional PDF instantly using your device's CPU.
Why Private Processing?
Comparing DocuStitch vs. Standard Online PDF Tools
- 0% Data leakage risk
- WebAssembly RAM execution
- Immediate session wipe
- Server-side caching
- Unencrypted file transit
- Data harvesting risks
How Local Conversion Works
WASM Processing
The conversion engine runs in a WebAssembly sandbox, using your CPU's native instruction set for high-performance image processing without server latency.
Smart Page Sizing
Choose between A4, Letter, or Fit to Image. Our engine automatically scales and centers your images to fit the chosen page size while maintaining aspect ratio.
Quality Preservation
Images are embedded at their original resolution. We use object stream compression to optimize file size without degrading visual quality.
DocuStitch Image Engine v3.1 • 100% On-Device Conversion • docustitch.app
Professional Image to PDF Conversion with Absolute Privacy
Converting images to PDF is widely used for creating digital portfolios, submitting homework assignments, or merging scanned receipts into a single expense report. While many 'free' online converters exist, most of them monetize your personal photos or store them on vulnerable cloud servers. DocuStitch provides a secure, on-device alternative.
Our Image to PDF tool uses Client-Side Processing. When you select your JPG, PNG, or WebP files, they are read directly into your browser's memory sandbox. Our WASM-powered engine then draws these images into a high-quality PDF structure using your local hardware. This ensures your private photos—whether they are of IDs, family, or business sketches—never touch a remote server. This is the only safe way to convert photos of sensitive identification or financial documents.
Because the conversion is local, there are no upload bandwidth constraints. You can convert dozens of high-resolution images into a single PDF instantly, without the typical wait times associated with cloud-based services.
On-Device Engine
The entire conversion logic runs in your browser using WASM. Your photos never leave your device.
Privacy Guaranteed
Technically impossible for us to see your images. We don't have a storage layer for your content.
High Fidelity
Preserves original image resolution and color profiles. No aggressive compression unless you choose it.
Instant Export
Zero upload and download latency. Processing happens at the speed of your device's local memory.
Frequently Asked Questions
Everything you need to know about Image to PDF
Is it safe to convert photos of my ID or Passport?
How many images can I convert at once?
What image formats are supported?
Will the PDF be too large for email?
Knowledge Hub
Stop Uploading. Start Processing Locally.
Join thousands of professionals who trust DocuStitch for mission-critical PDF operations without the risk of cloud leaks.