How It Works: 100% Local Browser Processing
All image and PDF conversions happen entirely in your browser. Your files never leave your device, ensuring complete privacy and security.
Client-Side Processing Explained
Unlike traditional online converters that upload your files to remote servers, img2img uses advanced web technologies to process everything locally on your computer. This means:
Complete Privacy
Your files are never uploaded to any server. All processing happens in your browser's memory, and files are deleted immediately after conversion.
Lightning Fast
No network latency means conversions happen instantly. Your internet speed doesn't affect processing time.
No Limits
Process files of any size without worrying about upload limits or server restrictions.
Technical Implementation
img2img leverages modern web APIs and JavaScript libraries to perform conversions:
- File API: Reads files directly from your device
- Canvas API: Renders and processes images
- PDF.js: Handles PDF rendering and conversion
- Mammoth + html2canvas: Extracts Word (.docx) text/images and rasterizes pages for PDF/image output
- Web Workers: Processes large files without blocking the UI
- Blob API: Creates downloadable files without server interaction
Why Local Processing Matters
When you convert files using img2img, you can be confident that:
- ✓Your sensitive documents never leave your device
- ✓No data is stored, logged, or analyzed
- ✓Works completely offline after initial page load
- ✓No account creation or login required
- ✓Complies with GDPR and privacy regulations
Supported Operations
All of these operations run entirely in your browser:
Image to PDF
Convert PNG, JPEG, WebP, and other formats to PDF
PDF to Image
Extract pages from PDFs as PNG, JPEG, or WebP
Format Conversion
Convert between various image formats
Icon Generation
Generate multiple icon sizes from a single image
PDF to Markdown
Extract PDF text and images as Markdown
PDF to EPUB
Turn PDFs into reflowable EPUB ebooks
Word to PDF
Convert .docx files to PDF (layout approximation)
Word to Markdown
Extract .docx text and images as Markdown
Compress EPUB
Recompress ebook images for Amazon Kindle and other readers
Compress Images
Shrink images and PDFs with a live size estimate
Combine Mixed Files
Merge or stitch different formats into one output