Free Image to PDF Converter

Whether you need to compile photos of homework assignments, digital receipts for tax purposes, or scanned identification documents, combining multiple images into a single PDF file is a daily necessity. Our fully secure Image to PDF Converter operates entirely within your browser. Your images are never uploaded to our servers, ensuring your sensitive documents remain strictly confidential.

How to Use the Converter

1. Upload Your Images: Click the designated upload zone to select multiple JPG, PNG, or WebP files from your computer or smartphone. They will instantly appear in the thumbnail grid.
2. Organize the Grid: If you accidentally uploaded the wrong image, simply click the red "X" icon on the thumbnail to remove it before processing.
3. Select Page Settings:
   • Standard A4: Places your images perfectly into standard printing dimensions (210 x 297 mm).
   • US Letter: Fits your images into standard North American paper dimensions (8.5 x 11 inches).
   • Auto (Match Exact Size): This mode forces the PDF pages to warp to the exact pixel width and height of your original photos—perfect for high-resolution graphics!
4. Set Margins: If you plan to physically print this PDF, adding a 10mm or 20mm margin ensures your printer does not cut off the edges of your images.
5. Generate and Download: Click "Generate PDF". The tool will calculate the exact dimensions and compile the document instantly. Once completed, click the green "Download" button to save your file.

The Mathematics of Image Scaling

To ensure your images do not stretch or distort when placed onto a standard A4 PDF page, our tool relies on aspect ratio calculations. Scaling an image proportionally involves calculating a ratio for both width and height, then automatically applying the smaller mathematical value to the final render. Furthermore, our core PDF engine applies intelligent 'FAST' compression algorithms to drastically reduce the output file size without sacrificing noticeable visual quality.