Image to PDF

The Image to PDF tool combines one or multiple images into a single PDF document. Useful for creating portfolios from photos, compiling scanned pages into a document, building photo albums for sharing, creating photography collections, or any workflow that needs PDF output from image sources. Upload multiple images, reorder as needed, choose page size and orientation, and download the combined PDF.

Supports JPG, PNG, WebP, GIF, and BMP input. Images become one per page by default, though you can fit multiple per page if preferred. Page sizes include A4, A3, Letter, Legal, and custom dimensions. Orientation can be auto (matches image aspect ratio), portrait, or landscape. Image placement options: fit (scale to page with margins), fill (cover the whole page, may crop), actual size (no scaling). All processing runs in your browser using PDF generation libraries — images and generated PDFs stay local.

PDF generation happens client-side using PDF libraries like jsPDF or pdf-lib. These libraries create PDF files from images and text directly in JavaScript without needing a server.

PDF structure for image-to-PDF:
1. Create a PDF document with chosen page size
2. For each image, add a new page
3. Embed the image as a raster object on the page
4. Size and position the image according to layout settings
5. Output the PDF as bytes, offer as download

Page sizes in points (1 point = 1/72 inch):
- A4: 595 × 842 (portrait), 842 × 595 (landscape)
- Letter (US): 612 × 792 (portrait)
- Legal (US): 612 × 1008
- A3: 842 × 1191
- A5: 420 × 595

Image embedding modes:
- Fit: image scaled to fit within page margins, preserving aspect ratio
- Fill: image scaled to cover entire page, cropping overflow
- Actual size: image at native size (may exceed page or be tiny)
- Stretch: image stretched to fill page exactly, ignoring aspect ratio (not recommended)

Margins: default 10mm all sides. Configurable. Images respect margins in fit mode; fill mode ignores margins.

Image format in PDF:
- JPEG images are embedded as-is (efficient — PDF natively stores JPEG)
- PNG images are embedded with lossless compression
- WebP, GIF, BMP are converted to JPEG or PNG for PDF embedding

File size: resulting PDF is typically the sum of input image sizes plus small PDF overhead. Very high-res images make large PDFs. For smaller PDFs, resize or compress images first.

Color space: PDF supports RGB, CMYK, and grayscale. Web-generated PDFs use RGB (same as images). For print workflows that need CMYK, use dedicated tools.

Compression: PDF can compress images (lossy for photos, lossless for line art). Some libraries offer compression settings; default is typically lossless for PNG, native JPEG quality for JPEG.

Multiple images per page: less common but supported by some tools (grid layout, 2-up, 4-up). Most image-to-PDF tools default to one image per page.

Performance: generating PDF with 10-50 images takes seconds; 100+ images may take longer. Memory usage scales with total image data.

Compared to desktop PDF tools (Adobe Acrobat, Preview on macOS), this tool is free and browser-based. Adobe Acrobat has more features; this tool handles the image-to-PDF case simply.

Compared to print-to-PDF from image viewers, this tool offers more control over page layout and margins. Print-to-PDF works but is less consistent across images.

Compared to online PDF conversion services, this tool doesn\u2019t upload images. Many online converters upload to their servers; this tool runs entirely in your browser.