JPG to PDF. Images into one document.

Why convert images to PDF?

PDF is the universal format for sharing documents that need to look the same on every device, every operating system, and every printer. When you send a JPG, the recipient's image viewer may display it at a different size, rotation, or quality depending on their software. A PDF wraps your images in a structured container with defined page dimensions, margins, and metadata — it opens consistently in every environment.

Converting images to PDF is especially useful when you need to combine multiple photographs into a single file for sharing, when you want to submit a photo-based document (such as a scanned form or ID) via a portal that only accepts PDFs, or when you want to preserve the layout of an image-based report or presentation in a printable format.

What image formats are supported?

Hoja supports JPG, PNG, WebP, GIF, and HEIC files. Each image becomes one page in the output PDF. You can add multiple images and reorder them by dragging before converting. The order of images in the tool matches the order of pages in the output.

PNG images are embedded directly into the PDF to preserve transparency. JPEGs are embedded as-is. WebP, GIF, HEIC, and any other image type are decoded through your browser's native image engine and re-encoded as JPEG before embedding — this ensures compatibility with all PDF readers. HEIC files (the default format from iPhone cameras since iOS 11) are supported in Safari and in Chrome on macOS. If you're on Windows with Chrome or Firefox, HEIC support depends on whether you have the HEVC codec installed on your system.

Page size options explained

Three page size presets are available. A4 (210 × 297 mm) is the international standard, used for most documents in Europe, Asia, and beyond. US Letter (8.5 × 11 inches) is the standard in North America and is the default page size in most American office software. "Fit to image" creates a page exactly the size of each image — useful when you want zero margins and the page dimensions to match the photograph rather than a standard paper size.

When you choose A4 or Letter, images are scaled to fill the page while preserving their aspect ratio. No cropping occurs — if the image's aspect ratio doesn't match the page, it is centered with white margins on the narrower sides.

Privacy

Image processing and PDF generation happen entirely in your browser using pdf-lib and the native Canvas API. Your images are never uploaded to a server. The output PDF is generated in memory and offered as a download via a local object URL. Nothing leaves your device except the downloaded file, which goes directly to your disk.