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📄 About PDF (Portable Document Format)

PDF (Portable Document Format) is an electronic file format developed by Adobe for presenting documents in a manner independent of application software, hardware, and operating systems. Each PDF file encapsulates a complete description of a fixed-layout flat document, including the text, fonts, vector graphics, raster images, and other information needed to display it.

 

PDF is widely used for document exchange, including e-books, manuals, forms, scanned documents, and more, due to its ability to maintain the consistency of the original format and layout.

 

🖼️ Supported Image Types

This tool supports converting PDF pages into the following common image formats:

 

PNG (Portable Network Graphics): A lossless compression bitmap graphic format that supports transparency. Ideal for images containing text, line art, or those requiring crisp details.

JPEG (Joint Photographic Experts Group): A lossy compression format widely used for photographs and images with complex color variations. You can adjust its compression quality during conversion.

WebP: A modern image format developed by Google that provides superior lossless and lossy compression for images on the web. WebP lossless images are 26% smaller in size compared to PNGs, and WebP lossy images are 25-34% smaller than JPEGs at equivalent SSIM quality. It also supports transparency.

⚙️ How It Works

This PDF to Image Converter tool runs entirely in your browser, leveraging powerful open-source libraries:

 

PDF Parsing (using PDF.js): When you upload a PDF file, the PDF.js library in your browser loads and parses the file. It reads the PDF's internal structure, including text, images, and layout information.

Page Rendering: PDF.js renders the PDF content page by page onto an HTML element. Canvas is an HTML5 element that allows for dynamic, scriptable rendering of 2D shapes and bitmap images.

Image Generation: Once a PDF page is successfully rendered on the canvas, the browser can export the canvas content as an image. By calling the canvas's `toDataURL()` method (specifying the desired image format like `image/png` or `image/jpeg` and quality parameters), a Base64 encoded image data string is obtained.

Image Download: The generated image data can be used for previewing on the page and for creating a download link, allowing users to save the image to their local device. For multi-page PDFs, all converted images can be bundled into a ZIP file using the JSZip library for a single download.

🔒 Data Security & Privacy

We highly value your data privacy and security. All conversion operations for this PDF to Image tool are performed locally in your browser:

 

Your uploaded PDF files are not sent to any external servers.

File processing and image conversion happen entirely on your computer.

The converted images also do not leave your device unless you actively download them.

This means your file content and conversion results remain private and under your complete control. You can use this tool with peace of mind, without worrying about data leakage risks.