After we finally convert a PDF document to JPG images, when we zoom in, the edges of the text are full of jagged edges, and the images and tables are so blurry that they are completely unrecognizable. The originally clear layout looks pixelated like a mosaic. Such blurry images are completely unusable for submission, printing, or sending to others for review. In fact, most of the time, PDF to image conversions become blurry not because the tools or editors are inadequate, but because the default resolution in the output settings is too low, like using a low-pixel camera to capture a high-definition scene — no matter how good the content is, it's useless. So, how can we batch convert multiple PDFs into high-definition JPG images that won't appear jagged or blurry when zoomed in?
Here is a method to teach everyone, by adjusting the PPI parameter, the converted JPG image retains all the details of the original document. Whether it is the font or the picture, they can be clearly displayed. No matter how much you zoom in, the content is exactly the same as the original PDF and remains clearly visible, solving the problem of blur and aliasing.
Why convert PDF to high-definition images that have no aliasing or blur when enlarged?
For high-definition display
Sometimes, when you need to place PDF content on posters, display boards, or large screens, zooming in often results in aliasing and blur, making it look unclear. Converting PDF to high-definition images ensures no aliasing when enlarged, keeping text and images sharp and crisp.
For easy sharing and dissemination
On social platforms or some websites, uploading images is more convenient than uploading PDFs. Some only support image formats. If converted using ordinary methods, the image is likely to be very blurry. However, high-definition images converted by adjusting PPI remain clear when viewed at larger sizes, without affecting the reading experience, and are more suitable for forwarding and browsing.
To meet printing needs
When doing printing or design layout, the clarity requirements for images are very high. If the image is blurry and has aliasing, the print will appear very rough. Converting PDF to high-definition, alias-free images ensures clear details and smoother colors and lines.
Preview of the effect of converting PDF to JPG images that are not blurry when enlarged
Before processing:
After processing:
Steps to batch convert PDF to high-definition JPG images by adjusting the PPI parameter
1. Open【 HeSoft Doc Batch Tool 】, select【PDF Tools】-【PDF to JPG Image】.
2. In【Add File】or【Import Files from Folder】, choose a method to add the PDF that needs to be converted to a high-definition image. You can also directly drag the PDF into the area below to add it, and then click Next.
3. Enter the processing settings interface. For processing range, select【All Pages】. Next, for image pixel density, manually enter the PPI. The higher the number, the clearer the image. After setting, click Next again. Then click Browse and choose the save location for the new file.
4. After the processing is complete, click the red path to open the folder and view the successfully converted high-definition JPG images.
