Check the DPI (Dots Per Inch) of images embedded in your PDF
Drop your PDF file below to analyze image DPI
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Only PDF files are accepted
Important note: PDFs themselves do not have a DPI - PDF files are typically a mix of raster and vector graphics. Text and vector graphics can scale to any size without their quality degrading, while raster images embedded in PDFs do have a DPI and can experience quality loss if they are scaled up.
| Quality Level | DPI Range | Description |
|---|---|---|
| Low Quality | Less than 150 DPI | Suitable for web use only. May appear pixelated in print. |
| Medium Quality | 150 - 299 DPI | Acceptable for most print applications. Good balance of quality and file size. |
| High Quality | 300+ DPI | Professional print quality. Ideal for high-quality publications and detailed images. |
DPI stands for 'Dots Per Inch'. It's a measurement of the resolution or detail in an image or printed output. Specifically, it's a measure of how many individual dots of color or ink fit into one inch of space. A higher DPI means more dots per inch, resulting in a sharper, more detailed image, while a lower DPI can make images appear blurry, pixelated, or low quality, especially when printed.
No, this is actually a common misconception. PDFs themselves do not have a DPI. They merely act as containers for the elements they contain.
However, raster images within PDFs do have a DPI. This is what our PDF DPI Checker tool does. It extracts all the images from your PDF and analyzes the DPI of each of them (in addition to providing some other information like image dimensions).
Yes. Higher DPI images will look sharper/more detailed in PDFs, while lower DPI images may look fuzzy. The trade-off is that higher DPI images typically have a larger file size, which increases the overall size of the PDF.
It's worth considering what context you're using the PDF in when deciding on whether a certain DPI is needed for images in the PDF. If you're printing the PDF, you will likely want to ensure that all the images have a relatively high DPI (we recommend 300+). However, if you're simply displaying the PDF in a web browser, lower DPI images may be acceptable.
While there's no 'right' answer to this, we do recommend a DPI of at least 300 for images in PDFs you plan on printing out.
Yes, it is free to use and you can check the DPI of images embedded in as many PDFs as you want.
Not directly. You'll need to remove the low DPI images from your original PDF and then re-add higher DPI versions of them.
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