Change Image DPI Online
Set the DPI metadata of a JPG or PNG image in your browser. Choose a value such as 150 or 300 DPI, then download your updated file.
This tool changes the resolution metadata, not the number of pixels in your image. It does not add detail or improve image quality.
How to Change Image DPI
- Choose a JPG or PNG image from your device.
- Select a DPI value, such as 300.
- Click Change DPI and wait for processing to finish.
- Download the updated image and check it in your preferred image or print software.
What Does DPI Mean?
DPI stands for dots per inch and is commonly used when discussing printing. Digital images are made of pixels, while DPI or PPI settings help software interpret how those pixels relate to a physical print size.
For example, a 3000-pixel-wide image set to 300 pixels per inch corresponds to a print width of 10 inches, if the software uses that resolution setting. Changing the metadata does not create extra pixels.
Related Free Image Tools
- Image Resizer — change image dimensions.
- Image Compressor — reduce image file size.
- Image Cropper — crop an image online.
- Image to Grayscale Converter — create a grayscale image.
Frequently Asked Questions
Can I change an image to 300 DPI online?
Yes. Upload a supported JPG or PNG, choose 300 DPI, and download the updated file. Some applications may interpret resolution metadata differently.
Does changing DPI improve image quality?
No. Changing DPI metadata alone does not add pixels, recover details, or sharpen a photo. You need enough image pixels for your intended print size.
Is 300 DPI good for printing?
300 DPI is a common target for high-quality prints, but the right setting depends on the printer, print size, viewing distance, and print provider.
Will this tool resize my image?
No. This tool changes the resolution metadata in supported files. Use the Image Resizer if you need to change pixel width or height.
Which image formats are supported?
This version supports JPG, JPEG, and PNG files. Other formats, including WebP, are not supported by this tool.
Are my images uploaded to a server?
The tool processes the selected file in your browser and does not intentionally upload it to a processing server. Other website services, extensions, or security software may operate separately.