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DPI Converter

Change the DPI (dots per inch) metadata of any image for printing. Set DPI to 72 for screens, 150 for standard prints, 300 for professional printing, or 600 for high-resolution art and photo books. The tool also calculates the exact print size your image will produce at any DPI, helping you understand whether you have enough pixels for the print size you need.

🔒 100% private — never uploaded⚡ Instant results🆓 Always free🚫 No signup required🖥️ Runs in your browser

How to Use DPI Converter

1
Upload your image
Click the upload area or drag and drop a JPG or PNG image. The current DPI metadata and calculated print size are displayed immediately.
2
Check current print size
The tool shows how large your image will print at the current DPI. A 3000×2000 pixel image at 300 DPI prints at 10×6.67 inches — check this before proceeding.
3
Enter the target DPI
Type your desired DPI or choose a preset: 72 DPI (screen), 150 DPI (standard print), 300 DPI (professional print), 600 DPI (fine art/photo book).
4
Choose whether to resample
Setting DPI without resampling only changes the metadata — the pixel count stays the same. Resampling changes the actual pixel dimensions to produce the new DPI at the same physical size.
5
Download
Download the image with the updated DPI setting embedded. For JPG, the DPI is stored in the EXIF data. For PNG, it is stored in the pHYs chunk.

When to Use This Tool

Professional printing and press

Commercial printers, photo labs, and print-on-demand services typically require 300 DPI images. Verify your image meets this requirement and convert if needed before submitting.

Fine art prints and photo books

High-quality art prints and premium photo books often require 600 DPI for maximum sharpness at close viewing distances. Convert and verify pixel count is sufficient for the required print size.

Web and screen graphics

Screen images are displayed at 72 or 96 DPI. Converting print images to 72 DPI before uploading to the web reduces unnecessary metadata and standardises the image for screen display.

Checking if an image is high enough resolution

Before ordering a large print, check whether your image has enough pixels. The DPI calculator shows the maximum print size at 300 DPI — if your image is too small, you will see pixelation at the desired print size.

Magazine and newspaper submission

Editorial publications have specific DPI requirements for submitted photography — typically 300 DPI at the final print size. Use this tool to verify compliance before submitting images to editors.

Quick Reference

Feature	Detail
Supported formats	JPG, PNG, TIFF
DPI presets	72, 96, 150, 200, 300, 600 DPI
Custom DPI	Yes — enter any value
Resampling option	Yes — metadata only, or with pixel resize
Print size calculator	Yes — shows print dimensions at any DPI
Server upload	Never — 100% browser-based
Watermark	None
Cost	Free, no account needed

About DPI Converter

The DPI Converter changes the dots-per-inch (DPI) metadata embedded in an image file without altering the actual pixel data. This is critical for print workflows, where programs like Adobe InDesign, Microsoft Word, and professional print services use the DPI value to determine the physical print size of an image. Changing DPI does not resize the image — it only tells print software how large each pixel should be when printed on paper.

DPI conversion is needed when:

A printer rejects your image because it reports "72 DPI" even though the pixel count is high enough for quality printing
Preparing images for professional offset printing which requires exactly 300 DPI
Correcting metadata on images exported from web applications which default to 96 DPI
Setting images to 72 DPI for pure web use to match standard screen resolution specifications
Fixing DPI mismatches that cause layout software to place images at incorrect sizes

DPI (or PPI — pixels per inch) is stored as metadata in the image file header, not as part of the pixel data. For JPEG files, this is in the JFIF or Exif segment. For PNG files, it is in the pHYs chunk. The tool reads the existing header, modifies the resolution value to your specified DPI, and rewrites the header. The pixel grid itself — every single pixel — remains completely unchanged. This operation is lossless: no pixel is created, removed, or altered.

Input formats: JPG, PNG, TIFF. DPI presets: 72 (web/screen), 96 (Windows screen), 150 (low-quality print), 300 (standard print), 600 (high-quality print). Custom DPI: enter any value from 1 to 1200. Output: same format as input with updated DPI metadata.

DPI conversion runs entirely in your browser by manipulating the binary file headers using JavaScript. No file data is transmitted over the network. Your images remain private and the operation completes in under a second for most files. After converting DPI, you may also want to use the Image Resizer if the actual pixel dimensions need adjustment.

Pro Tips for DPI Converter

To check if an image has enough pixels for a print at 300 DPI, divide the pixel dimensions by 300 — a 3000×2000px image prints at 10×6.67 inches at 300 DPI.

If a design program places your image at an unexpected size, it's using the embedded DPI to calculate the default size — change the DPI to 300 so the program places it at the correct print dimensions.

TIFF files support multiple DPI values per file — if your TIFF looks correct in preview but prints wrong, convert DPI and save as a fresh TIFF.

Web images exported from professional tools often have 72 DPI baked in — use this converter to set them to 96 DPI for correct display in Windows environments.

Frequently Asked Questions

What is DPI and why does it matter for printing?+

DPI (dots per inch) describes how many ink dots a printer places per inch of paper. For digital images, it indicates how many pixels are mapped to each inch when printed. A higher DPI means more pixels per inch — resulting in a sharper, more detailed print. Standard professional printing uses 300 DPI; images printed below 150 DPI typically look pixelated or blurry.

Does changing DPI change the image quality?+

Changing DPI metadata alone (without resampling) does not change the image quality or pixel count — it only changes a number stored in the file header that tells printers how to scale the image. To physically change the number of pixels, enable resampling, which will resize the image to maintain the same physical dimensions at the new DPI.

What DPI do I need for professional printing?+

300 DPI is the industry standard for professional photo printing, magazines, brochures, and most commercial print applications. Some high-end applications like fine art giclée printing or premium photo books use 600 DPI. Standard home printing at 150 DPI is acceptable for general documents. Screen display does not use DPI in the traditional sense.

My image is only 72 DPI — can I just change it to 300 DPI?+

Changing the DPI metadata alone makes the file say 300 DPI, but the actual number of pixels has not changed — the print will just be smaller. To truly have a 300 DPI image at a given print size, you need enough pixels. For example, a 4×6 inch print at 300 DPI requires 1200×1800 pixels minimum. If your image does not have enough pixels, use the Image Upscaler to increase the pixel count, then set DPI to 300.

What is the difference between DPI and PPI?+

DPI (dots per inch) technically refers to the number of ink dots a printer produces per inch. PPI (pixels per inch) refers to the number of pixels in a digital image per inch. In everyday use, the terms are used interchangeably for digital images, and most imaging software including this tool treats them as equivalent.

How do I know if my image is high enough resolution for my print size?+

Divide the pixel dimensions by 300 to get the maximum print size in inches at professional quality. For example: 3000 pixels wide ÷ 300 DPI = 10 inches wide maximum. The tool's print size calculator does this automatically — it shows the maximum print dimensions at any DPI you enter.

Related Image Tools

Image Resizer

Resize to exact pixel dimensions

Image Upscaler

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Pixel Density Calculator

Calculate PPI for your screen

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Bulk Image Resizer

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