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Image DPI Converter

Change the DPI metadata of multiple JPG and PNG images without changing their pixel dimensions.

Related Resize Tools

Explore more ways to resize files for screens, print, and exact physical dimensions.

Bulk ResizerResize multiple files together.Resize for PrintingPrepare exact dimensions for print.Resize in PixelsSet exact pixel dimensions.Resize in CentimetersResize using centimeters.Resize in MillimetersResize using millimeters.Resize in InchesResize using inches.Resize with Aspect RatioUse a standard or custom ratio.Resize by PercentageScale files by a percentage.

How to change image DPI

Update print-resolution metadata without changing the pixel dimensions.

  1. 1

    Add a JPG or PNG

    Choose the image whose stored DPI value needs to change.

  2. 2

    Set the target DPI

    Choose a preset or enter a custom value from 72 to 1200 DPI.

  3. 3

    Update and download

    Write the new metadata and save the image with its original pixels.

Set the required DPI metadata

Change how physical size is interpreted without resampling the image.

01

Change metadata, not pixels

Write a new DPI value into supported JPG or PNG files while preserving their existing width and height in pixels.

  • Choose 72 to 1200 DPI
  • Keep pixel dimensions unchanged
  • Review the current stored value
Change metadata, not pixels
1Choose 72 to 1200 DPI
2Keep pixel dimensions unchanged
3Review the current stored value
02

Meet print submission rules

Set the metadata requested by a printer, publisher, or upload portal after confirming the image has enough pixels.

  • Match a stated DPI requirement
  • Preserve the source pixel count
  • Check physical size separately
Meet print submission rules
Match a stated DPI requirement
Preserve the source pixel count
Check physical size separately
03

Label prepared photographs

Update resolution metadata on finished photo files for handoff to designers, labs, or publishing workflows.

  • Use familiar photo DPI presets
  • Avoid unnecessary resampling
  • Keep image detail unchanged
Label prepared photographs
Use familiar photo DPI presets
Avoid unnecessary resampling
Keep image detail unchanged
04

Standardize document graphics

Give scans, diagrams, and report images consistent DPI metadata before assembling or delivering a document set.

  • Align metadata across assets
  • Retain exact source dimensions
  • Prepare predictable handoff files
Standardize document graphics
Align metadata across assets
Retain exact source dimensions
Prepare predictable handoff files

DPI conversion FAQ

Understand metadata, pixels, print size, and what a DPI change can really do.

What changes when I change image DPI?
The tool updates resolution metadata stored in a supported JPG or PNG. It does not change the image's pixel width or height, redraw details, or automatically alter the pixel data used on screens and websites.
Does increasing DPI improve image quality?
No. A higher metadata value cannot create new pixels or restore missing detail. It changes how software may calculate physical print size from the existing pixels, so actual sharpness still depends on source resolution.
Will changing DPI resize the image?
No. Pixel dimensions remain unchanged. Some layout or print applications may display a different physical size because they divide the same pixels by the new DPI value, but the underlying raster canvas stays identical.
Which DPI should I choose for printing?
Use the value requested by the printer, publisher, or submission portal. A common number alone does not guarantee quality; confirm that pixel dimensions divided by the chosen DPI still produce the required physical size.
What if my image has no DPI metadata?
You can assign a supported target value, but doing so only adds the missing resolution label. It does not reveal an original setting or improve the image, so evaluate its pixels against the intended print dimensions.
Why does physical print size change?
Print size is often calculated as pixel dimensions divided by DPI. Raising DPI makes the interpreted physical size smaller, while lowering it makes the size larger, even though the file contains the same number of pixels.
Can I set different horizontal and vertical DPI?
This workflow uses one target value for both axes, which matches most common print requirements. If a specialized system requires unequal horizontal and vertical resolution metadata, use a dedicated metadata editor.
Which image formats can be updated?
The converter supports JPG and PNG files whose metadata can be read and rewritten by this workflow. Other formats use different metadata structures, so convert or edit them with a tool that explicitly supports that format.

Set your image DPI

Update JPG or PNG resolution metadata while keeping every source pixel.