Exact Size ToolsCompress an image
Menu

Image Tools

Change Image DPI or PPI

Change density metadata, resample for a physical size, or upscale pixels with the differences clearly explained.

Use the tool

Prepare your file

JPG, PNG, WebP · up to 25 MB · 40 megapixels

Drop an image here

JPG, PNG, or WebP · up to 25 MB

Processed in this browser tab. No file upload is used.
Choose an image to start.

How it works

Three clear steps

  1. 01

    Choose an image.

  2. 02

    Select metadata-only, preserve physical size, or upscale mode.

  3. 03

    Set the PPI and process the file; review whether pixel dimensions changed.

What this tool does

Choose deliberately between metadata-only density and real pixel resampling.

Accepted inputJPG, PNG, WebP · up to 25 MB · 40 megapixels
Processing locationThis browser tab
Account requiredNo
Output validationSignature, byte count, and tool constraints

How this result is produced

Metadata-only mode changes density information where the output format supports it. Resample and upscale modes instead change pixel dimensions to preserve a chosen physical size or create a larger image grid.

Practical example

Changing 72 PPI to 300 PPI in metadata-only mode does not add detail. Use resample only when a physical print size and output pixels are required.

Read the guide to pixels, PPI, format, and file-size terms

Limits and troubleshooting

  • Metadata-only changes do not create detail.
  • WebP density metadata is not standardized in this workflow, so WebP uses resampling modes only.

If another program still reports the old density, it may be ignoring the new metadata. Use a resampling mode when the receiving workflow needs a specific pixel count, and lower the requested dimensions if the browser runs short of memory.

Questions people ask

Will setting 300 DPI improve a blurry image?

No. A metadata-only change affects how physical size may be interpreted. Upscaling adds pixels but cannot reconstruct detail that was not captured.