DPI Converter
Upload a JPG or PNG, read its stored DPI, choose a new value, and download the updated file. Pixel dimensions and compressed image data stay unchanged.
More image DPI tools
Check the file first, change any supported density, or use the focused 300 DPI workflow.
Change print metadata, not image detail
The pixels stay exactly where they are
This converter updates the physical-resolution field stored in a JPG or PNG. It does not decode, resample, or recompress the image, so the pixel dimensions and compressed image data remain unchanged.
DPI controls calculated print size
Print and layout software can use the stored density to calculate a physical size. The same 3000×2400 image calculates to 10×8 inches at 300 DPI or 20×16 inches at 150 DPI; the underlying pixels are identical.
Use the value your workflow requires
Common presets and custom DPI
Choose 72, 96, 150, 300, or 600 DPI, or enter a whole-number value from 36 to 2400. Follow the requirement from the printer, publisher, marketplace, or application receiving the file.
Private browser processing
The file is read and updated locally in your browser. JPG and PNG files up to 25 MB are supported, and the image is not sent to an Instasize server.
How do I change the DPI of an image?
- 1
Step 1: Upload a JPG or PNG
Choose one JPG or PNG up to 25 MB. The checker reads its pixel dimensions and any stored physical-resolution metadata.
- 2
Step 2: Choose the target DPI
Select a common preset or enter the exact whole-number value required by your print or publishing workflow.
- 3
Step 3: Update and download
Change the metadata, verify the resulting DPI, and download the JPG or PNG with its original pixels preserved.
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Does changing DPI improve image quality?
No. Changing DPI metadata does not create pixels or recover detail. Print quality depends on whether the image has enough pixel dimensions for the intended physical size.
What DPI should I use?
Use the exact requirement supplied by the printer or publisher. 300 DPI is a common starting point for close-viewed print, while lower densities may be acceptable for drafts or large prints viewed from farther away.
Does the converter resize or recompress my image?
No. It updates JPG JFIF/EXIF resolution metadata or the PNG pHYs chunk without decoding the pixels. The dimensions and compressed image payload remain unchanged.
Which image formats are supported?
The current tool supports one JPG or PNG up to 25 MB. Other formats store physical-resolution information differently and are not rewritten by this converter.
Is my image uploaded?
No. Inspection, metadata changes, and download preparation happen in your browser on your device.
Terms explained
Short definitions of the image terms behind this tool, with how to handle each one.
Instasize pricing: free editing and paid AI plans
Resize, crop, add text and work with layers for free. Paid plans include an AI usage allowance, background removal and access to image and video models. First-time subscribers can start with a free trial.
Free
Essential tools for casual creators.
Free forever
- Resize, crop, text and layers
- Batch resize & convert, 200 photos at a time
- HD export
- No AI features: AI edits are part of Pro
Pro
PopularEssential AI tools for creators
Billed monthly
Annual option: $299.99 billed yearly.
- More AI usage
- Batch background removal, 200 photos at a time
- 2 generations at a time
- AI Chat Editing
- All AI image models
- All AI video models
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Advanced features for professionals
Billed monthly
Annual option: $499 billed yearly.
- More AI usage
- Batch background removal, 200 photos at a time
- 4 generations at a time
- AI Chat Editing
- All AI image models
- All AI video models
Max
Maximum power and speed
Billed monthly
Annual option: $2199 billed yearly.
- More AI usage
- Batch background removal, 200 photos at a time
- 8 generations at a time
- AI Chat Editing
- All AI image models
- All AI video models
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