Check Image DPI Online
Drop in a JPG or PNG to read its stored DPI source, exact pixel dimensions, megapixels, and calculated physical print size without uploading the file.
More image DPI tools
Check the file first, change any supported density, or use the focused 300 DPI workflow.
Read the metadata that is actually present
JPG JFIF and EXIF resolution
JPG files can store image density in JFIF or EXIF metadata. The checker reads both and identifies which source supplied the displayed value.
PNG physical-pixel density
PNG files use a pHYs chunk to store pixels per physical unit. The checker converts a meter-based value to pixels per inch and reports when that chunk is absent.
Separate pixels from print instructions
Missing DPI is normal on the web
Screenshots, social downloads, and web exports often omit physical-resolution metadata. That does not mean the image has no resolution; its exact width and height in pixels still determine screen detail and possible print size.
Calculate print size honestly
When stored DPI exists, the checker divides pixel dimensions by that value to show the calculated print size in inches and centimeters. Printer scaling and application settings can still override the tag.
How do I check the DPI of an image?
- 1
Step 1: Choose a JPG or PNG
Select one image up to 25 MB. The browser reads the file directly on your device.
- 2
Step 2: Read the DPI and source
See the horizontal and vertical density plus the JFIF, EXIF, or PNG metadata source. Files without a physical-resolution tag are clearly marked.
- 3
Step 3: Review pixels and print size
Use the exact dimensions and calculated physical size to decide whether the image meets the destination requirement.
One of my go-to apps
Great app for filtering photos and even greater app for sizing pictures for not only posts but story photos as well... love this app I mainly use insta size for all my posts now ;)
Fast and Straightforward
Resizing photos for social media should be a cinch, but most editing programs are a pain to use. Of the dozen I’ve used, Instasize is the fastest, easiest and most consistent...
Great Sizes
Perfect app for the exact social media picture sizes. Love it. I use it daily. & I like the premade options they give you for different social medias!
I love instasize
Its the best app. for sizing photos to fit for Instagram or other forms of social media. You can also edit photos and create collages with multiple photos. It’s had been my friend for several years!
Always helpful
Always helpful when needing to resize photos
Huge fan
I love this app. Makes posting all types of photos. Love how it makes them fit on different formats
I’ve been using for years. Can’t work without it.
I use this app everyday to perfectly resize images for all of my social media platforms
LOVE
This app saved the day for me! I’m finally able to resize my photos for IG....effortlessly
Great App
We use this App weekly to resize pics for social media posts. Very user friendly, easy to use program when you want to get in and out quickly...
How can I tell if an image is 300 DPI?
Upload the JPG or PNG and read the stored DPI result. Also check the pixel dimensions against the intended physical print size because a 300 DPI tag alone does not guarantee enough detail.
Why does my image say DPI is not set?
Many web and screenshot files omit physical-resolution metadata. The image still has exact pixel dimensions; it simply does not carry a preferred print density.
Is DPI the same as pixel dimensions?
No. Pixel dimensions describe how many pixels the image contains. The stored DPI or PPI value tells print software how densely to place those pixels when calculating physical size.
Does checking DPI upload my image?
No. The JPG or PNG header is parsed locally in your browser and the file is not sent to a server.
Can I change the DPI after checking it?
Yes. Open the DPI Converter to set a common or custom value while preserving the same pixel dimensions and compressed image data.
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
Ultimate
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
AI Image Generator for Every Creative Need
Generate from text, expand photos, remove backgrounds, and upscale to 4K
