The fastest way to check an image's DPI is to open it in a tool that reads its embedded metadata directly. Drop your JPG, PNG, or WebP file into the DPI Checker, and you'll see its current DPI, pixel dimensions, and resulting print size immediately — nothing is installed, and the file never leaves your device.
Check any image's DPI in your browser — no upload, no signup.
Open DPI CheckerImage files can store a resolution value in their metadata — a JFIF or EXIF field in JPEGs, or a pHYschunk in PNGs — that software commonly labels "DPI." This value doesn't change what the image looks like on screen; it's an instruction that print software uses to decide how large the image should print. Checking it tells you what a print shop or design program will assume unless you override it.
Desktop editors expose the same information: in Photoshop, it's under Image → Image Size; on a Mac, selecting a file and pressing Cmd+I shows a "More Info" resolution field in Preview; on Windows, right-click → Properties → Details lists horizontal/vertical resolution for some file types. These all read the same underlying metadata a browser-based checker does — the difference is just convenience, since a web tool needs no software installed and works from any device.
Many images — screenshots, graphics exported from web design tools, camera-phone photos in some formats — are saved with no density metadata at all. That's not an error; it just means no value was ever written. If you need one for a print submission, set it with the DPI Converter or jump straight to 300 DPI, the most commonly requested value.
Checking DPI tells you the current metadata value. It doesn't tell you whether the image has enough pixels to print well.A file can show "300 DPI" and still print soft if its pixel dimensions are too small for the size you need. Once you've checked the DPI, it's worth also confirming the print size those pixels actually support — the DPI Checker shows this automatically, or you can work it out directly with the Print Size Calculator.
300 DPI is the standard target for photo and document prints viewed up close. Large posters and banners viewed from a distance can often use 150 DPI or less. See Best DPI for Common Print Formats for a full breakdown by use case.
Yes. The DPI Checker reads a file's JFIF, EXIF, or PNG density metadata directly in your browser using JavaScript's File and Canvas APIs — there's nothing to install and no upload involved.
Some editors and viewers ignore an image's actual metadata and simply assume 72 or 96 DPI for anything without a value set, or they round differently. A tool that reads the file's own JFIF/EXIF/pHYs fields directly — rather than assuming a default — will report what's actually stored.
No. The DPI Checker only reads the file locally in your browser to display its metadata. It doesn't upload the file anywhere, and it doesn't write anything back to it.
Not necessarily. Many images, especially screenshots and web graphics, are saved without any DPI metadata at all. That only becomes relevant if you're about to print the file and a print shop or platform asks for a specific value.
