Image DPI Checker

Drop in an image to see the DPI stored inside it, where that number comes from, the pixel size, and how large it will print — at its own DPI and at 300 DPI. Your file is only read, never changed or uploaded. Need a different DPI? Change it here.

or drop images here — or press Ctrl + V to paste

JPG · PNG · TIFF · BMP · WebP · GIF — read in your browser, never uploaded

How to check the DPI of an image

DPI (dots per inch) is a number saved inside the image file that tells printers how big to print it. It is not visible in the picture itself, so you need a tool that reads the file’s header.

Choose or drop one or more images.
Read the DPI, where it was found, and the pixel size for each file.
Check the print sizes — then use the Change DPI button if you need a different value.

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Reads every header

JFIF and EXIF in JPGs, the pHYs block in PNGs, and the TIFF and BMP headers — and shows which one the number came from.

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Shows the print size

See how large the image prints at its own DPI and at 300 DPI, in inches and centimetres.

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Read-only and private

The file is read by your own browser. Nothing is changed, saved or sent to a server.

Square sizes

Same width and height — profile photos, icons, product shots:

8 × 8 10 × 10 16 × 16 28 × 28 32 × 32 40 × 40 50 × 50 64 × 64 96 × 96 98 × 98 100 × 100 112 × 112 120 × 120 128 × 128 144 × 144 150 × 150 180 × 180 184 × 184 192 × 192 200 × 200 240 × 240 250 × 250 256 × 256 300 × 300 320 × 320 350 × 350 360 × 360 400 × 400 450 × 450 480 × 480 500 × 500 512 × 512 600 × 600 640 × 640 700 × 700 800 × 800 840 × 840 900 × 900 1000 × 1000 1024 × 1024 1080 × 1080 1100 × 1100 1200 × 1200 1300 × 1300 1400 × 1400 1500 × 1500 1600 × 1600 1920 × 1920 2000 × 2000 2048 × 2048 2400 × 2400 2500 × 2500 3000 × 3000 4000 × 4000 5000 × 5000 6000 × 6000

Landscape sizes

Wider than tall — screens, banners, covers and thumbnails:

64 × 32 140 × 110 150 × 100 200 × 150 300 × 80 300 × 250 320 × 240 400 × 150 480 × 360 512 × 128 512 × 256 555 × 425 600 × 240 600 × 400 (3:2) 640 × 360 640 × 480 (4:3) 680 × 240 800 × 600 (4:3) 851 × 315 900 × 600 1000 × 500 1024 × 576 (16:9) 1080 × 566 1128 × 191 1200 × 628 1200 × 630 1200 × 675 (16:9) 1200 × 800 1200 × 900 1280 × 700 1280 × 720 (HD) 1366 × 768 1500 × 500 1500 × 1000 (3:2) 1600 × 900 1920 × 1080 (Full HD) 1920 × 1200 (16:10) 2048 × 1152 (2K) 2560 × 1440 (1440p) 2660 × 1140 (banner) 3000 × 1500 3440 × 1440 3840 × 2160 4080 × 3060

Portrait sizes

Taller than wide — passport photos, forms and phone screens:

Change the aspect ratio

Fit an image to a ratio without choosing pixels:

Any aspect ratio 16:9 4:3 3:2 1:1 4:5 5:4 3:4 2:3 9:16 21:9 5:2

Paper, print & photo sizes

Paper and photo sizes in mm, cm and inches, plus DPI tools:

A5 A4 A3 Letter Legal 4R (4 × 6 in) Postcard Stamp size Signature 2.5 × 2.5 cm 3 × 4 cm 3.3 × 4.8 cm 3.5 × 2.5 cm 3.5 × 3.5 cm 3.5 × 4.5 cm 3.5 × 5 cm 3.81 × 3.81 cm 4 × 3 cm 4 × 4 cm 4 × 5 cm 4 × 6 cm 4.5 × 3.5 cm 5 × 5 cm 5 × 7 cm 5.08 × 5.08 cm 25 × 25 mm 30 × 40 mm 32 × 26 mm 33 × 48 mm 35 × 35 mm 35 × 45 mm 35 × 50 mm 35 × 54 mm 36 × 36 mm 38.1 × 38.1 mm 40 × 50 mm 45 × 35 mm 45 × 38 mm 47 × 36 mm 50 × 50 mm 50 × 70 mm 50.8 × 50.8 mm 51 × 51 mm 52 × 40 mm 1.18 × 1.57 in 1.30 × 1.89 in 1.38 × 1.38 in 1.38 × 1.77 in 1.5 × 1.5 in 1.97 × 2.76 in 2 × 2 in 3 × 3 in 4 × 6 in 5 × 7 in 6 × 4 in 8 × 10 in 8.5 × 11 in Resize in pixels Resize in cm Resize in mm Resize in inches Resize by percentage 72 DPI converter 100 DPI converter 150 DPI converter 200 DPI converter 300 DPI converter 600 DPI converter Image DPI converter Image DPI checker

Resize for a platform

Ready-made sizes for social profiles and posts:

Instagram feed & story Instagram profile photo YouTube thumbnail Twitter banner 1 × 1 inch (300 DPI) 24 × 36 poster

Reading the result

Where DPI is stored. JPGs can carry it in two places — the JFIF header and the EXIF data written by cameras and editors. PNGs keep it in a pHYs block, TIFF and BMP in their own headers. The checker reads all of them and tells you which one it found.

"No DPI stored" is common. Screenshots, web downloads and many app exports simply leave it out. Programs then assume a default — usually 72 on Mac and the web, 96 on Windows. The image is not broken; it just has no print size yet.

Two different values? Some JPGs say 72 in JFIF and 300 in EXIF. Photoshop and most print software read EXIF first. To make them agree, run the file through the DPI converter, which writes one value.

The number that matters for print is the last line: how wide the image prints at 300 DPI. If that's smaller than your print, you need a larger original — changing the DPI label won't add detail.

Fix or use the DPI

Once you know the DPI, change it or size the image for print:

Image DPI converter Set 300 DPI Set 72 DPI Set 600 DPI Resize in inches Resize in cm Fit to A4 4 × 6 inch print

Frequently asked questions

Why does my photo say 72 DPI?

Many cameras and phones write 72 as a default label. It says nothing about quality — a 4000-pixel-wide photo at 72 DPI still prints sharply at about 13 inches when set to 300 DPI.

Does the checker change my file?

No. It only reads the file's header in your browser. Nothing is edited, saved or uploaded.

Which formats can it read?

JPG, PNG, TIFF, BMP, WebP and GIF. GIF has no DPI field, and HEIC or RAW camera files are not supported — convert HEIC to JPG first.

Is horizontal and vertical DPI always the same?

Almost always. When they differ, the checker shows both, as X × Y DPI.