Image info tools

Find out what's inside an image: its metadata, size, DPI and shape, or turn it into Base64 code and back.

Metadata viewer

See EXIF data: camera, lens, date, GPS location and more.

Width, height, aspect ratio and megapixels of any image.

Check an image's DPI and print size, and change it.

Work out ratios like 16:9 and resize without stretching.

Encode images as Base64 or data URIs for HTML and CSS.

Decode Base64 strings and data URIs back into images.

Copy text from screenshots, photos and scans.

Set images to 300 DPI for printing, without losing quality.

Aspect ratio explained: how to calculate and keep it
What aspect ratio means, how to calculate it from width and height, common ratios like 16:9, 9:16, 4:5 and 1:1, and how to resize without stretching.
Base64 images and data URIs explained
What a Base64 image and data URI are, how to use them in HTML, CSS and email, when embedding is a bad idea, and how to convert Base64 back into an image file.
How to check an image's size in pixels
Find an image's width and height in pixels, its aspect ratio, megapixels and file size, for one image or many at once. Dimensions vs file size explained.
How to check the DPI of an image (and change it to 300 DPI)
How to check the DPI of an image online, on Windows, Mac and phones, what the number means for printing, and how to change an image to 300 DPI without losing quality.
How to copy text from an image (OCR)
Extract text from screenshots, photos and scanned documents with free OCR in your browser, in English and a dozen other languages. Tips for accurate results.
Image DPI for printing, explained
What DPI really means, why it doesn't change how an image looks on screen, how big a photo can be printed, and how to change DPI without losing quality.
What is EXIF data?
What EXIF metadata is, what it can reveal about a photo (camera, settings, date, GPS location), how to view it and how to remove it.