What does the JSON contain?

File details plus PNG metadata read from the file's chunks: width, height, bit depth, colour type, interlacing, alpha channel and tRNS transparency, DPI, gamma, colour profile name, animation frame count, text fields (tEXt/iTXt/zTXt) and the list of chunks.

What is the data URI for?

It embeds the whole image as text (data:image/png;base64,…), which you can paste into HTML, CSS or a JSON API.

How big is the pixel array?

Around 15 bytes per pixel, so a 1000×1000 image gives about 15 MB of JSON. Images over 4 megapixels are skipped for the pixel array.

Are my files uploaded anywhere?

No. The conversion runs entirely in your browser, so your files never leave your device and nothing is stored on our servers.

PNG to JSON

Extract metadata from PNG images to JSON. Convert multiple files at once. No signup, no limits, 100% free.

No sign-up Batch convert 100% free

Drop PNG images here to convert to JSON

or click to browse · Metadata, Base64 data URI and optional pixel array · Nothing is uploaded

Include Base64 data URIEmbed the whole image as data:image/png;base64,… (about 1.33× the PNG size).Include pixel array (RGBA values)Large output: roughly 15 bytes per pixel, so a 1000×1000 image gives a ~15 MB file. Images over 4 MP are skipped.

How useful is PNG to JSON?

How to Use PNG to JSON

Add your PNG images

Add your PNG images — drop one or more PNGs, or click to browse

Pick what to include

Pick what to include — Base64 data URI and/or the pixel array

Convert to JSON

Convert to JSON — then check the preview

Copy or download

Copy or download — copy the JSON or save the .json file

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