PNG Metadata Viewer

Upload a PNG file to inspect its embedded metadata — including image dimensions, color type, bit depth, compression details, and any hidden text chunks added by cameras or software. Your file never leaves your browser.

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PNG files only — no upload, fully private

Metadata

File Info

Image Header (IHDR)

Embedded Text Chunks

Chunk	Keyword	Value

All PNG Chunks

Chunk	Size (bytes)	Notes

What Is PNG Metadata?

PNG files are structured as a series of "chunks" — self-contained blocks of data each identified by a 4-letter type code. The mandatory IHDR chunk stores the image width, height, bit depth, and color type. Optional chunks carry extra information:

tEXt — Plain-text key/value pairs, often added by Photoshop, GIMP, or camera software. Common keys include Author, Copyright, Software, and Creation Time.
iTXt — International (UTF-8) text, used by Adobe XMP metadata and some modern tools.
zTXt — Compressed text, same purpose as tEXt but deflate-compressed.
eXIf — EXIF data block (GPS coordinates, camera model, exposure settings).
iCCP — Embedded ICC color profile for accurate color reproduction.
gAMA — Gamma correction value.
sRGB — Declares that the image uses the sRGB color space.
bKGD — Background color suggestion.

Understanding the chunk structure can help you troubleshoot color issues, verify image authorship, locate GPS coordinates embedded by phones, or strip sensitive metadata before sharing images online.

Privacy Note

This tool reads your PNG file entirely within your browser using the JavaScript FileReader and ArrayBuffer APIs. No data is transmitted to any server. The file is processed in memory and discarded when you leave the page.