Privacy Tool

See what's hiding in your PNG.

Inspect every hidden chunk - EXIF data, GPS coordinates, XMP tags, text comments, ICC profiles and more. 100% private: your file never leaves your browser.

0 bytes uploaded
15+ chunk types
100% client-side

Drop a PNG file to inspect

or click to select a file from your computer

Any PNG file up to 100 MB - processed entirely in your browser

What Are PNG Chunks?

A PNG file is made up of a signature and a sequence of "chunks" - each chunk is a named block of data with a 4-character type code. Critical chunks like IHDR (image header) and IDAT (pixel data) are required for the image to display. All other chunks are optional and carry supplemental information.

Software like Photoshop, Lightroom, iOS and Android add metadata chunks - tEXt, iTXt, eXIf - alongside the pixel data. These chunks are invisible to the viewer but can expose camera model, GPS location, author name, creation date, and editing software to anyone who inspects the file.

Privacy & Security

This viewer runs 100% in your browser. Your PNG file is read with the browser's FileReader API and parsed entirely in JavaScript - no data is sent to any server, no network request is made, and nothing is logged. This makes it safe for inspecting confidential documents, legal files, or any sensitive image.

If the viewer finds metadata you want to remove, use our PNG Metadata Remover to strip all ancillary chunks from up to 20 files at once. Pixel quality is never changed.

Chunk Categories Explained

Sensitive - chunks that may expose personal data: eXIf (camera EXIF with potential GPS coordinates), iTXt with XMP containing author or location fields.

Metadata - informational chunks: tEXt / iTXt / zTXt (text comments), tIME (modification timestamp).

Color - rendering chunks: iCCP (ICC profile), gAMA, cHRM, sRGB. Generally safe to share.

Technical - image structure hints: pHYs (DPI), bKGD, hIST. Not privacy-relevant.

Frequently Asked Questions

No - this tool is 100% client-side. Your file is read directly in your browser using the FileReader API and parsed entirely in JavaScript. Nothing is sent to any server. You can disconnect from the internet and the viewer will still work.

PNG files can contain EXIF data (camera make/model, GPS location, shutter speed, ISO), XMP tags from Adobe software (author, copyright, keywords, creation date), plain and compressed text comments (tEXt, zTXt, iTXt chunks), ICC color profiles, modification timestamps (tIME), physical dimensions/DPI (pHYs), chromaticity and gamma data, background color hints, and more. This viewer detects and displays all of them.

Yes. PNG files converted from JPEG photos (for example, screenshots saved from a gallery app, or images exported via Photoshop) often retain the original EXIF block, which can include GPS latitude, longitude, and altitude. The viewer detects EXIF data and flags GPS presence. Use our Metadata Remover to strip it.

Use our PNG Metadata Remover - it strips all ancillary chunks from up to 20 files at once using pngquant and ImageMagick. The pixel data and visual quality are never changed. If this viewer flags sensitive data in your file, a direct link to the remover appears in the privacy assessment panel.

Most image editors add metadata silently. Photoshop embeds ICC profiles and sometimes XMP. GIMP adds a "Comment" tEXt chunk with its version number. iOS adds EXIF when exporting photos as PNG. Windows adds thumbnail and editing metadata. Even saving a PNG through a web browser can add software identification. This viewer reveals all of it so you know exactly what is present.