Web tool Bazar

PNG Metadata Viewer

Upload a PNG image to view its metadata: dimensions, color type, bit depth, compression, and any text chunks (tEXt, zTXt, iTXt). 100% private, no upload, all in your browser.

IHDR info Text chunks No upload Sample included

Drag & Drop PNG Here

or click to browse (PNG only)

Max file size: 50MB

About PNG Metadata

PNG files store metadata in chunks. The essential IHDR chunk contains image dimensions, bit depth, color type, etc. Textual data can be stored in tEXt (uncompressed), zTXt (compressed), or iTXt (international) chunks.

This tool parses all chunks and displays their content. No data is sent to any server.

File Info

No PNG selected

100% Private

Files never leave your device.

All Chunks

IHDR, tEXt, zTXt, iTXt, and more.

Text Extraction

Read comments, author, etc.

Sample PNG

Test with a generated image.

Free PNG Metadata Viewer – Extract Hidden Info

Welcome to Web tool Bazar's PNG Metadata Viewer. This tool allows you to inspect the internal structure of any PNG image. You can see the image dimensions, color type, bit depth, compression method, and any text chunks embedded by editors (like comments, author, software, etc.). All processing happens in your browser – no upload, no privacy concerns.

🔍 What Metadata Can You See?

  • IHDR chunk: Width, height, bit depth, color type, compression, filter, interlace.
  • Text chunks: tEXt (uncompressed key-value), zTXt (compressed), iTXt (international).
  • Other chunks: gAMA (gamma), pHYs (pixel dimensions), sRGB, etc.
  • File size and signature validation.

This information is useful for photographers, web developers, and digital forensics.

📋 Step-by-Step Guide

  1. Upload your PNG – Drag & drop, click to select, or use the sample PNG (generated locally).
  2. View metadata – The tool parses the file and displays all chunks in a structured format.
  3. Explore – Expand sections to see details. For text chunks, the decoded text is shown.

⚙️ Technical Details

We read the PNG file as an ArrayBuffer and parse its chunks according to the PNG specification. The signature is checked, then each chunk (length, type, data, CRC) is processed. For compressed text chunks (zTXt, iTXt with compression), we use pako to inflate the data. All parsing is done client-side.

Limitations: The tool does not validate CRC (though it could). It focuses on displaying metadata rather than verifying correctness. Maximum file size is 50MB to ensure performance.

🧐 Frequently Asked Questions

Can I see the actual image?

This tool is for metadata only. For viewing the image, use a regular image viewer.

What are tEXt chunks?

They store key-value text pairs, e.g., "Author", "Description", "Software". Many image editors add such metadata.

Is it really private?

Yes. All processing happens in your browser; no data is uploaded to any server.

What does the sample PNG contain?

A small gradient image with a tEXt chunk "Author" : "Web tool Bazar" and "Comment" : "Sample PNG".

Last updated: March 2026 | Words: ~1050