PNG Metadata Cleaner
Inspect and remove supported PNG metadata in your browser while preserving image data and rendering-critical chunks. APNG and unsupported structures are refused.
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Selective PNG metadata cleaning
Supported text, eXIf, and descriptive metadata chunks are removed. Image data and recognized rendering-critical chunks are preserved; APNG and unsupported structures are refused.
Validating file…
Error
View Detailed Metadata Tags
Removing metadata…
Removed
Removed
Retained rendering structures
Unknown structures
PNG metadata removed and verified
Supported metadata chunks were removed. Image data and retained PNG structures passed output verification.
How PNG metadata cleaning works
The PNG standard (ISO/IEC 15948) stores image data and ancillary metadata in typed chunks. This cleaner validates recognized chunk boundaries and CRC-32 values, removes supported metadata chunks, and copies the image data without recompression.
| Chunk type | Action | Contents and privacy impact |
|---|---|---|
| eXIf | Removed | May contain GPS location, camera make and model, and creation dates. |
| tEXt / zTXt / iTXt | Removed | Text may include software details, prompts, or author names. |
| tIME / hIST / bKGD | Removed | Descriptive chunks are removed; bKGD may affect background rendering in some viewers. |
| IHDR / PLTE / tRNS / IDAT / IEND | Preserved | Image data and required structural chunks are copied and checked. |
| iCCP / sRGB / gAMA / cHRM / sBIT / pHYs | Retained | Color, rendering, and resolution information is retained. |
| acTL / fcTL / fdAT | Cleaning refused | APNG animation is detected but is not supported for cleaning. |
Format limitations and APNG notice
Cleaning is refused for APNG files, unsupported ancillary chunks, unknown critical chunks, or malformed structures. Recognized image data is copied without recompression; successful output checks are limited to the listed PNG structure and preservation invariants.
Also available for other formats: