# itk::JSONImageIO

**URL:** https://discourse.itk.org/t/itk-jsonimageio/5276
**Category:** Engineering
**Tags:** itk-wasm
**Created:** [August 18, 2022, 2:36pm UTC](https://discourse.itk.org/t/itk-jsonimageio/5276 "2022-08-18T14:36:41Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![sag](https://discourse.itk.org/user_avatar/discourse.itk.org/sag/32/2041_2.png) [@sag](https://discourse.itk.org/u/sag)
#### Post date: [August 18, 2022, 2:36pm UTC](https://discourse.itk.org/t/itk-jsonimageio/5276/1 "2022-08-18T14:36:41Z")

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Hi @dzenanz ,

I have problem finding class itk::JSONImageIO, i wanna convert png images to png.json files. I know we can use itk::JSONImageIO class.

thank you  
@sag

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### Author: ![dzenanz](https://discourse.itk.org/user_avatar/discourse.itk.org/dzenanz/32/1093_2.png) [@dzenanz](https://discourse.itk.org/u/dzenanz)
#### Post date: [August 18, 2022, 3:23pm UTC](https://discourse.itk.org/t/itk-jsonimageio/5276/2 "2022-08-18T15:23:07Z")

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I did see the [other message](https://discourse.itk.org/t/itk-jsonimageio-class-missing-from-itk-library/5275) you posted. Having duplicate posts only creates noise. I have not contributed to itk.js/itk-wasm, so I can’t really help with this question.

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### Author: ![sag](https://discourse.itk.org/user_avatar/discourse.itk.org/sag/32/2041_2.png) [@sag](https://discourse.itk.org/u/sag)
#### Post date: [August 18, 2022, 5:09pm UTC](https://discourse.itk.org/t/itk-jsonimageio/5276/3 "2022-08-18T17:09:20Z")

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Thank you

@sag