# itk::JSONImageIO class missing from ITK library?

**URL:** https://discourse.itk.org/t/itk-jsonimageio-class-missing-from-itk-library/5275
**Category:** Engineering
**Tags:** itk-js
**Created:** [August 18, 2022, 2:28pm UTC](https://discourse.itk.org/t/itk-jsonimageio-class-missing-from-itk-library/5275 "2022-08-18T14:28:47Z")
**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, 2:28pm UTC](https://discourse.itk.org/t/itk-jsonimageio-class-missing-from-itk-library/5275/1 "2022-08-18T14:28:47Z")

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Hi,

I am trying to convert \<image.png\> file into \<image.png.json\> file. Can anyone in the forum help me to find the class, i have been searching for it for last two days and nothing found.

Thank you  
@sag

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### Author: ![matt.mccormick](https://discourse.itk.org/user_avatar/discourse.itk.org/matt.mccormick/32/7_2.png) [@matt.mccormick](https://discourse.itk.org/u/matt.mccormick)
#### Post date: [August 23, 2022, 1:11am UTC](https://discourse.itk.org/t/itk-jsonimageio-class-missing-from-itk-library/5275/2 "2022-08-23T01:11:37Z")

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Hi,

`itk::JSONImageIO` was created for itk-js and is deprecated. It has been replaced by `itkWASMImageIO` from itk-wasm.

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<div class="post-metadata">

### 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 26, 2022, 2:02pm UTC](https://discourse.itk.org/t/itk-jsonimageio-class-missing-from-itk-library/5275/3 "2022-08-26T14:02:48Z")

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@matt.mccormick

I see Thank you

BR  
@sag