Exporting in your computer
In[]:=
example={{1,-5,8},{1,-2,1},{2,-1,-5}}//MatrixForm
Out[]//MatrixForm=
1
-5
8
1
-2
1
2
-1
-5
Export["folder/teste.jpg",example]
Creating an input
In[]:=
Panel[DynamicModule[{f={{1,-5,8},{1,-2,1},{2,-1,-5}}},Column[{​​InputField[Dynamic[f],ContinuousActionTrue],​​Dynamic[Rasterize[f//MatrixForm,ImageSize300]]​​}]​​]​​]
In[]:=
{{1,-5,8},{1,-2,1},{2,-1,-4}}
Deploying an input form on cloud
In[]:=
CloudDeploy@FormPage["exp""Expression",Rasterize[#exp//MatrixForm,ImageSize300]&]
Out[]=
CloudObject[
https://www.wolframcloud.com/obj/81c8c3be-f612-49bd-a772-e71085914aec
]
In[]:=
exp
{{1,-5,8},{1,-2,1},{2,-1,-5}}
OK