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Build a Next.js JSON Editor Offline Web App to Format,Validate & Minify JSON in Browser Using TS
Mar 13, 2026
Buy the full source code of application here:
https://procodestore.com/index.php/product/build-a-next-js-json-editor-offline-web-app-to-formatvalidate-minify-json-in-browser-using-ts/
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0:00
Uh hello guys, welcome to this uh video.
0:03
So in this video, I'll show you I built
0:05
out a complete uh NexJS
0:09
uh ReactJS uh JSON editor directly in
0:13
the browser. So I'm running it inside
0:15
the browser. As you can see, it's
0:17
developed in ReactJX.
0:19
So it has all the features. It can
0:21
format your JSON code, validate it,
0:24
minify it directly in the browser,
0:26
single page application. So right here
0:28
this is either you can paste
0:32
your JSON directly as you can see I
0:34
pasted the JSON right here on the left
0:36
hand side it also shows me the total
0:40
data types which are present. So there
0:42
are six objects right here. You can view
0:45
it inside the tree mode with the syntax
0:48
highlighting. It clearly shows you the
0:50
actual property, the actual type
0:53
like this. You can actually expand this.
0:57
So it clearly shows you if you have a
0:59
bunch of JSON inside the split view. And
1:02
then we have a bunch of buttons right
1:04
here. We can actually format this JSON
1:07
by clicking this button and JSON will be
1:09
formatted. We also have the option to
1:11
minify it as well. If I click the minify
1:14
button, JSON will be minified instantly.
1:17
[snorts] And now you can simply see all
1:19
the JSON has been minified. So it's
1:22
basically developed in Nex.js and
1:24
ReactJS. So this is actually you can see
1:27
we using the latest NexJS version and
1:30
also the React version 19
1:33
syntax highlighting. So I'm just running
1:36
this locally as you can see on my
1:38
terminal. So if you need the full source
1:41
code of this project, I've given the
1:42
link in the description. You can
1:44
directly purchase it. So once you
1:46
purchase it, you will actually get the
1:48
zip file from Google Drive
1:49
automatically. All the components are
1:51
divided into its appropriate uh
1:54
TypeScript file here. As you can see,
1:56
application has multiple components. So
1:59
once you get the source code, it will be
2:00
easy for you to see how I coded this
2:03
application and also be able to add
2:05
additional features on top of it and
2:08
also modify the user interface if you
2:11
want to. So this is the overall
2:13
structure of the application. Each file
2:15
has its own TypeScript file here. So
2:19
apart from that, we also have the
2:21
validate button as well. So once you
2:23
click the validate button, it will
2:25
actually scan the entire JSON and it
2:28
will give you at this bottom
2:30
notification that your JSON is valid.
2:33
You can even clear out everything by
2:35
clicking the clear button and you can
2:37
even load an external JSON file as well
2:40
by clicking this load button. So right
2:43
here now you can actually
2:45
basically load an external JSON file
2:48
that needs to be edited. And now again
2:51
you click the format button. It will
2:52
instantly with a single click it will uh
2:55
format your JSON file. So it will save
2:57
you a lot of time. If you purchase it
3:00
this project
3:02
uh you will be able to format minify
3:06
validate JSON file in a single click.
3:09
you click the validate button and if you
3:12
make let's suppose I make any sort of
3:13
mistake here I forgot this uh bracket or
3:18
[sighs]
3:20
comma then I click the validate button
3:22
exactly at line number it tells you the
3:25
so line position four of 4.4 four line
3:28
number eight.
3:31
So here if I fix this by adding this
3:37
so once again the JSON will be validated
3:40
and you can minify it format this copy
3:44
to clipboard as well. You can even
3:46
compare it as well. So you can here you
3:50
can compare it with different JSON file
3:53
as well. So right here on the right hand
3:55
side you can compare it.
3:58
No difference is found. So if you make
4:00
any sort of
4:05
so it exactly tells you the difference
4:07
between the two two files. So you can
4:09
even do comparison of different JSON
4:12
files as well. So this is a split view.
4:14
This is a tree view. This is the overall
4:17
editor. So if you are interested guys
4:19
you can directly purchase the full
4:20
nextJS project. uh after purchasing it
4:24
you will be getting the source code from
4:26
Google drive automatically. So this is
4:28
the full directory structure. I coded
4:30
this from scratch. So definitely check
4:34
out this. The link is given in the
4:36
description. So I basically show you all
4:38
the feature here. And then we also have
4:40
the basically this feature as well. You
4:42
can convert your JSON file into vable
4:45
XML CSV
4:48
all these things. So if you want to
4:49
convert this into CSV, you basically
4:52
first of all
4:55
you need to paste it.
4:59
You can basically bring the JSON file
5:02
from anything. So if you are searching
5:04
from a
5:07
if you're working with a API
5:10
response as well let's suppose I
5:18
I just paste it. So now you will
5:24
it will convert this JSON into CSV. As
5:27
you can see you can copy to clipboard as
5:29
well.
5:32
Similarly, we can convert this into XML.
5:35
You can see now it successfully
5:37
converted and show the output. Again,
5:39
you can copy to clipboard. So, apart
5:42
from these uh formatting, validating and
5:45
minifying capabilities, we also have
5:47
option to convert your JSON into YML,
5:49
XML, CSV. So, if you're interested guys,
5:51
this is a full fullyfledged single page
5:54
application having all the features.
5:56
It's an offline editor. It doesn't
5:58
require internet. So once you purchase
6:01
it, it will be easy for you to deploy
6:02
the application and also run this
6:04
locally as well. So definitely check out
6:07
this