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Browser Extensions · head to head

JSON Viewer vs Web Developer

JSON Viewer logo

JSON Viewer

Browser Extensions

View JSON documents in the browser

From
Free
Rated
-
Full reviewWebsite
Web Developer logo

Web Developer

Browser Extensions

Web developer toolbar for browsers

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: JSON Viewer the project is MIT licensed open source code hosted on GitHub with no vendor and no paid tier; Web Developer the Web Developer browser extension is licensed GPL-3.0 per its GitHub repository (github.com/chrispederick/web-developer), which states 'All files are distributed for free under the terms of the GNU General Public License,' confirming it has no vendor pricing model to compare.
  • They diverge on capability: JSON Viewer covers JSON formatting, Web Developer covers CSS inspection.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which JSON Viewer and Web Developer actually diverge.

Attributes where JSON Viewer and Web Developer differ
AttributeJSON ViewerWeb Developer
PlatformsChrome, Firefox, EdgeChrome, Firefox, Edge, Opera
Founded20152003

Identical on both: starting price (Free), pricing model (free), free tier (Yes), user rating (Not yet rated), category (Browser Extensions).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in JSON Viewer

  • JSON formatting
  • Syntax highlighting
  • Tree view
  • Search functionality

Only in Web Developer

  • CSS inspection
  • Form debugging
  • Image analysis
  • Element outlining
  • Opera support

Both cover

  • Chrome support
  • Firefox support
  • Edge support

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

JSON Viewer

  • The project is MIT licensed open source code hosted on GitHub with no vendor and no paid tier

Web Developer

  • The Web Developer browser extension is licensed GPL-3.0 per its GitHub repository (github.com/chrispederick/web-developer), which states 'All files are distributed for free under the terms of the GNU General Public License,' confirming it has no vendor pricing model to compare.

Pricing, plan by plan

JSON Viewer

Free
  • FreeFree
    • Syntax highlighting
    • Collapsible tree
    • Search

Web Developer

Free
  • FreeFree
    • CSS tools
    • Form tools
    • Image tools

Which should you pick?

Choose JSON Viewer if

  • You need json formatting.
  • You want to start without paying.
  • You work on Chrome, Firefox, Edge.
  • You also want syntax highlighting.
JSON Viewer review

Choose Web Developer if

  • You need css inspection.
  • You want to start without paying.
  • You work on Chrome, Firefox, Edge, Opera.
  • You also want form debugging.
Web Developer review

Questions people ask

Is JSON Viewer or Web Developer better?
Neither clearly leads. JSON Viewer starts at Free and Web Developer at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, JSON Viewer or Web Developer?
JSON Viewer starts at Free and Web Developer at Free.
Does JSON Viewer or Web Developer run on more platforms?
JSON Viewer runs on Chrome, Firefox, Edge. Web Developer runs on Chrome, Firefox, Edge, Opera.
Can I use JSON Viewer for free?
Both have a free tier, so you can try either at no cost before committing.
What can JSON Viewer do that Web Developer cannot?
JSON Viewer covers JSON formatting, Syntax highlighting, Tree view, Search functionality. Web Developer covers CSS inspection, Form debugging, Image analysis, Element outlining. Both handle Chrome support, Firefox support, Edge support.
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