Softwr

Browser Extensions · head to head

AdBlock Plus vs JSON Viewer

AdBlock Plus logo

AdBlock Plus

Browser Extensions

The world's most popular ad blocker

From
Free
Rated
-
Full reviewWebsite
JSON Viewer logo

JSON Viewer

Browser Extensions

View JSON documents in the browser

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: AdBlock Plus acceptable Ads allowlist model generates controversy over ad filtering conflicts of interest; JSON Viewer the project is MIT licensed open source code hosted on GitHub with no vendor and no paid tier
  • They diverge on capability: AdBlock Plus covers Ad blocking, JSON Viewer covers JSON formatting.

Where they differ

Only the attributes on which AdBlock Plus and JSON Viewer actually diverge.

Attributes where AdBlock Plus and JSON Viewer differ
AttributeAdBlock PlusJSON Viewer
PlatformsChrome, Edge, Firefox, Opera, Safari, Yandex BrowserChrome, Firefox, Edge
Founded20062015

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 AdBlock Plus

  • Ad blocking
  • Acceptable Ads
  • Custom filters
  • Social media blocking
  • Safari support
  • Opera support

Only in JSON Viewer

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

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.

AdBlock Plus

  • Acceptable Ads allowlist model generates controversy over ad filtering conflicts of interest
  • Smaller feature set compared to open-source alternatives like uBlock Origin
  • Less customization and dynamic filtering compared to uBlock Origin
  • Mobile version less comprehensive than desktop extension
  • Chrome version increasingly limited due to Manifest V3 migration

JSON Viewer

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

Pricing, plan by plan

AdBlock Plus

Free
  • FreeFree
    • Ad blocking
    • Acceptable Ads option
    • Custom filters

JSON Viewer

Free
  • FreeFree
    • Syntax highlighting
    • Collapsible tree
    • Search

Which should you pick?

Choose AdBlock Plus if

  • You need ad blocking.
  • You want to start without paying.
  • You work on Chrome, Edge, Firefox, Opera, Safari, Yandex Browser.
  • You also want acceptable ads.
AdBlock Plus review

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

Questions people ask

Is AdBlock Plus or JSON Viewer better?
Neither clearly leads. AdBlock Plus starts at Free and JSON Viewer at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, AdBlock Plus or JSON Viewer?
AdBlock Plus starts at Free and JSON Viewer at Free.
Does AdBlock Plus or JSON Viewer run on more platforms?
AdBlock Plus runs on Chrome, Edge, Firefox, Opera, Safari, Yandex Browser. JSON Viewer runs on Chrome, Firefox, Edge.
Can I use AdBlock Plus for free?
Both have a free tier, so you can try either at no cost before committing.
What can AdBlock Plus do that JSON Viewer cannot?
AdBlock Plus covers Ad blocking, Acceptable Ads, Custom filters, Social media blocking. JSON Viewer covers JSON formatting, Syntax highlighting, Tree view, Search functionality. Both handle Chrome support, Firefox support, Edge support.

Answered from the vendors’ own pages

AdBlock Plus: What does Adblock Plus block?

Adblock Plus blocks banner ads, pre-roll and mid-roll video ads on YouTube, pop-ups, sidebar ads, and most standard display formats. With Acceptable Ads disabled and EasyPrivacy enabled, it achieved a 100/100 score on AdBlock Tester in April 2026.

Source
AdBlock Plus: What browsers does Adblock Plus support?

Adblock Plus is available for Chrome, Edge, Firefox, Opera, Safari, and Yandex Browser.

Source
AdBlock Plus: Is there a premium version of Adblock Plus?

Yes. Adblock Plus Premium costs $40 annually or $4 per month and allows users to block cookie consent pop-ups, while the free version includes core ad blocking.

Source
AdBlock Plus: What is Acceptable Ads?

Acceptable Ads is an opt-in setting that allows advertising Adblock Plus deems unobtrusive to display on websites; it is disabled by default but can be toggled in Settings.

ShareXLinkedInRedditWhatsAppEmail

Related pages

More on AdBlock Plus

More on JSON Viewer

Keep looking

Other head to heads