Firefox

JSON Beautifier & Editor

JSON Beautifier & Editor has 676 daily users, rated 3.8 from 15 ratings, #476 of 15,053 in Web Development.

View in the Firefox store ↗
Daily users
676
+20 a week, measured over 11 days
Rating
3.8
15 ratings
+0 ratings a week, measured over 11 days
Rank on Firefox
#4,429
of 631,272
up 53 since 2026-10-22
Version
0.6.7
Last updated 2026-08-26
Weekly downloads
10

Also in the last two weeksclimbed 53 places this week

Description

Display JSON objects by transforming them into Syntax editable highlighted HTML

Reviews In every language.

From 15 ratings.

  1. ★★★☆☆ Ihor Tarkhan · 9 Mar 2026 · v0.6.6
    It's too annoying that in Firefox version its replacing original URL (for example http-s://api.github.com/repos/tulios/json-viewer) with moz-extension://9d9f107e-28d1-4f57-a1b5-0913be97e86e/data/page/index.html?remote&href=https%3A%2F%2Fapi.github.com%2Frepos%2Ftulios%2Fjson-viewer I, as a developer, need to change url that i testing, but it hard to do But for chrome, and safari its haven't such "feature"
  2. ★☆☆☆☆ Cyberknight · 25 Oct 2024 · v0.5.5
    It works... Not as expected, but it works... I expected it to be integrated with Firefox, opening a JSON file directly from it, or entering edit mode on an open JSON (since Firefox 53, JSON files are natively viewable in it, so there's no need for JSON viewer extensions.) Long story short, it doesn't. Not only that, but it also cannot load or save JSON, it literally is a JSON editor, ONLY an editor, without any other functionality, not even load/save! The JSON data must be copied and pasted into the editor window and, after any editing is done, the code copied and pasted back out into a JSON f
    moreile. The editor is awkward to use (at least, it has collapse/expand all options).
  3. ★★★★★ Armin · 11 Apr 2023 · v0.2.2
    Love the way it formats, sorts and present the JSONs. A must have for all developers! #QualityOfLife+
  4. ★★★★★ Nijaz Muratović · 20 Apr 2021 · v0.2.2
    Can open large JSON files of 18 MB, something that Firefox internal json viewer can't (but simply opens it as text files). Also better because this is editor too.
  5. ★☆☆☆☆ Mr.Robot · 6 Nov 2020 · v0.2.0
    无法使用
  6. ★☆☆☆☆ David Spector · 12 Oct 2020 · v0.2.0
    The text colors used are so light I can barely see them. Long gone are the days of black on white text. There seems no way to select different colors. In addition, the text is quite small, with no apparent way to zoom in. I can't see the text well enough even to evaluate this product and compare it with JSONedit, a nice standalone JSON editor and beautifier.
  7. ★★★★★ amirreza safari · 21 Feb 2020 · v0.1.6
    SAFARIAMIRREZAJSONBEAUTIFULEDITORASARTAMIRREZA9
  8. ★★★★★ Tesla · 23 Nov 2019 · v0.1.6
    I was thinking it was not working until i discovered that firefox had its own json viewer so i had to disable it on about:config devtools.jsonview.enabled, will be cool a dark mode.

Search Firefox reviews - every stored review from the store, not only this listing's.

Growth change in installs

Per Growth Growth % Actual change Measured over
day +15 — +28 1.9 days
week +20 — +31 10.6 days
month +39 — +43 33.1 days
year Not enough history yet
How these figures are measured

Change in installs, scaled to each window from the real gap between crawls. A window needs a full period of history before it reports anything.

Daily users676
2026-09-28 · 633 2026-10-31
Ratings15
2026-09-28 · 15 2026-10-31
Average rating3.8
2026-09-28 · 3.8 2026-10-31
Weekly downloads10
2026-09-28 · 11 2026-10-31

Alternatives to JSON Beautifier & Editor

Name Daily users Rating
JSON Lite by Lauri Rooden 10,064 4.5
JSON Formatter by Arnav Kumar 3,666 5.0
Basic JSON Formatter by Dr. McKay 2,105 4.6
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JSON Viewer Pro by bIONArAq 1,113 4.3
JSON-handle by stonepurple 1,006 4.1
JSON Viewer by li0ard 809 3.5
HAR/JSON viewer by Savr Goryaev 631 5.0
JSON Beautify It by Igor Lazarev 418 3.6
JSON-LD Schema Extractor by FlorianD 401 5.0

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