Firefox
Web Developer
Topics
Developer tools
Web Developer has 67,338 daily users (+2.4% in 30 days), rated 4.3 from 495 ratings, #18 of 15,225 in Web Development.
Daily users
67,338
+1,364 (+2.1%) a week, measured over 9 days
Rating
4.3
495 ratings
+0 ratings (0.0%) a week, measured over 9 days
Rank on Firefox
#288
of 632,699
down 3 since 2026-10-29
Version
3.0.1
Last updated 2024-06-25
Weekly downloads
418
Description
The Web Developer extension adds various web developer tools to the browser.
Reviews In every language.
5★
68%
4★
14%
3★
5%
2★
4%
1★
8%
From 495 ratings · 1★ share 8% (was 8% four weeks ago).
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★★★★★ skevil · 26 Apr 2026 · v3.0.12026 and still great—one of the select few Firefox extensions I allow to have pinned to the toolbar which tells you this is truly a 5/5⭐ extension.
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★★★★★ chriet · 6 Sep 2025 · v3.0.1работает на все сто процентов!
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★★★★★ amcginn · 4 Jul 2025 · v3.0.1This is probably my longest-used add-on over the decades I've been using Firefox. It's always the quickest and easiest way to get the information you need about a page—from anchor links to content sizes and more.
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★☆☆☆☆ Bartson2 · 24 May 2025 · v3.0.1rainbows are all over ext
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★★★★★ 4qua_ · 4 Jan 2025 · v3.0.1too perfect for a free extention
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★★★★★ Philmil0055 · 2 Jan 2025 · v3.0.1hello claw gaming ghostReconBreakpoint
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★★★★★ ZayneH · 19 Nov 2024 · v3.0.1Amazing tool!
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★★★★★ Firefox user 18446031 · 9 Jun 2024 · v2.0.5very useful thing for me
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★★★★★ Denis Design · 27 May 2024 · v2.0.5A good app. That i use for working. Thanks a lot.
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★★★★★ David · 14 Apr 2024 · v2.0.5What's that? Oh - I just thought, like going by the other reviews - it just seems quite safe to give this extension a 5 star rating. I've yet to actually try it or anything. I guess you might say this is my way of having a bit of fun on your behalf. teehee
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 | +1,457 | +2.2% | +1,566 | 1.1 days |
| week | +1,364 | +2.1% | +1,797 | 9.2 days |
| month | +1,584 | +2.4% | +2,069 | 39.2 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.
Rank among tracked Firefox listings#288
2026-09-29 · #171
2026-11-07
Daily users67,338
2026-09-28 · 65,269
2026-11-06
Ratings495
2026-09-28 · 494
2026-11-06
New ratings per month+0 so far
Sep 28
Nov so far
Average rating4.3
2026-09-28 · 4.3
2026-11-06
Weekly downloads418
2026-09-28 · 469
2026-11-06
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