HTML Diff Check Tool icon

HTML Diff Check Tool

by scott · Developer Tools
FeaturedManifest V3 Free
View in Chrome Web Store Data as of 15 Oct 2026

Tool for checking HTML difference between tabs ,or between production and development environment.

Users
10K
0 in 30 days
Rating
4.4 / 5
unchanged in 30 days
Ratings
17
0 in 30 days
Store rank
#8,951
#7,659 among extensions
Version
3.0.0
updated 24 Jun 2024

Users

monthly, 3 years
3,0006,50010KAug 2023Apr 2025Oct 2026
Latest, 15 Oct 2026: 10,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years
51218Aug 2023Apr 2025Oct 2026
Latest, 15 Oct 2026: 17 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About HTML Diff Check Tool

HTML Diff Check Tool is chrome addon for checking difference between tabs or between Production and Development. You can check HTML diff with other tab. You can open the URL of production and development server each other with pre-register pairs of those URLs. Also, you can check HTML diff of them. [usecase] - To check the difference between a testing and production environment before/after deployment. - When your co-worker asks you to check a testing environment which he/she updated. [How to use] 1. In the settings register the combination of a testing and production environment domain (including a subdomain). 2. Turn on the "balance scale" icon or select from context menu at the web page where you want to check a testing or production environment. 3. Click the "open" button then a testing or production environment domain will be opened. 4. Click the "diff" button so you can check the difference between the HTML sources. [about privacy] - The registered domains, URLs or HTML sources are not sent to third parties. - According to correspond to manifest v3, analyzed via Google Analytics is stopped. [release note] -v.3.0.0 correspond to manifest v3 -v.2.2.0 Add to context menus. -v.2.0.0 Add function for checking diff with other tab. -v.1.6.0 Add a comment box (Google form) Link -v.1.5.0 Change UI design a little. -v.1.4.0 Change Wrap Lines Function is added. ShortCutKey is also added. Alt + Down (Go to next diff) / Alt + Up (Go to prev diff) / Alt + w (Change Wrap Lines) Bug fix. -v.1.3.0 Nex/Prev Diff and Search Functions are added. -v.1.2.0 -v.1.1.0 bug fix -v.1.0.0 Add alert when it could not access to target url. -v.0.2.0 You can also use in incognito mode. Fix bug and strings. - v.0.1.11 You can also check HTML diff include JavaScript rendered HTML. Change option for that, if you need.

Growth

WindowUsersChangeRatingsRating
7 days0+0.0%00.00
30 days0+0.0%00.00
6 months0+0.0%00.00
1 year0+0.0%00.00

Chrome Web Store search rankings

Where HTML Diff Check Tool appears when people search the store, with the 30 day change
Search phrasePosition30 days
html#31+8

Version history

4 versions recorded
3.0.024 Jun 2024
2.2.26 Jan 2021
2.2.03 Jan 2021
2.1.023 Jan 2020

Details

Category
Developer Tools
First seen
23 Jan 2020
Size
1.5 MB
Languages
en, ja
Pricing
Free
Extension ID
fjbonpakihikkocmockbkndhooihpijo

Permissions and risk

Minimal riskimpact 3, likelihood 0
Permissions
tabsstoragecontextMenusscripting
Site access
http://*/*https://*/*
Can read and change data on every website you visit.

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