extension ExtPose

HTML Diff Check Tool

CRX id


Description from extension meta

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

Image from store HTML Diff Check Tool
Description from store 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] - Traffic data of the application is analyzed via GoogleAnalytics. - The registered domains, URLs or HTML sources are not sent to third parties. [release note] -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.

Latest reviews

  • (2021-02-17) Georgii Trofymov: Didn't work for me. For every page I wanted to compare it showed the alert "this page is not supported"
  • (2021-02-09) Scott Silliman: I couldn't this to work. all I get is an alert with chinese text in it and a checkbox asking whether to disable further alerts from this extension. when trying to open or diff. perhaps this works, but some instructions please?? totally willing to re-rate if I had instructions.
  • (2019-11-20) chris clark: didn't work for me, every page I attempted to use had the message "This page is not supported."
  • (2019-05-05) chrome-17-18 shoora_backup: Великолепно! Работает на отлично! Удобно!
  • (2018-09-24) Ch Ho: It does exactly what it says on the tin: it compares the html in two different tabs, or the current tab with the same page on a test server (regular expression string substitution). The differences are shown side-by-side, like Meld does. I really appreciate that it is self-contained, and doesn't send data to a server owned by the extension developer to do the processing. Wishlist: reloading the same page and alerting when the contents change, and being able to ignore certain strings (like security tokens that change on every reload).
  • (2018-01-28) Daniel Moore: Works as described and useful. Wishlist: compare multiple servers at once; add headers (like Host) to request for subset of servers.
  • (2017-07-08) y sugano: If you often check the co-worker/out source worker's codes, this extention will be useful tool.
  • (2017-06-28) yu tani: Very useful for all web developers. You can quickly check differences of web sites' html source.
  • (2017-02-08) zyass tak: HTMLソースレベルで差分を比較できるので、 更新の見落としを防げて便利です。
  • (2017-01-12) Ami Oooo: とてもいい機能。助かっています。

Latest issues

  • (2020-12-23, v:2.1.0) dz wzg: About your support
    We are considering to use your service within the company. As our security department concern, I would like to ask you whether you have any support like fixing support and so on or not when we have a ploblem.
  • (2020-05-07, v:2.1.0) harish takle: Page is not supported
    Not able to view the page and it is not supporting


6,943 history
4.3 (15 votes)
Last update / version
2021-01-06 / 2.2.2
Listing languages
en ja