HTML Tag Checker by ACHN

Name: HTML Tag Checker by ACHN
Rating: 5 (1 reviews)
Author: ACHN

It checks HTML start and end tag pairs, etc. It also works with split HTML and forms sent via POST. (No external communication.)

As of June 2026, HTML Tag Checker by ACHN has 41 users and a 5.00/5 rating from 1 reviews in the Developer Tools category.

ACHN Developer Tools

Chrome Web Store ↗.crx

Users+10.8%

Rating0%

5.00

1 reviews

Reviews0%

Version

0.1.6.8

Manifest V3

History

9 snapshots

Tracking since Apr 1, 2026.

View as table

Date	Users	Rating	Reviews	Version
Apr 1, 2026	37	5.00	1	0.1.6.8
Apr 10, 2026	35	5.00	1	0.1.6.8
Apr 20, 2026	37	5.00	1	0.1.6.8
Apr 25, 2026	40	5.00	1	0.1.6.8
May 2, 2026	40	5.00	1	0.1.6.8
May 9, 2026	36	5.00	1	0.1.6.8
May 14, 2026	37	5.00	1	0.1.6.8
May 26, 2026	38	5.00	1	0.1.6.8
Jun 2, 2026	39	5.00	1	0.1.6.8
Now	41	5.00	1	0.1.6.8

Permissions & access

Permissions: storage
Host access: None declared

Screenshots

About

If the HTML tag pair is incorrect, you can jump to the start and end tag positions to check.

[MAIN FUNCTIONS]
● You can view the browser's communication log in a list and check the details of each content.
● If the content is HTML, an HTML tag check is performed automatically.
● If there is an error in the HTML tag, the following colors will be displayed.
・ Yellow "Warning": A part that should be corrected if possible, such as when a tag is not closed.
・ Red "Error": A part that should definitely be corrected, such as when a start tag is missing.
→ You can jump to each source position and check.
● Click on the correct pair of HTML tags to jump to the paired tag.
● If an HTML tag is misidentified, you can add, change, or delete the HTML tag detection in the settings.
● If the content is a font, you can perform a detailed font check. (You can also enter text freely)
● In the communication log list, you can narrow down the logs to be displayed by URL or content.
[e.g.]
html: Display only html.
error: Display only content with link errors, etc.
redirect: Display only redirected content.
● You can also set URLs that you do not want to record in the communication log.
● You can also set line wrapping and indentation when displaying source code.

[SUPPORT]
If you have any comments, requests, or bugs, please contact us via the "Website" or "Email" links at the bottom of this page.
(There is also a link in the extension's "How to Use" section.)

[REVIEWS]
If you like this extension, please leave a review.
Your review will encourage future extension development.

[UPDATE HISTORY]
・ v0.1.6.8 (2026/02/27)
- Add: The HTML check results list is now resizable.
- Add: "Developer Debug Flag" to settings.
- Fix: Review URL.
- Change: Improve Form processing.

・ v0.1.6.7 (2026/02/23)
- Change: Default language to English.
- Add: Display HTML check results in HTTP list.
- Change: Backported debug functions.

・ v0.1.6.4 (2025/07/18)
- Change: Description.

・ v0.1.6.3 (2025/06/12)
- Change: Extension name.

・ v0.1.6.2 (2025/06/01)
- Add: The setting "Filter Initial Value".

・ v0.1.6.1 (2025/05/31)
- First release