alt checker icon

alt checker

by Masaki Ozeki · Developer Tools
Manifest V3 Free
View in Chrome Web Store Data as of 16 Oct 2026

開いているページのimg要素を抽出し、alt属性の確認が可能。画像サムネイルとCSVダウンロード機能も提供します。

Users
23
0 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
1
0 in 30 days
Store rank
#144K
#120K among extensions
Version
1.0
updated 11 Feb 2025

Users

monthly, 2 years
01429Feb 2025Jan 2026Oct 2026
Latest, 16 Oct 2026: 23 usersMove the mouse over the chart for any month

Ratings count

monthly, 2 years
012Feb 2025Jan 2026Oct 2026
Latest, 16 Oct 2026: 1 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 alt checker

Extracts img elements from the open page and allows you to check the alt attribute. We also provide image thumbnail and CSV download functions.

Growth

WindowUsersChangeRatingsRating
7 days0+0.0%00.00
30 days0+0.0%00.00
6 months+1+4.5%00.00
1 year0+0.0%−10.00

Version history

1 versions recorded
1.06 Feb 2025

Details

Category
Developer Tools
First seen
6 Feb 2025
Size
26 KB
Languages
ja
Pricing
Free
Privacy policy
maigo999.github.io
Extension ID
amjddfnjjknmeccccckbmpcdmkmmjhia

Permissions and risk

Minimal riskimpact 0, likelihood 1
Permissions
activeTabscriptingstorage

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