KANTAN Chord icon

KANTAN Chord

by doco · Entertainment
FeaturedManifest V3 Free
View in Chrome Web Store Data as of 15 Oct 2026

This extension will converts various chord sites' song chords to its "degrees", also known as Nashville Numbers.

Users
4,000
0 in 30 days
Rating
4.7 / 5
unchanged in 30 days
Ratings
10
0 in 30 days
Store rank
#16K
#13K among extensions
Version
2026.8.20.0
updated 20 Aug 2026

Users

monthly, 3 years
6002,3004,000Aug 2023Apr 2025Oct 2026
Latest, 15 Oct 2026: 4,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years
1610Aug 2023Apr 2025Oct 2026
Latest, 15 Oct 2026: 10 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 KANTAN Chord

• Overview KANTAN Chord is a browser extension that converts various chord sites' song chords to its "degrees", also known as Nashville Numbers. (Former name: InstaChordizer) • Compatible sites - ULTIMATE GUITAR TABS(https://www.ultimate-guitar.com/) - U-フレット(https://www.ufret.jp/) - 楽器.me(https://gakufu.gakki.me/) - J-Total Music(https://music.j-total.net/) - Guitarians.com(https://guitarians.com/) - 91譜(https://www.91pu.com.tw/) • How to use Open the chord web page. From the browser extensions, choose KANTAN Chord icon and it opens a pop-up window. Choose from tabs "C,F,G" (original) , "I,IV,V" (roman numerals), or "1,4,5" (degrees). - "C,F,G" (original) Displays the chords in its original form. Select radio buttons change keys. - "I,IV,V" (roman numerals) Displays the chords' degrees, in standard roman numerals format. - "1,4,5" (degrees) Displays the chords' degrees, in numbers. Different symbols follow the "KANTAN Chord" system, based on the Nashville Number System. For more details, please visit this page: https://instachord.com/instruction/icn/ • Key analyzation KANTAN Chord automatically analyzes the song's key and displays it in red text with a yellow background banner. When the key changes during a song, it will be displayed with additional banners. E.g. "Key:E(-3)" or "Key:Ab(+1)" Numbers such as (-3) and (+1) represent half steps. If your instrument can transpose, try adjusting to these numbers. If the key analyzation is wrong or is difficult to play, try adjusting the analyzation sensitivity. - Ignore +-5 key changes When changing to a dominant (+5 half steps) or subdominant key (-5 half steps) , chords used will be very similar to its original key. When this option is turned on, KANTAN Chord will ignore +-5 key changes and stay in its original key. • Displayed keys You can choose keys outside of the auto-analyzed key. - Song's analyzed key The song's auto-analyzed most likely key is outlined in a box. - Difficulty rank The numbers in front of the key (Eg. ①, ②, ③...) are difficulty ranks when playing on the InstaChord, from easiest to most difficult. Please use as reference, when the analyzed key if wrong or when the original key is difficult to play. ① and ② are in bold, and ① is underlined. - Changing they key (in C,F,G tab) When in the C,F,G tab, you can pick different keys to transpose to. - Changing they key (in I,IV,V or 1,4,5 tab) In I,IV,V or 1,4,5 tab, you can change the base key. Apply when the analyzed key is wrong, or when the original key is difficult to play. If other keys are greyed-out, turn off analyzation sensitivity. • Options for C,F,G tab - Disable automatic loading KANTAN Chord will not take effect until the icon is pressed. Use this option if there are compatibility issues with the site's features or other extensions. This option is only effective in the C,F,G tab. - Hide key display KANTAN Chord displays the song's key and displays it in red text with a yellow background banner. Use this option to hide the key display. This option is only effective in the C,F,G tab. • Options for I,IV,V tab - b → # All half tones are represented with # - IIm, VIm → ii, vi Minor chords are represented with lower case roman numerals. • Options for 1,4,5 tab - 3b/7b → 8/9 (5b/2b → 8/9 for minor key) For the InstaChord, commonly used chords are allocated on the 8 and 9 buttons. Using this option will make use of these buttons. - Use minor key Allows the use of minor key • Beginner mode By selecting 🥚LV.0 / 🐤LV.1 / 🐔LV.2 shown on the first line, you can adjust the difficulty of the chords. In 🥚LV.0 / 🐤LV.1 mode, chords will be simplified. In 🐔LV.2 mode, all chords will be in their original form. This mode isl not available when minor key is selected.

Growth

WindowUsersChangeRatingsRating
7 days0+0.0%00.00
30 days0+0.0%00.00
6 months0+0.0%00.00
1 year0+0.0%+2+0.08

Chrome Web Store search rankings

Where KANTAN Chord appears when people search the store, with the 30 day change
Search phrasePosition30 days
transpose#240

Version history

23 versions recorded
2026.8.20.020 Aug 2026
2026.7.25.024 Jul 2026
2025.3.6.06 Mar 2025
2025.2.20.019 Feb 2025
2024.11.20.020 Nov 2024
2023.10.1.03 Oct 2023
2023.8.8.06 Aug 2023
2023.7.28.028 Jul 2023

Details

Category
Entertainment
First seen
15 Sep 2021
Size
110 KB
Languages
en, ja
Pricing
Free
Extension ID
ncdpcgdgemdklhocjgecijjjhaboopbp

Permissions and risk

Low riskimpact 2, likelihood 1
Permissions
tabsstorage

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