Userscript: Bunpro Toolbox

Ambo100 · August 15, 2026, 1:14am

The script adds options to instantly search the currently viewed grammar point on Bunpro. The following links will be added to the bottom of each grammar page:

Dictionaries, References

Jisho (Dictionary)
Wikitionary (Dictionary)
Eijirou (Example Sentances)

YouTube

YouGlish (Provides context sentences detected in Youtube videos)
YouTube (Grammar videos)

Q&A, Communities

Japanese Stack Exchange (Japanese Q&A website)
HiNative (Languages Q&A website)
WaniKani Forum
r/LearnJapanese Reddit

AI Learning

ChatGPT (Opens ChatGPT and copies a prompt to the users clipboard)

(CAUTION: ChatGPT can be a helpful tool for language learning, but it’s important to remember that its responses may contain inaccuracies or lack context.)

These toolbox button is shown at the bottom-right of the page for each grammar point.

Install Userscript

Bunpro: List of Scripts

Kai · December 10, 2020, 1:01am

I might add this just for 英辞郎 (Eijirou) alone! That site helps me so much with glossing to and from Japanese phrases/collocations

Ambo100 · December 15, 2020, 4:17pm

Yes, I wish more people knew about Eijirou, it really can be quite helpful.

I have updated the script to make it simpler to customise. If anyone has suggestions for links please let me know.

Ambo100 · February 1, 2021, 5:34pm

Update 1.1.0

Two new links added
Section dividers added (with adjustable margins)

Ambo100 · February 7, 2021, 9:34pm

Update 1.1.1

As a bonus feature, the script will now automatically replace broken links from Jgram and Tanos in the resources section with a Web Archive version:

Ambo100 · March 26, 2021, 10:35am

Update 1.5

Added full documentation for Toolbox customisation

New experimental feature to automatically add page links for textbooks to your own locally stored PDF files.

Added a ClearToolbox() function to remove all links and dividers
AddDivider() now allows a custom symbol with the ‘dividerSymbol’ attribute
Added toolbox link for HiNative

evandcs · November 7, 2021, 1:01am

When editing bunpro toolbox, where to I add the pdf command line?

I got confused, is it inside the function AddPDFLink(pdfTitle = ‘’, pdfURL = ‘’, pdfParameters = ‘’){

or do I comment out the example? I would like to add genki, tobira and mina no nihongo pdf files.

Ambo100 · November 7, 2021, 6:28pm

Any customisation to the code should be between

//TOOKBOX SETUP START//

and

//TOOKBOX SETUP END//

So for me I would add this line anywhere in there (I do it after the custom links)

AddPDFLink("Genki II 2nd Edition","file:///C:/Users/ambo/Documents/GenkiElementaryII.pdf");

Because you are loading local files you need to replace the file file directory to match yours in the same format. In your case you would add these three lines with your own file path set. (Must be preceeded with ‘file://’)

AddPDFLink("Genki","FILE_PATH_HERE");
AddPDFLink("Tobira","FILE_PATH_HERE");
AddPDFLink("Mina no nihongo","FILE_PATH_HERE");

Keep in mind that if you have your script to automatically update you may lose any edits you have made to the script so keep a copy.

Ambo100 · November 14, 2021, 7:15pm

I am aware that the recent update update will have broken the functionality of the script, I will work on fixing this as soon as I can.

evandcs · November 14, 2021, 8:17pm

thanks

because after editing the script, it still doesnt recognize the book pdf files.

Ambo100 · November 15, 2021, 10:27pm

Unfortunately it will take quite a bit of time to update the script to work the new layout for PDF links, I have just finished fixing the main toolbox links so they are working and I will focus on bringing an update soon so that the core functionality of the script works.

Update 1.5.1

Update to fix layout changes to the grammar pages
Fixed PDF links for books
Moved toolbox to the top of the page
Added archived replacements for 99bako links
Replaced default divider ‘|’ with space

@evandcs Would you mind updating your script and sending me your setup so I can check what the problem might be?

Ambo100 · December 18, 2021, 11:21pm

Update 1.5.2

Added Bunpro grammar forum link to the toolbar
Added Bunpro Toolbox to the Study page

Yuna2020 · August 25, 2023, 11:48am

Is it just me, or does this not work for anyone else, anymore?

ThePurpleOrange · August 25, 2023, 12:12pm

It’s been nearly two years since the last update to the script - in that time Bunpro has changed a fair bit so I expect it is safe to say it is not compatible with the current version.

Ambo100 · September 1, 2023, 12:29am

The user interface and website is changing at a fast pace but I will try to send out a patch when I have time. I am afraid I haven’t had much time to study recently but I would like to add an update soon.

Yuna2020 · September 1, 2023, 1:01am

Thank you so much! This is the one tool I used the most. It would be nice to have it back. ありがとうございます

Ambo100 · September 1, 2023, 1:27am

Update 1.5.21 (Hotfix)

Hotfix to tackle UI changes
Add PDF links will be fixed in the future

For now the fix should work so it is working but I will need to make style changes and fix certain things in the future to make it more adaptable to website updates.

Yuna2020 · September 2, 2023, 10:03am

本当にありがとうございました！

Ambo100 · September 6, 2023, 9:15pm

Update 1.6.0

Added button to open ChatGPT and copy a pre-made prompt to clipboard button (CAUTION: ChatGPT can be a helpful tool for language learning, but it’s important to remember that its responses may contain inaccuracies or lack context.)
Fixed Bunpro discussion links
Forced links to automatically reload when navigating through lessons using the page arrow

onepb · August 14, 2026, 5:26pm

Hi @Ambo100 . Thanks for all your work creating this script. However, as of August 2026, it doesn’t appear to be working. Are there plans to update the script?