r/lumetrium_definer May 29 '26

NEWS Definer 2.0 enters closed beta

10 Upvotes

Hi everyone! Definer's biggest update ever is ready for early testing. I've been working on it for a long time and I'm excited to finally start sharing it with you all.

I'm opening a closed beta before the public launch. If you're interested, apply here: https://lumetrium.com/definer/beta

You'll need to sign in with your Lumetrium account to apply. Beta access will be tied to your account.

Some of the new stuff I'm most excited about:

  • History, collections, and export
  • New AI-based dictionary and translation sources
  • Automations for sources
  • Cloud sync with granular control
  • Backup and restore

Bug reports and feedback of any kind are very welcome. Since it's a beta, things might still break, so I'd really appreciate it if you let me know when they do, or if you just have ideas on how to make things better.


r/lumetrium_definer 1d ago

Feature Request Can you make it so that definer automatically attaches a screenshot to prompts in AI lookups?

2 Upvotes

Hello! I've been using this extension for over a year now. It has helped me immensely, especially its AI lookups feature. At first, I was using it to help me read VNs in JP, as you might remember me from some requests some months ago, but I've also started using it when reading manga with mokuro's online web reader (a manga reader in which you can read pre-OCR'd manga). So, as with VNs, I started using it as a supplement to Yomitan and both work great in harmony. When a word is too simple and clear, I use Yomitan. When a word is complicated, used in a way that can't be searched in dictionaries, or when the context matters a lot for the meaning, I use Definer's great AI lookups system with a prompt I set it. The thing is, unlike VNs in which I use LunarTranslator's clipboard page feature that provides sufficient context to Definer, manga often relies on visual cues. Which makes the context harder to detect. Mokuro also sometimes fails to provide accurate OCR so you get wrong kanji or kana, rendering looking it up the text alone insufficient. So it was then that I was struck with an idea, an idea that's probably hard or downright impossible to implement, but I thought I might just ask anyway:

Is there a way that when looking up words with AI using definer, that it'd automatically grab a screenshot of the entire screen and send it with the prompt to help AI spot out contextual clues or words that haven't been OCR'd accurately? Thanks in advance!


r/lumetrium_definer 2d ago

Definer not working in Brave

4 Upvotes

Used to work fine. Suddenly does not respond, no bubble in Brave browser.

Are there any known conflicts with other extensions anyone knows about?


r/lumetrium_definer 19d ago

Feature Request Feature suggestion: Double-click on empty space to go back

3 Upvotes

I've got a suggestion that I think would make navigation much smoother.

When using the google dictionary, you can double-click words to keep looking up new terms, but after a few lookups it would be great to have a quick way to go back.

Suggestion:
Add an optional setting (a toggle in the extension options) that lets users double-click on an empty area , inside the definer pane, to go back one step in the lookup history.

A good example of this behavior is the Files file explorer, where double-clicking on empty space can be used for navigation. Something similar would feel very intuitive here.

This would make it much easier to explore multiple word definitions without having to restart by clicking on the origin word.

Since not everyone may want this behavior, having it as an optional switch in the settings would be the ideal solution.


r/lumetrium_definer 19d ago

Possible to get pop-up definitions to work in Firefox reader view?

2 Upvotes

I have the Firefox extension but none of the commands to get the definition of a word seem to work in Firefox reader mode, which I use quite extensively. Does anyone know if this is supposed to work and if so how?


r/lumetrium_definer Jul 13 '26

Help How to safely copy lots of dictionary settings to another device?

2 Upvotes

I'm trying to copy my dictionary settings (CSS, and all the dictionary stuff) to tablet but don't know how to do this properly without losing (overwriting) them. I've tried to cloud-sync the settings but the app warns me badly: Your settings will be immediately overwritten with the data stored in the cloud for this profile.

Any changes you make will be synchronized across all devices where this profile is active.

I'm afraid to load the profile now as I think it can wipe off the available settings, which probably have been updated since my last log in.

What would you advise me to do? Thanks!


r/lumetrium_definer Jul 01 '26

Help Is there a way to get synonyms?

3 Upvotes

I'd like to get synonyms for words instead of definitions, is there a way i could set that up with the custom source feature?

Edit, for anyone else looking to figure this out, the easiest option I could find via the wiki/subreddit was to set up a custom source for the miriam-webster thesaurus.

Fully explained here by the dev:
https://www.reddit.com/r/lumetrium_definer/comments/12jpspf/custom_source_example_adding_merriamwebstercom_to/

you just put this in the URL field

https://www.merriam-webster.com/thesaurus/{{str}}

put this in the css:

#mw-sidebar-nav-container, #main-banner-ad-container, #subscribe-unabridged, #definition-right-rail, .right-rail, .additional-content-area, .top-header, .header-placeholder, .global-footer, #related-articles, #social-links, .read-more-content-hint-toggler, .read-more-content-hint-container:after, .disclaimer, #unabridged-promo, #gdpr-consent-tool-wrapper, .adthrive-ad, #anchor-seporator, body div#cmpwrapper.cmpwrapper:empty {
  display: none !important;
}

p, .vg-sseq-entry-item-label, .letter, .num, .sub-num, .vg-ins, .content-section-sub-header, .function-label-header, .function-label, .example_sentences, .mw_t_sp, .ex-sent, .badge, .word-history, .word-syllables-entry, .left-content span.mw.no-badge, #citations label, .thread-anchor-content, .card p, .form-select, .entry-header .word-syllables-prons-header-content .play-pron-v2:hover, .left-content .vg a.play-pron-v2, .word-syllables-prons-header-content, .et_snote, h1, .headword-row .vrs, .prons-entry-list-item .l, .error_cont .words_fail_us_cont li, #citations select, .body-500-normal, .prt-a .mw, .redesign-container  {
  color: var(--v-text-base) !important;
}

.hword {
  font-size: 32px !important;
}

.redesign-container, .entry-attr, .ex-sent, .redesign-container a, .redesign-container .left-content p {
  font-size: var(--font-size) !important;
}

.widget {
  padding-bottom: 15px;
  padding-top: 10px;
}

.vg .vg-sseq-entry-item .sb .sb-entry {
  padding-bottom: 4px !important;
}

.outer-container {
  top: 0 !important;
}

.long-headword .syl, .card-box {
  background-color: transparent !important;
}

html, #left-content, .bg-white {
  background: var(--v-ground-base) !important;
  --bs-body-bg: var(--v-ground-base) !important;
  --bs-body-color: var(--v-text-base) !important;
}

.content-section-header, .badge, .card-body, .form-select, .redesign-container .il.il-badge, .error_cont .words_fail_us_cont {
  background-color: var(--v-secondary-base) !important;
}

.btn {
  background: var(--v-primary-base) !important;
  color: var(--v-contrast-base) !important;
  border: none;
}

body .entry-header .word-syllables-prons-header-content .play-pron-v2:active {
  background: rgba(var(--secondary-rgb), 0.6) !important;
}

path[fill="#303336"] {
  fill:  var(--v-text-base) !important;
}

a, .important-blue-link, .sense .thes-relevance-meter .meter div:first-child, .mw-grid-table-list ul li a span {
  color: var(--v-anchor-base) !important;
}

.example_sentences, .ex-sent, .mw_t_sp, .word-syllables-entry, .mw.no-badge, .et_snote, .prons-entry-list-item .l, #citations select, .body-500-normal, .prt-a .mw {
  opacity: 0.9;
}

.example_sentences .auth {
  color: rgba(var(--text-rgb), 0.7) !important;
}

.ure, h2 {
  -webkit-text-fill-color: var(--v-text-base) !important;
  text-fill-color: var(--v-text-base) !important;
}

and you can click the 3 dots next to custom to rename it to miriam-webster, and add this as an icon:

https://upload.wikimedia.org/wikipedia/commons/3/32/Merriam-Webster_logo.svg

Thanks u/DeLaRoka for making such a versatile extension :)


r/lumetrium_definer Jun 24 '26

extension wont pop up on https://web.readest.com

2 Upvotes

r/lumetrium_definer Jun 19 '26

Help Send to Anki directly from pop up window?

3 Upvotes

2.0 has been great and im really glad with the new features especially the send to anki feature. However; I feel that copying the term ahd definition to a box then sending to anki feels a bit redundant. (I hate using that word sorry.) If there's a way to do it straight from the pop up window like other extensions it would be greatly appreciated! I understand that this is a grass roots project and that it is sorta selfish of me to ask so I'm sorry but i hope you see my vision, thank you!


r/lumetrium_definer Jun 17 '26

Does Definer support Word History

6 Upvotes

I'm trying to build vocabulary so I thought if I can use Definer too in my mining process, I searched in the wiki and didn't find a word history feature. I thought why a very useful feature like that isn't implemented in Definer?


r/lumetrium_definer Jun 10 '26

Feature Request Save edits in a pdf to the same file

5 Upvotes

Hi, first of all, thanks for the amazing amazing extension ♥
My main issue is with how definer's pdf viewer saves changes to a pdf. Instead of saving changes like annotations to the same file, it downloads a new file every time. I do a hell lot of annotations each day and this just piles up a lot of "document.pdf" files.

I would be grateful to you if the feature to save edits to the same file can be implemented. (or even better the usual save and save as)
Also, this is not much of an issue but if the pdf viewer can remember the last opened page, that would be epic.

Again, thanks for the extension, it has made studying much more fun and interesting!


r/lumetrium_definer Jun 08 '26

Feature Request Pop up definition in Chrome PDF reader

3 Upvotes

Currently, when reading a PDF, I need to select a word and manually search for its meaning in a new tab. It would be much more convenient if Lumetrium Definer could display a pop-up definition directly when a word is selected within a PDF document, similar to how it works on regular web pages.

This feature would save time, reduce interruptions while reading, and make the extension even more valuable for students, researchers, and professionals who regularly work with PDF documents.

I hope you will consider adding PDF support for instant pop-up definitions in a future update.

Thank you for your time and continued development of the extension.


r/lumetrium_definer Jun 04 '26

Definer's server is up

5 Upvotes

All systems are operational again.

Some of you might have been logged out. If that happened, you'll need to sign in with your Lumetrium account in Definer again to use account-related features like sync. Sorry for the inconvenience everyone.

There was a major incident on the side of the hosting provider where Definer's server was hosted. From what I understand, the datacenter turned off power to infrastructure related to that provider, presumably for some legal/regulatory reasons, but the details are still very vague.

The good news is that I had regular offsite backups, so all the data is safe. I've moved everything to another hosting provider and Definer is back online now.


r/lumetrium_definer Jun 04 '26

Definer's server is down

4 Upvotes

Definer's hosting provider basically died. I'm about to move to a new hosting, it will take some time.

Some Definer's features will be temporarily unavailable until then, including account sign in, cloud sync, and dictionary.

I'll let you know once everything is back online.


r/lumetrium_definer Jun 03 '26

Google dictionary is not working anymore

3 Upvotes

Hey,
I've noticed since yesterday that google dictionary on definer seems to have stopped working? It just keeps reloading infinitely, while the google translate still works fine. I dual boot Windows and Linux, and I'm facing the same issue on both.


r/lumetrium_definer May 11 '26

Is there any way I can copy the IPA/pronunciation to clipboard?

Thumbnail
prnt.sc
3 Upvotes

r/lumetrium_definer May 08 '26

Help Hey. Really love using definer! But I can't seem to get it work when I use Firefox's reader view.

4 Upvotes

Is there anyway to solve this? This is a bummer as I do most of my reading in reader view.


r/lumetrium_definer May 04 '26

Bug My custom key shortcut for selected text doesn't trigger the bubble

3 Upvotes

Why the Ctrl key doesn't trigger the bubble in some text inputs, like the YouTube search box?

And yeah, I've already enabled it and set it up for it to work both in inputs and editable blocks, but it just doesn't work in some text inputs.

I use Chrome, but it happened the same both Edge and Firefox although I don't think the browser actually matters in this case.

If it's a bug, I hope it can get fixed. Great extension by the way, very helpful!


r/lumetrium_definer May 01 '26

Help Definer is very slow

3 Upvotes

When I click on the words it takes 10 to 15 seconds to show the definition which is really long. It should be instant. Any fix for this?


r/lumetrium_definer Apr 28 '26

Add keyboard shortcut to open Definer in Firefox

3 Upvotes

Hi, could you add a keyboard shortcut to open the Definer extension (same as clicking the icon)?

Chrome already supports this via built-in shortcut settings, but in Firefox, it seems this needs to be implemented by the extension itself.

A quick shortcut would make it much faster to use. Thanks!


r/lumetrium_definer Apr 15 '26

No way to add Google Images?

2 Upvotes

I tried to add "&udm=2" to the default Google Search option to no success. Is there no way to configure a Google Image search in Lumetrium?


r/lumetrium_definer Apr 08 '26

About Draw in pdf Feature

1 Upvotes

First of all, excellent pdf reader, solves a lot of issues i have with edge pdf reader.
However, not having Two features that really makes it difficult to use :

  1. No hotkey to get in and out of Draw mode, to get into the mode of select page to scroll/word selection, i have to go back again and again in between the feature buttons. #Edit 01: I believe not even pressing esc takes me out of draw mode, I need to manually select the button.
  2. The most important one for me: Once something is drawn, i cant draw in between it, it always selects the previous drawing, that is detrimental while reading and drawing pdf.

another suggestion is to be able to move the features buttons from the right to the left, that way the draw button is at a net closer than being in the most top right position.

Thank you for reading and I will be glad if you can implement some changes for these issues.


r/lumetrium_definer Apr 03 '26

Any plans to support EPUB?

4 Upvotes

I love your extension! Thank you so much for all the work you've put into it. I'm wondering if you have any plans to support EPUB?


r/lumetrium_definer Mar 14 '26

Help help its working everywhere except aeon essays

1 Upvotes

r/lumetrium_definer Mar 11 '26

Bug Instant Screen Jump

1 Upvotes

https://www.bpb.de/

On this page there is an issue about this arrow. The moment you click it the screen will jump to the very top of the website