Letterboxd Extras Firefox

Letterboxd Extras

Display ratings from other film sites (and many other nifty extras) directly on Letterboxd, fully customizable.
Letterboxd ExtrasLetterboxd ExtrasLetterboxd ExtrasLetterboxd ExtrasLetterboxd ExtrasLetterboxd Extras
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Features & Capabilities

Letterboxd Extras enhances the Letterboxd experience by surfacing external film ratings (IMDb, Rotten Tomatoes, Metacritic, MyAnimeList, AniList, CinemaScore) directly on their pages. It also brings top rankings, budget and box office data, and a range of handy extras to customize how you track films.

Other features include a Wikipedia-style info box on people pages, display of content ratings from multiple boards, hover details like wide release date and duration, quick links to related sites, and an option to filter lost films. The project is open source on GitHub, with issues for bugs and suggestions.

User Growth & Download Statistics

Manifest V2 Add-on Entertainment Open Source Content
By:
Duncan Lang
Daily users:
1,616 -5
Rating:
4.77
(31)
Version:
3.19.2 Last updated: 2026-05-25
Version code:
6276450
Creation date:
2021-09-16
Risk:
Moderate risk impact Moderate risk likelihood
Permissions:
  • https://letterboxd.com/*
  • https://*.imdb.com/*
  • https://www.rottentomatoes.com/*
  • https://www.boxofficemojo.com/*
  • https://webapp.cinemascore.com/*
  • https://query.wikidata.org/*
  • https://www.metacritic.com/*
  • https://api.jikan.moe/*
  • https://graphql.anilist.co/*
  • storage
    • See more
Content scripts matches:
  • letterboxd.com
Size:
316.18KB
Email:
du*****@gmail.com
URLs:
Website
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-06-19
Compare stats and ranking:

Ranking

# 2,488 ▼ 8
Other rankings
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Other platforms

Chrome
Letterboxd Extras (v3.19.2)
10,000 4.78 (58)

For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
Duncan Lang
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/letterboxd-extras/
Email:
du*****@gmail.com
Website:
https://github.com/duncanlang/Letterboxd-Extras

Permission Change History

2026-05-14: Version 3.18.6 → 3.19.0
Add Optional permissions: https://markuapi.kabk.dev/*
Remove Optional permissions: https://*.theyshootpictures.com/* https://www.bfi.org.uk/* https://markuapi.apn.leapcell.app/* tabs
2026-03-10: Version 3.18.1 → 3.18.2
Add Optional permissions: https://*.theyshootpictures.com/*
Remove Optional permissions: https://www.theyshootpictures.com/*
2026-02-20: Version 3.17.0 → 3.18.0
Add Optional permissions: https://api.douban.com/* https://api.mydramalist.com/*
2025-10-19: Version 3.16.1 → 3.17.0
Add Optional permissions: https://www.doesthedogdie.com/* https://markuapi.apn.leapcell.app/* https://kinopoiskapiunofficial.tech/api/*
2025-05-03: Version 3.15.4 → 3.15.5
Add Optional permissions: tabs
2024-08-30: Version 3.14.1 → 3.15.1
Add Permissions: scripting
Add Optional permissions: https://www.google.com/search*
2024-06-30: Version 3.13.0 → 3.14.0
Add Optional permissions: https://www.allocine.fr/* https://api.simkl.com/*
2024-05-26: Version 3.12.2 → 3.13.0
Add Optional permissions: https://www.theyshootpictures.com/* https://www.bfi.org.uk/*
2023-10-16: Version 3.8.2 → 3.9.0
Remove Permissions: https://www.omdbapi.com/* https://apollo.senscritique.com/* https://api.mubi.com/*
Add Optional permissions: https://apollo.senscritique.com/* https://api.mubi.com/* https://*.filmaffinity.com/*
2023-08-21: Version 3.7.0 → 3.8.0
Add Permissions: https://webapp.cinemascore.com/* https://api.mubi.com/*
Remove Permissions: https://api.cinemascore.com/*
2023-07-10: Version 3.6.5 → 3.7.0
Add Permissions: https://*.imdb.com/*
Remove Permissions: https://www.imdb.com/*
2022-11-14: Version 3.5.6 → 3.6.0
Add Permissions: https://apollo.senscritique.com/*

User Reviews

User reviews overwhelmingly praise Letterboxd Extras as a strong, highly useful add-on that improves the Letterboxd experience. Its lauded for its polished UI, usefulness, and reliability, with several reviewers noting it makes Letterboxd feel more powerful and better organized. A few enhancement requests appear, including displaying IMDb vote counts, a random picker for watchlists, showing friends' average ratings, Rotten Tomatoes hover info, and Rate Your Music integration. Overall, the addon is considered essential and worth recommending.
Pros
  • Very positive reception with praise for being an awesome/fantastic add-on and highly recommended.
  • Looks nice along with Letterboxd's UI.
  • Very useful and works great; described as solid and highly recommended.
  • Improves search/refinement by letting users show only film results.
Cons
Recent reviews
by Po*****, 2026-05-14
by Mi*****, 2026-03-18
by Fi*****, 2026-02-22
View all user reviews ›

Is Letterboxd Extras Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Letterboxd Extras requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • High Injects scripts into web pages, which may alter or extract site contents, resulting in a substantial risk.
  • High ******* ****** ** *** ********* ******** *************** ********* ******************* ****************** **************** ************* *************** ********** **********
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Letterboxd Extras is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details
  • High This extension was recently updated in the past month. New updates may not be stable or safe.
  • High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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