Memolight by memolight
Manage local notes, colors, and side labels on supported sites and custom sites.
Available on Firefox for Android™Available on Firefox for Android™
Scan the QR code to open this extension in Firefox for Android
Extension Metadata
About this extension
Memolight is a Chrome extension for keeping personal context about usernames, authors, and text you encounter on the web.
On built-in supported sites, Memolight shows markers next to detected usernames and authors. On other domains, text markers work only after you explicitly add the domain and grant access. You can also select text on a page and save it as a phrase memo from Chrome’s context menu.
Click a marker to save a note, short label, and color. Hover over a saved marker to quickly preview its content. For newly created memos, Memolight also stores a sanitized source URL, page title, and short surrounding text snippet so you can understand the original context and reopen the source later.
On the management page, you can search, filter, sort, edit, and delete saved notes, view their source context, export readable CSV files, and export or import encrypted backups.
Key features
- Show note markers next to usernames and authors on supported sites
- Show text markers on domains you explicitly add and allow
- Save selected page text as a phrase memo from the context menu
- Preview saved notes on hover
- Save short labels, colors, and detailed notes
- Save and reopen the source page for newly created memos
- Search, filter, sort, edit, and delete saved notes
- Turn markers on or off per site or domain
- Configure and test site-level and phrase-level selector scopes
- Export notes and source context to CSV
- Export and import AES-GCM encrypted backups
- Dark mode support
Privacy
- Notes, labels, colors, saved text, detected identifiers, source context, and settings are stored in Chrome’s local extension storage on your device.
- Source context may include a sanitized page URL, page title, and short surrounding text snippet for a memo you choose to create.
- Memolight does not transmit stored memo data to the developer or third-party servers.
- Memolight does not use user data for analytics, advertising, tracking, or sale.
- Memolight does not collect your general browsing history. Source context is saved only when you create a memo.
- There is no account or cloud synchronization.
- Access to custom domains is requested only for domains you explicitly add.
- CSV files are not encrypted, so please store them carefully.
- Backup files are encrypted with AES-GCM using the password you provide.
Why permissions are needed
- Storage: Saves notes, source context, and extension settings locally.
- Site access: Detects matching usernames or text and displays markers on supported or user-approved domains.
- Scripting: Enables text markers on domains explicitly added by the user.
- Context menus: Saves text selected by the user as a phrase memo after an explicit context-menu action.
On built-in supported sites, Memolight shows markers next to detected usernames and authors. On other domains, text markers work only after you explicitly add the domain and grant access. You can also select text on a page and save it as a phrase memo from Chrome’s context menu.
Click a marker to save a note, short label, and color. Hover over a saved marker to quickly preview its content. For newly created memos, Memolight also stores a sanitized source URL, page title, and short surrounding text snippet so you can understand the original context and reopen the source later.
On the management page, you can search, filter, sort, edit, and delete saved notes, view their source context, export readable CSV files, and export or import encrypted backups.
Key features
- Show note markers next to usernames and authors on supported sites
- Show text markers on domains you explicitly add and allow
- Save selected page text as a phrase memo from the context menu
- Preview saved notes on hover
- Save short labels, colors, and detailed notes
- Save and reopen the source page for newly created memos
- Search, filter, sort, edit, and delete saved notes
- Turn markers on or off per site or domain
- Configure and test site-level and phrase-level selector scopes
- Export notes and source context to CSV
- Export and import AES-GCM encrypted backups
- Dark mode support
Privacy
- Notes, labels, colors, saved text, detected identifiers, source context, and settings are stored in Chrome’s local extension storage on your device.
- Source context may include a sanitized page URL, page title, and short surrounding text snippet for a memo you choose to create.
- Memolight does not transmit stored memo data to the developer or third-party servers.
- Memolight does not use user data for analytics, advertising, tracking, or sale.
- Memolight does not collect your general browsing history. Source context is saved only when you create a memo.
- There is no account or cloud synchronization.
- Access to custom domains is requested only for domains you explicitly add.
- CSV files are not encrypted, so please store them carefully.
- Backup files are encrypted with AES-GCM using the password you provide.
Why permissions are needed
- Storage: Saves notes, source context, and extension settings locally.
- Site access: Detects matching usernames or text and displays markers on supported or user-approved domains.
- Scripting: Enables text markers on domains explicitly added by the user.
- Context menus: Saves text selected by the user as a phrase memo after an explicit context-menu action.
Rated 0 by 0 reviewers
Permissions and data
Required permissions:
- Access your data for sites in the dvdprime.com domain
- Access your data for sites in the bobaedream.co.kr domain
- Access your data for sites in the slickdeals.net domain
- Access your data for sites in the mobile01.com domain
- Access your data for sites in the reddit.com domain
- Access your data for sites in the threads.net domain
- Access your data for sites in the threads.com domain
- Access your data for sites in the x.com domain
- Access your data for sites in the twitter.com domain
- Access your data for dvdprime.com
- Access your data for www.bobaedream.co.kr
- Access your data for m.bobaedream.co.kr
- Access your data for mlbpark.donga.com
- Access your data for www.inven.co.kr
- Access your data for m.inven.co.kr
- Access your data for b.hatena.ne.jp
- Access your data for news.ycombinator.com
- Access your data for bsky.app
- Access your data for slickdeals.net
- Access your data for mobile01.com
- Access your data for reddit.com
- Access your data for threads.net
- Access your data for threads.com
- Access your data for x.com
- Access your data for twitter.com
Optional permissions:
- Access your data for sites in the dvdprime.com domain
- Access your data for sites in the bobaedream.co.kr domain
- Access your data for sites in the slickdeals.net domain
- Access your data for sites in the mobile01.com domain
- Access your data for sites in the reddit.com domain
- Access your data for sites in the threads.net domain
- Access your data for sites in the threads.com domain
- Access your data for sites in the x.com domain
- Access your data for sites in the twitter.com domain
- Access your data for dvdprime.com
- Access your data for www.bobaedream.co.kr
- Access your data for m.bobaedream.co.kr
- Access your data for mlbpark.donga.com
- Access your data for www.inven.co.kr
- Access your data for m.inven.co.kr
- Access your data for b.hatena.ne.jp
- Access your data for news.ycombinator.com
- Access your data for bsky.app
- Access your data for slickdeals.net
- Access your data for mobile01.com
- Access your data for reddit.com
- Access your data for threads.net
- Access your data for threads.com
- Access your data for x.com
- Access your data for twitter.com
Data collection:
- The developer says this extension doesn't require data collection.
More information
- Add-on Links
- Version
- 1.1.0
- Size
- 186.19 KB
- Last updated
- 12 hours ago (Jul 9, 2026)
- Related Categories
- License
- All Rights Reserved
- Privacy Policy
- Read the privacy policy for this add-on
- Version History
- Add to collection
The developer of this extension asks that you help support its continued development by making a small contribution.
The extension uses built-in content scripts for supported community sites and requests optional host permissions only when the user adds a custom site.
The Firefox build is generated from the included source code with:
npm ci
npm run build:firefox
The output directory is dist-firefox/.