Browser Sidebar Tool: 24H News Flash
This is the third small product I built with the help of OpenAI, and it has quickly become one of my favorite tools. I use it almost every day: **24H News Flash**.
Most of my daily work happens inside the Vivaldi browser. One of Vivaldi’s most useful features is the ability to add any website to the browser sidebar. This makes it possible to keep a compact information panel open while I continue working in the main browser window.
In practice, however, adding regular news websites to the sidebar does not usually create a good experience. Many news sites are not designed for a narrow sidebar layout. They often include too many ads, large navigation menus, unrelated recommendations, slow-loading scripts, and cluttered page sections. Some websites do not refresh content reliably, and some even push users toward their mobile apps.
What I wanted was much simpler: a clean, lightweight, always-available news panel that could stay in my browser sidebar all day.
That is why I built **24H News Flash**.
The idea is straightforward: show useful information in the smallest possible space. At the top, the panel displays live cryptocurrency prices and 24-hour percentage changes. Below that, it collects headlines from RSS feeds and presents them in a clean card-style interface. The design follows an Apple-inspired visual style, with soft cards, clear typography, and minimal distractions.
The tool supports custom RSS feed management, so you can add your preferred news sources and remove the ones you do not need. It also includes light mode, dark mode, and an automatic theme option, making it comfortable to use throughout the day. You can customize the panel title, adjust the news headline font size, choose how many items to show, and manage the crypto assets displayed at the top.
To reduce manual work, the panel refreshes news and market data automatically every 10 minutes. It also includes a manual refresh button for real-time updates whenever you need them. For people who spend long hours working in a browser and want to stay aware of both news and market changes, this small tool is extremely practical.
## Key Features
1. **Apple-inspired UI** — clean, elegant, and optimized for a narrow browser sidebar.
2. **Custom RSS feeds** — add, remove, and manage your preferred news sources.
3. **Adaptive theme modes** — light, dark, and automatic modes for all-day use.
4. **Live crypto prices** — display selected cryptocurrency prices and 24-hour changes at the top.
5. **Personalized settings** — customize the panel title, headline font size, item count, and top crypto assets.
6. **Auto and manual refresh** — refreshes automatically every 10 minutes, with instant manual refresh support.
7. **Lightweight deployment** — the entire tool can be deployed as a single JavaScript file on Cloudflare Workers.
If you like this product, you can download the JavaScript file and deploy it to Cloudflare Workers. If you are not sure how to deploy it, you can ask ChatGPT / OpenAI for help or contact me directly.
24H News Flash
This is another UI style I created for my browser sidebar news tool. It keeps the same lightweight and practical approach, but uses a more Apple-inspired card layout that feels cleaner and more comfortable for long-term daily use.
