Njump is a free, open-source static gateway for Nostr, built for people who want to share Nostr content with readers who are not on the network yet. It takes notes, profiles and relays and renders them as plain HTML pages with previews, so a link can be read in any ordinary web browser. It sits in the Nostr and decentralized social category and suits anyone who posts on Nostr and needs a clean link to send elsewhere.
The core idea is simple. Instead of asking a friend to install a full app just to read one post, you send a gateway page, they see what the note says, and they can continue in the client they already use. The project is written in Go with some JavaScript and TypeScript, and its latest release is v0.3.0. The code has been updated recently, so it is an active project, but it is worth testing before you rely on it for anything important.
What Is a Nostr Static Gateway?
Nostr is an open protocol where users publish signed notes and identities are tied to cryptographic keys. Content is sent to relays, which store and pass it along, and any app that understands the format can read it. That openness is a strength, but it also means most people cannot open a Nostr link unless they already have a compatible client installed.
A gateway solves that gap. It reads Nostr data and serves it as normal web pages. The word static means the output is plain HTML rather than a live app that the visitor has to run. A gateway page therefore behaves like any other link: it opens, it displays text and images, and it can be pasted into an email, a forum post or a group chat.
Who Is Njump For?
Njump is most useful to people who already write or read on Nostr and regularly want to show something to people outside it. A writer might quote a note in a blog post. A community organizer might share a profile page in a message to members who have never heard of Nostr. Both want a link that works on the first click, without asking the recipient to set anything up.
Developers form a second group. Because the source code is public and the project lists Docker as a platform, a technically inclined user can host an instance for a small group, a company channel or a personal archive. The tool is simple enough that running it does not require a large operation behind it.
Practical Scenarios for Sharing Nostr Content
Consider a few concrete cases. A journalist finds a relay operator's note that explains a network change, and wants to cite it in an article. A gateway link lets the editor and readers check the original text without installing anything. Similarly, a hobbyist who posts photos on Nostr can send a note link to a relative who only uses email.
Before you post anything, you can also use the preview as a quick check. Seeing a note rendered as a standalone page shows you how it will look to someone who lands on it cold, which is a useful test of wording and context. These are modest uses, but they are the everyday tasks the tool is built for.
Key features
Static HTML previews
Profiles, notes and relays
Hand-off to your preferred client
A workaround for the nostr: link scheme
Open source with Docker support
Supported coins
Njump works with the Nostr network and nothing else. It displays Nostr profiles, notes and relays, so there is no list of coins, wallets or blockchain networks to choose from. It is a viewing and sharing tool, which makes it a companion to a Nostr client rather than a place to manage funds.
How to install Njump on Windows
- 1
Check the latest release
Open the project's GitHub Releases page and look for the current version, which is v0.3.0 at the time of writing. The project lists Windows among its build targets, but confirm that a Windows file is attached to the release before you download anything.
- 2
Download from the official source
Download only from the official website or the project's GitHub Releases page. Avoid mirrors, file-sharing sites and links sent to you by strangers, since a modified file can look identical to the real one.
- 3
Verify the file
If the release publishes a SHA-256 checksum, compare it with the downloaded file before running it. In PowerShell, the Get-FileHash command shows the hash of a file. If the values do not match, delete the file and download it again from the official page.
-
Run or deploy the gateway
Run the program on your Windows machine by following the instructions in the repository documentation. If you prefer containers, Docker is a listed platform, so you can host your own instance on a server. Either way, the gateway address you share can then point to your own copy.
How to use Njump
Using Njump takes only a few minutes once a gateway is running. The steps are the same whether you use a local copy on your own computer or an instance hosted on a server you manage.
- Copy the identifier of the note, profile or relay you want to share from your Nostr client.
- Open the gateway address in your browser and enter that identifier in the appropriate place.
- Review the preview page. It shows the content as HTML, so you can confirm the text, images and author look right.
- Send the gateway URL to your reader through email, chat or a blog post.
- If the reader wants to interact, they can follow the link back to the item in a Nostr client of their choice.
A good habit is to open the final link in a private browser window before sending it. That shows you exactly what a new visitor sees, without your own session or preferences affecting the result.
Pros & cons
- Free and open source, with the code available on GitHub
- Turns Nostr notes, profiles and relays into readable web pages
- Lets people outside Nostr see shared content without installing a client
- Works around the limits of the nostr: link scheme in ordinary browsers
- Can be hosted privately with Docker for a small group or team
- Windows support is listed as likely rather than confirmed, so check the releases before installing
- It is a viewer and previewer, not a full client for posting or messaging
- Its usefulness depends on the Nostr network and its relays being reachable
- The 0.x version number suggests the project is still evolving, so features may change
Is Njump safe?
Njump is a read-oriented gateway, so it does not ask you to manage money, but the same download habits apply. Get the program only from the official website or the project's GitHub Releases page. Where a SHA-256 checksum is published, compare it with your file before you run anything. The project has seen a recent code update, which is a good sign, but you should still check the latest version on the official website before installing. Never enter a seed phrase, private key or account password on a third-party site that claims to be a Nostr gateway, because no legitimate preview tool needs them.
- Official source only. Download from github.com/fiatjaf/njump. Ignore ads and lookalike domains.
- Check the SHA-256. Compare the installer hash with the value the developer publishes before running it.
- Never share your seed phrase. No developer, support agent or website — including CryptApps — will ever ask for it.
Alternatives
Most Nostr software on this site is built for people who use the network directly. Amethyst and Gossip are full clients for reading and posting, Vega is a desktop client, and NAK and Nostr Commander RS are command-line tools. Njump is different. It does not replace any of these. Instead, it turns a single piece of Nostr content into a page that someone off the network can open. If you want to publish or follow accounts, pick a client. If you want to send a link to someone who will never install one, Njump is the tool to add to your workflow.
Specifications
- Price
- Free
- Type
- Open source
- License
- —
- Latest version
- v0.3.0
- Last update
- 14 Oct 2026
- Windows support
- Likely (builds for Windows; check releases)
- Source code
- github.com/fiatjaf/njump
Frequently asked questions
Yes, Njump is free, and the project is open source. Its code is published on GitHub, where you can read it or build it yourself. There is no purchase step in the basic setup. Check the repository for licensing details if you plan to reuse the code in another project.
Njump is likely to work on Windows because the project builds for Windows, though its listed platform is Docker. Look for a Windows file on the GitHub Releases page for version v0.3.0. If no Windows file is attached, running the gateway through Docker is the other route, and it works on Windows machines that support containers.
Njump is an open-source tool that displays public Nostr content, and the safest approach is to use the official version only. Download it from the official website or GitHub, verify the SHA-256 checksum when one is published, and keep your files from unknown sources out of your system. Never enter a seed phrase or private key into a third-party site.
Njump is used to share Nostr notes, profiles and relays with people who do not use Nostr. It turns each item into a standard web page with a preview. That makes it easy to paste a link into an email, a blog or a chat message, where the recipient can read the content without installing anything.
No, Njump is built for browsing and previewing, not for posting. To publish a note, use a full Nostr client, then share the Njump link with people who are not on Nostr. The two tools cover different steps of the same workflow.
The nostr: prefix is a link scheme that asks a Nostr app to open an item directly. Many browsers and websites do not handle it yet, so the link often fails outside Nostr-aware software. A gateway address solves that problem by turning the same item into an ordinary web page that opens anywhere.
Verdict
Njump is a narrow, useful tool for a specific job. If you use Nostr and often need to show a note or profile to someone outside the network, it saves time and removes a setup step for your reader. It is not a place to post, chat or manage funds, so pair it with a client you already like. Treat it as a bridge between the Nostr world and the regular web, and you will get the most from it.