FediProfile - The Decentralized Link-in-Bio

Your links, badges, and identity - powered by the Fediverse.
The open-source, federated alternative to Linktree.

What is FediProfile?

FediProfile is a free, privacy-respecting link-in-bio tool built on ActivityPub. Your profile page is itself a first-class Fediverse actor — people on Mastodon, Pleroma, Misskey, and any other ActivityPub platform can discover and interact with it directly.

It's designed for two audiences:

Newcomers — A clean, fast link-in-bio with no trackers, no ads, and no account lock-in. It also serves as a gateway into the Fediverse: your profile link is an ActivityPub actor, encouraging exploration of open platforms.

Fediverse power users — If you juggle multiple accounts (Mastodon, Pixelfed, Loops, a federated blog…), FediProfile gives you a single persona to share. It doesn't post on its own, but it automatically boosts content from your other accounts and has its own ActivityPub inbox — including the ability to receive and display verifiable badges issued through BadgeFed.

Features

• Unlimited Links — Add as many links as you want, organize them your way.
• ActivityPub Native — Your profile is discoverable and followable from any Fediverse instance.
• Badge Collection — Receive and showcase verifiable badges from issuers across the Fediverse via BadgeFed.
• Login with Mastodon — No new password required. Authenticate with your existing Mastodon account from any instance.
• Auto-Boost & Relay — Consolidate your Fediverse presence by automatically boosting posts from your other accounts.
• Self-Hostable — Run your own instance with full control over your data.
• No Tracking — Zero analytics sold, zero ads, zero corporate surveillance.

How It Works

1. Sign in with Mastodon — Enter your instance domain and authorize FediProfile.
2. Pick your username — Choose a short, memorable slug. Your profile goes live instantly.
3. Add links & badges — Drop in your links. Badges arrive automatically from issuers across the Fediverse.

Getting Started

Choose one of the following ways to start FediProfile.

If you want admin access, set these environment variables before starting the app:

export AdminAuthentication__MastodonUser=mapache
export AdminAuthentication__MastodonDomain=hachyderm.io

After signing in with that Mastodon account, the hidden admin page is available at /admin/root.

Run a Precompiled .NET Build

Use this if you want to run FediProfile without building from source.

Prerequisites:

• A Mastodon account (on any instance) for authentication

Download the latest Windows or Linux release from:

https://github.com/tryvocalcat/fediprofile/releases/

Then extract the archive and run the app.

Windows:

Expand-Archive .\fediprofile-windows.zip .\fediprofile-windows
cd .\fediprofile-windows
.\FediProfile.exe

Linux:

tar -xzf fediprofile-linux.tar.gz
cd fediprofile-linux
chmod +x ./FediProfile
./FediProfile

The precompiled app listens on http://localhost:5000 by default unless you set ASPNETCORE_URLS.

Clone, Build, and Run from Source

Use this if you want to develop locally or build the app yourself.

Prerequisites:

• .NET 9.0 SDK
• A Mastodon account (on any instance) for authentication

git clone https://github.com/tryvocalcat/fediprofile.git
cd fediprofile/src/FediProfile
dotnet run

When started with dotnet run, the app uses http://localhost:5099 by default.

Run with Docker

Use this if you want an isolated deployment with persistent data and generated profile files.

Prerequisites:

• Docker
• A local appsettings.json file based on src/FediProfile/appsettings.json.example

docker run -d -p 8080:8080 --name fediprofile \
  -v $(pwd)/fediprofile/data:/app/App_Data \
  -v $(pwd)/fediprofile/appsettings.json:/app/appsettings.json \
  -v $(pwd)/fediprofile/uploads:/app/wwwroot/uploads \
  -e DB_DATA="/app/data" \
  -e ASPNETCORE_URLS="http://+:8080" \
  ghcr.io/tryvocalcat/fediprofile:latest

This publishes FediProfile at http://localhost:8080, stores SQLite databases under /app/data, and persists generated profile pages under /app/wwwroot/profiles.

Configuration

Edit appsettings.json to configure your instance:

{
  "AdminAuthentication": {
    "MastodonUser": "your-mastodon-username",
    "MastodonDomain": "your-instance.social"
  },
  "Domains": ["localhost", "localhost:5099"],
  "DomainConfig": {
    "localhost": {
      "SingleUserInstance": false
    }
  },
  "SingleUserInstance": false,
  "RegistrationOpen": true,
  "InvitationCode": "",
  "Authentication": {
    "LinkedIn": {
      "ClientId": "",
      "ClientSecret": "",
      "UseProfileBasicInfo": false
    }
  }
}

Key	Description
AdminAuthentication	Mastodon account that has admin access to the instance
Domains	Domains this instance will respond to
DomainConfig.{domain}.SingleUserInstance	Optional per-domain override; falls back to the root-level SingleUserInstance value
SingleUserInstance	Default for all domains. If omitted it is treated as false
RegistrationOpen	Set to true to allow new sign-ups
InvitationCode	Optional invite code required for registration
Authentication.LinkedIn.UseProfileBasicInfo	Enable r_profile_basicinfo and the identityMe fetch only after LinkedIn has approved that scope

Self-Hosting in Production

dotnet publish -c Release -r linux-x64

Deploy the output from bin/Release/net9.0/linux-x64/publish/ behind a reverse proxy (nginx, Caddy, etc.) with HTTPS enabled — ActivityPub federation requires a valid TLS certificate.

Project Structure

src/FediProfile/
├── Components/        # Blazor pages & layouts
├── Controllers/       # ActivityPub inbox endpoints
├── Core/              # ActivityPub & actor helpers
├── Identity/          # Mastodon OAuth integration
├── Models/            # Data models (actors, badges, links, etc.)
├── Services/          # Database, crypto, follow, profile services
├── wwwroot/           # Static assets & generated profiles
├── Program.cs         # App entry point & service registration
└── appsettings.json   # Configuration

Tech Stack

• Runtime: .NET 9.0 / ASP.NET Core
• UI: Blazor Server
• Database: SQLite (zero-config, file-based)
• Auth: Mastodon OAuth
• Protocol: ActivityPub / ActivityStreams

Comparison

Feature	FediProfile	Linktree	Others
Unlimited links	✓ Free	✓ Free	Varies
Federated identity	✓	✗	✗
Badge / credential system	✓ Built-in	✗	✗
ActivityPub integration	✓ Native	✗	✗
Self-hostable	✓	✗	Some
Open source	✓	✗	Some
No tracking / analytics sold	✓	✗	✗
Price	Free forever	Free / $9+	Varies

Contributing

Contributions are welcome! Here's how to get involved:

1. Fork the repository
2. Create a branch for your feature or fix: git checkout -b my-feature
3. Commit your changes: git commit -m "Add my feature"
4. Push to your fork: git push origin my-feature
5. Open a Pull Request against main

If you find a bug or have an idea, open an issue.

Support

FediProfile is free and open source. If it's useful to you, consider buying me a coffee to help cover hosting costs and fuel development:

License

Licensed under the GNU Lesser General Public License v3.