Pixelfed is a free, open-source photo-sharing platform that works like Instagram but runs on independent, federated servers. Users on different Pixelfed instances can follow each other through the ActivityPub protocol, with no single company in control.
It is one of the best-known apps in the fediverse, the network of interoperable social services.
What Pixelfed is and how it works
Pixelfed is built around images. Where Mastodon centres short text posts, Pixelfed puts the photo first, with captions, comments and likes around it. Its feed, profile grid and discovery pages will look familiar to anyone who has used Instagram, and Wikipedia notes that it “has photo sharing features similar to Instagram and is sometimes considered an ethical alternative to Instagram.”
The key difference is structural. Pixelfed is software, not a single website. Anyone can install it on a server, and each installation is called an instance. An instance can serve a family, a photography club, a school or a large public community. Because instances speak ActivityPub, an account on one can follow and interact with accounts on another, and with accounts on other ActivityPub software.
The project was created by developer Daniel Supernault. His flagship instance has been run with very little moderation staff: he was quoted as saying that “A single mod can handle most of the load,” a sign of how small and manageable many federated communities can be.
Federation also changes what “joining” means. On a centralised service, signing up places an account inside one company’s walled garden, and the rules can change overnight. On Pixelfed, a person picks an instance, and that choice sets the local culture, the moderation team and the terms of use. A nature-photography instance may enforce strict rules about captions and location tags, while a general-purpose one may be more relaxed. Neither choice cuts the user off from the rest of the network, because the shared protocol carries follows, likes and comments between servers.
For newcomers, the practical steps are simple: browse a directory of instances, read the local rules, create an account, and follow a few photographers to seed the feed. Following accounts on other servers works by entering their full handle, which names both the user and the instance they live on.
Core features
The feature set covers the basics of a photo network and adds some privacy-minded choices.
- Posts and collections. Users can post photos, stories and collections. Each post allows a maximum of 10 photos or videos attached.
- Feeds. Posts from people on the same instance appear in a local feed, while a discover page surfaces images that may interest a user.
- Locked accounts. Pixelfed allows accounts to be locked, so that followers must be pre-approved by the owner.
- Content warnings. Like Mastodon, it emphasises discovery feeds and content warnings.
- Security. Pixelfed supports two-factor authentication via time-based one-time password mobile apps.
There is no algorithm built to maximise engagement, and no advertising layer. Instance operators decide the rules, storage limits and moderation approach, which is both the strength and the main burden of the model.
Privacy options matter more on a photo network than on a text one, since images often show people, homes and routines. Locked accounts let a user keep a private circle, and content warnings let a photographer hide sensitive images behind a click. Two-factor authentication reduces the risk of a stolen password handing over an account. None of this removes the need for judgement: a post that reaches another server is copied there, and deleting it later depends on that server honouring the request.
Photographers who care about presentation tend to like the absence of heavy compression tricks and engagement bait, but image quality and upload limits are decided by each instance. Checking those limits before committing a large archive to a server is sensible.
Apps and the wider Pixelfed project
For years Pixelfed was used mainly through the web, with third-party mobile clients filling the gap. Official and third-party apps for both Android and iOS are available, and the official apps launched in January 2025, according to Wikipedia. That removed one of the most common objections from people comparing it with Instagram.
The project has also spawned a sibling called Loops, a short-video service aimed at the fediverse’s answer to TikTok. Users can post videos that are up to 60 seconds long. Loops is funded by an NGI0 core grant, sponsors and donations, a funding mix that reflects how most federated software is sustained: public-interest grants and community support rather than venture capital.
Taken together, the photo app and the video app show a broader strategy: rebuild familiar social formats on open protocols, so that people who dislike advertising-driven platforms have a place to go without giving up the formats they enjoy. Whether that strategy reaches a mass audience is an open question, but it already serves communities that value ownership over scale.
How Pixelfed compares with other fediverse services
Pixelfed sits alongside several other ActivityPub projects, each focused on a different kind of content. Mastodon handles microblogging. PeerTube hosts longer videos, and Lemmy runs link aggregation and discussion forums. Because they share a protocol, they can often see and respond to each other’s content, although how well a feature translates depends on each project’s implementation.
| Service | Main content | Closest mainstream equivalent |
|---|---|---|
| Pixelfed | Photos and short albums | |
| Mastodon | Short text posts | Twitter/X |
| PeerTube | Video hosting | YouTube |
| Lemmy | Links and threaded discussion |
The comparison above is a simplification drawn from the Wikipedia entry on Pixelfed, which describes the platform as similar to Instagram, and from the general design of each project.
The mapping is loose by design. A Pixelfed user who follows a Mastodon account sees that account’s posts in a familiar feed, and a reply from Mastodon can appear under a Pixelfed photo. What differs is the presentation: images are displayed large and in grids, while text-first software tends to shrink pictures into a timeline. Anyone choosing between these services is really choosing which presentation suits the content they want to share, since one identity per service is the norm.
Reviewers have described the experience in similar terms. InfoWorld columnist Oliver wrote that “Mastodon and Pixelfed feel safer than their non-federated counterparts” and called Pixelfed the fediverse answer to Instagram. The same review said it was early days “in the Pixelfediverse”, with content that was more sparse but either more interesting or at least not manipulative.
Trade-offs to weigh before joining
Pixelfed trades reach for control. The audience is much smaller than Instagram’s, so photographers who rely on discovery by strangers may find growth slower. Choosing an instance matters: its moderation policy, its stability and its federation decisions all shape the experience. Some instances block others, which can limit who sees a post.
Moving between instances is possible in the fediverse in general, but followers and content do not always transfer smoothly, so it is worth picking an instance with a clear track record. Anyone with technical skills can instead host a personal instance and set the rules themselves.
On the other hand, users keep a clearer picture of who runs their data, and the code is open for inspection. For people leaving ad-driven platforms, that trade is often the entire appeal.
Frequently asked questions
Is Pixelfed free?
The software is free and open source. Individual instances may set their own rules, and some ask for donations to cover hosting costs.
Can Pixelfed users follow people on Mastodon?
Generally yes. Both use ActivityPub, so accounts can follow each other across the two services, though some features may display differently.
Is there a Pixelfed mobile app?
Yes. Apps exist for both Android and iOS, from the project itself and from outside developers, so photos can be posted from a phone as well as a browser.
Can accounts be made private?
Yes. Accounts can be locked, so that followers must be pre-approved by the owner.
