Measured 2026-10-16, uncompressed until now: the directory's answers (the feed list ipx reads, 603 KB of JSON, ~134 ms of a 159 ms Directory request), ipx's snapshot upload (~100 KB each half hour), both /metrics (4.7 and 0.9 KB every 15 s) and every trace export to Tempo. Already compressed: ipx-web's answers (zstd, #239), the home page and the directory's public pages through Cloudflare (brotli, zstd). - The directory compresses with brotli, zstd or gzip as asked, and unpacks a gzipped request. - ipx sends its snapshot gzipped; the directory is deployed first. - Both /metrics answer gzipped, as Prometheus asks. - opentelemetry-otlp's gzip-http: OTEL_EXPORTER_OTLP_COMPRESSION=gzip compresses the export, set for all three in production's compose file; Caddy's exporter reads the same variable. - web/build.mjs writes .br (quality 11) and .gz (level 9) beside each text file, and Caddy serves them in place (file_server precompressed): app.js 30 KB where zstd on the fly gave 37, app.css 11 where 14. A .br or .gz asked for by name is refused, or /admin.js.br would be the admin page's script without the check that keeps it to admins; in a handle of its own, since a bare respond runs after the handles. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
ipx
A self-hosted podcatcher for a household. It checks your feeds, downloads the episodes, and serves
a web UI modelled on the 2004 Mac app iPodderX, for any number of people sharing one copy of
the files. One Rust binary, ipx, is both the daemon and the command line.
It is a rewrite of ipodderx-core, the Python engine behind iPodderX (2004-2008, Ray Slakinski & August Trometer).
What it does
- The web UI. It has a toolbar, and a feed list that opens with the Directory, Currently Listening and All Subscriptions. Items sit in a sortable table with a Files pane, and there is a player bar. It comes in Dark, Light and Classic themes, and works on a phone.
- Several people, one copy. Each person has their own subscriptions and their own read, pinned and playback state. There is one file on disk per episode, however many people want it. People sign in with a password or through a proxy (Cloudflare Zero Trust or Authentik), and admins manage accounts and settings.
- Scanning. Feeds are checked on a schedule, globally or per feed, and a feed's own TTL is honoured. Keyword, explicit-content and media-type filters decide what is downloaded, with a limit on how many of a feed's newest episodes are downloaded.
- Downloads. Files come over HTTP or BitTorrent and are filed into a folder per feed. Retention deletes the oldest files to stay under a disk quota or an age limit, and never touches an item someone has pinned.
- OPML. You can import and export your own subscriptions. You can also subscribe to an OPML URL, which keeps a whole list in step as a folder.
Run it
With Docker:
docker build -t ipx .
docker build -f Dockerfile.web -t ipx-web .
docker compose up -d
docker-compose.yml is a sample: ipx, with its database in SQLite and its three volumes
(/config, /data and /downloads) in folders beside the file, and ipx-web, the page, served by
Caddy in front of it. Change them to suit. The UI is on port 8099. BitTorrent uses 6881
over TCP and UDP. Files are written as PUID/PGID, 99:100 by default.
From source:
cargo build --release
./target/release/ipx daemon
The first start creates admin / ipodderx. Sign in at /login, then change it:
echo -n 'a good password' | ipx user passwd admin
The UI is plain HTTP, so put TLS in front of it if it is reachable from outside your network.
Documentation
| docs/configuration.md | Every config key, path and environment variable |
| docs/cli.md | Every command, including ipx user |
| docs/users.md | Accounts, and what several people share |
| docs/sso.md | Signing in through Cloudflare Zero Trust or Authentik |
| docs/architecture.md | How it works: modules, schema, control socket, HTTP API |
| crates/ipx/CHANGELOG.md, web/CHANGELOG.md, crates/directory/CHANGELOG.md | What changed, by release, for ipx, the page and the directory |
| CLAUDE.md | Notes for working on the code, including how production is deployed |
Tests
cargo test # the engine: parsing, filters, retention, schedules, SQL, per-user state
node tests/page-smoke.js # the page script loads without throwing
node tests/native-bridge.js # the page hands playback to a native shell
npx playwright test # a real browser against a real daemon on fixture feeds
npm install gets the test runner, and npx playwright install --with-deps chromium gets the
browser.
License
MIT, see LICENSE. The icons are Font Awesome Free 7.3.1 by @fontawesome, under CC BY 4.0, embedded as SVG.