Status: release candidate 1.0 — not yet in the stores.
Developed with AI assistance (Claude Code); every change is reviewed and tested by the maintainer.
Features
- Library on the device: imports are copies, the original file is never modified; search,
favorites, tags, versions you can go back to.
- Viewer for large documents (1000+ pages), sharp at the screen's full resolution at every
zoom, search in the text, night mode.
- Annotate: highlight, underline, strike, pen, shapes, text and notes.
- Sign and fill forms: draw, type or pick a picture of your signature; fill AcroForm fields.
- Pages: reorder, rotate, delete, insert, extract.
- Redact for real: the text under a box is removed from the file, not just covered.
- Erase page content with a brush, a box or by picking one object: text, images and
drawings under it leave the file; filled white, with the background colour or a picked one.
- Tools: password protection, make the file smaller, optimise, repair, save a page as an image.
- Convert Word, Excel, CSV, text, Markdown and HTML files to PDF on the device (Android),
with a preview before saving; export a PDF as an editable Word file, as text or Markdown,
or every page as an image.
- Scan paper with the camera (or from a photo): captures by itself when the page is steady
and sharp, an Enhance filter that removes shadows, many pages in one go (reorder, rotate,
retake, touch up a mark), ID cards front and back on one A4 page; photos to PDF, and OCR
that makes scans searchable — all on the device.
- Transfer to your other device without an account, or as a
.selispack file (below).
- English and Greek, light / dark / sepia themes.
Screenshots
Install
Selis 1.0 is distributed through Google Play and GitHub Releases (signed APKs); the App
Store follows. Android needs version 8.0 or newer with Android System WebView 111 or newer
(updated through Google Play); on an older WebView Selis shows an "Update Android System WebView"
screen (ADR 0031). Not yet in F-Droid (see docs/store/fdroid/README.md).
GitHub Releases: every release has one signed APK per ABI and a universal APK, named
selis-<version>-<abi>.apk (arm64-v8a for nearly every phone; also armeabi-v7a, x86,
x86_64, universal), with a SHA256SUMS file. The APK signing certificate's SHA-256 is
published on the download page.
Updates with Obtainium:
- Obtainium › Add app › App source URL:
https://github.com/Fiouri/selis.
- Additional options › Filter APKs by regular expression:
arm64-v8a\.apk$ (or the ABI of
your device, or universal\.apk$). Asset names keep this pattern from release to release.
- Optional: Include prereleases to get release candidates (
1.0.0-rc.N) too.
- Add, then Install. Obtainium checks GitHub for new releases and installs updates signed with the
same key; Play and GitHub installs use the same app signing key, so you can switch between
them without reinstalling.
Transfer (device to device, no account)
Send documents straight to your other device:
- Send tab: choose documents (optionally with their version history) → a QR code and a
selis://transfer/… link appear (valid once, for 10 minutes).
- On the other device, Receive tab: scan the code (or paste the link; the system camera app
can open the link too).
- Both screens show the same 6-digit code. The sender confirms only if it matches.
- The documents arrive verified (BLAKE3) in the other library, labelled "received". An
interrupted transfer resumes where it stopped, even after the app was closed.
After a transfer you can save the device: next time it is one tap (no QR code) while the
other device has its Receive tab open. Move whole library (Send tab) sends everything —
documents with versions, tags, favorites, signatures and settings — to a new phone; documents it
already has are skipped, so running it again changes nothing.
No network at all? Save as file… (Send tab) puts the chosen documents — or the whole library —
into one .selispack file, optionally protected with a passphrase, for USB, e-mail or your own
cloud. Open it with Selis ("Open with", or Receive › Open a .selispack file); a damaged,
truncated or altered file adds nothing (ADR 0012).
Devices connect directly when they can (same Wi‑Fi, or across networks), otherwise through an
encrypted relay. Settings › Transfer: Local network only (no relay, no address lookup) or your
own relay. Nothing touches the network until you open the Transfer screen. Details:
docs/PRIVACY.md, protocol: ADR 0010.
Developers: cargo run -p selis-transfer --example selis-peer -- send <file.pdf> (or
receive <link>) is a terminal peer for testing against the app;
cargo run -p selis-core --example selispack -- make|open … makes and checks packs.
Privacy
Selis collects nothing. There is no account, no analytics, no crash reporting and no network
access at startup. Your library lives in the app's private storage on your device. The network is
used only by Transfer, while you use it: see docs/PRIVACY.md.
Build from source
Requirements: Node 22 (.nvmrc), Rust 1.98.1 (rust-toolchain.toml), and the
Tauri 2 prerequisites for your platform
(Windows: MSVC build tools + Windows SDK). Android: Android Studio, JDK 17, NDK 27 (NDK_HOME).
npm ci
npm run fixtures # generate the test PDF corpus
npm run tauri -- dev # desktop
npm run tauri -- android dev # Android emulator or USB device
npm run tauri -- android build --debug --apk
Run the UI in a browser with an in-memory backend (no Rust needed):
npm run dev:mock -w @selis/app
Checks: npm run verify:tier1 (TypeScript, ESLint, Vitest, rustfmt, Clippy, cargo test, cargo-deny).
Repository layout
| Path | What |
|---|
apps/app | The Tauri app: React UI (src/) and Rust shell (src-tauri/) |
crates/selis-core | Library index (SQLite), versions, atomic file store, BLAKE3 |
crates/selis-transfer | Peer-to-peer transfer (iroh): tickets, handshake, gated blobs, resume; selis-peer dev CLI |
packages/engine | PDF engine wrapper (EmbedPDF / PDFium WASM in a Web Worker) |
packages/ui | Design tokens and UI primitives |
packages/fixtures | Synthetic PDF test corpus generator |
docs/ | Spec, architecture decisions (ADRs), spike reports |
Contributing
See CONTRIBUTING.md and the Code of Conduct.
Security issues: please follow SECURITY.md.
Translations
Selis ships in English and Greek. Strings live in apps/app/src/i18n/*.json (ICU message
format). New strings are written in English first; Greek is completed before each release
candidate. New languages are welcome once the UI stabilizes.
License
Selis is licensed under the Apache License 2.0. See NOTICE for third-party
components.
