StringLane opens your localization folder and gives you a live side-by-side view of every language. Changes write directly to your source files: no import, no export, no round trips.

This tutorial takes you from a fresh install to your first committed translation in about 10 minutes.

Step 1: Download and install#

Get the build for your platform from stringlane.app/download. StringLane runs on macOS, Windows and Linux.

macOS#

Download the .dmg — Apple Silicon for M1 and later, Intel for x86_64. Requires macOS 13 Ventura or later. Open the disk image, drag StringLane to your Applications folder, and launch it.

The build is signed with a Developer ID certificate and notarised by Apple, so it opens without a Gatekeeper warning.

Windows#

Download the x64 installer (StringLane-Setup-x64.exe) and run it. Windows 10 or 11.

The installer is not code-signed yet, so SmartScreen will warn about an unknown publisher on first run. Click More info → Run anyway.

Linux#

Two options:

chmod +x StringLane-x86_64.AppImage && ./StringLane-x86_64.AppImage

The AppImage runs on any distro and self-updates in place — it is the recommended option, and on Arch or Manjaro it is the only one, as there is no pacman package. The .deb suits Debian, Ubuntu and Pop!_OS, but does not auto-update: reinstall to upgrade.

Every artifact is listed with a checksum in SHA256SUMS if you want to verify the download.

The Welcome screen shows the formats StringLane supports, ARB · .strings · .xcstrings · Android XML · i18next JSON, along with the core guarantees: Local only · BYOK AI · No account.

Step 2: Open your localization folder#

StringLane works directly with your project's localization files. You don't need to move anything.

Three ways to open a project:

Drag your folder onto the StringLane window: drop any folder that contains ARB, .strings, Android XML, i18next JSON, or xcstrings.
⌘O (File → Open Folder): navigate to your project root or its localization subdirectory.
⌘P → Open folder…: via the command palette.

StringLane scans the folder recursively and loads all locale files it finds. The project name (derived from the folder name) appears in the sidebar header.

Step 3: Tour the interface#

Once a project loads, you land in the unified editor: a key sidebar on the left + per-key detail pane on the right.

Sidebar (280px, left): every key in your project, grouped by namespace (the segment before . or _). Search, filter by locale or Issues-only, and a ⌘P Command Palette launcher at the bottom.
Detail pane: the key name + chips + Grid/List toggle; below, every locale side-by-side with its value, AI translate button, and validation rail.
Issues panel (right rail or bottom drawer, your choice), auto-opens when the project has any validation issues. Each row jumps you to the offending cell.
Status bar (bottom): completion ring, error / warning chips, save indicator with "Saved · Ns ago" recency.

Step 4: Edit a translation#

Click any locale's value in the detail pane to edit it inline. Type your translation, then press:

Enter: confirm and move to the next locale
Tab: confirm and move to the next locale
Escape: cancel and restore the original value
⌘Z: undo changes in the current cell

The edit is saved automatically the moment you leave the cell: no Save button, no confirmation dialog. StringLane writes directly to the source file on disk; the status bar shows "Saved · just now".

Step 5: Verify auto-save#

After editing, open your localization file in any text editor (VS Code, Xcode, etc.). The change is already there. StringLane never buffers: every confirmed edit lands in the file immediately.

If you run flutter gen-l10n or rebuild your app right now, the new translation is live.

Step 6: Speed up with the command palette#

Press ⌘P to open the command palette: one searchable menu for every action in the app. Type to fuzzy-search actions and keys across the project.

The palette is the fastest path to:

Add key…: create a new translation key
Translate all missing with AI: one-shot fill every gap across every locale
Jump to key: type a key name or value fragment to teleport
Toggle Issues panel, theme switch, open Settings

See Use the Command Palette.

What's next#

Use the List View editor: the unified sidebar + detail-pane surface you just saw, in depth.
Set Up AI Translation in 5 Minutes: let the model fill in missing translations.
Translate all missing: the batch flow when you have gaps across multiple locales.
How to Add a New Locale: add a language by its BCP 47 code.
How to Read Validation Badges: understand the rail colors and loud pills.
Customize keybindings: rebind any in-app shortcut.
How to Turn Off Usage Analytics: what StringLane sends, and the toggle that stops it.

Getting Started