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auto_l10n

0.3.2createev/auto_l10n ↗New releases in your daily digest, changelog included.

Automatic Flutter app translation with zero code changes. One line in main.dart. Supports DeepL, MyMemory, Lingva, Google Translate, and custom translators.

Last release 7 months ago
23 Feb 2026
Too new to tell
only 1 release windows
Nearly every release is documented
notes for 5 of 5 stable releases
Nothing withdrawn
no release was ever pulled
7 months old
5 releases · first in 2026

Release timeline

5 releases since 2026

2026

20262026

One column per month.

Releases

0.3.223 Feb 2026Deprecated
Fixed remaining pub analysis warning in CLI AST visitor by suppressing deprecated analyzer member usage in a lower-bound compatible way.
Fixed remaining pub analysis warning in CLI AST visitor by suppressing deprecated analyzer member usage in a lower-bound compatible way.
Open source →
0.3.123 Feb 2026
Fixed pub points loss in static analysis: updated bin/generate.dart to satisfy curly_braces_in_flow_control_structures (no behavioral changes).
Fixed pub points loss in static analysis: updated bin/generate.dart to satisfy curly_braces_in_flow_control_structures (no behavioral changes).

Fixed pub dependency score warning by widening analyzer constraint to >=7.7.1 <11.0.0.
Open source →

Added layoutPolicy to autoL10n() / AutoL10nBinding.ensureInitialized():
- AutoL10nLayoutPolicy.off
- AutoL10nLayoutPolicy.safeFallback
- AutoL10nLayoutPolicy.safeEllipsisCurrent
Added layout-safe runtime handling for tight horizontal Row/Flex labels:
- optional fallback to source text
- optional translated ellipsis trimming (...) in conservative mode
Runtime bootstrap made deterministic: SharedPreferences cache -> ARB preload -> API fallback.
ARB-only mode no longer uses NoOpTranslator in runtime pipeline; API queue/flush is skipped when no translator is configured.
Unified cache key namespace by language: auto_l10n_<lang> (instead of translator-scoped keys).
Runtime cache no longer stores unchanged entries (translated == original).
Runtime translation patching now also handles Text.textSpan (in addition to Text.data and RichText).
Runtime lookup improved for case/whitespace mismatches (case-insensitive matching with preserved case pattern and trimmed lookup with preserved outer whitespace).
Retry behavior for failed API batches: up to 3 retry attempts, then stop until new input arrives.
DeepL XML mode fixes: safe XML escaping around placeholders and entity decode after translation.
CLI extraction upgraded to AST-first scanning and expanded to capture real-world UI patterns.
CLI now captures fallback literals in mixed expressions (e.g. ternary with one non-literal branch).
CLI now captures string arguments from mixed-signature calls (e.g. string + enum arguments in one call).
CLI now resolves const references (including qualified static const values) when extracting strings.
CLI keys are normalized with trim by default (cleaner ARB keys).
README updated with layout policy documentation and usage examples.

Open source →

0.2.020 Feb 2026

fix: remove env.dart import from default example scenario

Open source →

Additional notes

Generate CLI (dart run auto_l10n): from-code (scan Text('...') / Text("...")) or from-arb; optional --service (deepl, google, mymemory, lingva, mock) with --api-key for deepl/google. Output to assets/auto_l10n by default.
Pre-generated ARB only: autoL10n() with no provider loads from translationsPath (default assets/auto_l10n); no API key required.
Pre-generated + API: autoL10n(provider: ..., apiKey: ...) loads ARB first, translates missing strings via API.
API only: autoL10n(provider: ..., loadPregenerated: false).
autoL10n() top-level helper; translationsPath and loadPregenerated parameters on binding.
TranslationCache: optional preloaded map; addPreloaded() for async ARB load and persist.
NoOpTranslator when only pre-generated ARB is used.
RichText widgets are now patched and restored: translated text is shown in RichText / nested TextSpans, not only in Text.
Example app: user-generated content (text field → translated output), locale picker (device locale on launch with fallback to en), in-app copy about API key vs free providers, pre-generated ARB.

Open source →

0.1.020 Feb 2026

Runtime translation for Flutter Text and RichText via AutoL10nBinding.

Initial release.
Runtime translation for Flutter Text and RichText via AutoL10nBinding.
Built-in providers: DeepL, MyMemory, Lingva, Google Translate, Mock.
Optional targetLocale (defaults to device locale).
Custom translators via AbstractTranslator.
Per-language cache in memory and SharedPreferences.
Static ARB generation: dart run auto_l10n:generate.

Open source →