Sideload Spanish

Learn Spanish without leaving your browser. Sideload Spanish replaces some English words on reading-heavy web pages with Spanish translations, starting simple and getting harder as you progress.

HOW IT WORKS

Browse normally on supported sites. Common English words are replaced inline with Spanish. Hover to see the original word and its translation, then use the tooltip action to mark a word as known and advance your progress.

PROGRESSIVE DIFFICULTY

Start with the most common words at A1 level. As you master them, harder vocabulary unlocks through higher levels. The extension tracks your progress and adapts automatically.

SMART FEATURES

- Struggling word detection: words you keep seeing but have not learned yet get highlighted
- Tier readiness: see at a glance whether you're ready to advance
- Works on dynamic pages: infinite scroll and single-page apps are handled
- Safer default site access: enabled by default on curated reading-heavy sites
- Extra control: add allowed domains yourself or enable it on all sites

YOUR PRIVACY

Your progress and settings are stored locally in your browser. No analytics, no ad tracking, and no telemetry. The extension reads page text on pages where it is enabled in order to replace words inline for the user-facing learning feature.

WHAT'S INCLUDED

- 3,600+ word vocabulary across 5 difficulty tiers
- Hover tooltips with translations, gender, and tier
- Progress dashboard with tier breakdown
- Density control for how many words get replaced
- Curated default allowlist for reading-heavy sites, plus extra allowed domains and an allow-all option

Perfect for beginners starting Spanish or intermediate learners who want daily exposure while browsing.