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SeedLander
United Kingdom
What it is
SeedLander is a browser toolkit for analysing Minecraft seeds, with biome maps, structure finding, ore predictions, slime chunk calculations, and portal management. It supports Java Edition and Bedrock Edition, including Java Large Biomes. The structure finder covers more than 25 structure types and provides coordinates for locations such as villages, strongholds, temples, mansions, and monuments. SeedLander reports 97%+ accuracy for most structures on Java and Bedrock, while noting that results are predictions rather than guarantees.
The tools run in the browser using WebAssembly, and seeds are not sent to SeedLander servers for processing. Map, finder, and account pages are touch-friendly on phones and tablets; a dedicated mobile app is on the roadmap. The free Basic plan includes all seed tools, 10 custom markers, and three saved portal pairs. Premium costs £1.99 per month per world and adds unlimited markers and portals, ore tracking, structure completion tracking, notes, and an activity log. A Team add-on costs £2.99 per month per world on top of Premium and provides unlimited team members.
For and against
For
- Supports Java and Bedrock, including Java Large Biomes.
- Structure finder covers more than 25 types.
- Seeds are processed in the browser, not sent to its servers.
- Free plan includes all seed tools.
- Touch-friendly pages work on phones and tablets.
Against
- Structure results are predictions, not guarantees.
- Dedicated mobile app is on the roadmap.
- Premium costs £1.99 per month per world.
- Team add-on costs £2.99 per month per world on top of Premium.
The verdict
SeedLander offers seed maps and structure tools in a browser, with a free tier and paid per-world options. Treat structure locations as predictions, and consider the Premium and Team limits and costs if you need expanded collaboration.
Who it suits
SeedLander suits Minecraft Java and Bedrock players who want to explore seed maps and locate structures in a browser. Its shared markers, portals, and team features may suit groups coordinating their world exploration.
Plans and prices
Premium World
unlimited markers and portals · ore tracking · structure completion · notes
Read 15 Oct 2026 · seedlander.com
Free World
1 saved world · 10 custom markers · 3 portal pairs · all seed tools
Read 15 Oct 2026 · seedlander.com
Team add-on
unlimited teammates · roles and permissions · shared markers and portals · collaborative notes
Read 15 Oct 2026 · seedlander.com
Premium + Team
all Premium features plus unlimited teammates, custom roles, shared markers and real-time activity
Read 15 Oct 2026 · seedlander.com
Basic
all seed tools · 10 custom markers · 3 saved portal pairs
Read 30 Sep 2026 · seedlander.com
Premium
unlimited markers and portals · ore tracking · structure completion tracking · notes
Read 30 Sep 2026 · seedlander.com
On the record
- Account age rule
- The privacy policy says accounts require users to be at least 18, while public tools can be used without an account.seedlander.com · read 15 Oct 2026
- Account limits
- Users must be at least 13 to create an account, and paid Premium or Team subscriptions require the account holder to be 18 or older.seedlander.com · read 30 Sep 2026
- Accuracy
- SeedLander states that it achieves 97%+ accuracy for most structures on Java and Bedrock, while results remain predictions rather than guarantees.seedlander.com · read 30 Sep 2026
- Activity timing
- Team changes are reported in the activity feed within roughly 20 seconds.seedlander.com · read 15 Oct 2026
- Affiliation
- The terms state that SeedLander is independent of Mojang Studios and Microsoft.seedlander.com · read 15 Oct 2026
- Backup integration
- An optional backup service offers automatic FTP/SFTP backups priced at £2.99 per month per 2GB.seedlander.com · read 15 Oct 2026
- Biome tools
- Users can render and search many biomes, including Cherry Grove, Deep Dark, Mushroom Fields and cave biomes.seedlander.com · read 15 Oct 2026
- Browser-only delivery
- The service requires no Minecraft mod, client installation or download; a dedicated mobile app is only described as planned.seedlander.com · read 15 Oct 2026
- Browser operation
- The tools run in the browser using WebAssembly, and seeds are not sent to SeedLander servers for processing.seedlander.com · read 30 Sep 2026
- Browser processing
- Official pages say seed calculations run in-browser with WebAssembly and the seed is not uploaded unless saved to an account.seedlander.com · read 15 Oct 2026
- Discord integration
- An optional Discord bot add-on sends SeedLander activity notifications to a Discord server for £0.99 per month.seedlander.com · read 15 Oct 2026
- Game editions
- It supports Minecraft Java Edition and Bedrock Edition, including Java Large Biomes.seedlander.com · read 30 Sep 2026
- Independent limit: version choice
- The Reddit discussion emphasized selecting the exact seed, edition and game version because mismatches affect accuracy.reddit.com · read 15 Oct 2026
- Independent praise: biome results
- The Reddit commenter said they had not observed inaccurate biome results on either SeedLander or Chunkbase.reddit.com · read 15 Oct 2026
- Independent praise: saved accounts
- A Reddit user praised SeedLander for saving seeds in user accounts so the seed does not need to be re-entered repeatedly.reddit.com · read 15 Oct 2026
- Independent praise: structure results
- The same Reddit user reported finding some SeedLander structure results more accurate than Chunkbase.reddit.com · read 15 Oct 2026
- Independent use case
- A Reddit participant described using SeedLander’s seed map and ore finder for Minecraft planning.reddit.com · read 15 Oct 2026
- Integrations
- Optional add-ons include a Discord bot for activity notifications, and the service uses Stripe, Google AdSense, Google Analytics, Cloudflare, Resend or SMTP, and Krystal.seedlander.com · read 30 Sep 2026
