Server to Singleplayer World Converter
- Android app
- Not listed
- Free plan
- Yes
- Runs on
- Web
Summary
Server to Singleplayer World Converter is a free browser-based tool for turning Minecraft Java or Bedrock server worlds into singleplayer worlds. It accepts Java world ZIP files and Bedrock .mcworld or ZIP files, detecting the edition and format automatically. Players can transfer one chosen player's inventory, position, and experience, or begin fresh; in multiplayer worlds, only that player's data carries over. The converter preserves Java regions and chunks or the full Bedrock LevelDB, while changing player-related records. For Java worlds, it also removes certain Paper and Bukkit data and stale session information. The maker says the conversion runs in the browser without uploads, a backend, or analytics, and that its single HTML file supports offline use. Optional Java player-name lookups make network calls; Bedrock conversion does not. Bedrock players appear by XUID with an inventory preview. Java gamerules reset to defaults and must be reapplied. Some pre-1.16 Java worlds are unsupported, and the converted world should be opened in the server's Minecraft version. The project is licensed under PolyForm Noncommercial License 1.0.0.
Who it is for
This tool suits Minecraft players who want to use a Java or Bedrock server world in singleplayer. It is especially relevant to players who want to carry over one player's inventory, position, and experience.
What is good
- Accepts Java ZIP and Bedrock world files.
- Detects edition and format automatically.
- Can transfer one player's inventory, position, and experience.
- Maker describes offline use and client-side conversion.
What to know first
- Java gamerules reset to defaults.
- Some pre-1.16 Java worlds are unsupported.
- Converted worlds should use the server's Minecraft version.
- Licensed for noncommercial use.
Verdict
The converter handles Java and Bedrock worlds and lets players choose whether to transfer one player's data. Check the stated compatibility limits and Java gamerule behavior before converting.
Server to Singleplayer World Converter plans and pricing
All plansCompared on Minecraft world converters
- Free plan
- Yesimsirr.github.io
- Source editions
- Java Edition, Bedrock Editionimsirr.github.io
- Target editions
- Java Edition, Bedrock Editionimsirr.github.io
- Java-Bedrock conversion
- Yesimsirr.github.io
- Version conversion
- Noimsirr.github.io
- Format conversion
- Yesimsirr.github.io
- Batch conversion
- Noimsirr.github.io
Facts
- Purpose
- Converts Minecraft Java or Bedrock server worlds into ready-to-play singleplayer worlds.imsirr.github.io · 3 Oct 2026
- Accepted files
- Accepts Java world ZIP files and Bedrock .mcworld files or ZIP files, and detects the edition and format automatically.github.com · 3 Oct 2026
- Player transfer
- Can carry over a chosen player's inventory, position, and experience, or start fresh.github.com · 3 Oct 2026
- Multiplayer worlds
- Only the selected player's data is carried over from a multiplayer world.github.com · 3 Oct 2026
- World preservation
- The converter preserves Java regions and chunks and the full Bedrock LevelDB, changing player-related records.github.com · 3 Oct 2026
- Java cleanup
- It removes Paper and Bukkit datapack entries, paper-world.yml, stale session.lock, and Bukkit or Paper-only NBT tags.github.com · 3 Oct 2026
- Java name lookup
- Optional Java player name lookup uses PlayerDB, Crafthead, and Ashcon, and the converter can read usercache.json included in the ZIP.github.com · 3 Oct 2026
- Privacy
- The maker says conversion runs client-side with no uploads, backend, or analytics; optional Java name lookups make network calls, while Bedrock conversion makes none.github.com · 3 Oct 2026
- Offline use
- The maker describes the single HTML file as supporting full offline use.github.com · 3 Oct 2026
- Bedrock player IDs
- Bedrock players are shown by XUID with an inventory preview because the maker says there is no open gamertag lookup.github.com · 3 Oct 2026
- Game rules limitation
- Java server gamerules reset to defaults because they are not stored in the world folder and must be reapplied manually.github.com · 3 Oct 2026
- Compatibility limits
- Pre-1.16 Java worlds that use flat RandomSeed without WorldGenSettings are unsupported, and the converted world should be opened in the server's Minecraft version.github.com · 3 Oct 2026
- Integrations and libraries
- The README credits NBTify, JSZip, and pako, and names PlayerDB, Crafthead, and Ashcon for optional Java name lookups.github.com · 3 Oct 2026
- License
- The project states it is licensed under PolyForm Noncommercial License 1.0.0.github.com · 3 Oct 2026
- Audience
- The tool is for Minecraft players converting server worlds for singleplayer use, with Java and Bedrock workflows documented.github.com · 3 Oct 2026
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Sources
- imsirr.github.io/world-converter/· checked 3 Oct 2026
- github.com/imSirr/world-converter/blob/main/README· checked 3 Oct 2026