No. 8 of 18 ·Minecraft World Converters

Server to Singleplayer World Converter

Web

Freedom report

Two barsScore 6.4

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely1 of 6 device platforms
DocumentedPlans, terms and facts published

Server to Singleplayer World Converter is ranked #8 of 18 in Minecraft world converters on Freedom251. It runs on Web. There is a free plan.

Server to Singleplayer World Converter plans and pricing

All plans

Free Free Browser based · Java and Bedrock world conversion github.com · 3 Oct 2026

Compared on Minecraft world converters

Free plan: Yes
Source editions: Java Edition, Bedrock Edition
Target editions: Java Edition, Bedrock Edition
Java-Bedrock conversion: Yes
Version conversion: No
Format conversion: Yes
Batch conversion: No

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The record

Purpose: Converts Minecraft Java or Bedrock server worlds into ready-to-play singleplayer worlds.
Accepted files: Accepts Java world ZIP files and Bedrock .mcworld files or ZIP files, and detects the edition and format automatically.
Player transfer: Can carry over a chosen player's inventory, position, and experience, or start fresh.
Multiplayer worlds: Only the selected player's data is carried over from a multiplayer world.
World preservation: The converter preserves Java regions and chunks and the full Bedrock LevelDB, changing player-related records.
Java cleanup: It removes Paper and Bukkit datapack entries, paper-world.yml, stale session.lock, and Bukkit or Paper-only NBT tags.
Java name lookup: Optional Java player name lookup uses PlayerDB, Crafthead, and Ashcon, and the converter can read usercache.json included in the ZIP.
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.
Offline use: The maker describes the single HTML file as supporting full offline use.
Bedrock player IDs: Bedrock players are shown by XUID with an inventory preview because the maker says there is no open gamertag lookup.
Game rules limitation: Java server gamerules reset to defaults because they are not stored in the world folder and must be reapplied manually.
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.
Integrations and libraries: The README credits NBTify, JSZip, and pako, and names PlayerDB, Crafthead, and Ashcon for optional Java name lookups.
License: The project states it is licensed under PolyForm Noncommercial License 1.0.0.
Price from: Free

Where it ranks on Freedom251

Best Minecraft World Converters in 2026#8 of 18

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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