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Head-to-head · Minecraft Seed Map Tools

Chunkbase vs Amidst

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score Chunkbase #2 in Minecraft Seed Map Tools 9.3/10 Free · no account needed Free plan✓ 4 of 5 features Open Chunkbase
Amidst #8 in Minecraft Seed Map Tools 6.2/10 Free · open source (GPLv3) Free plan✓ 2 of 5 features Get Amidst

Chunkbase leads on 1 check, Amidst on 0, and 5 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreChunkbase · 9.3/10
  • Free planboth
  • Most featuresChunkbase · 4 of 5

Chunkbase scores higher on our rubric for minecraft seed map tools: 9.3 against 6.2 out of 10; our editors rank them #2 and #8.

Chunkbase offers bedrock edition; Amidst doesn't.

Chunkbase is the better fit for finding structures and biomes in an existing world. Amidst is the better fit for mapping old Java worlds from 1.17 or earlier.

  • Chunkbase fits best

    Finding structures and biomes in an existing world

  • Amidst fits best

    Mapping old Java worlds from 1.17 or earlier

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Side by side

Feature Chunkbase 9.3/10 Visit ↗ Amidst 6.2/10 Visit ↗
At a glance
Editor score 9.3 6.2
Ranking #2 in Minecraft Seed Map Tools #8 in Minecraft Seed Map Tools
Best for Finding structures and biomes in an existing world Mapping old Java worlds from 1.17 or earlier
Pricing model Free Free
Starting price Free · no account needed Free · open source (GPLv3)
Free plan ✓ ✓
Free trial — —
Features Chunkbase 4/5 · Amidst 2/5
Java Edition ✓ ✓
Bedrock Edition ✓ (best) —
Seed finder ✓ (best) Not checked yet
Nether & End maps ✓ (best) Not checked yet
Open source Not checked yet ✓ (best)
Specs
Runs on Browser Windows, Any OS with Java
Newest Java version 26.3 1.17
Our review
Pros
  • Covers Java 1.7 to 26.3 with Large Biomes, and Bedrock from 1.14 to 26.50
  • Advanced search mixes targets with nearby biome, feature and terrain conditions
  • Reads the seed from a save file and keeps named markers for each world
  • Reads seeds from save games and exports the map as an image
  • Shows slime chunks, End islands and more than a dozen structure types
  • Maps very old beta-era worlds that most tools skip
Cons
  • Markers and completed spots stay in one browser unless you export them
  • Dungeons, world spawn and geodes are flagged as not fully reliable
  • Some small structures point only to their chunk's centre, not the exact block
  • Support stops at Minecraft 1.17, before the 1.18 terrain overhaul
  • The last release, 4.7, dates from June 2021
  • The project is looking for a new maintainer
Our verdict

Chunkbase is the seed map most other tools get measured against. Type or paste a seed, pick the edition and version the world was generated on, and the Overworld, Nether or End appears with biomes and around thirty toggleable features,…

Read the review →

Amidst, short for Advanced Minecraft Interface and Data/Structure Tracking, is one of the oldest seed viewers still available, and its biome colours live on in several newer tools that credit it. It renders an overview of a Java Edition…

Read the review →
  1. ChunkbaseMinecraft Seed Map Tools 9.3Free · no account needed
  2. AmidstMinecraft Seed Map Tools 6.2Free · open source (GPLv3)

Strengths and trade-offs

  • Chunkbase — where it wins

    • Covers Java 1.7 to 26.3 with Large Biomes, and Bedrock from 1.14 to 26.50
    • Advanced search mixes targets with nearby biome, feature and terrain conditions
    • Reads the seed from a save file and keeps named markers for each world

    Where it doesn't

    • Markers and completed spots stay in one browser unless you export them
    • Dungeons, world spawn and geodes are flagged as not fully reliable
    • Some small structures point only to their chunk's centre, not the exact block

  • Amidst — where it wins

    • Reads seeds from save games and exports the map as an image
    • Shows slime chunks, End islands and more than a dozen structure types
    • Maps very old beta-era worlds that most tools skip

    Where it doesn't

    • Support stops at Minecraft 1.17, before the 1.18 terrain overhaul
    • The last release, 4.7, dates from June 2021
    • The project is looking for a new maintainer
  • Chunkbase9.3/10 · Free · no account needed

    The reference seed map: Java back to 1.7, Bedrock up to 26.50, advanced search and a seed finder, all free.

    Open ChunkbaseFull verdict →
  • Amidst6.2/10 · Free · open source (GPLv3)

    The classic desktop seed viewer, still useful for pre-1.18 Java worlds but frozen at Minecraft 1.17.

    Get AmidstFull verdict →

More comparisons

All minecraft seed map tools comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update