Data Status & Verification
Current Dataset
Data Verification
All breeding data is sourced from PalCalc by Tyler Camp, an open-source Palworld breeding calculator. Data files are pinned to specific releases with SHA-256 checksums to ensure accuracy.
Source File Checksums
Validation: The build script enforces exact database version (v27), Pal count (299), and breeding pair count (44,851) to prevent accidental data corruption.
Portrait assets: 299 PNG files totaling 4.09 MB, downloaded from the PalCalc pinned UI resource directory.
Update History
v1.17.6 → v1.19.1
2026-08-19Database v26 → v27
Updated to PalCalc v1.19.1 to incorporate corrected breeding inheritance mechanics. The v1.19.1 release includes scraped breeding constants from game files (PalCalc commit ef408fa, 2026-07-27), fixing IV inheritance probability from 50/25/25 to the accurate 50/33.3/16.7 distribution.
Palworld v1.0.3 patch note: The Palworld v1.0.3 update (2026-08-12) did not change breeding mechanics. This update was solely for PalCalc data accuracy improvements.
v1.17.6 pinned
2026-07-17Database v26
Initial production dataset. Pinned PalCalc v1.17.6 following the Palworld 1.0 release (2026-07-10), which introduced major breeding table changes, the Ancient Hatchery, mutation mechanics, and new cake types.
Runtime Architecture
The Palbreed calculator operates entirely in the browser with no external API dependencies. All breeding logic, Pal data, and solver algorithms run locally for maximum speed and privacy.
- Bundled dataset: 9.96 MB JSON payload compiled at build time
- No telemetry: Calculator state, saved plans, and roster data remain in browser local storage
- Offline-capable: Once loaded, the calculator functions without network access
- Update cadence: Dataset refreshes when PalCalc releases new breeding data or when Palworld patches change breeding mechanics