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+---
+title: HDF 4.3.1
+---
+
+<img alt="HDF4 Logo" align=right width=300 src="/assets/img/hdf4.png">
+
+# HDF 4.3.1
+
+## Release Information
+
+| Version | HDF 4.3.1 |
+| Release Date | 6/30/2025 |
+| Additional Release Information | [Release Notes](https://github.com/HDFGroup/hdf4/tree/hdf4.3.1/release_notes/RELEASE.txt) | 
+|| [Newsletter Announcement](https://www.hdfgroup.org/2025/06/release-of-hdf-4-3-1-newsletter-206/) | 
+|| [Compatibility Report for 4.3.1 vs 4.3.0](https://github.com/HDFGroup/hdf4/releases/download/hdf4.3.1/hdf4.3.1-vs-hdf4.3.0-interface_compatibility_report.html)
+|| [Compatibility Report for 4.3.1 vs 4.3.0 - Java-interface](https://github.com/HDFGroup/hdf4/releases/download/hdf4.3.1/hdf4.3.1-vs-hdf4.3.0-java-interface_compatibility_report.html) | 
+
+## Downloads
+
+#### NOTE:
+Applications that were created with earlier HDF4 releases AND employed internal information will not compile with HDF version 3.0.  Refer to the [*HDF 4.2 to 4.3 Migration Guide*](https://github.com/HDFGroup/hdf4/blob/master/doc/HDF-4.2-to-4.3-migration.md) for details.
+
+|  File  |  Type |
+| ----- | ---- | --------------------- |
+| [hdf4.3.1.tar.gz](https://github.com/HDFGroup/hdf4/archive/refs/tags/hdf4.3.1.tar.gz) | Source release   |
+| [hdf4.3.1.zip](https://github.com/HDFGroup/hdf4/archive/refs/tags/hdf4.3.1.zip) | Source release    |
+| [Ready to use Binaries](https://github.com/HDFGroup/hdf4/releases/tag/hdf4.3.1)  | Pre-built binary distributions for Unix and Windows |
+| [sha256](https://github.com/HDFGroup/hdf4/releases/download/hdf4.3.1/sha256sums.txt) | Checksum file   |
+
+Please refer to [Build Instructions](https://github.com/HDFGroup/hdf4/blob/hdf4.3.1/release_notes/INSTALL) for building with either CMake or Autotools.
+
+#### Known Problems:
+Some SZIP tests in mdfhdf failed when the SZIP encoder is not present and the failure can be ignored at this time.
diff --git a/downloads/index.md b/downloads/index.md
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 | Version | Usage | 
 | ---- | ----| 
-| [HDF 4.3.0](hdf4/hdf4_3_0.html) | New 4.3.x series with significant changes in public/private components | 
+| [HDF 4.3.1](hdf4/hdf4_3_1.html) | Series 4.3.x contains significant changes in public/private components | 
 | [HDF 4.2.16-2](hdf4/hdf4_2_16-2.html) (Patch Release) | Last release of the 4.2.x series | 
 
 ## h4h5tools