diff --git a/README.md b/README.md
index e9ef295..7ce9deb 100644
--- a/README.md
+++ b/README.md
@@ -58,26 +58,32 @@ Unpacked 12345 files to MyEncryptedGame from MyEncryptedGame.pak
 
 ## compatibility
 
-| UE Version | Version | Version Feature       | Read               | Write              |
-|------------|---------|-----------------------|--------------------|--------------------|
-|            | 1       | Initial               | :grey_question:    | :grey_question:    |
-| 4.0-4.2    | 2       | NoTimestamps          | :heavy_check_mark: | :heavy_check_mark: |
-| 4.3-4.15   | 3       | CompressionEncryption | :heavy_check_mark: | :heavy_check_mark: |
-| 4.16-4.19  | 4       | IndexEncryption       | :heavy_check_mark: | :heavy_check_mark: |
-| 4.20       | 5       | RelativeChunkOffsets  | :heavy_check_mark: | :heavy_check_mark: |
-|            | 6       | DeleteRecords         | :grey_question:    | :grey_question:    |
-| 4.21       | 7       | EncryptionKeyGuid     | :heavy_check_mark: | :heavy_check_mark: |
-| 4.22       | 8A      | FNameBasedCompression | :heavy_check_mark: | :heavy_check_mark: |
-| 4.23-4.24  | 8B      | FNameBasedCompression | :heavy_check_mark: | :heavy_check_mark: |
-| 4.25       | 9       | FrozenIndex           | :heavy_check_mark: | :heavy_check_mark: |
-|            | 10      | PathHashIndex         | :grey_question:    | :grey_question:    |
-| 4.26-4.27  | 11      | Fnv64BugFix           | :heavy_check_mark: | :heavy_check_mark: |
-
-| Feature         | Read               | Write |
-|-----------------|--------------------|-------|
-| Compression     | :heavy_check_mark: | :x:   |
-| Encrypted Index | :heavy_check_mark: | :x:   |
-| Encrypted Data  | :heavy_check_mark: | :x:   |
+| UE Version | Version | Version Feature       | Read               | Write                  |
+|------------|---------|-----------------------|--------------------|------------------------|
+|            | 1       | Initial               | :grey_question:    | :grey_question:        |
+| 4.0-4.2    | 2       | NoTimestamps          | :heavy_check_mark: | :heavy_check_mark:     |
+| 4.3-4.15   | 3       | CompressionEncryption | :heavy_check_mark: | :heavy_check_mark:     |
+| 4.16-4.19  | 4       | IndexEncryption       | :heavy_check_mark: | :heavy_check_mark:     |
+| 4.20       | 5       | RelativeChunkOffsets  | :heavy_check_mark: | :heavy_check_mark:     |
+|            | 6       | DeleteRecords         | :grey_question:    | :grey_question:        |
+| 4.21       | 7       | EncryptionKeyGuid     | :heavy_check_mark: | :heavy_check_mark:     |
+| 4.22       | 8A      | FNameBasedCompression | :heavy_check_mark: | :heavy_check_mark:     |
+| 4.23-4.24  | 8B      | FNameBasedCompression | :heavy_check_mark: | :heavy_check_mark:     |
+| 4.25       | 9       | FrozenIndex           | :heavy_check_mark: | :heavy_check_mark:[^1] |
+|            | 10      | PathHashIndex         | :grey_question:    | :grey_question:        |
+| 4.26-4.27  | 11      | Fnv64BugFix           | :heavy_check_mark: | :heavy_check_mark:     |
+
+| Feature         | Read               | Write           |
+|-----------------|--------------------|-----------------|
+| Compression     | :heavy_check_mark: | :wavy_dash:[^2] |
+| Encrypted Index | :heavy_check_mark: | :x:             |
+| Encrypted Data  | :heavy_check_mark: | :x:             |
+
+
+[^1]: Except for paks compressed using frozen index which has significant
+    complexity and only existed for UE 4.25 anyway.
+[^2]: Zlib, Gzip, and Zstd are supported. Not all compression algorithms are
+    available in all games.
 
 Supports reading encrypted (both index and/or data) and compressed paks.
 Writing does not support compression or encryption yet.