diff --git a/Dockerfile b/Dockerfile
index ad1e2a41c..e8a00f470 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -69,8 +69,16 @@ RUN --mount=type=bind,source=. \
     set -e
     xx-go --wrap
     export CGO_ENABLED=1
+    # Native libwebp (gen2brain/webp) uses ebitengine/purego reverse callbacks,
+    # which purego does not support on 32-bit ARM or x86 and crash with a SIGSEGV
+    # (issue #5597). Build those arches with the "nodynamic" tag so gen2brain/webp
+    # is WASM-only and never links the purego path. 64-bit arches keep native libwebp.
+    BUILD_TAGS=netgo,sqlite_fts5
+    if [ "$(xx-info arch)" = "arm" ] || [ "$(xx-info arch)" = "386" ]; then
+        BUILD_TAGS=${BUILD_TAGS},nodynamic
+    fi
     # -latomic is required on 32-bit arm (arm/v6, arm/v7) so SQLite's 64-bit atomics resolve.
-    go build -tags=netgo,sqlite_fts5 -ldflags="-w -s \
+    go build -tags=${BUILD_TAGS} -ldflags="-w -s \
         -linkmode=external -extldflags '-latomic' \
         -X github.com/navidrome/navidrome/consts.gitSha=${GIT_SHA} \
         -X github.com/navidrome/navidrome/consts.gitTag=${GIT_TAG}" \
@@ -159,7 +167,6 @@ ENV ND_MUSICFOLDER=/music
 ENV ND_DATAFOLDER=/data
 ENV ND_CONFIGFILE=/data/navidrome.toml
 ENV ND_PORT=4533
-ENV ND_ENABLEWEBPENCODING=true
 RUN touch /.nddockerenv
 
 EXPOSE ${ND_PORT}
diff --git a/core/artwork/reader_resized.go b/core/artwork/reader_resized.go
index 85a19a4c3..08f42f130 100644
--- a/core/artwork/reader_resized.go
+++ b/core/artwork/reader_resized.go
@@ -21,6 +21,12 @@ import (
 
 func init() {
 	conf.AddHook(func() {
+		// gen2brain/webp selects native (purego/libwebp) vs WASM in its own
+		// package init() and exposes the result only via webp.Dynamic(); there is
+		// no runtime way to switch back. On 32-bit ARM/x86 the purego callback path
+		// crashes (issue #5597), so those builds must be compiled with the
+		// "nodynamic" tag (see Dockerfile), which makes webp.Dynamic() report an
+		// error here and forces the safe WASM path.
 		if err := webp.Dynamic(); err != nil {
 			log.Debug("Using WASM WebP encoder/decoder", "reason", err)
 		} else {