diff --git a/pkg/constants/constants.go b/pkg/constants/constants.go
index b07ea8c76..f0df695aa 100644
--- a/pkg/constants/constants.go
+++ b/pkg/constants/constants.go
@@ -19,9 +19,14 @@ limitations under the License.
 // This is a leaf package, without dependencies.
 package constants
 
-// MaxBlobSize is the size of a single blob in Camlistore.
-//
-// TODO: formalize this in the specs. This value of 16 MB is less than
-// App Engine's 32 MB request limit, much more than Venti's limit, and
-// much more than the ~64 KB & 256 KB chunks that the FileWriter make
+// MaxBlobSize is the max size of a single blob in Camlistore, in bytes.
 const MaxBlobSize = 16 << 20
+
+// DefaultMaxResizeMem is the default maximum number of bytes that
+// will be allocated at peak for uncompressed pixel data while
+// generating thumbnails or other resized images.
+//
+// If a single image is larger than the configured size for an
+// ImageHandler, we'll never successfully resize it.  256M is a max
+// image of ~9.5kx9.5k*3.
+const DefaultMaxResizeMem = 256 << 20
diff --git a/pkg/server/image.go b/pkg/server/image.go
index 7b7533e94..398b99e4f 100644
--- a/pkg/server/image.go
+++ b/pkg/server/image.go
@@ -44,17 +44,7 @@ import (
 	_ "camlistore.org/third_party/github.com/nf/cr2"
 )
 
-const (
-	imageDebug = false
-	// This is the default maximum concurrent number of bytes we allocate for
-	// uncompressed pixel data while generating thumbnails.
-	// If a single image is larger than the configured size for an
-	// ImageHandler, we'll never successfully resize it.
-	// 256M is a max image of ~9.5kx9.5k*3.
-	// TODO(wathiede) move to pkg/constants when https://camlistore.org/r/1536
-	// lands.
-	defaultMaxResizeBytes = 256 << 20
-)
+const imageDebug = false
 
 var (
 	imageBytesServedVar  = expvar.NewInt("image-bytes-served")
diff --git a/pkg/server/publish.go b/pkg/server/publish.go
index ee881b267..8600887d0 100644
--- a/pkg/server/publish.go
+++ b/pkg/server/publish.go
@@ -38,7 +38,8 @@ import (
 	"camlistore.org/pkg/auth"
 	"camlistore.org/pkg/blob"
 	"camlistore.org/pkg/blobserver"
-	"camlistore.org/pkg/client" // just for NewUploadHandleFromString.  move elsewhere?
+	"camlistore.org/pkg/client"
+	"camlistore.org/pkg/constants" // just for NewUploadHandleFromString.  move elsewhere?
 	"camlistore.org/pkg/fileembed"
 	"camlistore.org/pkg/httputil"
 	"camlistore.org/pkg/jsonconfig"
@@ -101,7 +102,7 @@ func newPublishFromConfig(ld blobserver.Loader, conf jsonconfig.Obj) (h http.Han
 	bootstrapSignRoot := conf.OptionalString("devBootstrapPermanodeUsing", "")
 	rootNode := conf.OptionalList("rootPermanode")
 	ph.sourceRoot = conf.OptionalString("sourceRoot", "")
-	ph.resizeSem = syncutil.NewSem(int64(conf.OptionalInt("maxResizeBytes", defaultMaxResizeBytes)))
+	ph.resizeSem = syncutil.NewSem(int64(conf.OptionalInt("maxResizeBytes", constants.DefaultMaxResizeMem)))
 	if err = conf.Validate(); err != nil {
 		return
 	}
diff --git a/pkg/server/ui.go b/pkg/server/ui.go
index 1026cbab1..7f0cef13d 100644
--- a/pkg/server/ui.go
+++ b/pkg/server/ui.go
@@ -31,6 +31,7 @@ import (
 
 	"camlistore.org/pkg/blob"
 	"camlistore.org/pkg/blobserver"
+	"camlistore.org/pkg/constants"
 	"camlistore.org/pkg/fileembed"
 	"camlistore.org/pkg/httputil"
 	"camlistore.org/pkg/jsonconfig"
@@ -120,7 +121,7 @@ func uiFromConfig(ld blobserver.Loader, conf jsonconfig.Obj) (h http.Handler, er
 		JSONSignRoot: conf.OptionalString("jsonSignRoot", ""),
 		sourceRoot:   conf.OptionalString("sourceRoot", ""),
 		resizeSem: syncutil.NewSem(int64(conf.OptionalInt("maxResizeBytes",
-			defaultMaxResizeBytes))),
+			constants.DefaultMaxResizeMem))),
 	}
 	pubRoots := conf.OptionalList("publishRoots")
 	cachePrefix := conf.OptionalString("cache", "")