diff --git a/docling-core/src/main/java/ai/docling/core/DoclingDocument.java b/docling-core/src/main/java/ai/docling/core/DoclingDocument.java
index 450fe963..9af6279a 100644
--- a/docling-core/src/main/java/ai/docling/core/DoclingDocument.java
+++ b/docling-core/src/main/java/ai/docling/core/DoclingDocument.java
@@ -311,10 +311,15 @@ public static class EntityMention {
     private String createdBy;
 
     @JsonProperty("text")
+    @Nullable
+    @com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson2Deserializer.class)
+    @tools.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson3Deserializer.class)
     private String text;
 
     @JsonProperty("orig")
     @Nullable
+    @com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson2Deserializer.class)
+    @tools.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson3Deserializer.class)
     private String orig;
 
     @JsonProperty("label")
@@ -456,6 +461,9 @@ public static class SummaryMetaField {
     private String createdBy;
 
     @JsonProperty("text")
+    @Nullable
+    @com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson2Deserializer.class)
+    @tools.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson3Deserializer.class)
     private String text;
 
     @tools.jackson.databind.annotation.JsonPOJOBuilder(withPrefix = "")
@@ -641,9 +649,15 @@ public static final class TitleItem implements BaseTextItem {
     private List<ProvenanceItem> prov;
 
     @JsonProperty("orig")
+    @Nullable
+    @com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson2Deserializer.class)
+    @tools.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson3Deserializer.class)
     private String orig;
 
     @JsonProperty("text")
+    @Nullable
+    @com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson2Deserializer.class)
+    @tools.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson3Deserializer.class)
     private String text;
 
     @JsonProperty("formatting")
@@ -703,9 +717,15 @@ public static final class SectionHeaderItem implements BaseTextItem {
     private List<ProvenanceItem> prov;
 
     @JsonProperty("orig")
+    @Nullable
+    @com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson2Deserializer.class)
+    @tools.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson3Deserializer.class)
     private String orig;
 
     @JsonProperty("text")
+    @Nullable
+    @com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson2Deserializer.class)
+    @tools.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson3Deserializer.class)
     private String text;
 
     @JsonProperty("formatting")
@@ -768,9 +788,15 @@ public static final class FieldHeadingItem implements BaseTextItem {
     private List<ProvenanceItem> prov;
 
     @JsonProperty("orig")
+    @Nullable
+    @com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson2Deserializer.class)
+    @tools.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson3Deserializer.class)
     private String orig;
 
     @JsonProperty("text")
+    @Nullable
+    @com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson2Deserializer.class)
+    @tools.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson3Deserializer.class)
     private String text;
 
     @JsonProperty("formatting")
@@ -833,9 +859,15 @@ public static final class ListItem implements BaseTextItem {
     private List<ProvenanceItem> prov;
 
     @JsonProperty("orig")
+    @Nullable
+    @com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson2Deserializer.class)
+    @tools.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson3Deserializer.class)
     private String orig;
 
     @JsonProperty("text")
+    @Nullable
+    @com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson2Deserializer.class)
+    @tools.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson3Deserializer.class)
     private String text;
 
     @JsonProperty("formatting")
@@ -902,9 +934,15 @@ public static final class CodeItem implements BaseTextItem {
     private List<ProvenanceItem> prov;
 
     @JsonProperty("orig")
+    @Nullable
+    @com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson2Deserializer.class)
+    @tools.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson3Deserializer.class)
     private String orig;
 
     @JsonProperty("text")
+    @Nullable
+    @com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson2Deserializer.class)
+    @tools.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson3Deserializer.class)
     private String text;
 
     @JsonProperty("formatting")
@@ -987,9 +1025,15 @@ public static final class FormulaItem implements BaseTextItem {
     private List<ProvenanceItem> prov;
 
     @JsonProperty("orig")
+    @Nullable
+    @com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson2Deserializer.class)
+    @tools.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson3Deserializer.class)
     private String orig;
 
     @JsonProperty("text")
+    @Nullable
+    @com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson2Deserializer.class)
+    @tools.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson3Deserializer.class)
     private String text;
 
     @JsonProperty("formatting")
@@ -1049,9 +1093,15 @@ public static final class TextItem implements BaseTextItem {
     private List<ProvenanceItem> prov;
 
     @JsonProperty("orig")
+    @Nullable
+    @com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson2Deserializer.class)
+    @tools.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson3Deserializer.class)
     private String orig;
 
     @JsonProperty("text")
+    @Nullable
+    @com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson2Deserializer.class)
+    @tools.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson3Deserializer.class)
     private String text;
 
     @JsonProperty("formatting")
@@ -1111,9 +1161,15 @@ public static final class FieldValueItem implements BaseTextItem {
     private List<ProvenanceItem> prov;
 
     @JsonProperty("orig")
+    @Nullable
+    @com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson2Deserializer.class)
+    @tools.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson3Deserializer.class)
     private String orig;
 
     @JsonProperty("text")
+    @Nullable
+    @com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson2Deserializer.class)
+    @tools.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson3Deserializer.class)
     private String text;
 
     @JsonProperty("formatting")
@@ -1283,6 +1339,9 @@ public static class CodeMetaField {
     private String createdBy;
 
     @JsonProperty("text")
+    @Nullable
+    @com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson2Deserializer.class)
+    @tools.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson3Deserializer.class)
     private String text;
 
     @JsonProperty("language")
@@ -1309,6 +1368,9 @@ public static class DescriptionMetaField {
     private String createdBy;
     
     @JsonProperty("text")
+    @Nullable
+    @com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson2Deserializer.class)
+    @tools.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson3Deserializer.class)
     private String text;
 
     @tools.jackson.databind.annotation.JsonPOJOBuilder(withPrefix = "")
@@ -1660,6 +1722,9 @@ public static class TableCell {
     private Integer endColOffsetIdx;
     
     @JsonProperty("text")
+    @Nullable
+    @com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson2Deserializer.class)
+    @tools.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson3Deserializer.class)
     private String text;
     
     @JsonProperty("column_header")
@@ -1794,9 +1859,15 @@ public static class GraphCell {
     private Integer cellId;
     
     @JsonProperty("text")
+    @Nullable
+    @com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson2Deserializer.class)
+    @tools.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson3Deserializer.class)
     private String text;
     
     @JsonProperty("orig")
+    @Nullable
+    @com.fasterxml.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson2Deserializer.class)
+    @tools.jackson.databind.annotation.JsonDeserialize(using = DoclingDocument.EmptyStringToNullJackson3Deserializer.class)
     private String orig;
     
     @JsonProperty("prov")
@@ -2035,6 +2106,45 @@ public static class PageItem {
     public static class Builder { }
   }
 
+
+  /**
+   * Jackson 2 deserializer that maps an empty string value to {@code null}
+   * for {@code text} and {@code orig} fields.
+   */
+  static final class EmptyStringToNullJackson2Deserializer
+      extends com.fasterxml.jackson.databind.deser.std.StdDeserializer<String> {
+
+    EmptyStringToNullJackson2Deserializer() {
+      super(String.class);
+    }
+
+    @Override
+    public String deserialize(com.fasterxml.jackson.core.JsonParser p,
+        com.fasterxml.jackson.databind.DeserializationContext ctx) throws java.io.IOException {
+      String value = p.getText();
+      return (value == null || value.isEmpty()) ? null : value;
+    }
+  }
+
+  /**
+   * Jackson 3 deserializer that maps an empty string value to {@code null}
+   * for {@code text} and {@code orig} fields.
+   */
+  static final class EmptyStringToNullJackson3Deserializer
+      extends tools.jackson.databind.deser.std.StdDeserializer<String> {
+
+    EmptyStringToNullJackson3Deserializer() {
+      super(String.class);
+    }
+
+    @Override
+    public String deserialize(tools.jackson.core.JsonParser p,
+        tools.jackson.databind.DeserializationContext ctx) throws tools.jackson.core.JacksonException {
+      String value = p.getText();
+      return (value == null || value.isEmpty()) ? null : value;
+    }
+  }
+
   @tools.jackson.databind.annotation.JsonPOJOBuilder(withPrefix = "")
   public static class Builder { }
 
diff --git a/docling-core/src/test/java/ai/docling/core/DoclingDocumentTests.java b/docling-core/src/test/java/ai/docling/core/DoclingDocumentTests.java
index 124e94ed..d073e305 100644
--- a/docling-core/src/test/java/ai/docling/core/DoclingDocumentTests.java
+++ b/docling-core/src/test/java/ai/docling/core/DoclingDocumentTests.java
@@ -554,4 +554,73 @@ void shouldRejectNonTrackKindOnTrackSource() {
     assertThat(source.getKind()).isEqualTo("track");
   }
 
+  @Test
+  void shouldKeepEmptyStringTextAndOrigViaBuilder() {
+    DoclingDocument.FormulaItem item =
+        DoclingDocument.FormulaItem.builder()
+            .selfRef("#/texts/0")
+            .contentLayer(DoclingDocument.ContentLayer.BODY)
+            .label(DocItemLabel.FORMULA)
+            .orig("")
+            .text("")
+            .build();
+
+    // Builder does not normalize empty strings; normalization happens via Jackson deserialization.
+    // Empty strings are still omitted from serialization by @JsonInclude(NON_EMPTY).
+    assertThat(item.getText()).isEmpty();
+    assertThat(item.getOrig()).isEmpty();
+  }
+
+  @Test
+  void shouldOmitEmptyStringTextAndOrigFromSerialization() throws Exception {
+    ObjectMapper mapper = new ObjectMapper();
+
+    DoclingDocument document =
+        DoclingDocument.builder()
+            .name("formula-document")
+            .text(
+                DoclingDocument.FormulaItem.builder()
+                    .selfRef("#/texts/0")
+                    .contentLayer(DoclingDocument.ContentLayer.BODY)
+                    .label(DocItemLabel.FORMULA)
+                    .orig("")
+                    .text("")
+                    .build())
+            .build();
+
+    String json = mapper.writeValueAsString(document);
+
+    assertThat(json).doesNotContain("\"text\"");
+    assertThat(json).doesNotContain("\"orig\"");
+  }
+
+  @Test
+  void shouldDeserializeEmptyStringTextAndOrigAsNull() throws Exception {
+    ObjectMapper mapper = new ObjectMapper();
+    String json =
+        """
+        {
+          "name": "formula-document",
+          "texts": [
+            {
+              "self_ref": "#/texts/0",
+              "content_layer": "body",
+              "label": "formula",
+              "orig": "",
+              "text": ""
+            }
+          ]
+        }
+        """;
+
+    DoclingDocument document = mapper.readValue(json, DoclingDocument.class);
+
+    assertThat(document.getTexts()).hasSize(1);
+    assertThat(document.getTexts().get(0)).isInstanceOf(DoclingDocument.FormulaItem.class);
+    DoclingDocument.FormulaItem formulaItem =
+        (DoclingDocument.FormulaItem) document.getTexts().get(0);
+    assertThat(formulaItem.getText()).isNull();
+    assertThat(formulaItem.getOrig()).isNull();
+  }
+
 }