diff --git a/lib/src/models/rules/delete.dart b/lib/src/models/rules/delete.dart
index 78b94f6b..2f36f76d 100644
--- a/lib/src/models/rules/delete.dart
+++ b/lib/src/models/rules/delete.dart
@@ -1,6 +1,7 @@
 import 'package:meta/meta.dart' show immutable;
 
 import '../../../quill_delta.dart';
+import '../../models/documents/document.dart';
 import '../documents/attribute.dart';
 import '../documents/nodes/embeddable.dart';
 import 'rule.dart';
@@ -26,9 +27,9 @@ class EnsureLastLineBreakDeleteRule extends DeleteRule {
   const EnsureLastLineBreakDeleteRule();
 
   @override
-  Delta? applyRule(Delta document, int index,
+  Delta? applyRule(Document document, int index,
       {int? len, Object? data, Attribute? attribute}) {
-    final itr = DeltaIterator(document)..skip(index + len!);
+    final itr = DeltaIterator(document.toDelta())..skip(index + len!);
 
     return Delta()
       ..retain(index)
@@ -43,9 +44,9 @@ class CatchAllDeleteRule extends DeleteRule {
   const CatchAllDeleteRule();
 
   @override
-  Delta applyRule(Delta document, int index,
+  Delta applyRule(Document document, int index,
       {int? len, Object? data, Attribute? attribute}) {
-    final itr = DeltaIterator(document)..skip(index + len!);
+    final itr = DeltaIterator(document.toDelta())..skip(index + len!);
 
     return Delta()
       ..retain(index)
@@ -64,9 +65,9 @@ class PreserveLineStyleOnMergeRule extends DeleteRule {
   const PreserveLineStyleOnMergeRule();
 
   @override
-  Delta? applyRule(Delta document, int index,
+  Delta? applyRule(Document document, int index,
       {int? len, Object? data, Attribute? attribute}) {
-    final itr = DeltaIterator(document)..skip(index);
+    final itr = DeltaIterator(document.toDelta())..skip(index);
     var op = itr.next(1);
     if (op.data != '\n') {
       return null;
@@ -121,9 +122,9 @@ class EnsureEmbedLineRule extends DeleteRule {
   const EnsureEmbedLineRule();
 
   @override
-  Delta? applyRule(Delta document, int index,
+  Delta? applyRule(Document document, int index,
       {int? len, Object? data, Attribute? attribute}) {
-    final itr = DeltaIterator(document);
+    final itr = DeltaIterator(document.toDelta());
 
     var op = itr.skip(index);
     final opAfter = itr.skip(index + 1);
diff --git a/lib/src/models/rules/format.dart b/lib/src/models/rules/format.dart
index 7f731e7a..f1e1b804 100644
--- a/lib/src/models/rules/format.dart
+++ b/lib/src/models/rules/format.dart
@@ -1,6 +1,7 @@
 import 'package:meta/meta.dart' show immutable;
 
 import '../../../quill_delta.dart';
+import '../../models/documents/document.dart';
 import '../documents/attribute.dart';
 import 'rule.dart';
 
@@ -28,7 +29,7 @@ class ResolveLineFormatRule extends FormatRule {
 
   @override
   Delta? applyRule(
-    Delta document,
+    Document document,
     int index, {
     int? len,
     Object? data,
@@ -41,7 +42,7 @@ class ResolveLineFormatRule extends FormatRule {
     // Apply line styles to all newline characters within range of this
     // retain operation.
     var result = Delta()..retain(index);
-    final itr = DeltaIterator(document)..skip(index);
+    final itr = DeltaIterator(document.toDelta())..skip(index);
     Operation op;
     for (var cur = 0; cur < len! && itr.hasNext; cur += op.length!) {
       op = itr.next(len - cur);
@@ -119,7 +120,7 @@ class FormatLinkAtCaretPositionRule extends FormatRule {
 
   @override
   Delta? applyRule(
-    Delta document,
+    Document document,
     int index, {
     int? len,
     Object? data,
@@ -130,7 +131,7 @@ class FormatLinkAtCaretPositionRule extends FormatRule {
     }
 
     final delta = Delta();
-    final itr = DeltaIterator(document);
+    final itr = DeltaIterator(document.toDelta());
     final before = itr.skip(index), after = itr.next();
     int? beg = index, retain = 0;
     if (before != null && before.hasAttribute(attribute.key)) {
@@ -159,7 +160,7 @@ class ResolveInlineFormatRule extends FormatRule {
 
   @override
   Delta? applyRule(
-    Delta document,
+    Document document,
     int index, {
     int? len,
     Object? data,
@@ -170,7 +171,7 @@ class ResolveInlineFormatRule extends FormatRule {
     }
 
     final delta = Delta()..retain(index);
-    final itr = DeltaIterator(document)..skip(index);
+    final itr = DeltaIterator(document.toDelta())..skip(index);
 
     Operation op;
     for (var cur = 0; cur < len! && itr.hasNext; cur += op.length!) {
@@ -205,7 +206,7 @@ class ResolveImageFormatRule extends FormatRule {
 
   @override
   Delta? applyRule(
-    Delta document,
+    Document document,
     int index, {
     int? len,
     Object? data,
diff --git a/lib/src/models/rules/insert.dart b/lib/src/models/rules/insert.dart
index b97058bc..9f6bf723 100644
--- a/lib/src/models/rules/insert.dart
+++ b/lib/src/models/rules/insert.dart
@@ -33,7 +33,7 @@ class PreserveLineStyleOnSplitRule extends InsertRule {
 
   @override
   Delta? applyRule(
-    Delta document,
+    Document document,
     int index, {
     int? len,
     Object? data,
@@ -42,8 +42,7 @@ class PreserveLineStyleOnSplitRule extends InsertRule {
     if (data is! String || data != '\n') {
       return null;
     }
-
-    final itr = DeltaIterator(document);
+    final itr = DeltaIterator(document.toDelta());
     final before = itr.skip(index);
     if (before == null) {
       return null;
@@ -84,7 +83,7 @@ class PreserveBlockStyleOnInsertRule extends InsertRule {
 
   @override
   Delta? applyRule(
-    Delta document,
+    Document document,
     int index, {
     int? len,
     Object? data,
@@ -94,8 +93,7 @@ class PreserveBlockStyleOnInsertRule extends InsertRule {
       // Only interested in text containing at least one newline character.
       return null;
     }
-
-    final itr = DeltaIterator(document)..skip(index);
+    final itr = DeltaIterator(document.toDelta())..skip(index);
 
     // Look for the next newline.
     final nextNewLine = _getNextNewLine(itr);
@@ -171,7 +169,7 @@ class AutoExitBlockRule extends InsertRule {
 
   @override
   Delta? applyRule(
-    Delta document,
+    Document document,
     int index, {
     int? len,
     Object? data,
@@ -181,7 +179,7 @@ class AutoExitBlockRule extends InsertRule {
       return null;
     }
 
-    final itr = DeltaIterator(document);
+    final itr = DeltaIterator(document.toDelta());
     final prev = itr.skip(index), cur = itr.next();
     final blockStyle = Style.fromJson(cur.attributes).getBlockExceptHeader();
     // We are not in a block, ignore.
@@ -241,7 +239,7 @@ class ResetLineFormatOnNewLineRule extends InsertRule {
 
   @override
   Delta? applyRule(
-    Delta document,
+    Document document,
     int index, {
     int? len,
     Object? data,
@@ -251,7 +249,7 @@ class ResetLineFormatOnNewLineRule extends InsertRule {
       return null;
     }
 
-    final itr = DeltaIterator(document)..skip(index);
+    final itr = DeltaIterator(document.toDelta())..skip(index);
     final cur = itr.next();
     if (cur.data is! String || !(cur.data as String).startsWith('\n')) {
       return null;
@@ -278,7 +276,7 @@ class InsertEmbedsRule extends InsertRule {
 
   @override
   Delta? applyRule(
-    Delta document,
+    Document document,
     int index, {
     int? len,
     Object? data,
@@ -295,7 +293,7 @@ class InsertEmbedsRule extends InsertRule {
     }
 
     final delta = Delta()..retain(index + (len ?? 0));
-    final itr = DeltaIterator(document);
+    final itr = DeltaIterator(document.toDelta());
     final prev = itr.skip(index), cur = itr.next();
 
     final textBefore = prev?.data is String ? prev!.data as String? : '';
@@ -386,7 +384,7 @@ class AutoFormatMultipleLinksRule extends InsertRule {
 
   @override
   Delta? applyRule(
-    Delta document,
+    Document document,
     int index, {
     int? len,
     Object? data,
@@ -397,7 +395,7 @@ class AutoFormatMultipleLinksRule extends InsertRule {
     if (data is! String) return null;
 
     // Get current text.
-    final entireText = Document.fromDelta(document).toPlainText();
+    final entireText = document.toPlainText();
 
     // Get word before insertion.
     final leftWordPart = entireText
@@ -502,7 +500,7 @@ class AutoFormatLinksRule extends InsertRule {
 
   @override
   Delta? applyRule(
-    Delta document,
+    Document document,
     int index, {
     int? len,
     Object? data,
@@ -512,7 +510,7 @@ class AutoFormatLinksRule extends InsertRule {
       return null;
     }
 
-    final itr = DeltaIterator(document);
+    final itr = DeltaIterator(document.toDelta());
     final prev = itr.skip(index);
     if (prev == null || prev.data is! String) {
       return null;
@@ -548,7 +546,7 @@ class PreserveInlineStylesRule extends InsertRule {
 
   @override
   Delta? applyRule(
-    Delta document,
+    Document document,
     int index, {
     int? len,
     Object? data,
@@ -558,7 +556,7 @@ class PreserveInlineStylesRule extends InsertRule {
       return null;
     }
 
-    final itr = DeltaIterator(document);
+    final itr = DeltaIterator(document.toDelta());
     var prev = itr.skip(len == 0 ? index : index + 1);
 
     if (prev == null || prev.data is! String) return null;
@@ -609,7 +607,7 @@ class CatchAllInsertRule extends InsertRule {
 
   @override
   Delta applyRule(
-    Delta document,
+    Document document,
     int index, {
     int? len,
     Object? data,
diff --git a/lib/src/models/rules/rule.dart b/lib/src/models/rules/rule.dart
index d7132b3e..fd319bb5 100644
--- a/lib/src/models/rules/rule.dart
+++ b/lib/src/models/rules/rule.dart
@@ -14,7 +14,7 @@ abstract class Rule {
   const Rule();
 
   Delta? apply(
-    Delta document,
+    Document document,
     int index, {
     int? len,
     Object? data,
@@ -35,7 +35,7 @@ abstract class Rule {
   /// Applies heuristic rule to an operation on a [document] and returns
   /// resulting [Delta].
   Delta? applyRule(
-    Delta document,
+    Document document,
     int index, {
     int? len,
     Object? data,
@@ -85,13 +85,12 @@ class Rules {
     Object? data,
     Attribute? attribute,
   }) {
-    final delta = document.toDelta();
     for (final rule in _customRules + _rules) {
       if (rule.type != ruleType) {
         continue;
       }
       try {
-        final result = rule.apply(delta, index,
+        final result = rule.apply(document, index,
             len: len, data: data, attribute: attribute);
         if (result != null) {
           return result..trim();