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docs/snippets/wasm/advanced/chunking_config.md

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+```typescript title="WASM - Fixed-Size Chunks"
+import init, { extractBytes } from "kreuzberg-wasm";
+
+await init();
+
+const config = {
+  chunking: {
+    maxChars: 2000,
+    chunkOverlap: 400,
+    trim: true,
+  },
+};
+
+const bytes = new Uint8Array(buffer);
+const result = await extractBytes(bytes, "application/pdf", config);
+
+result.chunks?.forEach((chunk, idx) => {
+  console.log(`Chunk ${chunk.metadata?.chunkIndex}/${chunk.metadata?.totalChunks}`);
+  console.log(`  Position: ${chunk.metadata?.byteStart}-${chunk.metadata?.byteEnd}`);
+  console.log(`  Content: "${chunk.content.substring(0, 50)}..."`);
+});
+```
+
+```typescript title="WASM - Markdown-Aware Chunking"
+import init, { extractBytes } from "kreuzberg-wasm";
+
+await init();
+
+const config = {
+  chunking: {
+    chunkerType: "markdown",
+    maxChars: 1500,
+    prependHeadingContext: true,
+  },
+};
+
+const bytes = new Uint8Array(buffer);
+const result = await extractBytes(bytes, "text/markdown", config);
+
+result.chunks?.forEach((chunk) => {
+  // Content already includes heading context prepended
+  console.log(chunk.content.substring(0, 80));
+  console.log(
+    `  Heading path: ${chunk.metadata?.headingContext?.headings?.map((h) => `${"#".repeat(h.level)} ${h.text}`).join(" > ")}`,
+  );
+});
+```
+
+```typescript title="WASM - Semantic Chunking with Topic Threshold"
+import init, { extractBytes } from "kreuzberg-wasm";
+
+await init();
+
+const config = {
+  chunking: {
+    chunkerType: "semantic",
+    maxChars: 1000,
+    topicThreshold: 0.5, // Boundary detection at 50% topic change
+    chunkOverlap: 100,
+  },
+};
+
+const bytes = new Uint8Array(buffer);
+const result = await extractBytes(bytes, "text/markdown", config);
+
+console.log(`Generated ${result.chunks?.length} semantic chunks`);
+result.chunks?.forEach((chunk) => {
+  console.log(`Chunk ${chunk.metadata?.chunkIndex}: ${chunk.content.length} chars`);
+});
+```