diff --git a/packages/coding-agent/CHANGELOG.md b/packages/coding-agent/CHANGELOG.md
index 001565ba..ff1a8edc 100644
--- a/packages/coding-agent/CHANGELOG.md
+++ b/packages/coding-agent/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## [Unreleased]
 
+### Added
+
+- **HTML export line numbers**: Read tool calls in HTML exports now display line number ranges (e.g., `file.txt:10-20`) when offset/limit parameters are used, matching the TUI display format. Line numbers appear in yellow color for better visibility. ([#166](https://github.com/badlogic/pi-mono/issues/166))
+
 ## [0.18.1] - 2025-12-10
 
 ### Added
diff --git a/packages/coding-agent/src/core/export-html.ts b/packages/coding-agent/src/core/export-html.ts
index bc628faf..15078536 100644
--- a/packages/coding-agent/src/core/export-html.ts
+++ b/packages/coding-agent/src/core/export-html.ts
@@ -350,7 +350,18 @@ function formatToolExecution(
 
 		case "read": {
 			const path = shortenPath((args?.file_path as string) || (args?.path as string) || "");
-			html = `<div class="tool-header"><span class="tool-name">read</span> <span class="tool-path">${escapeHtml(path || "...")}</span></div>`;
+			const offset = args?.offset as number | undefined;
+			const limit = args?.limit as number | undefined;
+
+			// Build path display with offset/limit suffix (in yellow color if offset/limit used)
+			let pathHtml = escapeHtml(path || "...");
+			if (offset !== undefined || limit !== undefined) {
+				const startLine = offset ?? 1;
+				const endLine = limit !== undefined ? startLine + limit - 1 : "";
+				pathHtml += `<span class="line-numbers" style="color: ${COLORS.yellow}">:${startLine}${endLine ? `-${endLine}` : ""}</span>`;
+			}
+
+			html = `<div class="tool-header"><span class="tool-name">read</span> <span class="tool-path">${pathHtml}</span></div>`;
 			if (result) {
 				const output = getTextOutput();
 				if (output) {