diff --git a/public/src/content.js b/public/src/content.js
index e74f2b1..18997b7 100644
--- a/public/src/content.js
+++ b/public/src/content.js
@@ -299,11 +299,10 @@ function collapseSidebarDebris(text) {
 // No summarization: content is real, just structurally compressed.
 // Stages run in order of aggressiveness, stopping when content fits.
 export function fitPageContent(pageContent, maxModelTokens) {
-	// Reserve tokens for everything except page content:
-	// system prompt ~300, computed intel ~200, analysis ~300,
-	// wrapper text ~100, chat history ~8000, output ~4000, safety ~2000
-	const overhead = 15000;
-	const maxPageTokens = Math.max(0, maxModelTokens - overhead);
+	// Reserve 20% of context for overhead (system prompt, chat history, output)
+	// but never more than 15k and always leave at least 60% for page content
+	const overhead = Math.min(15000, Math.floor(maxModelTokens * 0.2));
+	const maxPageTokens = Math.max(Math.floor(maxModelTokens * 0.6), maxModelTokens - overhead);
 	const originalTokens = estimateTokens(pageContent);
 
 	if (originalTokens <= maxPageTokens) {