diff --git a/services/clsi/app/js/CompileManager.js b/services/clsi/app/js/CompileManager.js
index 0393ac9e56..507bdf1cfe 100644
--- a/services/clsi/app/js/CompileManager.js
+++ b/services/clsi/app/js/CompileManager.js
@@ -829,6 +829,7 @@ function _emitMetrics(request, status, stats, timings) {
     stop_on_first_error: request.stopOnFirstError ? 'true' : 'false',
     passes,
     type: request.syncType,
+    png2pdf: request.png2pdf ? 'true' : 'false',
   })
 
   if (timings.sync != null) {
diff --git a/services/clsi/app/js/LatexMetrics.js b/services/clsi/app/js/LatexMetrics.js
index 1783064324..182b124ac8 100644
--- a/services/clsi/app/js/LatexMetrics.js
+++ b/services/clsi/app/js/LatexMetrics.js
@@ -1,3 +1,5 @@
+import Path from 'node:path'
+
 /**
  * Converts a time string in seconds to an integer number of milliseconds.
  *
@@ -128,8 +130,11 @@ const LATEX_MK_METRICS_STDERR = [
         let type = match[1]
         const timeMs = parseInt(match[2], 10)
         const filename = match[3]
+        const extension = Path.extname(filename).toLowerCase()
 
-        if (type === 'PNG') {
+        if (type === 'PDF' && extension === '.png') {
+          type = `PNG-png2pdf`
+        } else if (type === 'PNG') {
           const pngCategory = pngCategoriesByFile.get(filename)
           if (pngCategory != null) {
             type = `PNG-${pngCategory}`
diff --git a/services/clsi/app/js/Metrics.js b/services/clsi/app/js/Metrics.js
index 6ec402a6a0..f77c944dd0 100644
--- a/services/clsi/app/js/Metrics.js
+++ b/services/clsi/app/js/Metrics.js
@@ -18,6 +18,7 @@ const compilesTotal = new prom.Counter({
     'stop_on_first_error',
     'passes',
     'type',
+    'png2pdf',
   ],
 })
 
diff --git a/services/clsi/test/unit/js/LatexMetrics.test.js b/services/clsi/test/unit/js/LatexMetrics.test.js
index a63fff3339..0b4d334114 100644
--- a/services/clsi/test/unit/js/LatexMetrics.test.js
+++ b/services/clsi/test/unit/js/LatexMetrics.test.js
@@ -3,7 +3,7 @@ import path from 'node:path'
 import { expect, describe, beforeEach, it } from 'vitest'
 import LatexMetrics from '../../../app/js/LatexMetrics.js'
 
-const { addLatexFdbMetrics } = LatexMetrics
+const { addLatexFdbMetrics, addLatexMkMetrics } = LatexMetrics
 
 describe('LatexMetrics', function () {
   describe('addLatexFdbMetrics', function () {
@@ -111,4 +111,115 @@ describe('LatexMetrics', function () {
       })
     })
   })
+
+  describe('addLatexMkMetrics', function () {
+    beforeEach(function (ctx) {
+      ctx.stats = {}
+      Object.defineProperty(ctx.stats, 'latexmk', {
+        value: {},
+        enumerable: false,
+      })
+    })
+
+    describe('latexmk-img-times', function () {
+      it('should parse image timing information from stderr', function (ctx) {
+        const output = {
+          stderr:
+            'Image written (PNG, 100 ms): output/image1.png\n' +
+            'Image written (JPG, 50 ms): output/image2.jpg\n',
+        }
+        addLatexMkMetrics(output, ctx.stats)
+
+        expect(ctx.stats.latexmk['latexmk-img-times']).to.deep.equal([
+          { type: 'PNG', time_ms: 100 },
+          { type: 'JPG', time_ms: 50 },
+        ])
+      })
+
+      it('should convert PDF type with .png extension to PNG-png2pdf', function (ctx) {
+        const output = {
+          stderr: 'Image written (PDF, 150 ms): image.png\n',
+        }
+        addLatexMkMetrics(output, ctx.stats)
+
+        expect(ctx.stats.latexmk['latexmk-img-times']).to.deep.equal([
+          { type: 'PNG-png2pdf', time_ms: 150 },
+        ])
+      })
+
+      it('should handle uppercase .PNG extension', function (ctx) {
+        const output = {
+          stderr: 'Image written (PDF, 200 ms): image.PNG\n',
+        }
+        addLatexMkMetrics(output, ctx.stats)
+
+        expect(ctx.stats.latexmk['latexmk-img-times']).to.deep.equal([
+          { type: 'PNG-png2pdf', time_ms: 200 },
+        ])
+      })
+
+      it('should keep PDF type for non-png extensions', function (ctx) {
+        const output = {
+          stderr:
+            'Image written (PDF, 100 ms): document.pdf\n' +
+            'Image written (PDF, 80 ms): image.jpg\n',
+        }
+        addLatexMkMetrics(output, ctx.stats)
+
+        expect(ctx.stats.latexmk['latexmk-img-times']).to.deep.equal([
+          { type: 'PDF', time_ms: 180 },
+        ])
+      })
+
+      it('should accumulate timing for the same type', function (ctx) {
+        const output = {
+          stderr:
+            'Image written (PDF, 100 ms): image1.png\n' +
+            'Image written (PDF, 150 ms): image2.png\n' +
+            'Image written (PNG, 50 ms): image3.png\n',
+        }
+        addLatexMkMetrics(output, ctx.stats)
+
+        const result = ctx.stats.latexmk['latexmk-img-times'].sort((a, b) =>
+          a.type.localeCompare(b.type)
+        )
+        expect(result).to.deep.equal([
+          { type: 'PNG', time_ms: 50 },
+          { type: 'PNG-png2pdf', time_ms: 250 },
+        ])
+      })
+
+      it('should handle PNG with category from PNG copy skipped', function (ctx) {
+        const output = {
+          stderr:
+            'PNG copy skipped (alpha): image1.png\n' +
+            'Image written (PNG, 75 ms): image1.png\n',
+        }
+        addLatexMkMetrics(output, ctx.stats)
+
+        expect(ctx.stats.latexmk['latexmk-img-times']).to.deep.equal([
+          { type: 'PNG-alpha', time_ms: 75 },
+        ])
+      })
+
+      it('should mix PDF-to-png2pdf and PNG types', function (ctx) {
+        const output = {
+          stderr:
+            'Image written (PDF, 100 ms): converted.png\n' +
+            'Image written (PNG, 50 ms): native.png\n' +
+            'Image written (JPG, 30 ms): photo.jpg\n',
+        }
+        addLatexMkMetrics(output, ctx.stats)
+
+        const result = ctx.stats.latexmk['latexmk-img-times'].sort((a, b) =>
+          a.type.localeCompare(b.type)
+        )
+        expect(result).to.deep.equal([
+          { type: 'JPG', time_ms: 30 },
+          { type: 'PNG', time_ms: 50 },
+          { type: 'PNG-png2pdf', time_ms: 100 },
+        ])
+      })
+    })
+  })
 })