diff --git a/src/enc/alpha_enc.c b/src/enc/alpha_enc.c
index 6b1a6f4c..7e8d87f2 100644
--- a/src/enc/alpha_enc.c
+++ b/src/enc/alpha_enc.c
@@ -267,6 +267,7 @@ static int ApplyFiltersAndEncode(const uint8_t* alpha, int width, int height,
                              reduce_levels, effort_level, NULL, &best);
   }
   if (ok) {
+#if !defined(WEBP_DISABLE_STATS)
     if (stats != NULL) {
       stats->lossless_features = best.stats.lossless_features;
       stats->histogram_bits = best.stats.histogram_bits;
@@ -277,6 +278,9 @@ static int ApplyFiltersAndEncode(const uint8_t* alpha, int width, int height,
       stats->lossless_hdr_size = best.stats.lossless_hdr_size;
       stats->lossless_data_size = best.stats.lossless_data_size;
     }
+#else
+    (void)stats;
+#endif
     *output_size = VP8BitWriterSize(&best.bw);
     *output = VP8BitWriterBuf(&best.bw);
   } else {
@@ -342,10 +346,12 @@ static int EncodeAlpha(VP8Encoder* const enc,
     ok = ApplyFiltersAndEncode(quant_alpha, width, height, data_size, method,
                                filter, reduce_levels, effort_level, output,
                                output_size, pic->stats);
+#if !defined(WEBP_DISABLE_STATS)
     if (pic->stats != NULL) {  // need stats?
       pic->stats->coded_size += (int)(*output_size);
       enc->sse_[3] = sse;
     }
+#endif
   }
 
   WebPSafeFree(quant_alpha);
diff --git a/src/enc/frame_enc.c b/src/enc/frame_enc.c
index fb8b136a..c9d919a5 100644
--- a/src/enc/frame_enc.c
+++ b/src/enc/frame_enc.c
@@ -200,11 +200,13 @@ static void SetSegmentProbas(VP8Encoder* const enc) {
     const VP8MBInfo* const mb = &enc->mb_info_[n];
     p[mb->segment_]++;
   }
+#if !defined(WEBP_DISABLE_STATS)
   if (enc->pic_->stats != NULL) {
     for (n = 0; n < NUM_MB_SEGMENTS; ++n) {
       enc->pic_->stats->segment_size[n] = p[n];
     }
   }
+#endif
   if (enc->segment_hdr_.num_segments_ > 1) {
     uint8_t* const probas = enc->proba_.segments_;
     probas[0] = GetProba(p[0] + p[1], p[2] + p[3]);
@@ -452,6 +454,8 @@ static int RecordTokens(VP8EncIterator* const it, const VP8ModeScore* const rd,
 //------------------------------------------------------------------------------
 // ExtraInfo map / Debug function
 
+#if !defined(WEBP_DISABLE_STATS)
+
 #if SEGMENT_VISU
 static void SetBlock(uint8_t* p, int value, int size) {
   int y;
@@ -516,6 +520,20 @@ static void StoreSideInfo(const VP8EncIterator* const it) {
 #endif
 }
 
+#else  // defined(WEBP_DISABLE_STATS)
+static void ResetSSE(VP8Encoder* const enc) {
+  (void)enc;
+}
+static void StoreSideInfo(const VP8EncIterator* const it) {
+  VP8Encoder* const enc = it->enc_;
+  WebPPicture* const pic = enc->pic_;
+  if (pic->extra_info != NULL) {
+    memset(pic->extra_info, 0,
+           enc->mb_w_ * enc->mb_h_ * sizeof(*pic->extra_info));
+  }
+}
+#endif  // !defined(WEBP_DISABLE_STATS)
+
 static double GetPSNR(uint64_t mse, uint64_t size) {
   return (mse > 0 && size > 0) ? 10. * log10(255. * 255. * size / mse) : 99;
 }
@@ -670,6 +688,7 @@ static int PostLoopFinalize(VP8EncIterator* const it, int ok) {
   }
 
   if (ok) {      // All good. Finish up.
+#if !defined(WEBP_DISABLE_STATS)
     if (enc->pic_->stats != NULL) {  // finalize byte counters...
       int i, s;
       for (i = 0; i <= 2; ++i) {
@@ -678,6 +697,7 @@ static int PostLoopFinalize(VP8EncIterator* const it, int ok) {
         }
       }
     }
+#endif
     VP8AdjustFilterStrength(it);     // ...and store filter stats.
   } else {
     // Something bad happened -> need to do some memory cleanup.
diff --git a/src/enc/syntax_enc.c b/src/enc/syntax_enc.c
index 2ae96f49..a9e5a6cf 100644
--- a/src/enc/syntax_enc.c
+++ b/src/enc/syntax_enc.c
@@ -289,11 +289,17 @@ static int GeneratePartition0(VP8Encoder* const enc) {
 
   pos3 = VP8BitWriterPos(bw);
 
+#if !defined(WEBP_DISABLE_STATS)
   if (enc->pic_->stats) {
     enc->pic_->stats->header_bytes[0] = (int)((pos2 - pos1 + 7) >> 3);
     enc->pic_->stats->header_bytes[1] = (int)((pos3 - pos2 + 7) >> 3);
     enc->pic_->stats->alpha_data_size = (int)enc->alpha_data_size_;
   }
+#else
+  (void)pos1;
+  (void)pos2;
+  (void)pos3;
+#endif
   if (bw->error_) {
     return WebPEncodingSetError(enc->pic_, VP8_ENC_ERROR_OUT_OF_MEMORY);
   }
diff --git a/src/enc/vp8l_enc.c b/src/enc/vp8l_enc.c
index a52bf3e5..17a6f273 100644
--- a/src/enc/vp8l_enc.c
+++ b/src/enc/vp8l_enc.c
@@ -1562,7 +1562,9 @@ static int EncodeStreamHook(void* input, void* data2) {
   const CrunchConfig* const crunch_configs = params->crunch_configs_;
   const int num_crunch_configs = params->num_crunch_configs_;
   const int red_and_blue_always_zero = params->red_and_blue_always_zero_;
+#if !defined(WEBP_DISABLE_STATS)
   WebPAuxStats* const stats = params->stats_;
+#endif
   WebPEncodingError err = VP8_ENC_OK;
   const int quality = (int)config->quality;
   const int low_effort = (config->method == 0);
@@ -1704,6 +1706,7 @@ static int EncodeStreamHook(void* input, void* data2) {
       best_size = VP8LBitWriterNumBytes(bw);
       // Store the BitWriter.
       VP8LBitWriterSwap(bw, &bw_best);
+#if !defined(WEBP_DISABLE_STATS)
       // Update the stats.
       if (stats != NULL) {
         stats->lossless_features = 0;
@@ -1719,6 +1722,7 @@ static int EncodeStreamHook(void* input, void* data2) {
         stats->lossless_hdr_size = hdr_size;
         stats->lossless_data_size = data_size;
       }
+#endif
     }
     // Reset the bit writer for the following iteration if any.
     if (num_crunch_configs > 1) VP8LBitWriterReset(&bw_init, bw);
@@ -1828,11 +1832,13 @@ WebPEncodingError VP8LEncodeStream(const WebPConfig* const config,
       err = VP8_ENC_ERROR_OUT_OF_MEMORY;
       goto Error;
     }
+#if !defined(WEBP_DISABLE_STATS)
     // This line is here and not in the param initialization above to remove a
     // Clang static analyzer warning.
     if (picture->stats != NULL) {
       memcpy(&stats_side, picture->stats, sizeof(stats_side));
     }
+#endif
     // This line is only useful to remove a Clang static analyzer warning.
     params_side.err_ = VP8_ENC_OK;
     worker_interface->Launch(&worker_side);
@@ -1851,9 +1857,11 @@ WebPEncodingError VP8LEncodeStream(const WebPConfig* const config,
     }
     if (VP8LBitWriterNumBytes(&bw_side) < VP8LBitWriterNumBytes(bw_main)) {
       VP8LBitWriterSwap(bw_main, &bw_side);
+#if !defined(WEBP_DISABLE_STATS)
       if (picture->stats != NULL) {
         memcpy(picture->stats, &stats_side, sizeof(*picture->stats));
       }
+#endif
     }
   } else {
     if (!ok_main) {
@@ -1945,11 +1953,13 @@ int VP8LEncodeImage(const WebPConfig* const config,
 
   if (!WebPReportProgress(picture, 100, &percent)) goto UserAbort;
 
+#if !defined(WEBP_DISABLE_STATS)
   // Save size.
   if (picture->stats != NULL) {
     picture->stats->coded_size += (int)coded_size;
     picture->stats->lossless_size = (int)coded_size;
   }
+#endif
 
   if (picture->extra_info != NULL) {
     const int mb_w = (width + 15) >> 4;
diff --git a/src/enc/webp_enc.c b/src/enc/webp_enc.c
index f8aa31c2..283cda8e 100644
--- a/src/enc/webp_enc.c
+++ b/src/enc/webp_enc.c
@@ -256,6 +256,7 @@ static int DeleteVP8Encoder(VP8Encoder* enc) {
 
 //------------------------------------------------------------------------------
 
+#if !defined(WEBP_DISABLE_STATS)
 static double GetPSNR(uint64_t err, uint64_t size) {
   return (err > 0 && size > 0) ? 10. * log10(255. * 255. * size / err) : 99.;
 }
@@ -270,8 +271,10 @@ static void FinalizePSNR(const VP8Encoder* const enc) {
   stats->PSNR[3] = (float)GetPSNR(sse[0] + sse[1] + sse[2], size * 3 / 2);
   stats->PSNR[4] = (float)GetPSNR(sse[3], size);
 }
+#endif  // !defined(WEBP_DISABLE_STATS)
 
 static void StoreStats(VP8Encoder* const enc) {
+#if !defined(WEBP_DISABLE_STATS)
   WebPAuxStats* const stats = enc->pic_->stats;
   if (stats != NULL) {
     int i, s;
@@ -288,7 +291,9 @@ static void StoreStats(VP8Encoder* const enc) {
       stats->block_count[i] = enc->block_count_[i];
     }
   }
+#else  // defined(WEBP_DISABLE_STATS)
   WebPReportProgress(enc->pic_, 100, &enc->percent_);  // done!
+#endif  // !defined(WEBP_DISABLE_STATS)
 }
 
 int WebPEncodingSetError(const WebPPicture* const pic,