diff --git a/frontends/amiga/plotters.c b/frontends/amiga/plotters.c
index dc2c16724..7c5df4678 100644
--- a/frontends/amiga/plotters.c
+++ b/frontends/amiga/plotters.c
@@ -53,15 +53,6 @@
 #include "amiga/rtg.h"
 #include "amiga/utf8.h"
 
-/* set AMI_PLOTTER_DEBUG to 0 for no debugging, 1 for debugging */
-//#define AMI_PLOTTER_DEBUG 1
-
-#ifdef AMI_PLOTTER_DEBUG
-#define PLOT_LOG(x...) LOG(x)
-#else
-#define PLOT_LOG(x...) ((void) 0)
-#endif
-
 HOOKF(void, ami_bitmap_tile_hook, struct RastPort *, rp, struct BackFillMessage *);
 
 struct bfbitmap {
@@ -119,9 +110,6 @@ static bool palette_mapped = true; /* palette-mapped state for the screen */
   */
 #define AREA_SIZE 25000
 
-/* Define the below to get additional debug */
-#undef AMI_PLOTTER_DEBUG
-
 struct gui_globals *ami_plot_ra_alloc(ULONG width, ULONG height, bool force32bit, bool alloc_pen_list)
 {
 	/* init shared bitmaps */
@@ -438,7 +426,7 @@ static void ami_arc_gfxlib(struct RastPort *rp, int x, int y, int radius, int an
 static nserror
 ami_bitmap(struct gui_globals *glob, int x, int y, int width, int height, struct bitmap *bitmap)
 {
-	PLOT_LOG("[ami_plotter] Entered ami_bitmap()");
+	NSLOG(plot, DEEPDEBUG, "[ami_plotter] Entered ami_bitmap()");
 
 	struct BitMap *tbm;
 
@@ -458,7 +446,7 @@ ami_bitmap(struct gui_globals *glob, int x, int y, int width, int height, struct
 		return NSERROR_OK;
 	}
 
-	PLOT_LOG("[ami_plotter] ami_bitmap() got native bitmap");
+	NSLOG(plot, DEEPDEBUG, "[ami_plotter] ami_bitmap() got native bitmap");
 
 #ifdef __amigaos4__
 	if (__builtin_expect((GfxBase->LibNode.lib_Version >= 53) &&
@@ -617,7 +605,7 @@ ami_clip(const struct redraw_context *ctx, const struct rect *clip)
 	struct gui_globals *glob = (struct gui_globals *)ctx->priv;
 	struct Region *reg = NULL;
 
-	PLOT_LOG("[ami_plotter] Entered ami_clip()");
+	NSLOG(plot, DEEPDEBUG, "[ami_plotter] Entered ami_clip()");
 
 	if (glob->rp->Layer) {
 		reg = NewRegion();
@@ -661,7 +649,7 @@ ami_arc(const struct redraw_context *ctx,
 	const plot_style_t *style,
 	int x, int y, int radius, int angle1, int angle2)
 {
-	PLOT_LOG("[ami_plotter] Entered ami_arc()");
+	NSLOG(plot, DEEPDEBUG, "[ami_plotter] Entered ami_arc()");
 
 	struct gui_globals *glob = (struct gui_globals *)ctx->priv;
 
@@ -693,7 +681,7 @@ ami_disc(const struct redraw_context *ctx,
 		const plot_style_t *style,
 		int x, int y, int radius)
 {
-	PLOT_LOG("[ami_plotter] Entered ami_disc()");
+	NSLOG(plot, DEEPDEBUG, "[ami_plotter] Entered ami_disc()");
 
 	struct gui_globals *glob = (struct gui_globals *)ctx->priv;
 
@@ -728,7 +716,7 @@ ami_line(const struct redraw_context *ctx,
 		const plot_style_t *style,
 		const struct rect *line)
 {
-	PLOT_LOG("[ami_plotter] Entered ami_line()");
+	NSLOG(plot, DEEPDEBUG, "[ami_plotter] Entered ami_line()");
 
 	struct gui_globals *glob = (struct gui_globals *)ctx->priv;
 
@@ -780,7 +768,7 @@ ami_rectangle(const struct redraw_context *ctx,
 		     const plot_style_t *style,
 		     const struct rect *rect)
 {
-	PLOT_LOG("[ami_plotter] Entered ami_rectangle()");
+	NSLOG(plot, DEEPDEBUG, "[ami_plotter] Entered ami_rectangle()");
 
 	struct gui_globals *glob = (struct gui_globals *)ctx->priv;
 
@@ -844,7 +832,7 @@ ami_polygon(const struct redraw_context *ctx,
 		   const int *p,
 		   unsigned int n)
 {
-	PLOT_LOG("[ami_plotter] Entered ami_polygon()");
+	NSLOG(plot, DEEPDEBUG, "[ami_plotter] Entered ami_polygon()");
 
 	struct gui_globals *glob = (struct gui_globals *)ctx->priv;
 
@@ -893,7 +881,7 @@ ami_path(const struct redraw_context *ctx,
 	unsigned int i;
 	struct bez_point start_p = {0, 0}, cur_p = {0, 0}, p_a, p_b, p_c, p_r;
 
-	PLOT_LOG("[ami_plotter] Entered ami_path()");
+	NSLOG(plot, DEEPDEBUG, "[ami_plotter] Entered ami_path()");
 
 	struct gui_globals *glob = (struct gui_globals *)ctx->priv;
 
@@ -1037,7 +1025,7 @@ ami_bitmap_tile(const struct redraw_context *ctx,
 	bool repeat_x = (flags & BITMAPF_REPEAT_X);
 	bool repeat_y = (flags & BITMAPF_REPEAT_Y);
 
-	PLOT_LOG("[ami_plotter] Entered ami_bitmap_tile()");
+	NSLOG(plot, DEEPDEBUG, "[ami_plotter] Entered ami_bitmap_tile()");
 
 	struct gui_globals *glob = (struct gui_globals *)ctx->priv;
 
@@ -1154,7 +1142,7 @@ ami_text(const struct redraw_context *ctx,
 		const char *text,
 		size_t length)
 {
-	PLOT_LOG("[ami_plotter] Entered ami_text()");
+	NSLOG(plot, DEEPDEBUG, "[ami_plotter] Entered ami_text()");
 
 	struct gui_globals *glob = (struct gui_globals *)ctx->priv;
 
diff --git a/frontends/windows/plot.c b/frontends/windows/plot.c
index f38fe7522..376d37252 100644
--- a/frontends/windows/plot.c
+++ b/frontends/windows/plot.c
@@ -41,16 +41,6 @@
 #include "windows/gui.h"
 #include "windows/plot.h"
 
-
-/* set NSWS_PLOT_DEBUG to 0 for no debugging, 1 for debugging */
-/* #define NSWS_PLOT_DEBUG  */
-
-#ifdef NSWS_PLOT_DEBUG
-#define PLOT_LOG(x...) LOG(x)
-#else
-#define PLOT_LOG(x...) ((void) 0)
-#endif
-
 HDC plot_hdc;
 
 /** currently set clipping rectangle */
@@ -159,9 +149,9 @@ plot_alpha_bitmap(HDC hdc,
 	BITMAPINFO *bmi;
 	HBITMAP MemBMh;
 
-	PLOT_LOG("%p bitmap %d,%d width %d height %d",
+	NSLOG(plot, DEEPDEBUG, "%p bitmap %d,%d width %d height %d",
 		 bitmap, x, y, width, height);
-	PLOT_LOG("clipped %ld,%ld to %ld,%ld",
+	NSLOG(plot, DEEPDEBUG, "clipped %ld,%ld to %ld,%ld",
 		 plot_clip.left, plot_clip.top,
 		 plot_clip.right, plot_clip.bottom);
 
@@ -172,7 +162,7 @@ plot_alpha_bitmap(HDC hdc,
 
 	if ((bitmap->width != width) ||
 	    (bitmap->height != height)) {
-		PLOT_LOG("scaling from %d,%d to %d,%d",
+		NSLOG(plot, DEEPDEBUG, "scaling from %d,%d to %d,%d",
 			 bitmap->width, bitmap->height, width, height);
 		bitmap = bitmap_scale(bitmap, width, height);
 		if (bitmap == NULL) {
@@ -344,7 +334,7 @@ plot_bitmap(struct bitmap *bitmap, int x, int y, int width, int height)
 		if (bltres == 0) {
 			res = NSERROR_INVALID;
 		}
-		PLOT_LOG("bltres = %d", bltres);
+		NSLOG(plot, DEEPDEBUG, "bltres = %d", bltres);
 	} else {
 		/* Bitmap with alpha.*/
 		res = plot_alpha_bitmap(plot_hdc, bitmap, x, y, width, height);
@@ -366,7 +356,7 @@ plot_bitmap(struct bitmap *bitmap, int x, int y, int width, int height)
  */
 static nserror clip(const struct redraw_context *ctx, const struct rect *clip)
 {
-	PLOT_LOG("clip %d,%d to %d,%d", clip->x0, clip->y0, clip->x1, clip->y1);
+	NSLOG(plot, DEEPDEBUG, "clip %d,%d to %d,%d", clip->x0, clip->y0, clip->x1, clip->y1);
 
 	plot_clip.left = clip->x0;
 	plot_clip.top = clip->y0;
@@ -399,7 +389,7 @@ arc(const struct redraw_context *ctx,
     int x, int y,
     int radius, int angle1, int angle2)
 {
-	PLOT_LOG("arc centre %d,%d radius %d from %d to %d", x, y, radius,
+	NSLOG(plot, DEEPDEBUG, "arc centre %d,%d radius %d from %d to %d", x, y, radius,
 		 angle1, angle2);
 
 	/* ensure the plot HDC is set */
@@ -511,7 +501,7 @@ disc(const struct redraw_context *ctx,
      const plot_style_t *style,
      int x, int y, int radius)
 {
-	PLOT_LOG("disc at %d,%d radius %d", x, y, radius);
+	NSLOG(plot, DEEPDEBUG, "disc at %d,%d radius %d", x, y, radius);
 
 	/* ensure the plot HDC is set */
 	if (plot_hdc == NULL) {
@@ -590,7 +580,7 @@ line(const struct redraw_context *ctx,
      const plot_style_t *style,
      const struct rect *line)
 {
-	PLOT_LOG("from %d,%d to %d,%d", x0, y0, x1, y1);
+	NSLOG(plot, DEEPDEBUG, "from %d,%d to %d,%d", x0, y0, x1, y1);
 
 	/* ensure the plot HDC is set */
 	if (plot_hdc == NULL) {
@@ -656,7 +646,7 @@ rectangle(const struct redraw_context *ctx,
 	  const plot_style_t *style,
 	  const struct rect *rect)
 {
-	PLOT_LOG("rectangle from %d,%d to %d,%d",
+	NSLOG(plot, DEEPDEBUG, "rectangle from %d,%d to %d,%d",
 		 rect->x0, rect->y0, rect->x1, rect->y1);
 
 	/* ensure the plot HDC is set */
@@ -740,7 +730,7 @@ polygon(const struct redraw_context *ctx,
 	const int *p,
 	unsigned int n)
 {
-	PLOT_LOG("polygon %d points", n);
+	NSLOG(plot, DEEPDEBUG, "polygon %d points", n);
 
 	/* ensure the plot HDC is set */
 	if (plot_hdc == NULL) {
@@ -788,7 +778,7 @@ polygon(const struct redraw_context *ctx,
 		points[i].x = (long) p[2 * i];
 		points[i].y = (long) p[2 * i + 1];
 
-		PLOT_LOG("%ld,%ld ", points[i].x, points[i].y);
+		NSLOG(plot, DEEPDEBUG, "%ld,%ld ", points[i].x, points[i].y);
 	}
 
 	SelectClipRgn(plot_hdc, clipregion);
@@ -831,7 +821,7 @@ path(const struct redraw_context *ctx,
      float width,
      const float transform[6])
 {
-	PLOT_LOG("path unimplemented");
+	NSLOG(plot, DEEPDEBUG, "path unimplemented");
 	return NSERROR_OK;
 }
 
@@ -875,7 +865,7 @@ bitmap(const struct redraw_context *ctx,
 
 	/* Bail early if we can */
 
-	PLOT_LOG("Plotting %p at %d,%d by %d,%d",bitmap, x,y,width,height);
+	NSLOG(plot, DEEPDEBUG, "Plotting %p at %d,%d by %d,%d",bitmap, x,y,width,height);
 
 	if (bitmap == NULL) {
 		NSLOG(netsurf, INFO, "Passed null bitmap!");
@@ -937,8 +927,8 @@ bitmap(const struct redraw_context *ctx,
 		}
 	}
 
-	PLOT_LOG("Tiled plotting %d,%d by %d,%d", x, y, width, height);
-	PLOT_LOG("clipped %ld,%ld to %ld,%ld",
+	NSLOG(plot, DEEPDEBUG, "Tiled plotting %d,%d by %d,%d", x, y, width, height);
+	NSLOG(plot, DEEPDEBUG, "clipped %ld,%ld to %ld,%ld",
 		 plot_clip.left, plot_clip.top,
 		 plot_clip.right, plot_clip.bottom);
 
@@ -952,7 +942,7 @@ bitmap(const struct redraw_context *ctx,
 		for (; y > plot_clip.top; y -= height);
 	}
 
-	PLOT_LOG("repeat from %d,%d to %ld,%ld",
+	NSLOG(plot, DEEPDEBUG, "repeat from %d,%d to %ld,%ld",
 		 x, y, plot_clip.right, plot_clip.bottom);
 
 	/* tile down and across to extents */
@@ -989,7 +979,7 @@ text(const struct redraw_context *ctx,
      const char *text,
      size_t length)
 {
-	PLOT_LOG("words %s at %d,%d", text, x, y);
+	NSLOG(plot, DEEPDEBUG, "words %s at %d,%d", text, x, y);
 
 	/* ensure the plot HDC is set */
 	if (plot_hdc == NULL) {
diff --git a/utils/log.c b/utils/log.c
index db90cbf18..8630d87a4 100644
--- a/utils/log.c
+++ b/utils/log.c
@@ -94,6 +94,7 @@ static const char *nslog_gettime(void)
 NSLOG_DEFINE_CATEGORY(netsurf, "NetSurf default logging");
 NSLOG_DEFINE_CATEGORY(llcache, "Low level cache");
 NSLOG_DEFINE_CATEGORY(fetch, "objet fetching");
+NSLOG_DEFINE_CATEGORY(plot, "rendering system");
 
 static void
 netsurf_render_log(void *_ctx,
diff --git a/utils/log.h b/utils/log.h
index eee469255..247624769 100644
--- a/utils/log.h
+++ b/utils/log.h
@@ -59,6 +59,7 @@ extern nserror nslog_init(nslog_ensure_t *ensure, int *pargc, char **argv);
 NSLOG_DECLARE_CATEGORY(netsurf);
 NSLOG_DECLARE_CATEGORY(llcache);
 NSLOG_DECLARE_CATEGORY(fetch);
+NSLOG_DECLARE_CATEGORY(plot);
 
 #else /* WITH_NSLOG */