diff --git a/libobs/util/utf8.c b/libobs/util/utf8.c
index a90618ac878d0e..190524fbfea42f 100644
--- a/libobs/util/utf8.c
+++ b/libobs/util/utf8.c
@@ -14,6 +14,7 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 #include <wchar.h>
+#include <string.h>
 
 #include "utf8.h"
 
@@ -142,13 +143,10 @@ size_t utf8_to_wchar(const char *in, size_t insize, wchar_t *out,
 
 	total = 0;
 	p = (unsigned char *)in;
-	lim = (insize != 0) ? (p + insize) : (unsigned char *)-1;
+	lim = p + (insize != 0 ? insize : strlen(in));
 	wlim = out == NULL ? NULL : out + outsize;
 
 	for (; p < lim; p += n) {
-		if (!*p && insize == 0)
-			break;
-
 		if (utf8_forbidden(*p) != 0 && (flags & UTF8_IGNORE_ERROR) == 0)
 			return 0;
 
@@ -270,15 +268,12 @@ size_t wchar_to_utf8(const wchar_t *in, size_t insize, char *out,
 		return 0;
 
 	w = (wchar_t *)in;
-	wlim = (insize != 0) ? (w + insize) : (wchar_t *)-1;
+	wlim = w + (insize != 0 ? insize : wcslen(w));
 	p = (unsigned char *)out;
 	lim = out == NULL ? NULL : p + outsize;
 	total = 0;
 
 	for (; w < wlim; w++) {
-		if (!*w && insize == 0)
-			break;
-
 		if (wchar_forbidden(*w) != 0) {
 			if ((flags & UTF8_IGNORE_ERROR) == 0)
 				return 0;
diff --git a/plugins/text-freetype2/text-freetype2.c b/plugins/text-freetype2/text-freetype2.c
index 3de3dc4c68f1cf..dd851297f384d6 100644
--- a/plugins/text-freetype2/text-freetype2.c
+++ b/plugins/text-freetype2/text-freetype2.c
@@ -238,6 +238,7 @@ static void ft2_source_destroy(void *data)
 		bfree(srcdata->font_style);
 	if (srcdata->text != NULL)
 		bfree(srcdata->text);
+	srcdata->text_len = 0;
 	if (srcdata->texbuf != NULL)
 		bfree(srcdata->texbuf);
 	if (srcdata->text_file != NULL)
@@ -271,7 +272,8 @@ static void ft2_source_render(void *data, gs_effect_t *effect)
 
 	if (srcdata->tex == NULL || srcdata->vbuf == NULL)
 		return;
-	if (srcdata->text == NULL || *srcdata->text == 0)
+	if (srcdata->text == NULL || *srcdata->text == 0 ||
+	    srcdata->text_len == 0)
 		return;
 
 	gs_reset_blend_state();
@@ -281,7 +283,7 @@ static void ft2_source_render(void *data, gs_effect_t *effect)
 		draw_drop_shadow(srcdata);
 
 	draw_uv_vbuffer(srcdata->vbuf, srcdata->tex, srcdata->draw_effect,
-			(uint32_t)wcslen(srcdata->text) * 6, true);
+			(uint32_t)srcdata->text_len * 6, true);
 
 	UNUSED_PARAMETER(effect);
 }
@@ -304,7 +306,7 @@ static void ft2_video_tick(void *data, float seconds)
 			else
 				load_text_from_file(srcdata,
 						    srcdata->text_file);
-			cache_glyphs(srcdata, srcdata->text);
+			cache_glyphs(srcdata, srcdata->text, srcdata->text_len);
 			set_up_vertex_buffer(srcdata);
 			srcdata->update_file = false;
 		}
@@ -490,8 +492,8 @@ static void ft2_source_update(void *data, obs_data_t *settings)
 			bfree(srcdata->text);
 			srcdata->text = NULL;
 
-			os_utf8_to_wcs_ptr(emptystr, strlen(emptystr),
-					   &srcdata->text);
+			srcdata->text_len = os_utf8_to_wcs_ptr(
+				emptystr, strlen(emptystr), &srcdata->text);
 			blog(LOG_WARNING,
 			     "FT2-text: Failed to open %s for "
 			     "reading",
@@ -519,13 +521,15 @@ static void ft2_source_update(void *data, obs_data_t *settings)
 		if (srcdata->text != NULL) {
 			bfree(srcdata->text);
 			srcdata->text = NULL;
+			srcdata->text_len = 0;
 		}
 
-		os_utf8_to_wcs_ptr(tmp, strlen(tmp), &srcdata->text);
+		srcdata->text_len =
+			os_utf8_to_wcs_ptr(tmp, strlen(tmp), &srcdata->text);
 	}
 
 	if (srcdata->font_face) {
-		cache_glyphs(srcdata, srcdata->text);
+		cache_glyphs(srcdata, srcdata->text, srcdata->text_len);
 		set_up_vertex_buffer(srcdata);
 	}
 
diff --git a/plugins/text-freetype2/text-freetype2.h b/plugins/text-freetype2/text-freetype2.h
index 98e404f842d944..dac94057305083 100644
--- a/plugins/text-freetype2/text-freetype2.h
+++ b/plugins/text-freetype2/text-freetype2.h
@@ -40,6 +40,7 @@ struct ft2_source {
 	bool antialiasing;
 	char *text_file;
 	wchar_t *text;
+	size_t text_len;
 	time_t m_timestamp;
 	bool update_file;
 	uint64_t last_checked;
@@ -98,7 +99,8 @@ void load_text_from_file(struct ft2_source *srcdata, const char *filename);
 void read_from_end(struct ft2_source *srcdata, const char *filename);
 
 void cache_standard_glyphs(struct ft2_source *srcdata);
-void cache_glyphs(struct ft2_source *srcdata, wchar_t *cache_glyphs);
+void cache_glyphs(struct ft2_source *srcdata, wchar_t *cache_glyphs,
+		  size_t cache_glyphs_len);
 
 void set_up_vertex_buffer(struct ft2_source *srcdata);
 void fill_vertex_buffer(struct ft2_source *srcdata);
diff --git a/plugins/text-freetype2/text-functionality.c b/plugins/text-freetype2/text-functionality.c
index 08eb96e72a66ad..45e83d0505b2c7 100644
--- a/plugins/text-freetype2/text-functionality.c
+++ b/plugins/text-freetype2/text-functionality.c
@@ -39,7 +39,7 @@ void draw_outlines(struct ft2_source *srcdata)
 				      0.0f);
 		draw_uv_vbuffer(srcdata->vbuf, srcdata->tex,
 				srcdata->draw_effect,
-				(uint32_t)wcslen(srcdata->text) * 6, false);
+				(uint32_t)srcdata->text_len * 6, false);
 	}
 	gs_matrix_identity();
 	gs_matrix_pop();
@@ -53,7 +53,7 @@ void draw_drop_shadow(struct ft2_source *srcdata)
 	gs_matrix_push();
 	gs_matrix_translate3f(4.0f, 4.0f, 0.0f);
 	draw_uv_vbuffer(srcdata->vbuf, srcdata->tex, srcdata->draw_effect,
-			(uint32_t)wcslen(srcdata->text) * 6, false);
+			(uint32_t)srcdata->text_len * 6, false);
 	gs_matrix_identity();
 	gs_matrix_pop();
 }
@@ -86,17 +86,17 @@ void set_up_vertex_buffer(struct ft2_source *srcdata)
 	}
 
 	srcdata->vbuf =
-		create_uv_vbuffer((uint32_t)wcslen(srcdata->text) * 6, true);
+		create_uv_vbuffer((uint32_t)srcdata->text_len * 6, true);
 
 	if (srcdata->custom_width <= 100)
 		goto skip_word_wrap;
 	if (!srcdata->word_wrap)
 		goto skip_word_wrap;
 
-	len = wcslen(srcdata->text);
+	len = srcdata->text_len;
 
 	for (uint32_t i = 0; i <= len; i++) {
-		if (i == wcslen(srcdata->text))
+		if (i == srcdata->text_len)
 			goto eos_check;
 
 		if (srcdata->text[i] != L' ' && srcdata->text[i] != L'\n')
@@ -108,7 +108,7 @@ void set_up_vertex_buffer(struct ft2_source *srcdata)
 				srcdata->text[space_pos] = L'\n';
 			x = 0;
 		}
-		if (i == wcslen(srcdata->text))
+		if (i == srcdata->text_len)
 			goto eos_skip;
 
 		x += word_width;
@@ -145,7 +145,7 @@ void fill_vertex_buffer(struct ft2_source *srcdata)
 	uint32_t dx = 0, dy = srcdata->max_h, max_y = dy;
 	uint32_t cur_glyph = 0;
 	uint32_t offset = 0;
-	size_t len = wcslen(srcdata->text);
+	size_t len = srcdata->text_len;
 
 	if (srcdata->outline_text) {
 		offset = 2;
@@ -159,7 +159,7 @@ void fill_vertex_buffer(struct ft2_source *srcdata)
 		dx = offset;
 		i++;
 		dy += srcdata->max_h + 4;
-		if (i == wcslen(srcdata->text))
+		if (i == srcdata->text_len)
 			goto skip_glyph;
 		if (srcdata->text[i] == L'\n')
 			goto add_linebreak;
@@ -213,9 +213,11 @@ void cache_standard_glyphs(struct ft2_source *srcdata)
 	srcdata->texbuf_x = 0;
 	srcdata->texbuf_y = 0;
 
-	cache_glyphs(srcdata, L"abcdefghijklmnopqrstuvwxyz"
-			      L"ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"
-			      L"!@#$%^&*()-_=+,<.>/?\\|[]{}`~ \'\"\0");
+	cache_glyphs(srcdata,
+		     L"abcdefghijklmnopqrstuvwxyz"
+		     L"ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"
+		     L"!@#$%^&*()-_=+,<.>/?\\|[]{}`~ \'\"\0",
+		     0);
 }
 
 FT_Render_Mode get_render_mode(struct ft2_source *srcdata)
@@ -290,7 +292,8 @@ void rasterize(struct ft2_source *srcdata, FT_GlyphSlot slot,
 	}
 }
 
-void cache_glyphs(struct ft2_source *srcdata, wchar_t *cache_glyphs)
+void cache_glyphs(struct ft2_source *srcdata, wchar_t *cache_glyphs,
+		  size_t cache_glyphs_len)
 {
 	if (!srcdata->font_face || !cache_glyphs)
 		return;
@@ -301,7 +304,8 @@ void cache_glyphs(struct ft2_source *srcdata, wchar_t *cache_glyphs)
 	uint32_t dy = srcdata->texbuf_y;
 
 	int32_t cached_glyphs = 0;
-	const size_t len = wcslen(cache_glyphs);
+	const size_t len = cache_glyphs_len == 0 ? wcslen(cache_glyphs)
+						 : cache_glyphs_len;
 
 	const FT_Render_Mode render_mode = get_render_mode(srcdata);
 
@@ -379,15 +383,15 @@ time_t get_modified_timestamp(char *filename)
 	return stats.st_mtime;
 }
 
-static void remove_cr(wchar_t *source)
+static void remove_cr(wchar_t *source, size_t *source_len)
 {
-	int j = 0;
-	for (int i = 0; source[i] != '\0'; ++i) {
+	size_t j = 0;
+	for (size_t i = 0; i < *source_len; ++i) {
 		if (source[i] != L'\r') {
 			source[j++] = source[i];
 		}
 	}
-	source[j] = '\0';
+	*source_len = j;
 }
 
 void load_text_from_file(struct ft2_source *srcdata, const char *filename)
@@ -416,9 +420,15 @@ void load_text_from_file(struct ft2_source *srcdata, const char *filename)
 		if (srcdata->text != NULL) {
 			bfree(srcdata->text);
 			srcdata->text = NULL;
+			srcdata->text_len = 0;
+		}
+
+		// wchar_t was a mistake.
+		if (sizeof(wchar_t) == 2) {
+			srcdata->text = bzalloc(filesize);
+			srcdata->text_len = fread(srcdata->text, 2,
+						  (filesize - 2) / 2, tmp_file);
 		}
-		srcdata->text = bzalloc(filesize);
-		bytes_read = fread(srcdata->text, filesize - 2, 1, tmp_file);
 
 		bfree(tmp_read);
 		fclose(tmp_file);
@@ -429,18 +439,18 @@ void load_text_from_file(struct ft2_source *srcdata, const char *filename)
 	fseek(tmp_file, 0, SEEK_SET);
 
 	tmp_read = bzalloc(filesize + 1);
-	bytes_read = fread(tmp_read, filesize, 1, tmp_file);
+	bytes_read = fread(tmp_read, 1, filesize, tmp_file);
 	fclose(tmp_file);
 
 	if (srcdata->text != NULL) {
 		bfree(srcdata->text);
 		srcdata->text = NULL;
 	}
-	srcdata->text = bzalloc((strlen(tmp_read) + 1) * sizeof(wchar_t));
-	os_utf8_to_wcs(tmp_read, strlen(tmp_read), srcdata->text,
-		       (strlen(tmp_read) + 1));
+	srcdata->text_len = os_utf8_to_wcs(tmp_read, bytes_read, NULL, 0) + 1;
+	srcdata->text = bzalloc(srcdata->text_len * sizeof(wchar_t));
+	os_utf8_to_wcs(tmp_read, bytes_read, srcdata->text, srcdata->text_len);
 
-	remove_cr(srcdata->text);
+	remove_cr(srcdata->text, &srcdata->text_len);
 	bfree(tmp_read);
 }
 
@@ -501,11 +511,16 @@ void read_from_end(struct ft2_source *srcdata, const char *filename)
 			bfree(srcdata->text);
 			srcdata->text = NULL;
 		}
-		srcdata->text = bzalloc(filesize - cur_pos);
-		bytes_read =
-			fread(srcdata->text, (filesize - cur_pos), 1, tmp_file);
 
-		remove_cr(srcdata->text);
+		// wchar_t was a mistake.
+		if (sizeof(wchar_t) == 2) {
+			srcdata->text = bzalloc(filesize - cur_pos);
+			srcdata->text_len = fread(srcdata->text, 2,
+						  (filesize - cur_pos) / 2,
+						  tmp_file);
+		}
+
+		remove_cr(srcdata->text, &srcdata->text_len);
 		bfree(tmp_read);
 		fclose(tmp_file);
 
@@ -513,18 +528,18 @@ void read_from_end(struct ft2_source *srcdata, const char *filename)
 	}
 
 	tmp_read = bzalloc((filesize - cur_pos) + 1);
-	bytes_read = fread(tmp_read, filesize - cur_pos, 1, tmp_file);
+	bytes_read = fread(tmp_read, 1, filesize - cur_pos, tmp_file);
 	fclose(tmp_file);
 
 	if (srcdata->text != NULL) {
 		bfree(srcdata->text);
 		srcdata->text = NULL;
 	}
-	srcdata->text = bzalloc((strlen(tmp_read) + 1) * sizeof(wchar_t));
-	os_utf8_to_wcs(tmp_read, strlen(tmp_read), srcdata->text,
-		       (strlen(tmp_read) + 1));
+	srcdata->text_len = os_utf8_to_wcs(tmp_read, bytes_read, NULL, 0) + 1;
+	srcdata->text = bzalloc(srcdata->text_len * sizeof(wchar_t));
+	os_utf8_to_wcs(tmp_read, bytes_read, srcdata->text, srcdata->text_len);
 
-	remove_cr(srcdata->text);
+	remove_cr(srcdata->text, &srcdata->text_len);
 	bfree(tmp_read);
 }
 
@@ -536,7 +551,7 @@ uint32_t get_ft2_text_width(wchar_t *text, struct ft2_source *srcdata)
 
 	FT_GlyphSlot slot = srcdata->font_face->glyph;
 	uint32_t w = 0, max_w = 0;
-	const size_t len = wcslen(text);
+	const size_t len = srcdata->text_len;
 	for (size_t i = 0; i < len; i++) {
 		const FT_UInt glyph_index =
 			FT_Get_Char_Index(srcdata->font_face, text[i]);