diff --git a/docs/nimble_companion_trial.md b/docs/nimble_companion_trial.md
index 1d9f5c06..e3992f1e 100644
--- a/docs/nimble_companion_trial.md
+++ b/docs/nimble_companion_trial.md
@@ -22,9 +22,9 @@ It is not the generic XIAO profile for separately wired radio modules. Both
 boards retain their parent Full Companion features, USB mOTA sender, WiFi
 update slots, and PSRAM-backed offline queue. The V4 also retains direct MQTT.
 
-The [small-screen Picopixel layout](v4_pixel5_font_trial.md) uses 5-pixel
-capital letters, a compact channel/sender line and full message previews.
-A named V4 trial profile is available for hardware qualification.
+The [small-screen message layout](v4_pixel5_font_trial.md) uses 6-pixel capitals
+on 128x64 panels and 5-pixel capitals on very tiny panels. It includes a compact
+channel/sender line and full message previews. Font selection is automatic.
 
 ## Build
 
diff --git a/docs/v4_pixel5_font_trial.md b/docs/v4_pixel5_font_trial.md
index 47326036..76a8f8c9 100644
--- a/docs/v4_pixel5_font_trial.md
+++ b/docs/v4_pixel5_font_trial.md
@@ -1,23 +1,33 @@
-# Small-screen Picopixel message font
+# Small-screen message fonts
 
-Small-screen Companion builds use Picopixel for received message text and the
-channel/sender line, including `Ch 0 Public`. This covers SSD1306 and SH1106
-OLEDs, ST7735 small TFTs, and the U8g2 T-Echo Card display. The shared renderer
-uses the same font data on every driver. Larger displays keep their existing
-font. Menus, Bluetooth PINs and WiFi setup QR codes keep their normal layout.
+Small-screen Companion builds automatically select a compact font for received
+message text and the channel/sender line, including `Ch 0 Public`. This covers
+SSD1306 and SH1106 OLEDs, ST7735 small TFTs, and the U8g2 T-Echo Card display.
+The shared renderer selects by logical panel dimensions, including rotation:
 
-Capital letters are 5 logical pixels high; descenders can occupy a sixth
-pixel, so lines advance by 7 pixels. Most characters advance by 4 pixels
-horizontally. The normal OLED font uses 7-pixel letters, 8-pixel line spacing
-and 6-pixel character advances. Small TFTs retain their existing logical to
-physical scaling.
+| Panel size | Font | Capital height | Line spacing |
+| --- | --- | ---: | ---: |
+| At least 128 x 64, or 64 x 128 rotated | Squeezed Regular 6 | 6 pixels | 8 pixels |
+| Smaller panels, including 72 x 40, 128 x 32 and 64 x 48 | Picopixel | 5 pixels | 7 pixels |
 
-On a 128 x 64 OLED, compacting the channel/sender line moves message text from
-y=25 to y=21. Six complete small-font rows fit instead of five, roughly 30
-additional characters depending on the letters. Text wraps at character
-boundaries; the last line ends with `...` if it still cannot fit. Unsupported
-characters appear as `?`. Long channel/sender names are ellipsized so they
-cannot overlap the message.
+Both fonts allow one pixel for descenders and one blank pixel row between
+lines. Character widths vary: most letters advance by 4 pixels, with narrow
+letters taking less space and `M` and `W` taking 6 pixels. Squeezed Regular 6
+is a [public-domain font by Oliver Kraus](https://github.com/olikraus/u8g2/wiki/fntgrpu8g#squeezed_r6).
+Its bitmap data is stored as constants without heap allocation.
+
+On a 128 x 64 OLED, the compact channel/sender line starts at y=14 and message
+text at y=22. Five complete 6px-font rows fit. The software comparison fits
+three representative 160-character messages in those five rows. Capacity
+depends on the characters; messages with many wide letters can still overflow.
+Text wraps at character boundaries, with `...` on the last line if necessary.
+Unsupported characters appear as `?`. Long channel/sender names are ellipsized
+to stay on their own line. An enabled channel footer reserves its own space.
+
+Larger display classes keep their existing font. Menus, Bluetooth PINs and WiFi
+setup QR codes keep their normal layout. Small TFTs retain their existing
+logical to physical scaling. The normal OLED font uses 7-pixel letters,
+8-pixel line spacing and 6-pixel character advances.
 
 The preview buffer holds a complete 160-byte MeshCore message plus its
 terminator. Previously the main message UI allocated 78 bytes, leaving room
@@ -36,15 +46,17 @@ Enable `platformio.nimble.ini` in the ignored `platformio.local.ini` as shown
 in the [NimBLE trial guide](nimble_companion_trial.md#build), then run:
 
 ```sh
-OUTPUT_DIR=.releases/v4-pixel5 bash build.sh build-firmware \
-  heltec_v4_2_v4_3_companion_radio_full_femon_nimble_pixel5 \
-  --firmware-version v1.17.1.5-halo-keymind-cascade-pixel5-trial \
+OUTPUT_DIR=.releases/v4-smallfont bash build.sh build-firmware \
+  heltec_v4_2_v4_3_companion_radio_full_femon_nimble \
+  --firmware-version v1.17.1.5-halo-keymind-cascade-squeezed6-trial \
   --radio-preset usa-cascadia --profile cascade --standard --require-ota
 ```
 
-The named trial keeps NimBLE, 350 contacts, 40 channels, the V4's 512-frame
+This build keeps NimBLE, 350 contacts, 40 channels, the V4's 512-frame
 PSRAM queue, USB mOTA sending and WiFi OTA support. The smaller font is also
 the default in ordinary small-screen Companion builds from this source.
+The older `_nimble_pixel5` environment name remains available, but also uses
+the automatic 5px/6px selection.
 
 Use the application `.bin` for WiFi OTA. A clean USB install uses the merged
 image at address 0. When manually writing the application at `0x10000`, an
@@ -66,16 +78,18 @@ python3 -B test/test_firmware_ram.py
 pio test -e native -f test_display_driver -f test_companion_message_history
 ```
 
-The native tests exercise the shared renderer, five-pixel capitals, complete
-rows at display edges, long sender lines, overflow markers and tiny/rotated
-screen geometry. The additional Adafruit comparison checks all 95 printable
-ASCII glyphs pixel for pixel against the original Picopixel font, under
-address/undefined-behavior sanitizers. That comparison needs a cached
+The native tests exercise both capital heights, automatic font selection,
+160-character messages, complete rows at display edges, long sender lines,
+reserved footers, overflow markers and tiny/rotated screen geometry. The
+additional rendering comparison checks all 95 printable ASCII glyphs in each
+font, under address/undefined-behavior sanitizers. Picopixel is compared pixel
+for pixel with Adafruit GFX; Squeezed Regular 6 is compared with the upstream
+BDF fixture independently of the converted C++ tables. This needs a cached
 PlatformIO Adafruit GFX library; set `MESHCORE_GFX_LIBRARY` to its directory
 if needed. It reports a skip when the library is absent. The native tests do
 not require that dependency. Run only one PlatformIO command at a time.
 
-## Hardware and build results, 2026-09-08
+## Earlier 5px hardware and build results, 2026-09-08
 
 Source revision `eeea15ef` passed seven representative firmware builds:
 
diff --git a/examples/companion_radio/ui-new/UITask.cpp b/examples/companion_radio/ui-new/UITask.cpp
index 5290406a..1b9df2fb 100644
--- a/examples/companion_radio/ui-new/UITask.cpp
+++ b/examples/companion_radio/ui-new/UITask.cpp
@@ -4,7 +4,7 @@
 #include <helpers/ui/CompanionHomeLayout.h>
 #include <helpers/ui/CompanionMessageHistory.h>
 #if UI_SMALL_MESSAGE_FONT == 1
-  #include <helpers/ui/Pixel5Text.h>
+  #include <helpers/ui/SmallMessageText.h>
 #endif
 #include <helpers/ui/CompanionTransportSelectorLayout.h>
 #include "../MyMesh.h"
@@ -1444,7 +1444,7 @@ public:
 
 #if UI_SMALL_MESSAGE_FONT == 1
     mesh::ui::drawSmallMessageBody(display, p->origin, p->message,
-        layout.origin_y, layout.origin_y + 7,
+        layout.origin_y,
         UI_MESSAGE_CHANNEL_FOOTER == 1
             ? display.height() - layout.filter_height : display.height());
 #else
diff --git a/examples/companion_radio/ui-orig/UITask.cpp b/examples/companion_radio/ui-orig/UITask.cpp
index eeb70fbe..78a2a13b 100644
--- a/examples/companion_radio/ui-orig/UITask.cpp
+++ b/examples/companion_radio/ui-orig/UITask.cpp
@@ -1,6 +1,6 @@
 #include "UITask.h"
 #if UI_SMALL_MESSAGE_FONT == 1
-  #include <helpers/ui/Pixel5Text.h>
+  #include <helpers/ui/SmallMessageText.h>
 #endif
 #include <Arduino.h>
 #include <helpers/TxtDataHelpers.h>
@@ -246,7 +246,7 @@ void UITask::renderCurrScreen() {
     _display->print(_node_prefs->node_name);
 
 #if UI_SMALL_MESSAGE_FONT == 1
-    mesh::ui::drawSmallMessageBody(*_display, _origin, _msg, 12, 19);
+    mesh::ui::drawSmallMessageBody(*_display, _origin, _msg, 12);
 #else
     _display->setCursor(0, 12);
     _display->setColor(UIColor::secondary_txt);
diff --git a/examples/companion_radio/ui-tiny/UITask.cpp b/examples/companion_radio/ui-tiny/UITask.cpp
index d2236bb5..b72738f1 100644
--- a/examples/companion_radio/ui-tiny/UITask.cpp
+++ b/examples/companion_radio/ui-tiny/UITask.cpp
@@ -1,6 +1,6 @@
 #include "UITask.h"
 #if UI_SMALL_MESSAGE_FONT == 1
-  #include <helpers/ui/Pixel5Text.h>
+  #include <helpers/ui/SmallMessageText.h>
 #endif
 #include <helpers/TxtDataHelpers.h>
 #include <helpers/ui/BluetoothPairingUiPolicy.h>
@@ -460,7 +460,7 @@ public:
   }
   int render(DisplayDriver& display) override {
     // The 72x40 interface reserves its top 8px for the scrolling status bar.
-    mesh::ui::drawSmallMessageBody(display, _origin, _message, 10, 17);
+    mesh::ui::drawSmallMessageBody(display, _origin, _message, 10);
     return 1000;
   }
   bool handleInput(char c) override {
diff --git a/platformio.nimble.ini b/platformio.nimble.ini
index 3e141c05..68b9bb4e 100644
--- a/platformio.nimble.ini
+++ b/platformio.nimble.ini
@@ -19,6 +19,7 @@ lib_deps =
   ${companion_nimble_trial.lib_deps}
 lib_ignore = ${companion_nimble_trial.lib_ignore}
 
+; Legacy trial name; UI_SMALL_MESSAGE_FONT now selects 5px or 6px by panel size.
 [env:heltec_v4_2_v4_3_companion_radio_full_femon_nimble_pixel5]
 extends = env:heltec_v4_2_v4_3_companion_radio_full_femon_nimble
 build_flags =
diff --git a/src/helpers/ui/Pixel5FontData.h b/src/helpers/ui/Pixel5FontData.h
index 3b3c0abd..a2fa8e85 100644
--- a/src/helpers/ui/Pixel5FontData.h
+++ b/src/helpers/ui/Pixel5FontData.h
@@ -30,17 +30,11 @@ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 POSSIBILITY OF SUCH DAMAGE.
 */
 
-#include <stdint.h>
+#include "SmallFontGlyph.h"
 
 namespace mesh {
 namespace ui {
 
-struct Pixel5Glyph {
-  uint16_t bitmap_offset;
-  uint8_t width, height, advance;
-  int8_t x_offset, y_offset;
-};
-
 static const uint8_t pixel5Bitmaps[] = {
     0xE8, 0xB4, 0x57, 0xD5, 0xF5, 0x00, 0x4E, 0x3E, 0x80, 0xA5, 0x4A, 0x4A,
     0x5A, 0x50, 0xC0, 0x6A, 0x40, 0x95, 0x80, 0xAA, 0x80, 0x5D, 0x00, 0x60,
@@ -58,7 +52,7 @@ static const uint8_t pixel5Bitmaps[] = {
     0x90, 0xE8, 0x71, 0xE0, 0xBA, 0x40, 0xB5, 0x80, 0xB5, 0x00, 0x8D, 0x54,
     0xAA, 0x80, 0xAC, 0xE0, 0xE5, 0x70, 0x6A, 0x26, 0xFC, 0xC8, 0xAC, 0x5A};
 
-static const Pixel5Glyph pixel5Glyphs[] = {{0, 0, 0, 2, 0, 1},     // 0x20 ' '
+static const SmallFontGlyph pixel5Glyphs[] = {{0, 0, 0, 2, 0, 1},     // 0x20 ' '
                                             {0, 1, 5, 2, 0, -4},    // 0x21 '!'
                                             {1, 3, 2, 4, 0, -4},    // 0x22 '"'
                                             {2, 5, 5, 6, 0, -4},    // 0x23 '#'
diff --git a/src/helpers/ui/SmallFontGlyph.h b/src/helpers/ui/SmallFontGlyph.h
new file mode 100644
index 00000000..47d17cf6
--- /dev/null
+++ b/src/helpers/ui/SmallFontGlyph.h
@@ -0,0 +1,16 @@
+#pragma once
+
+#include <stdint.h>
+
+namespace mesh {
+namespace ui {
+
+// Packed monochrome bitmap metrics, with GFX-style baseline offsets.
+struct SmallFontGlyph {
+  uint16_t bitmap_offset;
+  uint8_t width, height, advance;
+  int8_t x_offset, y_offset;
+};
+
+}  // namespace ui
+}  // namespace mesh
diff --git a/src/helpers/ui/Pixel5Text.h b/src/helpers/ui/SmallMessageText.h
similarity index 60%
rename from src/helpers/ui/Pixel5Text.h
rename to src/helpers/ui/SmallMessageText.h
index 1c2f1f39..5edf5b6b 100644
--- a/src/helpers/ui/Pixel5Text.h
+++ b/src/helpers/ui/SmallMessageText.h
@@ -3,25 +3,40 @@
 #include "DisplayDriver.h"
 #include "DisplayTextLayout.h"
 #include "Pixel5FontData.h"
+#include "Squeezed6FontData.h"
 
 namespace mesh {
 namespace ui {
 
 // Draw through the common pixel interface so OLED, TFT and U8g2 panels use
 // identical glyphs. This stack wrapper leaves the driver's normal font alone.
-class Pixel5Text : public DisplayDriver {
+class SmallMessageText : public DisplayDriver {
   DisplayDriver& _display;
+  const bool _six_pixel;
   int _x = 0, _y = 0;
 
-  static const Pixel5Glyph& glyph(uint8_t c) {
-    return pixel5Glyphs[(c >= 32 && c <= 126 ? c : '?') - 32];
+  const SmallFontGlyph& glyph(uint8_t c) const {
+    const int index = (c >= 32 && c <= 126 ? c : '?') - 32;
+    return _six_pixel ? squeezed6Glyphs[index] : pixel5Glyphs[index];
   }
 
 public:
-  explicit Pixel5Text(DisplayDriver& display)
-      : DisplayDriver(display.width(), display.height()), _display(display) {}
-  static constexpr int line_height = 7;
-  static constexpr int glyph_height = 6; // 5px capitals plus descenders
+  explicit SmallMessageText(DisplayDriver& display)
+      : DisplayDriver(display.width(), display.height()), _display(display),
+        _six_pixel((width() >= 128 && height() >= 64)
+                   || (width() >= 64 && height() >= 128)) {}
+
+  // Preserve Picopixel on very tiny panels, including rotated 72x40 and
+  // 128x32 screens. This wrapper is used only by the compact message UI.
+  int capitalHeight() const { return _six_pixel ? 6 : 5; }
+  int glyphHeight() const { return capitalHeight() + 1; } // descenders
+  int lineHeight() const { return glyphHeight() + 1; } // blank row
+  int lineCount(int y, int bottom = -1) const {
+    if (bottom < 0 || bottom > height()) bottom = height();
+    const int remaining = bottom - y;
+    return remaining < glyphHeight() ? 0
+        : 1 + (remaining - glyphHeight()) / lineHeight();
+  }
 
   bool isOn() override { return _display.isOn(); }
   void turnOn() override { _display.turnOn(); }
@@ -48,13 +63,14 @@ public:
   }
   void print(const char* str) override {
     while (*str) {
-      const Pixel5Glyph& g = glyph((uint8_t)*str++);
+      const SmallFontGlyph& g = glyph((uint8_t)*str++);
+      const uint8_t* bitmap = _six_pixel ? squeezed6Bitmaps : pixel5Bitmaps;
       for (int row = 0; row < g.height; ++row) {
-        const int y = _y + 4 + g.y_offset + row;
+        const int y = _y + capitalHeight() - 1 + g.y_offset + row;
         if (y < 0 || y >= height()) continue;
         for (int col = 0; col < g.width; ++col) {
           const int bit = row * g.width + col;
-          if (!(pixel5Bitmaps[g.bitmap_offset + bit / 8]
+          if (!(bitmap[g.bitmap_offset + bit / 8]
                 & (0x80 >> (bit % 8)))) continue;
           const int x = _x + g.x_offset + col;
           if (x >= 0 && x < width()) _display.fillRect(x, y, 1, 1);
@@ -65,32 +81,23 @@ public:
   }
   void printWordWrap(const char* str, int max_width) override {
     if (max_width > width() - _x) max_width = width() - _x;
-    const int lines = (height() - _y + line_height - glyph_height) / line_height;
-    drawTextWrapped(*this, _x, _y, max_width, line_height, lines, str);
+    drawTextWrapped(*this, _x, _y, max_width, lineHeight(), lineCount(_y), str);
   }
 };
 
-inline int smallMessageLineCount(int height, int message_y) {
-  const int remaining = height - message_y;
-  return remaining < Pixel5Text::glyph_height ? 0
-      : (remaining + Pixel5Text::line_height - Pixel5Text::glyph_height)
-          / Pixel5Text::line_height;
-}
-
 inline void drawSmallMessageBody(DisplayDriver& display, const char* origin,
                                  const char* message, int origin_y = 14,
-                                 int message_y = 21, int bottom = -1) {
-  Pixel5Text text(display);
+                                 int bottom = -1) {
+  SmallMessageText text(display);
+  const int message_y = origin_y + text.lineHeight();
   char translated[161];
   text.translateUTF8ToBlocks(translated, origin, sizeof(translated));
   text.setColor(UIColor::secondary_txt);
   text.drawTextEllipsized(0, origin_y, display.width(), translated);
   text.translateUTF8ToBlocks(translated, message, sizeof(translated));
   text.setColor(UIColor::primary_txt);
-  const int height = bottom < 0 || bottom > display.height()
-      ? display.height() : bottom;
-  drawTextWrapped(text, 0, message_y, display.width(), Pixel5Text::line_height,
-                  smallMessageLineCount(height, message_y), translated);
+  drawTextWrapped(text, 0, message_y, display.width(), text.lineHeight(),
+                  text.lineCount(message_y, bottom), translated);
 }
 
 }  // namespace ui
diff --git a/src/helpers/ui/Squeezed6FontData.h b/src/helpers/ui/Squeezed6FontData.h
new file mode 100644
index 00000000..3412839c
--- /dev/null
+++ b/src/helpers/ui/Squeezed6FontData.h
@@ -0,0 +1,134 @@
+#pragma once
+
+// Squeezed Regular 6 by Oliver Kraus. Public domain.
+// Lossless conversion of the ASCII glyphs from the upstream BDF.
+// Source: https://raw.githubusercontent.com/olikraus/u8g2/57d191014bebc263868526491e7f7c33ddcf6042/tools/font/bdf/u8g2_squeezed_regular_6.bdf
+// BDF SHA-256: a50740bd62accaa104e52da98210b3db10e03d75c6fbac1a31010177fad92277
+// Reference: test/fixtures/small_message_font/squeezed6.bdf
+
+#include "SmallFontGlyph.h"
+
+namespace mesh {
+namespace ui {
+
+static const uint8_t squeezed6Bitmaps[] = {
+    0xF4, 0xB4, 0x57, 0xD5, 0xF5, 0x00, 0x23, 0xE8, 0xE2, 0xF8, 0x80, 0xA5,
+    0x29, 0x40, 0x4A, 0x4A, 0xA5, 0xC0, 0x6A, 0x90, 0x95, 0x60, 0xAB, 0xAA,
+    0x5D, 0x00, 0xC0, 0xC0, 0x80, 0x25, 0x29, 0x00, 0x56, 0xDA, 0x80, 0x75,
+    0x50, 0x96, 0xB0, 0xD9, 0x60, 0xB7, 0x92, 0x40, 0xE9, 0x60, 0x53, 0x5A,
+    0x80, 0xE5, 0x24, 0x80, 0x55, 0x5A, 0x80, 0x55, 0x92, 0x80, 0xA0, 0x98,
+    0x64, 0xCC, 0x98, 0x9A, 0x20, 0x69, 0xBB, 0x87, 0x57, 0xDB, 0x40, 0xD7,
+    0x5B, 0x80, 0x6A, 0x90, 0xD6, 0xDB, 0x80, 0xEE, 0xB0, 0xEE, 0xA0, 0x72,
+    0xDA, 0xC0, 0xB7, 0xDB, 0x40, 0xFC, 0x55, 0x70, 0xB7, 0x5B, 0x40, 0xAA,
+    0xB0, 0x8E, 0xEB, 0x18, 0xC4, 0x9D, 0xB9, 0x99, 0x56, 0xDA, 0x80, 0xD7,
+    0x49, 0x00, 0x56, 0xDA, 0xC0, 0xD7, 0x5B, 0x40, 0x69, 0x60, 0xE9, 0x24,
+    0x80, 0xB6, 0xDB, 0xC0, 0xB6, 0xD4, 0x80, 0x8C, 0x63, 0x5A, 0xA8, 0xB5,
+    0x2B, 0x40, 0xB6, 0xA4, 0x80, 0xD6, 0xB0, 0xEA, 0xB0, 0x91, 0x22, 0x40,
+    0xD5, 0x70, 0x54, 0xC0, 0x90, 0x76, 0xB0, 0x93, 0x5B, 0x80, 0x69, 0x25,
+    0xDA, 0xC0, 0x57, 0x30, 0x6E, 0xA0, 0x75, 0x9C, 0x93, 0x5B, 0x40, 0xBC,
+    0x45, 0x58, 0x92, 0xEB, 0x40, 0xFC, 0xF5, 0x6B, 0x50, 0xD6, 0xD0, 0x56,
+    0xA0, 0xD6, 0xE8, 0x76, 0xB2, 0xBA, 0x40, 0x66, 0xAE, 0x90, 0xB6, 0xF0,
+    0xB6, 0xE0, 0x8D, 0x6A, 0xA0, 0xA9, 0x50, 0xB5, 0x94, 0xDB, 0x2B, 0x24,
+    0x40, 0xFC, 0x89, 0xA5, 0x00, 0x5A,
+};
+
+static const SmallFontGlyph squeezed6Glyphs[] = {
+    {0, 0, 0, 2, 0, 1}, // ASCII 32
+    {0, 1, 6, 2, 0, -5}, // ASCII 33
+    {1, 3, 2, 4, 0, -5}, // ASCII 34
+    {2, 5, 5, 6, 0, -4}, // ASCII 35
+    {6, 5, 7, 6, 0, -5}, // ASCII 36
+    {11, 3, 6, 4, 0, -5}, // ASCII 37
+    {14, 4, 6, 5, 0, -5}, // ASCII 38
+    {17, 1, 2, 2, 0, -5}, // ASCII 39
+    {18, 2, 6, 3, 0, -5}, // ASCII 40
+    {20, 2, 6, 3, 0, -5}, // ASCII 41
+    {22, 3, 5, 4, 0, -5}, // ASCII 42
+    {24, 3, 3, 4, 0, -4}, // ASCII 43
+    {26, 1, 2, 2, 0, 0}, // ASCII 44
+    {27, 2, 1, 3, 0, -3}, // ASCII 45
+    {28, 1, 1, 2, 0, 0}, // ASCII 46
+    {29, 3, 6, 4, 0, -5}, // ASCII 47
+    {32, 3, 6, 4, 0, -5}, // ASCII 48
+    {35, 2, 6, 3, 0, -5}, // ASCII 49
+    {37, 2, 6, 3, 0, -5}, // ASCII 50
+    {39, 2, 6, 3, 0, -5}, // ASCII 51
+    {41, 3, 6, 4, 0, -5}, // ASCII 52
+    {44, 2, 6, 3, 0, -5}, // ASCII 53
+    {46, 3, 6, 4, 0, -5}, // ASCII 54
+    {49, 3, 6, 4, 0, -5}, // ASCII 55
+    {52, 3, 6, 4, 0, -5}, // ASCII 56
+    {55, 3, 6, 4, 0, -5}, // ASCII 57
+    {58, 1, 3, 2, 0, -3}, // ASCII 58
+    {59, 1, 5, 2, 0, -3}, // ASCII 59
+    {60, 2, 3, 3, 0, -4}, // ASCII 60
+    {61, 2, 3, 3, 0, -4}, // ASCII 61
+    {62, 2, 3, 3, 0, -4}, // ASCII 62
+    {63, 2, 6, 3, 0, -5}, // ASCII 63
+    {65, 4, 6, 5, 0, -5}, // ASCII 64
+    {68, 3, 6, 4, 0, -5}, // ASCII 65
+    {71, 3, 6, 4, 0, -5}, // ASCII 66
+    {74, 2, 6, 3, 0, -5}, // ASCII 67
+    {76, 3, 6, 4, 0, -5}, // ASCII 68
+    {79, 2, 6, 3, 0, -5}, // ASCII 69
+    {81, 2, 6, 3, 0, -5}, // ASCII 70
+    {83, 3, 6, 4, 0, -5}, // ASCII 71
+    {86, 3, 6, 4, 0, -5}, // ASCII 72
+    {89, 1, 6, 2, 0, -5}, // ASCII 73
+    {90, 2, 6, 3, 0, -5}, // ASCII 74
+    {92, 3, 6, 4, 0, -5}, // ASCII 75
+    {95, 2, 6, 3, 0, -5}, // ASCII 76
+    {97, 5, 6, 6, 0, -5}, // ASCII 77
+    {101, 4, 6, 5, 0, -5}, // ASCII 78
+    {104, 3, 6, 4, 0, -5}, // ASCII 79
+    {107, 3, 6, 4, 0, -5}, // ASCII 80
+    {110, 3, 6, 4, 0, -5}, // ASCII 81
+    {113, 3, 6, 4, 0, -5}, // ASCII 82
+    {116, 2, 6, 3, 0, -5}, // ASCII 83
+    {118, 3, 6, 4, 0, -5}, // ASCII 84
+    {121, 3, 6, 4, 0, -5}, // ASCII 85
+    {124, 3, 6, 4, 0, -5}, // ASCII 86
+    {127, 5, 6, 6, 0, -5}, // ASCII 87
+    {131, 3, 6, 4, 0, -5}, // ASCII 88
+    {134, 3, 6, 4, 0, -5}, // ASCII 89
+    {137, 2, 6, 3, 0, -5}, // ASCII 90
+    {139, 2, 6, 3, 0, -5}, // ASCII 91
+    {141, 3, 6, 4, 0, -5}, // ASCII 92
+    {144, 2, 6, 3, 0, -5}, // ASCII 93
+    {146, 3, 2, 4, 0, -5}, // ASCII 94
+    {147, 2, 1, 3, 0, 0}, // ASCII 95
+    {148, 2, 2, 3, 0, -5}, // ASCII 96
+    {149, 3, 4, 4, 0, -3}, // ASCII 97
+    {151, 3, 6, 4, 0, -5}, // ASCII 98
+    {154, 2, 4, 3, 0, -3}, // ASCII 99
+    {155, 3, 6, 4, 0, -5}, // ASCII 100
+    {158, 3, 4, 4, 0, -3}, // ASCII 101
+    {160, 2, 6, 3, 0, -5}, // ASCII 102
+    {162, 3, 5, 4, 0, -3}, // ASCII 103
+    {164, 3, 6, 4, 0, -5}, // ASCII 104
+    {167, 1, 6, 2, 0, -5}, // ASCII 105
+    {168, 2, 7, 3, 0, -5}, // ASCII 106
+    {170, 3, 6, 4, 0, -5}, // ASCII 107
+    {173, 1, 6, 2, 0, -5}, // ASCII 108
+    {174, 5, 4, 6, 0, -3}, // ASCII 109
+    {177, 3, 4, 4, 0, -3}, // ASCII 110
+    {179, 3, 4, 4, 0, -3}, // ASCII 111
+    {181, 3, 5, 4, 0, -3}, // ASCII 112
+    {183, 3, 5, 4, 0, -3}, // ASCII 113
+    {185, 3, 4, 4, 0, -3}, // ASCII 114
+    {187, 2, 4, 3, 0, -3}, // ASCII 115
+    {188, 2, 6, 3, 0, -5}, // ASCII 116
+    {190, 3, 4, 4, 0, -3}, // ASCII 117
+    {192, 3, 4, 4, 0, -3}, // ASCII 118
+    {194, 5, 4, 6, 0, -3}, // ASCII 119
+    {197, 3, 4, 4, 0, -3}, // ASCII 120
+    {199, 3, 5, 4, 0, -3}, // ASCII 121
+    {201, 2, 4, 3, 0, -3}, // ASCII 122
+    {202, 3, 6, 4, 0, -5}, // ASCII 123
+    {205, 1, 6, 2, 0, -5}, // ASCII 124
+    {206, 3, 6, 4, 0, -5}, // ASCII 125
+    {209, 4, 2, 5, 0, -5}, // ASCII 126
+};
+
+}  // namespace ui
+}  // namespace mesh
diff --git a/test/fixtures/small_message_font/squeezed6.bdf b/test/fixtures/small_message_font/squeezed6.bdf
new file mode 100644
index 00000000..97f16205
--- /dev/null
+++ b/test/fixtures/small_message_font/squeezed6.bdf
@@ -0,0 +1,1159 @@
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+COMMENT Exported by Fony v1.4.7
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diff --git a/test/fixtures/ssd1306_picopixel/render.cpp b/test/fixtures/ssd1306_picopixel/render.cpp
index f0cbc381..49fb5c03 100644
--- a/test/fixtures/ssd1306_picopixel/render.cpp
+++ b/test/fixtures/ssd1306_picopixel/render.cpp
@@ -1,5 +1,5 @@
 #include <helpers/ui/SSD1306Display.h>
-#include <helpers/ui/Pixel5Text.h>
+#include <helpers/ui/SmallMessageText.h>
 #include <Fonts/Picopixel.h>
 #include <cassert>
 #include <fstream>
@@ -12,8 +12,13 @@ void save(const char* file) {
   f << "P1\n128 64\n";
   for (int y=0;y<64;y++) { for (int x=0;x<128;x++) f << c.getPixel(x,y) << ' '; f << '\n'; }
 }
+class TestSSD1306Display : public SSD1306Display {
+public:
+  void setCanvasSize(int w, int h) { setDimensions(w, h); }
+};
+
 int main(int argc, char** argv) {
-  SSD1306Display d;
+  TestSSD1306Display d;
   assert(d.begin());
   auto& c=*Adafruit_SSD1306::last;
   const char* message="GIANT KILLER: Out on the Mercerwood mesh today, just the V4 and a small battery Checking the smaller font so the rest of this message is visible. 0123456789 END";
@@ -32,7 +37,21 @@ int main(int argc, char** argv) {
 #if UI_SMALL_MESSAGE_FONT == 1
   assert(c.outside==0);
   assert(d.getTextWidth("ABC")==18); // regular driver font untouched
-  mesh::ui::Pixel5Text text(d);
+  mesh::ui::SmallMessageText six(d);
+  assert(six.capitalHeight()==6);
+  for (int ch=32;ch<=126;ch++) {
+    d.startFrame(); six.setCursor(0,0);
+    const std::string glyph(1,char(ch));
+    six.print(glyph.c_str());
+    // Compared with the independent upstream BDF in the Python harness.
+    std::cout << "six " << ch << ' ' << six.getTextWidth(glyph.c_str()) << ' ';
+    for (int y=0;y<8;y++) for (int x=0;x<8;x++)
+      std::cout << int(c.getPixel(x,y));
+    std::cout << '\n';
+  }
+  d.setCanvasSize(72,40);
+  mesh::ui::SmallMessageText text(d);
+  assert(text.capitalHeight()==5);
   GFXcanvas1 reference(128,64);
   reference.setFont(&Picopixel);
   reference.setTextColor(1);
@@ -44,6 +63,6 @@ int main(int argc, char** argv) {
       assert(c.getPixel(x,y)==reference.getPixel(x,y));
     assert(text.getTextWidth(std::string(1,char(ch)).c_str())==PicopixelGlyphs[ch-32].xAdvance);
   }
-  std::cout << "95 glyphs match Adafruit GFX Picopixel pixel for pixel; normal font preserved\n";
+  std::cout << "95 tiny-screen glyphs match Adafruit GFX Picopixel; normal font preserved\n";
 #endif
 }
diff --git a/test/test_display_driver/test_display_driver.cpp b/test/test_display_driver/test_display_driver.cpp
index f52f67d5..e6afb2de 100644
--- a/test/test_display_driver/test_display_driver.cpp
+++ b/test/test_display_driver/test_display_driver.cpp
@@ -3,7 +3,7 @@
 #include <helpers/ui/DisplayDriver.h>
 #include <helpers/ui/CompanionHomeLayout.h>
 #include <helpers/ui/DisplayTextLayout.h>
-#include <helpers/ui/Pixel5Text.h>
+#include <helpers/ui/SmallMessageText.h>
 #include <helpers/ui/WiFiSetupQrDisplay.h>
 #include <helpers/ui/WiFiSetupQrPayload.h>
 
@@ -134,9 +134,9 @@ TEST(DisplayDriver, EllipsizesOnlyAtUTF8CodepointBoundaries) {
   EXPECT_TRUE(isValidUTF8(display.printed.c_str()));
 }
 
-TEST(Pixel5Text, CapitalsAreFivePixelsAndNormalFontIsUntouched) {
-  TestDisplay display(128, 64, 6);
-  mesh::ui::Pixel5Text text(display);
+TEST(SmallMessageText, TinyPanelsKeepFivePixelCapitalsAndNormalFont) {
+  TestDisplay display(72, 40, 6);
+  mesh::ui::SmallMessageText text(display);
   text.setCursor(0, 0);
   text.print("A");
   const char* rows[] = {"010", "101", "111", "101", "101"};
@@ -152,7 +152,41 @@ TEST(Pixel5Text, CapitalsAreFivePixelsAndNormalFontIsUntouched) {
   EXPECT_EQ(18, display.getTextWidth("ABC"));
 }
 
-TEST(Pixel5Text, CompactOriginAllowsSixCompleteMessageRows) {
+TEST(SmallMessageText, LargerPanelsUseSixPixelCapitalsAndNormalFont) {
+  TestDisplay display(128, 64, 6);
+  mesh::ui::SmallMessageText text(display);
+  text.setCursor(0, 0);
+  text.print("A");
+  const char* rows[] = {"010", "101", "111", "101", "101", "101"};
+  bool pixels[6][3] = {};
+  for (const auto& pixel : display.fills) {
+    ASSERT_GE(pixel.x, 0); ASSERT_LT(pixel.x, 3);
+    ASSERT_GE(pixel.y, 0); ASSERT_LT(pixel.y, 6);
+    pixels[pixel.y][pixel.x] = true;
+  }
+  for (int y = 0; y < 6; ++y) for (int x = 0; x < 3; ++x)
+    EXPECT_EQ(rows[y][x] == '1', pixels[y][x]);
+  EXPECT_EQ(11, text.getTextWidth("ABC"));
+  EXPECT_EQ(18, display.getTextWidth("ABC"));
+}
+
+TEST(SmallMessageText, FontChoiceAndLineSpacingFollowPanelGeometry) {
+  const int cases[][3] = {
+      {128, 64, 6}, {64, 128, 6}, {160, 80, 6},
+      {72, 40, 5}, {40, 72, 5}, {128, 32, 5}, {32, 128, 5},
+      {64, 48, 5}, {48, 64, 5}};
+  for (const auto& dimensions : cases) {
+    TestDisplay display(dimensions[0], dimensions[1]);
+    mesh::ui::SmallMessageText text(display);
+    EXPECT_EQ(dimensions[2], text.capitalHeight());
+    EXPECT_EQ(dimensions[2] + 1, text.glyphHeight());
+    EXPECT_EQ(dimensions[2] + 2, text.lineHeight());
+    EXPECT_EQ(0, text.lineCount(display.height() - text.glyphHeight() + 1));
+    EXPECT_EQ(1, text.lineCount(display.height() - text.glyphHeight()));
+  }
+}
+
+TEST(SmallMessageText, CompactOriginAllowsFiveCompleteSixPixelMessageRows) {
   TestDisplay display(128, 64);
   mesh::ui::drawSmallMessageBody(display, std::string(61, 'W').c_str(),
                                  std::string(160, 'W').c_str());
@@ -162,33 +196,87 @@ TEST(Pixel5Text, CompactOriginAllowsSixCompleteMessageRows) {
     EXPECT_GE(pixel.x, 0); EXPECT_LT(pixel.x, 128);
     EXPECT_GE(pixel.y, 14); EXPECT_LT(pixel.y, 64);
     // The origin stays in its own line; its long name cannot cover the body.
-    EXPECT_TRUE(pixel.y < 20 || pixel.y >= 21);
+    EXPECT_TRUE(pixel.y < 21 || pixel.y >= 22);
     for (int i = 0; i < 3; ++i)
-      if (pixel.y == 60 && pixel.x == 120 + 2 * i) final_dots[i] = true;
+      if (pixel.y == 59 && pixel.x == 120 + 2 * i) final_dots[i] = true;
   }
   for (bool dot : final_dots) EXPECT_TRUE(dot);
-  EXPECT_EQ(5, mesh::ui::smallMessageLineCount(64, 25));
-  EXPECT_EQ(6, mesh::ui::smallMessageLineCount(64, 21));
-  EXPECT_EQ(3, mesh::ui::smallMessageLineCount(40, 17));
-  EXPECT_EQ(0, mesh::ui::smallMessageLineCount(64, 59));
+  mesh::ui::SmallMessageText text(display);
+  EXPECT_EQ(5, text.lineCount(22));
+  EXPECT_EQ(4, text.lineCount(22, 56));
+  EXPECT_EQ(5, text.lineCount(22, 80)); // never extend past the panel
+  EXPECT_EQ(0, text.lineCount(22, 20));
 }
 
-TEST(Pixel5Text, GlyphsStayInsideTinyAndRotatedScreens) {
-  for (auto dimensions : {std::pair<int, int>{72, 40}, {64, 128}, {128, 64}}) {
+TEST(SmallMessageText, TinyInterfaceKeepsThreeCompleteFivePixelRows) {
+  TestDisplay display(72, 40);
+  mesh::ui::SmallMessageText text(display);
+  EXPECT_EQ(3, text.lineCount(17));
+  mesh::ui::drawSmallMessageBody(display, std::string(61, 'W').c_str(),
+                               std::string(160, 'W').c_str(), 10);
+  bool final_dots[3] = {};
+  for (const auto& pixel : display.fills) {
+    EXPECT_GE(pixel.x, 0); EXPECT_LT(pixel.x, 72);
+    EXPECT_GE(pixel.y, 10); EXPECT_LT(pixel.y, 40);
+    EXPECT_TRUE(pixel.y < 16 || pixel.y >= 17);
+    for (int i = 0; i < 3; ++i)
+      if (pixel.y == 35 && pixel.x == 60 + 2 * i) final_dots[i] = true;
+  }
+  for (bool dot : final_dots) EXPECT_TRUE(dot);
+}
+
+TEST(SmallMessageText, MessageBodyRespectsReservedFooter) {
+  TestDisplay display(128, 64);
+  mesh::ui::drawSmallMessageBody(display, "Ch 0 Public [4h]:",
+                               std::string(160, 'W').c_str(), 14, 56);
+  ASSERT_FALSE(display.fills.empty());
+  for (const auto& pixel : display.fills) EXPECT_LT(pixel.y, 56);
+}
+
+TEST(SmallMessageText, Full160CharacterSamplesFitInFiveRows) {
+  class RecordingText : public mesh::ui::SmallMessageText {
+  public:
+    std::string drawn;
+    explicit RecordingText(DisplayDriver& display) : SmallMessageText(display) {}
+    void print(const char* str) override {
+      drawn += str;
+      SmallMessageText::print(str);
+    }
+  };
+  const char* samples[] = {
+      "GIANT KILLER: Out on the Mercerwood mesh today, just the V4 and a small "
+      "battery Checking the smaller font so the rest of this message is visible. "
+      "0123456789 END",
+      "NimBLE-XIAO-Trial: Picopixel: 5 pixel letters and a compact channel line. "
+      "More of this message now fits on the small screen. "
+      "0123456789 0123456789 012345678 END"};
+  for (const char* sample : samples) {
+    ASSERT_EQ(160U, strlen(sample));
+    TestDisplay display(128, 64);
+    RecordingText text(display);
+    EXPECT_EQ(5, mesh::ui::drawTextWrapped(text, 0, 22, 128,
+        text.lineHeight(), text.lineCount(22), sample));
+    EXPECT_EQ(sample, text.drawn);
+  }
+}
+
+TEST(SmallMessageText, GlyphsStayInsideTinyAndRotatedScreens) {
+  for (auto dimensions : {std::pair<int, int>{72, 40}, {40, 72},
+                         {128, 32}, {32, 128}, {64, 128}, {128, 64}}) {
     TestDisplay display(dimensions.first, dimensions.second);
-    mesh::ui::Pixel5Text text(display);
+    mesh::ui::SmallMessageText text(display);
     for (int c = 32; c <= 126; ++c) {
       display.fills.clear();
-      text.setCursor(0, display.height() - 6);
+      text.setCursor(0, display.height() - text.glyphHeight());
       text.printWordWrap(std::string(160, char(c)).c_str(), display.width());
       for (const auto& pixel : display.fills) {
         EXPECT_GE(pixel.x, 0); EXPECT_LT(pixel.x, display.width());
-        EXPECT_GE(pixel.y, display.height() - 6);
+        EXPECT_GE(pixel.y, display.height() - text.glyphHeight());
         EXPECT_LT(pixel.y, display.height());
       }
     }
     display.fills.clear();
-    text.setCursor(0, display.height() - 5);
+    text.setCursor(0, display.height() - text.glyphHeight() + 1);
     text.printWordWrap("must not start a clipped final line", display.width());
     EXPECT_TRUE(display.fills.empty());
   }
diff --git a/test/test_ssd1306_picopixel.py b/test/test_ssd1306_picopixel.py
index ff649907..61cc787e 100644
--- a/test/test_ssd1306_picopixel.py
+++ b/test/test_ssd1306_picopixel.py
@@ -3,11 +3,13 @@
 
 Build a V4 environment first to install Adafruit GFX, or point
 MESHCORE_GFX_LIBRARY to that library's directory. Only the hardware panel,
-Arduino strings and Print glue are replaced; the shared pixel renderer is compared with the original Adafruit font.
+Arduino strings and Print glue are replaced. Picopixel is compared with the
+original Adafruit font; Squeezed Regular 6 with its upstream BDF glyphs.
 """
 
 import os
 from pathlib import Path
+import re
 import subprocess
 import tempfile
 import unittest
@@ -16,7 +18,28 @@ ROOT = Path(__file__).resolve().parents[1]
 FIXTURE = ROOT / "test/fixtures/ssd1306_picopixel"
 
 
-class SSD1306PicopixelTest(unittest.TestCase):
+class SSD1306SmallMessageFontTest(unittest.TestCase):
+    def assert_squeezed_glyphs_match_upstream(self, output):
+        rendered = {}
+        for line in output.splitlines():
+            if line.startswith("six "):
+                _, code, advance, pixels = line.split()
+                rendered[int(code)] = (int(advance), pixels)
+        self.assertEqual(set(rendered), set(range(32, 127)))
+        source = (ROOT / "test/fixtures/small_message_font/squeezed6.bdf").read_text()
+        for entry in source.split("STARTCHAR ")[1:]:
+            code = int(re.search(r"^ENCODING (\d+)", entry, re.M)[1])
+            advance = int(re.search(r"^DWIDTH (\d+)", entry, re.M)[1])
+            w, h, x, y = map(int, re.search(r"^BBX (.+)$", entry, re.M)[1].split())
+            rows = entry.split("BITMAP\n", 1)[1].split("ENDCHAR", 1)[0].splitlines()
+            expected = ["0"] * 64
+            for row, bits in enumerate(rows):
+                for col in range(w):
+                    if int(bits, 16) & (1 << (len(bits) * 4 - 1 - col)):
+                        expected[(6 - h - y + row) * 8 + x + col] = "1"
+            with self.subTest(glyph=chr(code)):
+                self.assertEqual(rendered[code], (advance, "".join(expected)))
+
     def test_actual_font_bounds_wrapping_and_default_font_restoration(self):
         configured = os.environ.get("MESHCORE_GFX_LIBRARY")
         candidates = [Path(configured)] if configured else sorted(
@@ -29,7 +52,7 @@ class SSD1306PicopixelTest(unittest.TestCase):
 
         with tempfile.TemporaryDirectory(prefix="meshcore-picopixel-") as temp:
             for enabled in (0, 1):
-                with self.subTest(picopixel=enabled):
+                with self.subTest(small_message_font=enabled):
                     binary = Path(temp) / f"render-{enabled}"
                     result = subprocess.run([
                         "c++", "-std=c++17", "-g",
@@ -45,6 +68,8 @@ class SSD1306PicopixelTest(unittest.TestCase):
                     result = subprocess.run(
                         [str(binary)], text=True, capture_output=True)
                     self.assertEqual(result.returncode, 0, result.stderr)
+                    if enabled:
+                        self.assert_squeezed_glyphs_match_upstream(result.stdout)
 
 
 if __name__ == "__main__":