diff --git a/CHANGELOG.md b/CHANGELOG.md
index 70d58733..65ea7704 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -29,6 +29,7 @@ New rendering features:
   * The "Show/hide outlines" button is now independent from "Show/hide edges".
 
 Other new features:
+  * New command-line interface, for batch exporting and more.
   * New command for measuring total length of selected entities,
     "Analyze → Measure Perimeter".
   * New link to match the on-screen size of the sketch with its actual size,
diff --git a/appveyor.yml b/appveyor.yml
index 5533b176..38a090a0 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -9,28 +9,22 @@ before_build:
   - cmake -G"Visual Studio 12" -T v120 ..
 build_script:
   - msbuild "src\solvespace.vcxproj" /verbosity:minimal /property:Configuration=%BUILD_TYPE% /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll"
-  - msbuild "test\solvespace_testsuite.vcxproj" /verbosity:minimal /property:Configuration=%BUILD_TYPE% /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll"
+  - msbuild "src\solvespace-cli.vcxproj" /verbosity:minimal /property:Configuration=%BUILD_TYPE% /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll"
+  - msbuild "test\solvespace-testsuite.vcxproj" /verbosity:minimal /property:Configuration=%BUILD_TYPE% /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll"
 test_script:
-  - bin\%BUILD_TYPE%\solvespace_testsuite.exe
+  - bin\%BUILD_TYPE%\solvespace-testsuite.exe
 artifacts:
   - path: build\bin\%BUILD_TYPE%\solvespace.exe
     name: solvespace.exe
+  - path: build\bin\%BUILD_TYPE%\solvespace-cli.exe
+    name: solvespace-cli.exe
   - path: build\bin\%BUILD_TYPE%\solvespace.pdb
     name: solvespace.pdb
 deploy:
-  # Releases to solvespace/solvespace
   - provider: GitHub
     auth_token:
       secure: P9/pf2nM+jlWKe7pCjMp41HycBNP/+5AsmE/TETrDUoBOa/9WFHelqdVFrbRn9IC
     description: ""
-    artifact: solvespace.exe
-    on:
-      appveyor_repo_tag: true
-  # Releases to whitequark/solvespace (to be removed)
-  - provider: GitHub
-    auth_token:
-      secure: Flqxu1cz6PyxVT1wzTP4bSrQOY8wFrO7pJxYxvjEkLqIUU4dsDQrs2rac/A9deet
-    description: ""
-    artifact: solvespace.exe
+    artifact: solvespace.exe,solvespace-cli.exe,solvespace.pdb
     on:
       appveyor_repo_tag: true
diff --git a/bench/CMakeLists.txt b/bench/CMakeLists.txt
index 18e57364..26172f16 100644
--- a/bench/CMakeLists.txt
+++ b/bench/CMakeLists.txt
@@ -5,12 +5,13 @@ foreach(pkg_config_lib CAIRO)
     link_directories(${${pkg_config_lib}_LIBRARY_DIRS})
 endforeach()
 
-add_executable(solvespace_benchmark
+add_executable(solvespace-benchmark
     harness.cpp
     $<TARGET_PROPERTY:resources,EXTRA_SOURCES>)
 
-target_link_libraries(solvespace_benchmark
-    solvespace_headless)
+target_link_libraries(solvespace-benchmark
+    solvespace-core
+    solvespace-headless)
 
-add_dependencies(solvespace_benchmark
+add_dependencies(solvespace-benchmark
     resources)
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 91cfe792..de95913a 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -127,7 +127,7 @@ endif()
 
 # solvespace library
 
-set(solvespace_cad_HEADERS
+set(solvespace_core_HEADERS
     config.h
     dsc.h
     expr.h
@@ -139,7 +139,7 @@ set(solvespace_cad_HEADERS
     render/gl2shader.h
     srf/surface.h)
 
-set(solvespace_cad_SOURCES
+set(solvespace_core_SOURCES
     bsp.cpp
     clipboard.cpp
     confscreen.cpp
@@ -186,16 +186,16 @@ set(solvespace_cad_SOURCES
     srf/surfinter.cpp
     srf/triangulate.cpp)
 
-set(solvespace_cad_gl_SOURCES
+set(solvespace_core_gl_SOURCES
     export.cpp
     solvespace.cpp)
 
-add_library(solvespace_cad STATIC
+add_library(solvespace-core STATIC
     ${util_SOURCES}
-    ${solvespace_cad_HEADERS}
-    ${solvespace_cad_SOURCES})
+    ${solvespace_core_HEADERS}
+    ${solvespace_core_SOURCES})
 
-target_link_libraries(solvespace_cad
+target_link_libraries(solvespace-core
     dxfrw
     ${util_LIBRARIES}
     ${ZLIB_LIBRARY}
@@ -203,13 +203,13 @@ target_link_libraries(solvespace_cad
     ${FREETYPE_LIBRARY}
     ${Backtrace_LIBRARIES})
 
-target_compile_options(solvespace_cad
+target_compile_options(solvespace-core
     PRIVATE ${COVERAGE_FLAGS})
 
-# solvespace gui executable
+# solvespace graphical executable
 
 add_executable(solvespace WIN32 MACOSX_BUNDLE
-    ${solvespace_cad_gl_SOURCES}
+    ${solvespace_core_gl_SOURCES}
     ${platform_SOURCES}
     $<TARGET_PROPERTY:resources,EXTRA_SOURCES>)
 
@@ -217,69 +217,93 @@ add_dependencies(solvespace
     resources)
 
 target_link_libraries(solvespace
-    solvespace_cad
+    solvespace-core
     ${OPENGL_LIBRARIES}
     ${platform_LIBRARIES}
     ${COVERAGE_LIBRARY})
 
-if(WIN32 AND NOT MINGW)
+if(MSVC)
     set_target_properties(solvespace PROPERTIES
         LINK_FLAGS "/MANIFEST:NO /SAFESEH:NO")
 endif()
 
-if(APPLE)
-    foreach(lib ${platform_BUNDLED_LIBS})
-        get_filename_component(name ${lib} NAME)
-        set(target ${CMAKE_CURRENT_BINARY_DIR}/solvespace.app/Contents/MacOS/${name})
-
-        execute_process(COMMAND otool -D ${lib}
-            OUTPUT_VARIABLE canonical_lib OUTPUT_STRIP_TRAILING_WHITESPACE)
-        string(REGEX REPLACE "^.+:\n" "" canonical_lib ${canonical_lib})
-        add_custom_command(TARGET solvespace POST_BUILD
-            COMMAND ${CMAKE_COMMAND} -E copy ${lib} ${target}
-            COMMAND install_name_tool -change ${canonical_lib} @executable_path/${name}
-                    $<TARGET_FILE:solvespace>
-            COMMENT "Bundling shared library ${lib}"
-            VERBATIM)
-    endforeach()
-
-    set(bundle solvespace)
-    add_custom_command(OUTPUT ${CMAKE_BINARY_DIR}/${bundle}.dmg
-        COMMAND ${CMAKE_COMMAND} -E remove ${CMAKE_BINARY_DIR}/${bundle}.dmg
-        COMMAND hdiutil create -srcfolder ${CMAKE_CURRENT_BINARY_DIR}/${bundle}.app
-                ${CMAKE_BINARY_DIR}/${bundle}.dmg
-        DEPENDS $<TARGET_FILE:${bundle}>
-        COMMENT "Building ${bundle}.dmg"
-        VERBATIM)
-    add_custom_target(${bundle}-dmg ALL
-        DEPENDS ${CMAKE_BINARY_DIR}/${bundle}.dmg)
-endif()
-
-if(NOT WIN32)
-    install(TARGETS solvespace
-        RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-        BUNDLE  DESTINATION .)
-endif()
-
 # solvespace headless library
 
 set(headless_SOURCES
     platform/headless.cpp
     render/rendercairo.cpp)
 
-add_library(solvespace_headless STATIC EXCLUDE_FROM_ALL
-    ${solvespace_cad_gl_SOURCES}
+add_library(solvespace-headless STATIC EXCLUDE_FROM_ALL
+    ${solvespace_core_gl_SOURCES}
     ${headless_SOURCES})
 
-target_compile_definitions(solvespace_headless
+target_compile_definitions(solvespace-headless
     PRIVATE -DHEADLESS)
 
-target_include_directories(solvespace_headless
+target_include_directories(solvespace-headless
     INTERFACE ${CMAKE_CURRENT_SOURCE_DIR})
 
-target_link_libraries(solvespace_headless
-    solvespace_cad
+target_link_libraries(solvespace-headless
+    solvespace-core
     ${CAIRO_LIBRARIES})
 
-target_compile_options(solvespace_headless
+target_compile_options(solvespace-headless
     PRIVATE ${COVERAGE_FLAGS})
+
+# solvespace command-line executable
+
+add_executable(solvespace-cli
+    platform/climain.cpp
+    $<TARGET_PROPERTY:resources,EXTRA_SOURCES>)
+
+target_link_libraries(solvespace-cli
+    solvespace-core
+    solvespace-headless)
+
+add_dependencies(solvespace-cli
+    resources)
+
+# solvespace unix package
+
+if(NOT (WIN32 OR APPLE))
+    install(TARGETS solvespace solvespace-cli
+        RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
+endif()
+
+# solvespace macOS package
+
+if(APPLE)
+    set(bundle     solvespace)
+    set(bundle_bin ${EXECUTABLE_OUTPUT_PATH}/${bundle}.app/Contents/MacOS)
+
+    add_custom_command(TARGET solvespace POST_BUILD
+        COMMAND ${CMAKE_COMMAND} -E copy $<TARGET_FILE:solvespace-cli> ${bundle_bin}
+        COMMENT "Bundling executable solvespace-cli"
+        VERBATIM)
+
+    foreach(lib ${platform_BUNDLED_LIBS})
+        get_filename_component(name ${lib} NAME)
+
+        execute_process(COMMAND otool -D ${lib}
+            OUTPUT_VARIABLE canonical_lib OUTPUT_STRIP_TRAILING_WHITESPACE)
+        string(REGEX REPLACE "^.+:\n" "" canonical_lib ${canonical_lib})
+        add_custom_command(TARGET ${bundle} POST_BUILD
+            COMMAND ${CMAKE_COMMAND} -E copy ${lib} ${bundle_bin}/${name}
+            COMMAND install_name_tool -change ${canonical_lib} @executable_path/${name}
+                    $<TARGET_FILE:${bundle}>
+            COMMAND install_name_tool -change ${canonical_lib} @executable_path/${name}
+                    $<TARGET_FILE:solvespace-cli>
+            COMMENT "Bundling shared library ${lib}"
+            VERBATIM)
+    endforeach()
+
+    add_custom_command(OUTPUT ${EXECUTABLE_OUTPUT_PATH}/${bundle}.dmg
+        COMMAND ${CMAKE_COMMAND} -E remove ${EXECUTABLE_OUTPUT_PATH}/${bundle}.dmg
+        COMMAND hdiutil create -srcfolder ${EXECUTABLE_OUTPUT_PATH}/${bundle}.app
+                ${EXECUTABLE_OUTPUT_PATH}/${bundle}.dmg
+        DEPENDS $<TARGET_FILE:${bundle}>
+        COMMENT "Building ${bundle}.dmg"
+        VERBATIM)
+    add_custom_target(${bundle}-dmg ALL
+        DEPENDS ${EXECUTABLE_OUTPUT_PATH}/${bundle}.dmg)
+endif()
diff --git a/src/platform/climain.cpp b/src/platform/climain.cpp
new file mode 100644
index 00000000..79b16a62
--- /dev/null
+++ b/src/platform/climain.cpp
@@ -0,0 +1,317 @@
+//-----------------------------------------------------------------------------
+// Our main() function for the command-line interface.
+//
+// Copyright 2016 whitequark
+//-----------------------------------------------------------------------------
+#include "solvespace.h"
+
+namespace SolveSpace {
+    // These are defined in headless.cpp, and aren't exposed in solvespace.h.
+    extern std::shared_ptr<Pixmap> framebuffer;
+}
+
+static void ShowUsage(const char *argv0) {
+    fprintf(stderr, "Usage: %s <command> <options> <filename> [filename...]", argv0);
+//-----------------------------------------------------------------------------> 80 col */
+    fprintf(stderr, R"(
+    When run, performs an action specified by <command> on every <filename>.
+
+    Common options:
+    -o, --output <pattern>
+        For an input file <basename>.slvs, replaces the '%%' symbol in <pattern>
+        with <basename> and uses it as output file. For example, when using
+        --output %%-2d.png for input files a.slvs and b.slvs, output files
+        a-2d.png and b-2d.png will be written.
+    -v, --view <direction>
+        Selects the camera direction. <direction> can be one of "top", "bottom",
+        "left", "right", "front", "back", or "isometric".
+    -t, --chord-tol <tolerance>
+        Selects the chord tolerance, used for converting exact curves to
+        piecewise linear, and exact surfaces into triangle meshes.
+        For export commands, the unit is mm, and the default is 1.0 mm.
+        For non-export commands, the unit is %%, and the default is 1.0 %%.
+
+    Commands:
+    thumbnail --output <pattern> --size <size> --view <direction>
+              [--chord-tol <tolerance>]
+        Outputs a rendered view of the sketch, like the SolveSpace GUI would.
+        <size> is <width>x<height>, in pixels. Graphics acceleration is
+        not used, and the output may look slightly different from the GUI.
+    export-view --output <pattern> --view <direction> [--chord-tol <tolerance>]
+        Exports a view of the sketch, in a 2d vector format.
+    export-wireframe --output <pattern> [--chord-tol <tolerance>]
+        Exports a wireframe of the sketch, in a 3d vector format.
+    export-mesh --output <pattern> [--chord-tol <tolerance>]
+        Exports a triangle mesh of solids in the sketch, with exact surfaces
+        being triangulated first.
+    export-surfaces --output <pattern>
+        Exports exact surfaces of solids in the sketch, if any.
+)");
+
+    auto FormatListFromFileFilter = [](const FileFilter *filter) {
+        std::string descr;
+        while(filter->name) {
+            descr += "\n        ";
+            descr += filter->name;
+            descr += " (";
+            const char *const *patterns = filter->patterns;
+            while(*patterns) {
+                descr += *patterns;
+                if(*++patterns) {
+                    descr += ", ";
+                }
+            }
+            descr += ")";
+            filter++;
+        }
+        return descr;
+    };
+
+    fprintf(stderr, R"(
+    File formats:
+    thumbnail:%s
+    export-view:%s
+    export-wireframe:%s
+    export-mesh:%s
+    export-surfaces:%s
+)", FormatListFromFileFilter(PngFileFilter).c_str(),
+    FormatListFromFileFilter(VectorFileFilter).c_str(),
+    FormatListFromFileFilter(Vector3dFileFilter).c_str(),
+    FormatListFromFileFilter(MeshFileFilter).c_str(),
+    FormatListFromFileFilter(SurfaceFileFilter).c_str());
+}
+
+static bool RunCommand(size_t argc, char **argv) {
+    if(argc < 2) return false;
+
+    std::function<void(const std::string &)> runner;
+
+    std::vector<std::string> inputFiles;
+    auto ParseInputFile = [&](size_t &argn) {
+        std::string arg = argv[argn];
+        if(arg[0] != '-') {
+            inputFiles.push_back(arg);
+            return true;
+        } else return false;
+    };
+
+    std::string outputPattern;
+    auto ParseOutputPattern = [&](size_t &argn) {
+        if(argn + 1 < argc && (!strcmp(argv[argn], "--output") ||
+                               !strcmp(argv[argn], "-o"))) {
+            argn++;
+            outputPattern = argv[argn];
+            return true;
+        } else return false;
+    };
+
+    Vector projUp, projRight;
+    auto ParseViewDirection = [&](size_t &argn) {
+        if(argn + 1 < argc && (!strcmp(argv[argn], "--view") ||
+                               !strcmp(argv[argn], "-v"))) {
+            argn++;
+            if(!strcmp(argv[argn], "top")) {
+                projRight = Vector::From(1, 0, 0);
+                projUp    = Vector::From(0, 1, 0);
+            } else if(!strcmp(argv[argn], "bottom")) {
+                projRight = Vector::From(-1, 0, 0);
+                projUp    = Vector::From(0, 1, 0);
+            } else if(!strcmp(argv[argn], "left")) {
+                projRight = Vector::From(0, 1, 0);
+                projUp    = Vector::From(0, 0, 1);
+            } else if(!strcmp(argv[argn], "right")) {
+                projRight = Vector::From(0, -1, 0);
+                projUp    = Vector::From(0, 0, 1);
+            } else if(!strcmp(argv[argn], "front")) {
+                projRight = Vector::From(-1, 0, 0);
+                projUp    = Vector::From(0, 0, 1);
+            } else if(!strcmp(argv[argn], "back")) {
+                projRight = Vector::From(1, 0, 0);
+                projUp    = Vector::From(0, 0, 1);
+            } else if(!strcmp(argv[argn], "isometric")) {
+                projRight = Vector::From(0.707,  0.000, -0.707);
+                projUp    = Vector::From(-0.408, 0.816, -0.408);
+            } else {
+                fprintf(stderr, "Unrecognized view direction '%s'\n", argv[argn]);
+            }
+            return true;
+        } else return false;
+    };
+
+    double chordTol = 1.0;
+    auto ParseChordTolerance = [&](size_t &argn) {
+        if(argn + 1 < argc && (!strcmp(argv[argn], "--chord-tol") ||
+                               !strcmp(argv[argn], "-t"))) {
+            argn++;
+            if(sscanf(argv[argn], "%lf", &chordTol) == 1) {
+                return true;
+            } else return false;
+        } else return false;
+    };
+
+    if(!strcmp(argv[1], "thumbnail")) {
+        unsigned width, height;
+        auto ParseSize = [&](size_t &argn) {
+            if(argn + 1 < argc && !strcmp(argv[argn], "--size")) {
+                argn++;
+                if(sscanf(argv[argn], "%ux%u", &width, &height) == 2) {
+                    return true;
+                } else return false;
+            } else return false;
+        };
+
+        for(size_t argn = 2; argn < argc; argn++) {
+            if(!(ParseInputFile(argn) ||
+                 ParseOutputPattern(argn) ||
+                 ParseViewDirection(argn) ||
+                 ParseChordTolerance(argn) ||
+                 ParseSize(argn))) {
+                fprintf(stderr, "Unrecognized option '%s'.\n", argv[argn]);
+                return false;
+            }
+        }
+
+        if(width == 0 || height == 0) {
+            fprintf(stderr, "Non-zero viewport size must be specified.\n");
+            return false;
+        }
+
+        if(EXACT(projUp.Magnitude() == 0 || projRight.Magnitude() == 0)) {
+            fprintf(stderr, "View direction must be specified.\n");
+            return false;
+        }
+
+        runner = [&](const std::string &output) {
+            SS.GW.width     = width;
+            SS.GW.height    = height;
+            SS.GW.projRight = projRight;
+            SS.GW.projUp    = projUp;
+            SS.chordTol     = chordTol;
+
+            SS.GW.ZoomToFit(/*includingInvisibles=*/false);
+            SS.GenerateAll();
+            PaintGraphics();
+            framebuffer->WritePng(output, /*flip=*/true);
+        };
+    } else if(!strcmp(argv[1], "export-view")) {
+        for(size_t argn = 2; argn < argc; argn++) {
+            if(!(ParseInputFile(argn) ||
+                 ParseOutputPattern(argn) ||
+                 ParseViewDirection(argn) ||
+                 ParseChordTolerance(argn))) {
+                fprintf(stderr, "Unrecognized option '%s'.\n", argv[argn]);
+                return false;
+            }
+        }
+
+        if(EXACT(projUp.Magnitude() == 0 || projRight.Magnitude() == 0)) {
+            fprintf(stderr, "View direction must be specified.\n");
+            return false;
+        }
+
+        runner = [&](const std::string &output) {
+            SS.GW.projRight   = projRight;
+            SS.GW.projUp      = projUp;
+            SS.exportChordTol = chordTol;
+
+            SS.ExportViewOrWireframeTo(output, /*exportWireframe=*/false);
+        };
+    } else if(!strcmp(argv[1], "export-wireframe")) {
+        for(size_t argn = 2; argn < argc; argn++) {
+            if(!(ParseInputFile(argn) ||
+                 ParseOutputPattern(argn) ||
+                 ParseChordTolerance(argn))) {
+                fprintf(stderr, "Unrecognized option '%s'.\n", argv[argn]);
+                return false;
+            }
+        }
+
+        runner = [&](const std::string &output) {
+            SS.exportChordTol = chordTol;
+
+            SS.ExportViewOrWireframeTo(output, /*exportWireframe=*/true);
+        };
+    } else if(!strcmp(argv[1], "export-mesh")) {
+        for(size_t argn = 2; argn < argc; argn++) {
+            if(!(ParseInputFile(argn) ||
+                 ParseOutputPattern(argn) ||
+                 ParseChordTolerance(argn))) {
+                fprintf(stderr, "Unrecognized option '%s'.\n", argv[argn]);
+                return false;
+            }
+        }
+
+        runner = [&](const std::string &output) {
+            SS.exportChordTol = chordTol;
+
+            SS.ExportMeshTo(output);
+        };
+    } else if(!strcmp(argv[1], "export-surfaces")) {
+        for(size_t argn = 2; argn < argc; argn++) {
+            if(!(ParseInputFile(argn) ||
+                 ParseOutputPattern(argn))) {
+                fprintf(stderr, "Unrecognized option '%s'.\n", argv[argn]);
+                return false;
+            }
+        }
+
+        runner = [&](const std::string &output) {
+            StepFileWriter sfw = {};
+            sfw.ExportSurfacesTo(output);
+        };
+    } else {
+        fprintf(stderr, "Unrecognized command '%s'.\n", argv[1]);
+        return false;
+    }
+
+    if(outputPattern.empty()) {
+        fprintf(stderr, "An output pattern must be specified.\n");
+        return false;
+    } else if(outputPattern.find('%') == std::string::npos && inputFiles.size() > 1) {
+        fprintf(stderr,
+                "Output pattern must include a %% symbol when using multiple inputs!\n");
+        return false;
+    }
+
+    if(inputFiles.size() == 0) {
+        fprintf(stderr, "At least one input file must be specified.\n");
+        return false;
+    }
+
+    for(const std::string &inputFile : inputFiles) {
+        std::string outputFile = outputPattern;
+        size_t replaceAt = outputFile.find('%');
+        if(replaceAt != std::string::npos) {
+            outputFile.replace(replaceAt, 1, Basename(inputFile, /*stripExtension=*/true));
+        }
+
+        SS.Init();
+        if(!SS.LoadFromFile(inputFile)) {
+            fprintf(stderr, "Cannot load '%s'!\n", inputFile.c_str());
+            return false;
+        }
+        SS.AfterNewFile();
+        runner(outputFile);
+        SK.Clear();
+        SS.Clear();
+
+        fprintf(stderr, "Written '%s'.\n", outputFile.c_str());
+    }
+
+    return true;
+}
+
+int main(int argc, char **argv) {
+    InitPlatform();
+
+    if(argc == 1) {
+        ShowUsage(argv[0]);
+        return 0;
+    }
+
+    if(!RunCommand(argc, argv)) {
+        return 1;
+    } else {
+        return 0;
+    }
+}
diff --git a/src/platform/headless.cpp b/src/platform/headless.cpp
index 9be35d08..845eeb0a 100644
--- a/src/platform/headless.cpp
+++ b/src/platform/headless.cpp
@@ -1,5 +1,5 @@
 //-----------------------------------------------------------------------------
-// Our main() function for the headless (no OpenGL) test runner.
+// Our platform support functions for the headless (no OpenGL) test runner.
 //
 // Copyright 2016 whitequark
 //-----------------------------------------------------------------------------
diff --git a/src/platform/unixutil.cpp b/src/platform/unixutil.cpp
index 9594bf07..193694e4 100644
--- a/src/platform/unixutil.cpp
+++ b/src/platform/unixutil.cpp
@@ -96,10 +96,8 @@ void ssremove(const std::string &filename)
 
 static std::string ExpandPath(std::string path) {
     char *expanded_c_path = realpath(path.c_str(), NULL);
-    if(expanded_c_path == NULL) {
-        fprintf(stderr, "realpath(%s): %s\n", path.c_str(), strerror(errno));
-        return "";
-    }
+    if(expanded_c_path == NULL) return "";
+
     std::string expanded_path = expanded_c_path;
     free(expanded_c_path);
     return expanded_path;
diff --git a/src/solvespace.h b/src/solvespace.h
index c6bff08f..d7deda96 100644
--- a/src/solvespace.h
+++ b/src/solvespace.h
@@ -182,7 +182,7 @@ const FileFilter SlvsFileFilter[] = {
 };
 // PNG format bitmap
 const FileFilter PngFileFilter[] = {
-    { "PNG",                        { "png" } },
+    { "PNG file",                   { "png" } },
     { NULL, {} }
 };
 // Triangle mesh
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index fa18451e..ca91188c 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -57,19 +57,19 @@ set(testsuite_SOURCES
     group/translate_nd/test.cpp
 )
 
-add_executable(solvespace_testsuite
+add_executable(solvespace-testsuite
     ${testsuite_SOURCES}
     $<TARGET_PROPERTY:resources,EXTRA_SOURCES>)
 
-target_link_libraries(solvespace_testsuite
-    solvespace_headless
+target_link_libraries(solvespace-testsuite
+    solvespace-headless
     ${COVERAGE_LIBRARY})
 
-add_dependencies(solvespace_testsuite
+add_dependencies(solvespace-testsuite
     resources)
 
-add_custom_target(solvespace-test ALL
-    COMMAND $<TARGET_FILE:solvespace_testsuite>
+add_custom_target(test_solvespace ALL
+    COMMAND $<TARGET_FILE:solvespace-testsuite>
     COMMENT "Testing SolveSpace"
     VERBATIM)
 
@@ -86,11 +86,11 @@ if(ENABLE_COVERAGE)
         OUTPUT  ${CMAKE_CURRENT_BINARY_DIR}/coverage_base.info
         COMMAND ${LCOV} ${LCOV_FLAGS} ${LCOV_COLLECT}
             -o ${CMAKE_BINARY_DIR}/coverage_base.info -i
-        DEPENDS solvespace_testsuite
+        DEPENDS solvespace-testsuite
         COMMENT "Importing baseline coverage data"
         VERBATIM)
 
-    add_custom_target(solvespace-coverage ALL
+    add_custom_target(coverage_solvespace ALL
         COMMAND ${LCOV} ${LCOV_FLAGS} ${LCOV_COLLECT}
             -o ${CMAKE_BINARY_DIR}/coverage_test.info
         COMMAND ${LCOV} ${LCOV_FLAGS}
@@ -104,7 +104,7 @@ if(ENABLE_COVERAGE)
             -o ${CMAKE_BINARY_DIR}/coverage/
             -t "SolveSpace testbench"
         DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/coverage_base.info
-        DEPENDS solvespace-test
+        DEPENDS test_solvespace
         COMMENT "Generating coverage report"
         VERBATIM)
 endif()
diff --git a/test/commit.sh b/test/commit.sh
index bd95b5d2..d49708e6 100755
--- a/test/commit.sh
+++ b/test/commit.sh
@@ -1,7 +1,7 @@
 #!/bin/sh -ex
 
-make -C build solvespace_testsuite
-./build/test/solvespace_testsuite $* || true
+make -C build solvespace-testsuite
+./build/test/solvespace-testsuite $* || true
 for e in slvs png; do
   for i in `find . -name *.out.$e`; do
     mv $i `dirname $i`/`basename $i .out.$e`.$e;
diff --git a/test/harness.cpp b/test/harness.cpp
index e281659c..5a14b76b 100644
--- a/test/harness.cpp
+++ b/test/harness.cpp
@@ -228,7 +228,7 @@ bool Test::Helper::CheckRender(const char *file, int line, const char *reference
 
     std::shared_ptr<Pixmap> refPixmap = Pixmap::ReadPng(refPath.c_str(), /*flip=*/true);
     if(!RecordCheck(refPixmap && refPixmap->Equals(*framebuffer))) {
-        framebuffer->WritePng(outPath.c_str(), /*flip=*/true);
+        framebuffer->WritePng(outPath, /*flip=*/true);
 
         if(!refPixmap) {
             PrintFailure(file, line, "reference render not present");