fast path added

- Add licenses/AGPL-3.0.txt (full license text for scripts/pymupdf_convert.py)
- Update root LICENSE to reference it
- Fix Spotless formatting in PyMuPdfConverter and ExternalAppDepConfig

LICENSE

@@ -10,6 +10,10 @@ if that directory exists, is licensed under the license defined in "app/propriet
 if that directory exists, is licensed under the license defined in "app/saas/LICENSE".
 * All content that resides under the "engine/" directory of this repository,
 if that directory exists, is licensed under the license defined in "engine/LICENSE".
+* "scripts/pymupdf_convert.py", if that file exists, is licensed under the GNU Affero
+General Public License v3.0 (or later) as declared in its file header. It is a separate
+program invoked as an OS subprocess; its license does not extend to other content in
+this repository.
 * All content that resides under the "frontend/src/proprietary/" directory of this repository,
 if that directory exists, is licensed under the license defined in "frontend/src/proprietary/LICENSE".
 * All content that resides under the "frontend/src/desktop/" directory of this repository,

app/common/src/main/java/stirling/software/common/model/ApplicationProperties.java

@@ -1350,6 +1350,10 @@ public class ApplicationProperties {
             public int getFfmpegSessionLimit() {
                 return ffmpegSessionLimit > 0 ? ffmpegSessionLimit : 2;
             }
+
+            public int getPyMuPdfConvertSessionLimit() {
+                return 2;
+            }
         }
 
         @Data
@@ -1427,6 +1431,10 @@ public class ApplicationProperties {
             public long getFfmpegTimeoutMinutes() {
                 return ffmpegTimeoutMinutes > 0 ? ffmpegTimeoutMinutes : 30;
             }
+
+            public long getPyMuPdfConvertTimeoutMinutes() {
+                return 10;
+            }
         }
     }
 }

app/common/src/main/java/stirling/software/common/service/PyMuPdfConverter.java

@@ -0,0 +1,91 @@
+package stirling.software.common.service;
+
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.List;
+import java.util.Locale;
+import java.util.concurrent.TimeUnit;
+
+import org.springframework.stereotype.Service;
+
+import jakarta.annotation.PostConstruct;
+
+import lombok.extern.slf4j.Slf4j;
+
+import stirling.software.common.util.ProcessExecutor;
+
+/**
+ * Converts PDFs to Markdown by invoking the {@code pymupdf-convert} CLI tool as a separate
+ * subprocess.
+ */
+@Slf4j
+@Service
+public class PyMuPdfConverter {
+
+    private boolean available;
+
+    @PostConstruct
+    void init() {
+        available = probe();
+        if (available) {
+            log.info("pymupdf-convert found — PyMuPDF Markdown conversion enabled.");
+        } else {
+            log.info("pymupdf-convert not found — PyMuPDF Markdown conversion disabled.");
+        }
+    }
+
+    public boolean isAvailable() {
+        return available;
+    }
+
+    private boolean probe() {
+        boolean isWindows =
+                System.getProperty("os.name").toLowerCase(Locale.ROOT).contains("windows");
+        List<String> cmd =
+                isWindows
+                        ? List.of("where", "pymupdf-convert")
+                        : List.of("which", "pymupdf-convert");
+        try {
+            Process p = new ProcessBuilder(cmd).redirectErrorStream(true).start();
+            boolean done = p.waitFor(5, TimeUnit.SECONDS);
+            return done && p.exitValue() == 0;
+        } catch (Exception e) {
+            log.debug("pymupdf-convert availability check failed: {}", e.getMessage());
+            return false;
+        }
+    }
+
+    /**
+     * Convert a PDF to Markdown by invoking {@code pymupdf-convert} as a subprocess.
+     *
+     * @throws IOException on process failure or if the tool is not installed
+     */
+    public String convertToMarkdown(byte[] pdfBytes, String filename) throws IOException {
+        String safeName =
+                (filename == null || filename.isBlank())
+                        ? "document.pdf"
+                        : filename.replace("\"", "");
+        Path tempDir = Files.createTempDirectory("stirling-pymupdf-");
+        Path inputPdf = tempDir.resolve(safeName);
+        Path outputMd = tempDir.resolve("output.md");
+        try {
+            Files.write(inputPdf, pdfBytes);
+            ProcessExecutor.getInstance(ProcessExecutor.Processes.PYMUPDF_CONVERT)
+                    .runCommandWithOutputHandling(
+                            List.of(
+                                    "pymupdf-convert",
+                                    inputPdf.toAbsolutePath().toString(),
+                                    outputMd.toAbsolutePath().toString()));
+            return Files.readString(outputMd, StandardCharsets.UTF_8);
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            throw new IOException("PyMuPDF conversion interrupted", e);
+        } finally {
+            Files.deleteIfExists(inputPdf);
+            Files.deleteIfExists(outputMd);
+            Files.deleteIfExists(tempDir);
+        }
+    }
+}

app/common/src/main/java/stirling/software/common/util/PDFToFile.java

@@ -4,6 +4,7 @@ import java.io.File;
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.OutputStream;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.ArrayList;
@@ -30,6 +31,7 @@ import io.github.pixee.security.Filenames;
 import lombok.extern.slf4j.Slf4j;
 
 import stirling.software.common.configuration.RuntimePathConfig;
+import stirling.software.common.service.PyMuPdfConverter;
 import stirling.software.common.util.ProcessExecutor.ProcessExecutorResult;
 
 @Slf4j
@@ -159,6 +161,57 @@ public class PDFToFile {
                 finalOut, fileName, MediaType.APPLICATION_OCTET_STREAM);
     }
 
+    /**
+     * PDF->Markdown with optional PyMuPDF acceleration.
+     *
+     * <p>When {@code pymupdf-convert} is installed and on PATH, conversion is delegated to it as a
+     * subprocess. On any failure — or when the tool is absent — this transparently falls back to
+     * the bundled {@code pdftohtml}-based converter.
+     */
+    public ResponseEntity<Resource> processPdfToMarkdown(
+            MultipartFile inputFile, PyMuPdfConverter pyMuPdfConverter)
+            throws IOException, InterruptedException {
+        if (!MediaType.APPLICATION_PDF_VALUE.equals(inputFile.getContentType())) {
+            return new ResponseEntity<>(HttpStatus.BAD_REQUEST);
+        }
+
+        if (pyMuPdfConverter != null && pyMuPdfConverter.isAvailable()) {
+            try {
+                String originalName = Filenames.toSimpleFileName(inputFile.getOriginalFilename());
+                String baseName = originalName;
+                if (originalName != null && originalName.contains(".")) {
+                    baseName = originalName.substring(0, originalName.lastIndexOf('.'));
+                }
+                String markdown =
+                        pyMuPdfConverter.convertToMarkdown(inputFile.getBytes(), originalName);
+                return buildMarkdownZipResponse(markdown, baseName);
+            } catch (IOException e) {
+                log.warn(
+                        "PyMuPDF conversion failed; falling back to pdftohtml converter: {}",
+                        e.getMessage());
+            }
+        }
+        return processPdfToMarkdown(inputFile);
+    }
+
+    private ResponseEntity<Resource> buildMarkdownZipResponse(String markdown, String pdfBaseName)
+            throws IOException {
+        String fileName = pdfBaseName + "ToMarkdown.zip";
+        TempFile finalOut = tempFileManager.createManagedTempFile(".zip");
+        try (OutputStream fos = Files.newOutputStream(finalOut.getPath());
+                ZipOutputStream zipOutputStream = new ZipOutputStream(fos)) {
+            ZipEntry mdEntry = new ZipEntry(pdfBaseName + ".md");
+            zipOutputStream.putNextEntry(mdEntry);
+            zipOutputStream.write(markdown.getBytes(StandardCharsets.UTF_8));
+            zipOutputStream.closeEntry();
+        } catch (Exception e) {
+            finalOut.close();
+            throw e;
+        }
+        return WebResponseUtils.fileToWebResponse(
+                finalOut, fileName, MediaType.APPLICATION_OCTET_STREAM);
+    }
+
     /**
      * Updates image references in markdown to point to the images/ folder. Matches patterns like
      * ![alt](filename.png) and converts to ![alt](images/filename.png)

app/common/src/main/java/stirling/software/common/util/ProcessExecutor.java

@@ -115,6 +115,11 @@ public class ProcessExecutor {
                                                 .getProcessExecutor()
                                                 .getSessionLimit()
                                                 .getFfmpegSessionLimit();
+                                case PYMUPDF_CONVERT ->
+                                        applicationProperties
+                                                .getProcessExecutor()
+                                                .getSessionLimit()
+                                                .getPyMuPdfConvertSessionLimit();
                             };
 
                     long timeoutMinutes =
@@ -180,6 +185,11 @@ public class ProcessExecutor {
                                                 .getProcessExecutor()
                                                 .getTimeoutMinutes()
                                                 .getFfmpegTimeoutMinutes();
+                                case PYMUPDF_CONVERT ->
+                                        applicationProperties
+                                                .getProcessExecutor()
+                                                .getTimeoutMinutes()
+                                                .getPyMuPdfConvertTimeoutMinutes();
                             };
                     return new ProcessExecutor(
                             processType, semaphoreLimit, liveUpdates, timeoutMinutes);
@@ -550,7 +560,8 @@ public class ProcessExecutor {
         GHOSTSCRIPT,
         OCR_MY_PDF,
         CFF_CONVERTER,
-        FFMPEG
+        FFMPEG,
+        PYMUPDF_CONVERT
     }
 
     @Setter

app/core/src/main/java/stirling/software/SPDF/config/ExternalAppDepConfig.java

@@ -101,6 +101,9 @@ public class ExternalAppDepConfig {
             // Python / OpenCV special handling
             checkPythonAndOpenCV();
 
+            // PyMuPDF optional acceleration
+            checkPyMuPdf();
+
             dependenciesChecked = true;
         } finally {
             endpointConfiguration.logDisabledEndpointsSummary();
@@ -236,6 +239,15 @@ public class ExternalAppDepConfig {
         }
     }
 
+    private void checkPyMuPdf() {
+        if (isCommandAvailable("pymupdf-convert")) {
+            log.warn("pymupdf-convert detected — PDF->Markdown will use PyMuPDF acceleration.");
+        } else {
+            log.info(
+                    "pymupdf-convert not found — PDF->Markdown will use the bundled pdftohtml converter.");
+        }
+    }
+
     private void disablePythonAndOpenCV(String reason) {
         List<String> pythonFeatures = getAffectedFeatures("Python");
         List<String> openCVFeatures = getAffectedFeatures("OpenCV");

app/core/src/main/java/stirling/software/SPDF/model/api/converters/ConvertPDFToMarkdown.java

@@ -15,6 +15,7 @@ import stirling.software.common.annotations.AutoJobPostMapping;
 import stirling.software.common.annotations.api.ConvertApi;
 import stirling.software.common.enumeration.ResourceWeight;
 import stirling.software.common.model.api.PDFFile;
+import stirling.software.common.service.PyMuPdfConverter;
 import stirling.software.common.util.PDFToFile;
 import stirling.software.common.util.TempFileManager;
 
@@ -23,6 +24,7 @@ import stirling.software.common.util.TempFileManager;
 public class ConvertPDFToMarkdown {
 
     private final TempFileManager tempFileManager;
+    private final PyMuPdfConverter pyMuPdfConverter;
 
     @AutoJobPostMapping(
             consumes = MediaType.MULTIPART_FORM_DATA_VALUE,
@@ -37,6 +39,6 @@ public class ConvertPDFToMarkdown {
             throws Exception {
         MultipartFile inputFile = file.getFileInput();
         PDFToFile pdfToFile = new PDFToFile(tempFileManager);
-        return pdfToFile.processPdfToMarkdown(inputFile);
+        return pdfToFile.processPdfToMarkdown(inputFile, pyMuPdfConverter);
     }
 }

app/core/src/test/java/stirling/software/SPDF/model/api/converters/ConvertPDFToMarkdownTest.java

@@ -2,6 +2,7 @@ package stirling.software.SPDF.model.api.converters;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.nullable;
 import static org.mockito.Mockito.*;
 import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.multipart;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;
@@ -23,12 +24,13 @@ import org.springframework.web.bind.annotation.ExceptionHandler;
 import org.springframework.web.bind.annotation.RestControllerAdvice;
 import org.springframework.web.multipart.MultipartFile;
 
+import stirling.software.common.service.PyMuPdfConverter;
 import stirling.software.common.util.PDFToFile;
 
 class ConvertPDFToMarkdownTest {
 
     private MockMvc mockMvc() {
-        return MockMvcBuilders.standaloneSetup(new ConvertPDFToMarkdown(null))
+        return MockMvcBuilders.standaloneSetup(new ConvertPDFToMarkdown(null, null))
                 .setControllerAdvice(new GlobalErrorHandler())
                 .build();
     }
@@ -52,7 +54,9 @@ class ConvertPDFToMarkdownTest {
                 Mockito.mockConstruction(
                         PDFToFile.class,
                         (mock, ctx) -> {
-                            when(mock.processPdfToMarkdown(any(MultipartFile.class)))
+                            when(mock.processPdfToMarkdown(
+                                            any(MultipartFile.class),
+                                            nullable(PyMuPdfConverter.class)))
                                     .thenAnswer(
                                             inv ->
                                                     ResponseEntity.ok()
@@ -83,7 +87,8 @@ class ConvertPDFToMarkdownTest {
             // And that the uploaded file was passed to processPdfToMarkdown()
             PDFToFile created = construction.constructed().get(0);
             ArgumentCaptor<MultipartFile> captor = ArgumentCaptor.forClass(MultipartFile.class);
-            verify(created, times(1)).processPdfToMarkdown(captor.capture());
+            verify(created, times(1))
+                    .processPdfToMarkdown(captor.capture(), nullable(PyMuPdfConverter.class));
             MultipartFile passed = captor.getValue();
 
             // Minimal plausibility checks
@@ -98,7 +103,9 @@ class ConvertPDFToMarkdownTest {
                 Mockito.mockConstruction(
                         PDFToFile.class,
                         (mock, ctx) -> {
-                            when(mock.processPdfToMarkdown(any(MultipartFile.class)))
+                            when(mock.processPdfToMarkdown(
+                                            any(MultipartFile.class),
+                                            nullable(PyMuPdfConverter.class)))
                                     .thenThrow(new RuntimeException("boom"));
                         })) {
 

app/proprietary/src/main/java/stirling/software/proprietary/model/api/ai/AiPdfContentType.java

@@ -32,7 +32,10 @@ public enum AiPdfContentType {
 
     // Heavy content
     COMPLIANCE("compliance"),
-    IMAGES("images");
+    IMAGES("images"),
+
+    // PyMuPDF worker — pre-rendered Markdown
+    PYMUPDF_MARKDOWN("pymupdf_markdown");
 
     private final String value;
 

app/proprietary/src/main/java/stirling/software/proprietary/service/AiWorkflowService.java

@@ -31,6 +31,7 @@ import stirling.software.common.service.CustomPDFDocumentFactory;
 import stirling.software.common.service.FileStorage;
 import stirling.software.common.service.InternalApiClient;
 import stirling.software.common.service.InternalApiTimeoutException;
+import stirling.software.common.service.PyMuPdfConverter;
 import stirling.software.common.service.ToolMetadataService;
 import stirling.software.common.util.ExceptionUtils;
 import stirling.software.common.util.TempFile;
@@ -74,6 +75,7 @@ public class AiWorkflowService {
     private final TempFileManager tempFileManager;
     private final FileIdStrategy fileIdStrategy;
     private final AiEngineEndpointResolver endpointResolver;
+    private final PyMuPdfConverter pyMuPdfConverter;
 
     @FunctionalInterface
     public interface ProgressListener {
@@ -137,6 +139,9 @@ public class AiWorkflowService {
                         ? new ArrayList<>()
                         : new ArrayList<>(request.getConversationHistory()));
         initialRequest.setEnabledEndpoints(endpointResolver.getEnabledEndpointUrls());
+        boolean workerAvailable = pyMuPdfConverter.isAvailable();
+        initialRequest.setPymupdfWorkerAvailable(workerAvailable);
+        log.info("[pymupdf-convert] available={}", workerAvailable);
 
         listener.onProgress(AiWorkflowProgressEvent.of(AiWorkflowPhase.ANALYZING));
 
@@ -183,6 +188,13 @@ public class AiWorkflowService {
                     cannotContinue("AI engine requested content extraction more than once."));
         }
 
+        // Fast path: when the engine identifies a pdf-to-markdown task and pymupdf-convert is
+        // available, skip feeding content back to the engine and convert directly.
+        if ("pdf_to_markdown".equals(response.getResumeWith())
+                && request.isPymupdfWorkerAvailable()) {
+            return runPyMuPdfConversion(filesById, listener);
+        }
+
         List<AiWorkflowFileRequest> requestedFiles = response.getFiles();
 
         // Validate requested file ids before loading anything
@@ -365,6 +377,31 @@ public class AiWorkflowService {
         return new WorkflowState.Terminal(response);
     }
 
+    private WorkflowState runPyMuPdfConversion(
+            Map<String, MultipartFile> filesById, ProgressListener listener) throws IOException {
+        listener.onProgress(AiWorkflowProgressEvent.of(AiWorkflowPhase.PROCESSING));
+        List<Resource> outputs = new ArrayList<>();
+        for (MultipartFile file : filesById.values()) {
+            String baseName =
+                    file.getOriginalFilename() != null
+                            ? file.getOriginalFilename().replaceFirst("\\.[^.]+$", "")
+                            : "document";
+            String markdown =
+                    pyMuPdfConverter.convertToMarkdown(file.getBytes(), file.getOriginalFilename());
+            String safeFilename = Filenames.toSimpleFileName(baseName + ".md");
+            byte[] bytes = markdown.getBytes(java.nio.charset.StandardCharsets.UTF_8);
+            outputs.add(
+                    new org.springframework.core.io.ByteArrayResource(bytes) {
+                        @Override
+                        public String getFilename() {
+                            return safeFilename;
+                        }
+                    });
+        }
+        return new WorkflowState.Terminal(
+                buildCompletedResponse("Converted PDF to Markdown.", outputs, List.of(), null));
+    }
+
     private WorkflowState onGenerateFile(AiWorkflowResponse response, ProgressListener listener)
             throws IOException {
         String content = response.getGeneratedContent();
@@ -745,5 +782,6 @@ public class AiWorkflowService {
         private List<WorkflowArtifact> artifacts = new ArrayList<>();
         private String resumeWith;
         private List<String> enabledEndpoints = new ArrayList<>();
+        private boolean pymupdfWorkerAvailable;
     }
 }

app/proprietary/src/main/java/stirling/software/proprietary/service/PdfContentExtractor.java

@@ -30,6 +30,7 @@ import stirling.software.SPDF.pdf.parser.PdfModels.RawLine;
 import stirling.software.SPDF.pdf.parser.PdfModels.TableFragment;
 import stirling.software.SPDF.pdf.parser.PdfModels.TextFragment;
 import stirling.software.SPDF.pdf.parser.TabulaTableParser;
+import stirling.software.common.service.PyMuPdfConverter;
 import stirling.software.common.util.ExceptionUtils;
 import stirling.software.common.util.PdfUtils;
 import stirling.software.proprietary.model.api.ai.AiPdfContentType;
@@ -44,6 +45,7 @@ public class PdfContentExtractor {
 
     private final TabulaTableParser tabulaTableParser;
     private final PdfIngester pdfIngester;
+    private final PyMuPdfConverter pyMuPdfConverter;
 
     private static final int MAX_CHARACTERS_PER_PAGE = 4_000;
 
@@ -190,6 +192,8 @@ public class PdfContentExtractor {
                             extractText(lf, fileReq, remainingPages, remainingCharacters));
             case PAGE_LAYOUT ->
                     Optional.<PdfContentResult>ofNullable(extractPageLayout(lf, remainingPages));
+            case PYMUPDF_MARKDOWN ->
+                    Optional.<PdfContentResult>ofNullable(extractPyMuPdfMarkdown(lf));
             default -> {
                 log.warn(
                         "Content type {} not yet implemented, skipping for {}",
@@ -255,6 +259,11 @@ public class PdfContentExtractor {
                 artifact.setFiles(results.stream().map(PageLayoutFileResult.class::cast).toList());
                 yield artifact;
             }
+            case PYMUPDF_MARKDOWN -> {
+                PyMuPdfMarkdownArtifact artifact = new PyMuPdfMarkdownArtifact();
+                artifact.setFiles(results.stream().map(PyMuPdfMarkdownResult.class::cast).toList());
+                yield artifact;
+            }
             case TOOL_REPORT ->
                     throw new IllegalArgumentException(
                             "TOOL_REPORT artifacts are not produced by PdfContentExtractor");
@@ -370,7 +379,8 @@ public class PdfContentExtractor {
     enum ArtifactKind {
         EXTRACTED_TEXT("extracted_text"),
         PAGE_LAYOUT("page_layout"),
-        TOOL_REPORT("tool_report");
+        TOOL_REPORT("tool_report"),
+        PYMUPDF_MARKDOWN("pymupdf_markdown");
 
         private final String value;
 
@@ -469,4 +479,46 @@ public class PdfContentExtractor {
         private final ArtifactKind kind = ArtifactKind.PAGE_LAYOUT;
         private List<PageLayoutFileResult> files = new ArrayList<>();
     }
+
+    private PyMuPdfMarkdownResult extractPyMuPdfMarkdown(LoadedFile lf) {
+        try {
+            log.info("[pymupdf-convert] converting file={}", lf.fileName());
+            java.io.ByteArrayOutputStream baos = new java.io.ByteArrayOutputStream();
+            lf.document().save(baos);
+            String markdown = pyMuPdfConverter.convertToMarkdown(baos.toByteArray(), lf.fileName());
+            log.info(
+                    "[pymupdf-convert] success file={} markdown-chars={}",
+                    lf.fileName(),
+                    markdown.length());
+            PyMuPdfMarkdownResult result = new PyMuPdfMarkdownResult();
+            result.setFileName(lf.fileName());
+            result.setMarkdown(markdown);
+            return result;
+        } catch (Exception e) {
+            log.warn(
+                    "[pymupdf-convert] failed for file={}, falling back to page layout: {}",
+                    lf.fileName(),
+                    e.getMessage());
+            return null;
+        }
+    }
+
+    /** PyMuPDF worker pre-rendered Markdown for one file. */
+    @Data
+    static final class PyMuPdfMarkdownResult implements PdfContentResult {
+        private String fileName;
+        private String markdown;
+
+        @Override
+        public ArtifactKind getArtifactKind() {
+            return ArtifactKind.PYMUPDF_MARKDOWN;
+        }
+    }
+
+    /** Artifact carrying PyMuPDF-rendered Markdown for all input files. */
+    @Data
+    static final class PyMuPdfMarkdownArtifact implements WorkflowArtifact {
+        private final ArtifactKind kind = ArtifactKind.PYMUPDF_MARKDOWN;
+        private List<PyMuPdfMarkdownResult> files = new ArrayList<>();
+    }
 }

app/proprietary/src/test/java/stirling/software/proprietary/service/AiWorkflowServiceTest.java

@@ -49,6 +49,7 @@ import stirling.software.common.service.FileStorage;
 import stirling.software.common.service.FileStorage.StoredFile;
 import stirling.software.common.service.InternalApiClient;
 import stirling.software.common.service.InternalApiTimeoutException;
+import stirling.software.common.service.PyMuPdfConverter;
 import stirling.software.common.service.ToolMetadataService;
 import stirling.software.common.util.TempFileManager;
 import stirling.software.common.util.TempFileRegistry;
@@ -85,6 +86,7 @@ class AiWorkflowServiceTest {
     @Mock private ToolMetadataService toolMetadataService;
     @Mock private FileIdStrategy fileIdStrategy;
     @Mock private AiEngineEndpointResolver endpointResolver;
+    @Mock private PyMuPdfConverter pyMuPdfConverter;
 
     @TempDir Path tempDir;
 
@@ -117,7 +119,8 @@ class AiWorkflowServiceTest {
                         toolMetadataService,
                         tempFileManager,
                         fileIdStrategy,
-                        endpointResolver);
+                        endpointResolver,
+                        pyMuPdfConverter);
         when(endpointResolver.getEnabledEndpointUrls()).thenReturn(List.of());
     }
 

docker/base/Dockerfile

@@ -348,12 +348,17 @@ RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
       python3 python3-venv ca-certificates binutils && \
     rm -rf /var/lib/apt/lists/*
 
+COPY scripts/pymupdf_convert.py /tmp/pymupdf_convert.py
+
 RUN --mount=type=cache,target=/root/.cache/pip,sharing=locked \
     python3 -m venv /opt/venv --system-site-packages && \
     /opt/venv/bin/pip install --no-cache-dir --prefer-binary --only-binary=:all: \
       weasyprint pdf2image opencv-python-headless ocrmypdf \
       cryptography \
-      "unoserver==${UNOSERVER_VERSION}" && \
+      "unoserver==${UNOSERVER_VERSION}" \
+      pymupdf pymupdf4llm && \
+    install -m 0755 /tmp/pymupdf_convert.py /usr/local/bin/pymupdf-convert && \
+    rm /tmp/pymupdf_convert.py && \
     find /opt/venv -type d -name __pycache__ -exec rm -rf {} + 2>/dev/null || true && \
     find /opt/venv \( -name '*.pyc' -o -name '*.pyi' \) -delete 2>/dev/null || true && \
     rm -rf /opt/venv/lib/python*/site-packages/pip \
@@ -608,6 +613,8 @@ RUN ldconfig /usr/local/lib && \
       /opt/venv/bin/python -c "import cv2; print('OpenCV', cv2.__version__)" && \
     PYTHONDONTWRITEBYTECODE=1 \
       /opt/venv/bin/python -c "import ocrmypdf; print('ocrmypdf OK')" && \
+    PYTHONDONTWRITEBYTECODE=1 \
+      /opt/venv/bin/python -c "import pymupdf4llm; print('pymupdf4llm OK')" && \
     find /opt/venv -type d -name __pycache__ -exec rm -rf {} + 2>/dev/null || true
 
 # Non-root user
@@ -643,9 +650,9 @@ RUN set -eux; \
     ln -sf /opt/calibre/ebook-convert /usr/bin/ebook-convert; \
     ln -sf /opt/venv/bin/unoconvert /usr/local/bin/unoconvert; \
     ln -sf /opt/venv/bin/unoserver  /usr/local/bin/unoserver; \
-    ln -sf /opt/venv/bin/ocrmypdf   /usr/local/bin/ocrmypdf; \
+    ln -sf /opt/venv/bin/ocrmypdf        /usr/local/bin/ocrmypdf; \
-    ln -sf /opt/venv/bin/weasyprint /usr/local/bin/weasyprint; \
+    ln -sf /opt/venv/bin/weasyprint      /usr/local/bin/weasyprint; \
-    ln -sf /opt/venv/bin/unoping    /usr/local/bin/unoping; \
+    ln -sf /opt/venv/bin/unoping         /usr/local/bin/unoping; \
     fc-cache -f
 
 # Metadata labels - base image

engine/src/stirling/contracts/orchestrator.py

@@ -47,6 +47,7 @@ class OrchestratorRequest(ApiModel):
     enabled_endpoints: Annotated[list[ToolEndpoint], BeforeValidator(drop_unknown_tool_endpoints)] = Field(
         default_factory=list
     )
+    pymupdf_worker_available: bool = False
 
 
 class UnsupportedCapabilityResponse(ApiModel):

licenses/AGPL-3.0.txt

@@ -0,0 +1,661 @@
+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
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+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<https://www.gnu.org/licenses/>.

scripts/pymupdf_convert.py

@@ -0,0 +1,52 @@
+#!/opt/venv/bin/python3
+# Stirling PDF PyMuPDF Convert CLI
+# Copyright (C) 2025 Stirling PDF Inc.
+#
+# This program is free software: you can redistribute it and/or modify it under
+# the terms of the GNU Affero General Public License as published by the Free
+# Software Foundation, either version 3 of the License, or (at your option) any
+# later version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Affero General Public License along
+# with this program. If not, see <https://www.gnu.org/licenses/>.
+"""CLI entry point: convert a PDF file to Markdown.
+
+Usage::
+
+    pymupdf-convert <input.pdf> <output.md>
+"""
+
+from __future__ import annotations
+
+import sys
+from pathlib import Path
+
+import pymupdf
+import pymupdf4llm
+
+
+def main() -> None:
+    if len(sys.argv) != 3:
+        print("Usage: pymupdf-convert <input.pdf> <output.md>", file=sys.stderr)
+        sys.exit(1)
+
+    input_path = Path(sys.argv[1])
+    output_path = Path(sys.argv[2])
+
+    if not input_path.exists():
+        print(f"Input file not found: {input_path}", file=sys.stderr)
+        sys.exit(1)
+
+    with pymupdf.open(str(input_path)) as doc:
+        markdown = pymupdf4llm.to_markdown(doc, show_progress=False)
+
+    output_path.write_text(markdown, encoding="utf-8")
+
+
+if __name__ == "__main__":
+    main()