topic Certain pdfs generate empty thumbnail in Alfresco Archive https://connect.hyland.com/t5/alfresco-archive/certain-pdfs-generate-empty-thumbnail/m-p/215006#M168136 <HTML><HEAD></HEAD><BODY><SPAN>Hi all,</SPAN><BR /><BR /><SPAN>Some pdfs (not all, just the ones that come in via OmniPage pro scans) I have generate no (or empty) thumbnail in share. The log files show the error pasted below.</SPAN><BR /><BR /><SPAN>Does anyone know how to fix this problem? I can't seem to attach said pdf to this post, anywhere else where I can add this for you all to take a look at?</SPAN><BR /><BR /><SPAN>Hope anyone can help!</SPAN><BR /><BR /><SPAN>Regards,</SPAN><BR /><BR /><SPAN>Kees.</SPAN><BR /><BR /><PRE class="language-none line-numbers"><CODE>Error reading image<BR />com.sun.pdfview.PDFParseException: Unknown coding method:JPXDecode<BR />&nbsp;&nbsp;&nbsp;at com.sun.pdfview.decode.PDFDecoder.decodeStream(PDFDecoder.java:72)<BR />&nbsp;&nbsp;&nbsp;at com.sun.pdfview.PDFObject.decodeStream(PDFObject.java:330)<BR />&nbsp;&nbsp;&nbsp;at com.sun.pdfview.PDFObject.getStream(PDFObject.java:257)<BR />&nbsp;&nbsp;&nbsp;at com.sun.pdfview.PDFObject.getStream(PDFObject.java:251)<BR />&nbsp;&nbsp;&nbsp;at com.sun.pdfview.PDFImage.getImage(PDFImage.java:163)<BR />&nbsp;&nbsp;&nbsp;at com.sun.pdfview.PDFRenderer.drawImage(PDFRenderer.java:253)<BR />&nbsp;&nbsp;&nbsp;at com.sun.pdfview.PDFImageCmd.execute(PDFPage.java:650)<BR />&nbsp;&nbsp;&nbsp;at com.sun.pdfview.PDFRenderer.iterate(PDFRenderer.java:551)<BR />&nbsp;&nbsp;&nbsp;at com.sun.pdfview.BaseWatchable.run(BaseWatchable.java:88)<BR />&nbsp;&nbsp;&nbsp;at com.sun.pdfview.BaseWatchable.execute(BaseWatchable.java:250)<BR />&nbsp;&nbsp;&nbsp;at com.sun.pdfview.BaseWatchable.go(BaseWatchable.java:184)<BR />&nbsp;&nbsp;&nbsp;at com.sun.pdfview.PDFPage.getImage(PDFPage.java:236)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.content.transform.PdfToImageContentTransformer.transformInternal(PdfToImageContentTransformer.java:103)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.content.transform.AbstractContentTransformer2.transform(AbstractContentTransformer2.java:216)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.content.transform.ComplexContentTransformer.transformInternal(ComplexContentTransformer.java:154)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.content.transform.AbstractContentTransformer2.transform(AbstractContentTransformer2.java:216)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.content.RoutingContentService.transform(RoutingContentService.java:505)<BR />&nbsp;&nbsp;&nbsp;at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)<BR />&nbsp;&nbsp;&nbsp;at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at java.lang.reflect.Method.invoke(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:296)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:177)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:144)<BR />&nbsp;&nbsp;&nbsp;at net.sf.acegisecurity.intercept.method.aopalliance.MethodSecurityInterceptor.invoke(MethodSecurityInterceptor.java:80)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:166)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.model.ml.MLContentInterceptor.invoke(MLContentInterceptor.java:131)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:166)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.security.permissions.impl.ExceptionTranslatorMethodInterceptor.invoke(ExceptionTranslatorMethodInterceptor.java:49)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:166)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.audit.AuditComponentImpl.audit(AuditComponentImpl.java:275)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.audit.AuditMethodInterceptor.invoke(AuditMethodInterceptor.java:69)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:166)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:107)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:166)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)<BR />&nbsp;&nbsp;&nbsp;at $Proxy31.transform(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.thumbnail.ThumbnailServiceImpl.createThumbnail(ThumbnailServiceImpl.java:237)<BR />&nbsp;&nbsp;&nbsp;at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)<BR />&nbsp;&nbsp;&nbsp;at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at java.lang.reflect.Method.invoke(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:296)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:177)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:144)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.security.permissions.impl.AlwaysProceedMethodInterceptor.invoke(AlwaysProceedMethodInterceptor.java:40)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:166)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.security.permissions.impl.ExceptionTranslatorMethodInterceptor.invoke(ExceptionTranslatorMethodInterceptor.java:49)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:166)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.audit.AuditComponentImpl.audit(AuditComponentImpl.java:275)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.audit.AuditMethodInterceptor.invoke(AuditMethodInterceptor.java:69)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:166)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:107)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:166)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)<BR />&nbsp;&nbsp;&nbsp;at $Proxy85.createThumbnail(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.thumbnail.CreateThumbnailActionExecuter.executeImpl(CreateThumbnailActionExecuter.java:115)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.action.executer.ActionExecuterAbstractBase.execute(ActionExecuterAbstractBase.java:127)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.action.ActionServiceImpl.directActionExecution(ActionServiceImpl.java:592)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.action.ActionServiceImpl.executeActionImpl(ActionServiceImpl.java:529)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.action.AsynchronousActionExecutionQueueImpl$ActionExecutionWrapper$1$1.execute(AsynchronousActionExecutionQueueImpl.java:369)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:320)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:227)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.action.AsynchronousActionExecutionQueueImpl$ActionExecutionWrapper$1.doWork(AsynchronousActionExecutionQueueImpl.java:378)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.security.authentication.AuthenticationUtil.runAs(AuthenticationUtil.java:437)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.action.AsynchronousActionExecutionQueueImpl$ActionExecutionWrapper.run(AsynchronousActionExecutionQueueImpl.java:381)<BR />&nbsp;&nbsp;&nbsp;at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at java.lang.Thread.run(Unknown Source)<BR />java.lang.NullPointerException<BR />&nbsp;&nbsp;&nbsp;at com.sun.pdfview.PDFRenderer.drawImage(PDFRenderer.java:274)<BR />&nbsp;&nbsp;&nbsp;at com.sun.pdfview.PDFImageCmd.execute(PDFPage.java:650)<BR />&nbsp;&nbsp;&nbsp;at com.sun.pdfview.PDFRenderer.iterate(PDFRenderer.java:551)<BR />&nbsp;&nbsp;&nbsp;at com.sun.pdfview.BaseWatchable.run(BaseWatchable.java:88)<BR />&nbsp;&nbsp;&nbsp;at com.sun.pdfview.BaseWatchable.execute(BaseWatchable.java:250)<BR />&nbsp;&nbsp;&nbsp;at com.sun.pdfview.BaseWatchable.go(BaseWatchable.java:184)<BR />&nbsp;&nbsp;&nbsp;at com.sun.pdfview.PDFPage.getImage(PDFPage.java:236)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.content.transform.PdfToImageContentTransformer.transformInternal(PdfToImageContentTransformer.java:103)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.content.transform.AbstractContentTransformer2.transform(AbstractContentTransformer2.java:216)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.content.transform.ComplexContentTransformer.transformInternal(ComplexContentTransformer.java:154)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.content.transform.AbstractContentTransformer2.transform(AbstractContentTransformer2.java:216)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.content.RoutingContentService.transform(RoutingContentService.java:505)<BR />&nbsp;&nbsp;&nbsp;at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)<BR />&nbsp;&nbsp;&nbsp;at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at java.lang.reflect.Method.invoke(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:296)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:177)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:144)<BR />&nbsp;&nbsp;&nbsp;at net.sf.acegisecurity.intercept.method.aopalliance.MethodSecurityInterceptor.invoke(MethodSecurityInterceptor.java:80)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:166)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.model.ml.MLContentInterceptor.invoke(MLContentInterceptor.java:131)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:166)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.security.permissions.impl.ExceptionTranslatorMethodInterceptor.invoke(ExceptionTranslatorMethodInterceptor.java:49)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:166)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.audit.AuditComponentImpl.audit(AuditComponentImpl.java:275)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.audit.AuditMethodInterceptor.invoke(AuditMethodInterceptor.java:69)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:166)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:107)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:166)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)<BR />&nbsp;&nbsp;&nbsp;at $Proxy31.transform(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.thumbnail.ThumbnailServiceImpl.createThumbnail(ThumbnailServiceImpl.java:237)<BR />&nbsp;&nbsp;&nbsp;at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)<BR />&nbsp;&nbsp;&nbsp;at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at java.lang.reflect.Method.invoke(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:296)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:177)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:144)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.security.permissions.impl.AlwaysProceedMethodInterceptor.invoke(AlwaysProceedMethodInterceptor.java:40)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:166)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.security.permissions.impl.ExceptionTranslatorMethodInterceptor.invoke(ExceptionTranslatorMethodInterceptor.java:49)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:166)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.audit.AuditComponentImpl.audit(AuditComponentImpl.java:275)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.audit.AuditMethodInterceptor.invoke(AuditMethodInterceptor.java:69)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:166)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:107)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:166)<BR />&nbsp;&nbsp;&nbsp;at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)<BR />&nbsp;&nbsp;&nbsp;at $Proxy85.createThumbnail(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.thumbnail.CreateThumbnailActionExecuter.executeImpl(CreateThumbnailActionExecuter.java:115)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.action.executer.ActionExecuterAbstractBase.execute(ActionExecuterAbstractBase.java:127)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.action.ActionServiceImpl.directActionExecution(ActionServiceImpl.java:592)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.action.ActionServiceImpl.executeActionImpl(ActionServiceImpl.java:529)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.action.AsynchronousActionExecutionQueueImpl$ActionExecutionWrapper$1$1.execute(AsynchronousActionExecutionQueueImpl.java:369)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:320)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.transaction.RetryingTransactionHelper.doInTransaction(RetryingTransactionHelper.java:227)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.action.AsynchronousActionExecutionQueueImpl$ActionExecutionWrapper$1.doWork(AsynchronousActionExecutionQueueImpl.java:378)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.security.authentication.AuthenticationUtil.runAs(AuthenticationUtil.java:437)<BR />&nbsp;&nbsp;&nbsp;at org.alfresco.repo.action.AsynchronousActionExecutionQueueImpl$ActionExecutionWrapper.run(AsynchronousActionExecutionQueueImpl.java:381)<BR />&nbsp;&nbsp;&nbsp;at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)<BR />&nbsp;&nbsp;&nbsp;at java.lang.Thread.run(Unknown Source)<SPAN 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Sat, 04 Jul 2009 15:49:14 GMT kvb 2009-07-04T15:49:14Z Certain pdfs generate empty thumbnail https://connect.hyland.com/t5/alfresco-archive/certain-pdfs-generate-empty-thumbnail/m-p/215006#M168136 Hi all,Some pdfs (not all, just the ones that come in via OmniPage pro scans) I have generate no (or empty) thumbnail in share. The log files show the error pasted below.Does anyone know how to fix this problem? I can't seem to attach said pdf to this post, anywhere else where I can add this for you Sat, 04 Jul 2009 15:49:14 GMT https://connect.hyland.com/t5/alfresco-archive/certain-pdfs-generate-empty-thumbnail/m-p/215006#M168136 kvb 2009-07-04T15:49:14Z Re: Certain pdfs generate empty thumbnail https://connect.hyland.com/t5/alfresco-archive/certain-pdfs-generate-empty-thumbnail/m-p/215007#M168137 <HTML><HEAD></HEAD><BODY><SPAN>I know there seems to be a compression issue when converting the PDF to a thumbnail….Open Office doesnt seem to support at least some types of compressed graphics in PDFs.&nbsp; My guess is the only option is tweak the compression settings when creating the PDF</SPAN></BODY></HTML> Tue, 14 Jul 2009 19:25:00 GMT https://connect.hyland.com/t5/alfresco-archive/certain-pdfs-generate-empty-thumbnail/m-p/215007#M168137 ofrxnz 2009-07-14T19:25:00Z