diff --git a/pkg/filter/custom.go b/pkg/filter/custom.go
index e2ca7e6..3b62f8e 100644
--- a/pkg/filter/custom.go
+++ b/pkg/filter/custom.go
@@ -2,6 +2,7 @@ package filter
 
 import (
 	"io/ioutil"
+	"os"
 	"path"
 	"strings"
 
@@ -15,16 +16,14 @@ import (
 // RegisterFilters reads a directory and register filters from files within it
 func RegisterFilters(dir string) {
 	files, err := ioutil.ReadDir(dir)
-	if err != nil {
-		logger.Log.Panicf("could not read from template filters dir '%s': %s", dir, err)
-	}
+	logger.Eexit(err, "could not read from template filters dir '%s'", dir)
 	for _, f := range files {
 		if !f.IsDir() {
 			switch path.Ext(f.Name()) {
 			case ".js":
 				fileBase := strings.TrimSuffix(f.Name(), ".js")
 				jsFile := dir + "/" + f.Name()
-				logger.Log.Debugf("trying to register filter from: %s", jsFile)
+				logger.D("trying to register filter from: %s", jsFile)
 				/*
 					jsStr, err := ioutil.ReadFile(jsFile)
 					if err != nil {
@@ -33,38 +32,31 @@ func RegisterFilters(dir string) {
 				*/
 				vm := motto.New()
 				fn, err := vm.Run(jsFile)
-				if err != nil {
-					logger.Log.Panicf("error in javascript vm for '%s': %s", jsFile, err)
-				}
+				logger.Eexit(err, "error in javascript vm for '%s'", jsFile)
 				if !fn.IsFunction() {
-					logger.Log.Panicf("%s does not contain a function code", jsFile)
+					logger.E("%s does not contain a function code", jsFile)
+					os.Exit(1)
 				}
 
 				err = pongo2.RegisterFilter(
 					fileBase,
 					func(in, param *pongo2.Value) (out *pongo2.Value, erro *pongo2.Error) {
 						thisObj, _ := vm.Object("({})")
+						var err error
 						if mark2web.CurrentContext != nil {
-							thisObj.Set("context", *mark2web.CurrentContext)
+							err = thisObj.Set("context", *mark2web.CurrentContext)
 						}
 
-						if err != nil {
-							logger.Log.Panicf("could not set context as in '%s': %s", jsFile, err)
-						}
+						logger.Perr(err, "could not set context in '%s': %s", jsFile)
 						ret, err := fn.Call(thisObj.Value(), in.Interface(), param.Interface())
-						if err != nil {
-							logger.Log.Panicf("error in javascript file '%s' while calling returned function: %s", jsFile, err)
-						}
+						logger.Eexit(err, "error in javascript file '%s' while calling returned function", jsFile)
+
 						retGo, err := ret.Export()
-						if err != nil {
-							logger.Log.Panicf("export error for '%s': %s", jsFile, err)
-						}
+						logger.Perr(err, "export error for '%s'", jsFile)
 						return pongo2.AsValue(retGo), nil
 					},
 				)
-				if err != nil {
-					logger.Log.Panicf("could not register filter from '%s': %s", jsFile, err)
-				}
+				logger.Perr(err, "could not register filter from '%s'", jsFile)
 
 			}
 		}
diff --git a/pkg/filter/image_process.go b/pkg/filter/image_process.go
index 9371962..a80d0a9 100644
--- a/pkg/filter/image_process.go
+++ b/pkg/filter/image_process.go
@@ -13,6 +13,7 @@ import (
 	"strings"
 
 	"gitbase.de/apairon/mark2web/pkg/helper"
+	"gitbase.de/apairon/mark2web/pkg/jobm"
 	"gitbase.de/apairon/mark2web/pkg/logger"
 	"gitbase.de/apairon/mark2web/pkg/mark2web"
 	"github.com/disintegration/imaging"
@@ -168,63 +169,67 @@ func ImageProcessFilter(in *pongo2.Value, param *pongo2.Value) (*pongo2.Value, *
 	if f, err := os.Stat(imgTarget); err == nil && !f.IsDir() {
 		logger.Log.Noticef("skipped processing image from %s to %s, file already exists", imgSource, imgTarget)
 	} else {
-		mark2web.ThreadStart(func() {
-			logger.Log.Noticef("processing image from %s to %s", imgSource, imgTarget)
-			if strings.HasPrefix(imgSource, "http://") || strings.HasPrefix(imgSource, "https://") {
-				// webrequest before finding target filename, because of file format in filename
-			} else {
-				img, err = imaging.Open(imgSource, imaging.AutoOrientation(true))
-				if err != nil {
-					logger.Log.Panicf("filter:image_resize, could not open image '%s': %s", imgSource, err)
+		jobm.Enqueue(jobm.Job{
+			Function: func() {
+				logger.Log.Noticef("processing image from %s to %s", imgSource, imgTarget)
+				if strings.HasPrefix(imgSource, "http://") || strings.HasPrefix(imgSource, "https://") {
+					// webrequest before finding target filename, because of file format in filename
+				} else {
+					img, err = imaging.Open(imgSource, imaging.AutoOrientation(true))
+					if err != nil {
+						logger.Log.Panicf("filter:image_resize, could not open image '%s': %s", imgSource, err)
+					}
 				}
-			}
 
-			switch p.Process {
-			case "resize":
-				img = imaging.Resize(img, p.Width, p.Height, imaging.Lanczos)
-			case "fit":
-				img = imaging.Fit(img, p.Width, p.Height, imaging.Lanczos)
-			case "fill":
-				var anchor imaging.Anchor
-				switch strings.ToLower(p.Anchor) {
-				case "":
-					fallthrough
-				case "center":
-					anchor = imaging.Center
-				case "topleft":
-					anchor = imaging.TopLeft
-				case "top":
-					anchor = imaging.Top
-				case "topright":
-					anchor = imaging.TopRight
-				case "left":
-					anchor = imaging.Left
-				case "right":
-					anchor = imaging.Right
-				case "bottomleft":
-					anchor = imaging.BottomLeft
-				case "bottom":
-					anchor = imaging.Bottom
-				case "bottomright":
-					anchor = imaging.BottomRight
+				switch p.Process {
+				case "resize":
+					img = imaging.Resize(img, p.Width, p.Height, imaging.Lanczos)
+				case "fit":
+					img = imaging.Fit(img, p.Width, p.Height, imaging.Lanczos)
+				case "fill":
+					var anchor imaging.Anchor
+					switch strings.ToLower(p.Anchor) {
+					case "":
+						fallthrough
+					case "center":
+						anchor = imaging.Center
+					case "topleft":
+						anchor = imaging.TopLeft
+					case "top":
+						anchor = imaging.Top
+					case "topright":
+						anchor = imaging.TopRight
+					case "left":
+						anchor = imaging.Left
+					case "right":
+						anchor = imaging.Right
+					case "bottomleft":
+						anchor = imaging.BottomLeft
+					case "bottom":
+						anchor = imaging.Bottom
+					case "bottomright":
+						anchor = imaging.BottomRight
+					default:
+						logger.Log.Panicf("filter:image_resize, unknown anchor a=%s definition", p.Anchor)
+					}
+					img = imaging.Fill(img, p.Width, p.Height, anchor, imaging.Lanczos)
 				default:
-					logger.Log.Panicf("filter:image_resize, unknown anchor a=%s definition", p.Anchor)
+					logger.Log.Panicf("filter:image_resize, invalid p parameter '%s'", p.Process)
 				}
-				img = imaging.Fill(img, p.Width, p.Height, anchor, imaging.Lanczos)
-			default:
-				logger.Log.Panicf("filter:image_resize, invalid p parameter '%s'", p.Process)
-			}
 
-			var encodeOptions = make([]imaging.EncodeOption, 0)
-			if p.Quality > 0 {
-				encodeOptions = append(encodeOptions, imaging.JPEGQuality(p.Quality))
-			}
+				var encodeOptions = make([]imaging.EncodeOption, 0)
+				if p.Quality > 0 {
+					encodeOptions = append(encodeOptions, imaging.JPEGQuality(p.Quality))
+				}
 
-			err = imaging.Save(img, imgTarget, encodeOptions...)
-			if err != nil {
-				logger.Log.Panicf("filter:image_resize, could save image '%s': %s", imgTarget, err)
-			}
-			logger.Log.Noticef("finished image: %s", imgTarget)
+				err = imaging.Save(img, imgTarget, encodeOptions...)
+				if err != nil {
+					logger.Log.Panicf("filter:image_resize, could save image '%s': %s", imgTarget, err)
+				}
+				logger.Log.Noticef("finished image: %s", imgTarget)
+			},
+			Description: "process image " + imgSource,
+			Category:    "image process",
 		})
 	}
 	return pongo2.AsValue(mark2web.CurrentTreeNode.ResolveNavPath(p.Filename)), nil
diff --git a/pkg/jobm/jobmanager.go b/pkg/jobm/jobmanager.go
new file mode 100644
index 0000000..6c62c4e
--- /dev/null
+++ b/pkg/jobm/jobmanager.go
@@ -0,0 +1,58 @@
+package jobm
+
+import (
+	"runtime"
+	"sync"
+
+	"gitbase.de/apairon/mark2web/pkg/logger"
+)
+
+var wg sync.WaitGroup
+var numCPU = runtime.NumCPU()
+
+// Job is a wrapper to descripe a Job function
+type Job struct {
+	Function    func()
+	Description string
+	Category    string
+}
+
+var jobChan = make(chan Job)
+
+func worker(jobChan <-chan Job) {
+	defer wg.Done()
+
+	for job := range jobChan {
+		job.Function()
+	}
+}
+
+func init() {
+	logger.Log.Infof("number of CPU core: %d", numCPU)
+	// one core for main thread
+	for i := 0; i < (numCPU - 1); i++ {
+		wg.Add(1)
+		go worker(jobChan)
+	}
+}
+
+// Enqueue enqueues a job to the job queue
+func Enqueue(job Job) {
+	if numCPU <= 1 {
+		// no threading
+		job.Function()
+		return
+	}
+	jobChan <- job
+}
+
+// Wait will wait for all jobs to finish
+func Wait() {
+	close(jobChan)
+	wg.Wait()
+}
+
+// SetNumCPU is for testing package without threading
+func SetNumCPU(i int) {
+	numCPU = i
+}
diff --git a/pkg/logger/logger.go b/pkg/logger/logger.go
index 5de94aa..78b12f4 100644
--- a/pkg/logger/logger.go
+++ b/pkg/logger/logger.go
@@ -13,7 +13,7 @@ var logBackendLeveled logging.LeveledBackend
 
 // SetLogLevel sets log level for global logger (debug, info, notice, warning, error)
 func SetLogLevel(level string) {
-	logBackendLevel := logging.NOTICE
+	logBackendLevel := logging.INFO
 	switch level {
 	case "debug":
 		logBackendLevel = logging.DEBUG
@@ -58,3 +58,67 @@ func init() {
 	spew.Config.DisablePointerMethods = true
 	configureLogger()
 }
+
+// D is shorthand for Debugf
+func D(format string, args ...interface{}) {
+	Log.Debugf(format, args...)
+}
+
+// I is shorthand for Infof
+func I(format string, args ...interface{}) {
+	Log.Infof(format, args...)
+}
+
+// N is shorthand for Noticef
+func N(format string, args ...interface{}) {
+	Log.Noticef(format, args...)
+}
+
+// W is shorthand for Warningf
+func W(format string, args ...interface{}) {
+	Log.Warningf(format, args...)
+}
+
+// E is shorthand for Errorf
+func E(format string, args ...interface{}) {
+	Log.Errorf(format, args...)
+}
+
+// P is shorthand for Panicf
+func P(format string, args ...interface{}) {
+	Log.Panicf(format, args...)
+}
+
+// Eerr is shorthand for
+// if err != nil {
+//   Log.Errorf(...)
+// }
+func Eerr(err error, format string, args ...interface{}) {
+	if err != nil {
+		args = append(args, err)
+		Log.Errorf(format+"\nError: %s", args...)
+	}
+}
+
+// Eexit is shorthand for
+// if err != nil {
+//   Log.Errorf(...)
+//	 os.Exit(1)
+// }
+func Eexit(err error, format string, args ...interface{}) {
+	Eerr(err, format, args...)
+	if err != nil {
+		os.Exit(1)
+	}
+}
+
+// Perr is shorthand for
+// if err != nil {
+//   Log.Panicf(...)
+// }
+func Perr(err error, format string, args ...interface{}) {
+	if err != nil {
+		args = append(args, err)
+		Log.Panicf(format+"\nError: %s", args...)
+	}
+}
diff --git a/pkg/mark2web/compress.go b/pkg/mark2web/compress.go
index 4d069df..4b2451a 100644
--- a/pkg/mark2web/compress.go
+++ b/pkg/mark2web/compress.go
@@ -7,56 +7,62 @@ import (
 	"os"
 	"path"
 
+	"gitbase.de/apairon/mark2web/pkg/jobm"
+
 	"gitbase.de/apairon/mark2web/pkg/logger"
 )
 
 func handleCompression(filename string, content []byte) {
-	ThreadStart(func() {
-		if _, ok := Config.Compress.Extensions[path.Ext(filename)]; ok {
+	jobm.Enqueue(jobm.Job{
+		Function: func() {
+			if _, ok := Config.Compress.Extensions[path.Ext(filename)]; ok {
 
-			if Config.Compress.Brotli {
-				handleBrotliCompression(filename, content)
+				if Config.Compress.Brotli {
+					handleBrotliCompression(filename, content)
+				}
+
+				if Config.Compress.GZIP {
+					gzFilename := filename + ".gz"
+
+					logger.Log.Infof("writing to compressed output file: %s", gzFilename)
+
+					f, err := os.Create(gzFilename)
+					if err != nil {
+						logger.Log.Panicf("could not create file '%s': %s", gzFilename, err)
+					}
+					defer f.Close()
+
+					zw, err := gzip.NewWriterLevel(f, gzip.BestCompression)
+					if err != nil {
+						logger.Log.Panicf("could not initialize gzip writer for '%s': %s", filename, err)
+					}
+					defer zw.Close()
+
+					if content != nil {
+						// content given
+						_, err = zw.Write(content)
+						if err != nil {
+							logger.Log.Panicf("could not write gziped content for '%s': %s", filename, err)
+						}
+					} else {
+						// read file
+						r, err := os.Open(filename)
+						if err != nil {
+							logger.Log.Panicf("could not open file '%s': %s", filename, err)
+						}
+						defer r.Close()
+
+						_, err = io.Copy(zw, r)
+						if err != nil {
+							logger.Log.Panicf("could not gzip file '%s': %s", filename, err)
+						}
+					}
+
+				}
 			}
-
-			if Config.Compress.GZIP {
-				gzFilename := filename + ".gz"
-
-				logger.Log.Infof("writing to compressed output file: %s", gzFilename)
-
-				f, err := os.Create(gzFilename)
-				if err != nil {
-					logger.Log.Panicf("could not create file '%s': %s", gzFilename, err)
-				}
-				defer f.Close()
-
-				zw, err := gzip.NewWriterLevel(f, gzip.BestCompression)
-				if err != nil {
-					logger.Log.Panicf("could not initialize gzip writer for '%s': %s", filename, err)
-				}
-				defer zw.Close()
-
-				if content != nil {
-					// content given
-					_, err = zw.Write(content)
-					if err != nil {
-						logger.Log.Panicf("could not write gziped content for '%s': %s", filename, err)
-					}
-				} else {
-					// read file
-					r, err := os.Open(filename)
-					if err != nil {
-						logger.Log.Panicf("could not open file '%s': %s", filename, err)
-					}
-					defer r.Close()
-
-					_, err = io.Copy(zw, r)
-					if err != nil {
-						logger.Log.Panicf("could not gzip file '%s': %s", filename, err)
-					}
-				}
-
-			}
-		}
+		},
+		Description: "compress " + filename,
+		Category:    "compress",
 	})
 }
 
diff --git a/pkg/mark2web/run.go b/pkg/mark2web/run.go
index 5c0b0f5..f175e11 100644
--- a/pkg/mark2web/run.go
+++ b/pkg/mark2web/run.go
@@ -1,5 +1,7 @@
 package mark2web
 
+import "gitbase.de/apairon/mark2web/pkg/jobm"
+
 // Run will do a complete run of mark2web
 func Run(inDir, outDir string, defaultPathConfig *PathConfig) {
 	SetTemplateDir(inDir + "/templates")
@@ -12,5 +14,5 @@ func Run(inDir, outDir string, defaultPathConfig *PathConfig) {
 
 	tree.WriteWebserverConfig()
 
-	Wait()
+	jobm.Wait()
 }
diff --git a/pkg/mark2web/wait.go b/pkg/mark2web/wait.go
deleted file mode 100644
index f8ae86f..0000000
--- a/pkg/mark2web/wait.go
+++ /dev/null
@@ -1,60 +0,0 @@
-package mark2web
-
-import (
-	"runtime"
-	"sync"
-
-	"gitbase.de/apairon/mark2web/pkg/logger"
-)
-
-var wg sync.WaitGroup
-var numCPU = runtime.NumCPU()
-var curNumThreads = 1 // main thread is 1
-
-func init() {
-	logger.Log.Infof("number of CPU core: %d", numCPU)
-}
-
-// Wait will wait for all our internal go threads
-func Wait() {
-	wg.Wait()
-}
-
-// ThreadSetup adds 1 to wait group
-func ThreadSetup() {
-	curNumThreads++
-	wg.Add(1)
-}
-
-// ThreadDone removes 1 from wait group
-func ThreadDone() {
-	curNumThreads--
-	wg.Done()
-}
-
-// ThreadStart will start a thread an manages the wait group
-func ThreadStart(f func(), forceNewThread ...bool) {
-	force := false
-	if len(forceNewThread) > 0 && forceNewThread[0] {
-		force = true
-	}
-
-	if numCPU > curNumThreads || force {
-		// only new thread if empty CPU core available or forced
-		threadF := func() {
-			f()
-			ThreadDone()
-		}
-
-		ThreadSetup()
-		go threadF()
-	} else {
-		logger.Log.Debugf("no more CPU core (%d used), staying in main thread", curNumThreads)
-		f()
-	}
-}
-
-// SetNumCPU is for testing package without threading
-func SetNumCPU(i int) {
-	numCPU = i
-}