diff --git a/web/admin.go b/web/admin.go
index c01abce..d3c4b41 100644
--- a/web/admin.go
+++ b/web/admin.go
@@ -2,7 +2,7 @@ package web
 
 import (
 	"fmt"
-	"log"
+	"log/slog"
 	"mime"
 	"net/http"
 	"os"
@@ -115,7 +115,7 @@ func handlerAdmin(w http.ResponseWriter, rq *http.Request) {
 // handlerAdminShutdown kills the wiki.
 func handlerAdminShutdown(w http.ResponseWriter, rq *http.Request) {
 	if user.CanProceed(rq, "admin/shutdown") {
-		log.Println("An admin commanded the wiki to shutdown")
+		slog.Info("An admin commanded the wiki to shutdown")
 		os.Exit(0)
 	}
 }
@@ -162,7 +162,7 @@ func handlerAdminUserEdit(w http.ResponseWriter, rq *http.Request) {
 			u.Group = newGroup
 			if err := user.SaveUserDatabase(); err != nil {
 				u.Group = oldGroup
-				log.Println(err)
+				slog.Info("Failed to save user database", "err", err)
 				f = f.WithError(err)
 			} else {
 				http.Redirect(w, rq, "/admin/users/", http.StatusSeeOther)
@@ -241,7 +241,7 @@ func handlerAdminUserDelete(w http.ResponseWriter, rq *http.Request) {
 		if !f.HasError() {
 			http.Redirect(w, rq, "/admin/users/", http.StatusSeeOther)
 		} else {
-			log.Println(f.Error())
+			slog.Info("Failed to delete user", "err", f.Error())
 		}
 	}
 
diff --git a/web/cats.go b/web/cats.go
index 47b1d7f..251b905 100644
--- a/web/cats.go
+++ b/web/cats.go
@@ -1,14 +1,13 @@
 package web
 
 import (
-	"github.com/bouncepaw/mycorrhiza/internal/categories"
 	"io"
-	"log"
 	"log/slog"
 	"net/http"
 	"sort"
 	"strings"
 
+	"github.com/bouncepaw/mycorrhiza/internal/categories"
 	"github.com/bouncepaw/mycorrhiza/internal/user"
 	"github.com/bouncepaw/mycorrhiza/util"
 	"github.com/bouncepaw/mycorrhiza/web/viewutil"
@@ -66,7 +65,7 @@ func handlerCategory(w http.ResponseWriter, rq *http.Request) {
 // There is one hypha from the hypha field. Then there are n hyphae in fields prefixed by _. It seems like I have to do it myself. Compare with PHP which handles it for you. I hope I am doing this wrong.
 func hyphaeFromRequest(rq *http.Request) (canonicalNames []string) {
 	if err := rq.ParseForm(); err != nil {
-		log.Println(err)
+		slog.Info("Failed to parse form", "err", err)
 	}
 	if hyphaName := util.CanonicalName(rq.PostFormValue("hypha")); hyphaName != "" {
 		canonicalNames = append(canonicalNames, hyphaName)
@@ -100,7 +99,8 @@ func handlerRemoveFromCategory(w http.ResponseWriter, rq *http.Request) {
 		return
 	}
 	if len(hyphaNames) == 0 || catName == "" {
-		log.Printf("%s passed no data for removal of hyphae from a category\n", u.Name)
+		slog.Info("No data for removal of hyphae from category passed",
+			"username", u.Name, "catName", catName)
 		http.Redirect(w, rq, redirectTo, http.StatusSeeOther)
 		return
 	}
@@ -108,7 +108,8 @@ func handlerRemoveFromCategory(w http.ResponseWriter, rq *http.Request) {
 		// TODO: Make it more effective.
 		categories.RemoveHyphaFromCategory(hyphaName, catName)
 	}
-	log.Printf("%s removed %q from category %s\n", u.Name, hyphaNames, catName)
+	slog.Info("Remove hyphae from category",
+		"username", u.Name, "catName", catName, "hyphaNames", hyphaNames)
 	http.Redirect(w, rq, redirectTo, http.StatusSeeOther)
 }
 
diff --git a/web/mutators.go b/web/mutators.go
index 75e13ae..1561514 100644
--- a/web/mutators.go
+++ b/web/mutators.go
@@ -1,23 +1,22 @@
 package web
 
 import (
-	"git.sr.ht/~bouncepaw/mycomarkup/v5"
+	"html/template"
+	"log/slog"
+	"net/http"
+
+	"github.com/bouncepaw/mycorrhiza/hypview"
 	"github.com/bouncepaw/mycorrhiza/internal/hyphae"
 	"github.com/bouncepaw/mycorrhiza/internal/shroom"
 	"github.com/bouncepaw/mycorrhiza/internal/user"
-	"github.com/bouncepaw/mycorrhiza/web/viewutil"
-	"html/template"
-	"log"
-	"net/http"
-
-	"git.sr.ht/~bouncepaw/mycomarkup/v5/mycocontext"
-	"github.com/bouncepaw/mycorrhiza/hypview"
-	"github.com/bouncepaw/mycorrhiza/mycoopts"
-
-	"github.com/gorilla/mux"
-
 	"github.com/bouncepaw/mycorrhiza/l18n"
+	"github.com/bouncepaw/mycorrhiza/mycoopts"
 	"github.com/bouncepaw/mycorrhiza/util"
+	"github.com/bouncepaw/mycorrhiza/web/viewutil"
+
+	"git.sr.ht/~bouncepaw/mycomarkup/v5"
+	"git.sr.ht/~bouncepaw/mycomarkup/v5/mycocontext"
+	"github.com/gorilla/mux"
 )
 
 func initMutators(r *mux.Router) {
@@ -64,14 +63,16 @@ func handlerDelete(w http.ResponseWriter, rq *http.Request) {
 	)
 
 	if !u.CanProceed("delete") {
-		log.Printf("%s has no rights to delete ‘%s’\n", u.Name, h.CanonicalName())
+		slog.Info("No rights to delete hypha",
+			"username", u.Name, "hyphaName", h.CanonicalName())
 		viewutil.HttpErr(meta, http.StatusForbidden, h.CanonicalName(), "No rights")
 		return
 	}
 
 	switch h.(type) {
 	case *hyphae.EmptyHypha:
-		log.Printf("%s tries to delete empty hypha ‘%s’\n", u.Name, h.CanonicalName())
+		slog.Info("Trying to delete empty hyphae",
+			"username", u.Name, "hyphaName", h.CanonicalName())
 		// TODO: localize
 		viewutil.HttpErr(meta, http.StatusForbidden, h.CanonicalName(), "Cannot delete an empty hypha")
 		return
@@ -87,7 +88,7 @@ func handlerDelete(w http.ResponseWriter, rq *http.Request) {
 	}
 
 	if err := shroom.Delete(u, h.(hyphae.ExistingHypha)); err != nil {
-		log.Println(err)
+		slog.Error("Failed to delete hypha", "err", err)
 		viewutil.HttpErr(meta, http.StatusInternalServerError, h.CanonicalName(), err.Error())
 		return
 	}
@@ -105,13 +106,15 @@ func handlerRename(w http.ResponseWriter, rq *http.Request) {
 
 	switch h.(type) {
 	case *hyphae.EmptyHypha:
-		log.Printf("%s tries to rename empty hypha ‘%s’", u.Name, h.CanonicalName())
+		slog.Info("Trying to rename empty hypha",
+			"username", u.Name, "hyphaName", h.CanonicalName())
 		viewutil.HttpErr(meta, http.StatusForbidden, h.CanonicalName(), "Cannot rename an empty hypha") // TODO: localize
 		return
 	}
 
 	if !u.CanProceed("rename") {
-		log.Printf("%s has no rights to rename ‘%s’\n", u.Name, h.CanonicalName())
+		slog.Info("No rights to rename hypha",
+			"username", u.Name, "hyphaName", h.CanonicalName())
 		viewutil.HttpErr(meta, http.StatusForbidden, h.CanonicalName(), "No rights")
 		return
 	}
@@ -129,7 +132,8 @@ func handlerRename(w http.ResponseWriter, rq *http.Request) {
 	}
 
 	if err := shroom.Rename(oldHypha, newName, recursive, leaveRedirections, u); err != nil {
-		log.Printf("%s tries to rename ‘%s’: %s", u.Name, oldHypha.CanonicalName(), err.Error())
+		slog.Error("Failed to rename hypha",
+			"err", err, "username", u.Name, "hyphaName", oldHypha.CanonicalName())
 		viewutil.HttpErr(meta, http.StatusForbidden, oldHypha.CanonicalName(), lc.Get(err.Error())) // TODO: localize
 		return
 	}
@@ -163,7 +167,7 @@ func handlerEdit(w http.ResponseWriter, rq *http.Request) {
 	default:
 		content, err = hyphae.FetchMycomarkupFile(h)
 		if err != nil {
-			log.Println(err)
+			slog.Error("Failed to fetch Mycomarkup file", "err", err)
 			viewutil.HttpErr(meta, http.StatusInternalServerError, hyphaName, lc.Get("ui.error_text_fetch"))
 			return
 		}
diff --git a/web/pages.go b/web/pages.go
index 38cf691..4f8f077 100644
--- a/web/pages.go
+++ b/web/pages.go
@@ -2,6 +2,7 @@ package web
 
 import (
 	"embed"
+
 	"github.com/bouncepaw/mycorrhiza/web/newtmpl"
 	"github.com/bouncepaw/mycorrhiza/web/viewutil"
 )
diff --git a/web/password.go b/web/password.go
index 4a74a7b..37e885d 100644
--- a/web/password.go
+++ b/web/password.go
@@ -2,12 +2,13 @@ package web
 
 import (
 	"fmt"
-	"github.com/bouncepaw/mycorrhiza/internal/user"
-	"github.com/bouncepaw/mycorrhiza/util"
-	"github.com/bouncepaw/mycorrhiza/web/viewutil"
 	"mime"
 	"net/http"
 	"reflect"
+
+	"github.com/bouncepaw/mycorrhiza/internal/user"
+	"github.com/bouncepaw/mycorrhiza/util"
+	"github.com/bouncepaw/mycorrhiza/web/viewutil"
 )
 
 func handlerUserChangePassword(w http.ResponseWriter, rq *http.Request) {
diff --git a/web/readers.go b/web/readers.go
index 0f8363c..480c874 100644
--- a/web/readers.go
+++ b/web/readers.go
@@ -2,7 +2,17 @@ package web
 
 import (
 	"fmt"
-	"git.sr.ht/~bouncepaw/mycomarkup/v5"
+	"html/template"
+	"io"
+	"log/slog"
+	"net/http"
+	"os"
+	"path"
+	"path/filepath"
+	"strings"
+	"time"
+
+	"github.com/bouncepaw/mycorrhiza/history"
 	"github.com/bouncepaw/mycorrhiza/hypview"
 	"github.com/bouncepaw/mycorrhiza/internal/backlinks"
 	"github.com/bouncepaw/mycorrhiza/internal/categories"
@@ -12,26 +22,15 @@ import (
 	"github.com/bouncepaw/mycorrhiza/internal/mimetype"
 	"github.com/bouncepaw/mycorrhiza/internal/tree"
 	"github.com/bouncepaw/mycorrhiza/internal/user"
+	"github.com/bouncepaw/mycorrhiza/l18n"
 	"github.com/bouncepaw/mycorrhiza/mycoopts"
+	"github.com/bouncepaw/mycorrhiza/util"
 	"github.com/bouncepaw/mycorrhiza/web/viewutil"
-	"html/template"
-	"io"
-	"log"
-	"log/slog"
-	"net/http"
-	"os"
-	"path"
-	"path/filepath"
-	"strings"
-	"time"
-
-	"github.com/gorilla/mux"
 
+	"git.sr.ht/~bouncepaw/mycomarkup/v5"
 	"git.sr.ht/~bouncepaw/mycomarkup/v5/mycocontext"
 	"git.sr.ht/~bouncepaw/mycomarkup/v5/tools"
-	"github.com/bouncepaw/mycorrhiza/history"
-	"github.com/bouncepaw/mycorrhiza/l18n"
-	"github.com/bouncepaw/mycorrhiza/util"
+	"github.com/gorilla/mux"
 )
 
 func initReaders(r *mux.Router) {
@@ -109,6 +108,7 @@ func handlerRevisionText(w http.ResponseWriter, rq *http.Request) {
 		h         = hyphae.ByName(hyphaName)
 	)
 	w.Header().Set("Content-Type", "text/plain; charset=utf-8")
+
 	switch h := h.(type) {
 	case *hyphae.EmptyHypha:
 		var mycoFilePath = filepath.Join(files.HyphaeDir(), h.CanonicalName()+".myco")
@@ -116,27 +116,32 @@ func handlerRevisionText(w http.ResponseWriter, rq *http.Request) {
 
 		if err != nil {
 			w.WriteHeader(http.StatusNotFound)
-			log.Printf("While serving text of ‘%s’ at revision ‘%s’: %s\n", hyphaName, revHash, err.Error())
+			slog.Error("Failed to serve text part",
+				"err", err, "hyphaName", hyphaName, "revHash", revHash)
 			_, _ = io.WriteString(w, "Error: "+err.Error())
 			return
 		}
-		log.Printf("Serving text of ‘%s’ from ‘%s’ at revision ‘%s’\n", hyphaName, mycoFilePath, revHash)
+		slog.Info("Serving text part",
+			"hyphaName", hyphaName, "revHash", revHash, "mycoFilePath", mycoFilePath)
 		w.WriteHeader(http.StatusOK)
 		_, _ = io.WriteString(w, textContents)
+
 	case hyphae.ExistingHypha:
 		if !h.HasTextFile() {
-			log.Printf(`Media hypha ‘%s’ has no text`)
+			slog.Info("Media hypha has no text part; cannot serve it",
+				"hyphaName", h.CanonicalName())
 			w.WriteHeader(http.StatusNotFound)
 		}
 		var textContents, err = history.FileAtRevision(h.TextFilePath(), revHash)
 
 		if err != nil {
 			w.WriteHeader(http.StatusNotFound)
-			log.Printf("While serving text of ‘%s’ at revision ‘%s’: %s\n", hyphaName, revHash, err.Error())
+			slog.Error("Failed to serve text part",
+				"err", err, "hyphaName", h.CanonicalName(), "revHash", revHash)
 			_, _ = io.WriteString(w, "Error: "+err.Error())
 			return
 		}
-		log.Printf("Serving text of ‘%s’ from ‘%s’ at revision ‘%s’\n", hyphaName, h.TextFilePath(), revHash)
+		slog.Info("Serving text part", "hyphaName", h.CanonicalName(), "revHash", revHash)
 		w.WriteHeader(http.StatusOK)
 		_, _ = io.WriteString(w, textContents)
 	}
@@ -188,7 +193,7 @@ func handlerText(w http.ResponseWriter, rq *http.Request) {
 	hyphaName := util.HyphaNameFromRq(rq, "text")
 	switch h := hyphae.ByName(hyphaName).(type) {
 	case hyphae.ExistingHypha:
-		log.Println("Serving", h.TextFilePath())
+		slog.Info("Serving text part", "path", h.TextFilePath())
 		w.Header().Set("Content-Type", "text/plain; charset=utf-8")
 		http.ServeFile(w, rq, h.TextFilePath())
 	}
@@ -201,9 +206,10 @@ func handlerBinary(w http.ResponseWriter, rq *http.Request) {
 	switch h := hyphae.ByName(hyphaName).(type) {
 	case *hyphae.EmptyHypha, *hyphae.TextualHypha:
 		w.WriteHeader(http.StatusNotFound)
-		log.Printf("Textual hypha ‘%s’ has no media, cannot serve\n", h.CanonicalName())
+		slog.Info("Textual hypha has no media file; cannot serve it",
+			"hyphaName", h.CanonicalName())
 	case *hyphae.MediaHypha:
-		log.Println("Serving", h.MediaFilePath())
+		slog.Info("Serving media file", "path", h.MediaFilePath())
 		w.Header().Set("Content-Type", mimetype.FromExtension(filepath.Ext(h.MediaFilePath())))
 		http.ServeFile(w, rq, h.MediaFilePath())
 	}