Compact density and built-in Iosevka font for denser log display

Settings > Interface > Log display gets a Density switch (Normal/Compact)
that tightens row padding and line height, and the font list gets Iosevka,
a narrow SIL OFL monospace font served from web/fonts (Latin subset,
13 KB per weight) so it works offline, unlike the Bunny Fonts ones.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

README.fr.md

@@ -78,8 +78,8 @@ par exemple `error AND host:web-01`, `app:~"ssh|nginx"` ou `* | stats by (host)
 Le direct est désactivé dans ce mode.
 
 Chaque ligne affiche, de gauche à droite : l'**heure de réception** (horloge du serveur),
-l'horodatage trouvé dans le message lui-même (`msg_time`), la sévérité, l'hôte, l'application,
+l'horodatage trouvé dans le message lui-même (`msg_time`), la sévérité, l'hôte, l'application
-les codes des tags trouvés et le message. Un clic sur un hôte ou une application filtre dessus.
+et le message. Un clic sur un hôte ou une application filtre dessus.
 
 Les logs sont indexés, recherchés et triés par **heure de réception** : les équipements dont
 l'horloge est fausse (par exemple des points d'accès dont le NTP échoue) apparaissent quand même
@@ -235,22 +235,20 @@ couleur, est mémorisé par navigateur.
   ajoutés en double, et les tags ajoutés se modifient comme les autres. Dans une expression
   régulière, un groupe nommé `hl` (`(?<hl>…)`) ne colore que cette partie de la correspondance :
   les préréglages s'en servent pour colorer le code de statut ou la méthode, pas le texte autour.
-  Chaque tag reçoit un code à deux chiffres (`01`, `02`…) attribué par le serveur : il reste
-  attaché au tag jusqu'à sa suppression (les tags créés par les versions précédentes en reçoivent
-  un aussi). La colonne *Filtres* de la liste affiche, en badges gris, les codes des tags actifs
-  trouvés dans chaque message ; elle a la place pour 3, au-delà elle en affiche 2 et `+N`, et
-  l'infobulle les liste tous.
 - **Interface**
   - *Thème* : Système (suit la préférence de l'ordinateur ou du téléphone), Clair ou Sombre. Le
     bouton soleil/lune de l'en-tête bascule entre clair et sombre.
-  - *Affichage des logs* : taille du texte (très petite, petite, moyenne, grande) et police :
+  - *Affichage des logs* : taille du texte (très petite, petite, moyenne, grande), densité
-    la police monospace du système, ou l'une des 12 polices libres conçues pour le texte dense
+    (normale, ou compacte pour afficher environ 50 % de lignes en plus à l'écran) et police :
-    (JetBrains Mono, Fira Code, Source Code Pro, IBM Plex Mono, Cascadia Code, Roboto Mono,
+    la police monospace du système, [Iosevka](https://github.com/be5invis/Iosevka) (étroite,
-    Ubuntu Mono, Inconsolata, Red Hat Mono, Noto Sans Mono, Victor Mono, DM Mono). Elles sont
+    donc plus de texte par ligne ; servie par LogStream lui-même, fonctionne hors ligne), ou
-    chargées par le navigateur depuis [Bunny Fonts](https://fonts.bunny.net), un service
+    l'une des 12 polices libres conçues pour le texte dense (JetBrains Mono, Fira Code, Source
-    européen de polices respectueux de la vie privée ; sans accès à internet, la police du
+    Code Pro, IBM Plex Mono, Cascadia Code, Roboto Mono, Ubuntu Mono, Inconsolata, Red Hat Mono,
-    système est utilisée. Les ligatures sont désactivées pour que `->` ou `!=` s'affichent tels
+    Noto Sans Mono, Victor Mono, DM Mono). Ces 12 polices sont chargées par le navigateur depuis
-    quels.
+    [Bunny Fonts](https://fonts.bunny.net), un service européen de polices respectueux de la vie
+    privée ; sans accès à internet, la police du système est utilisée. Les ligatures sont
+    désactivées pour que `->` ou `!=` s'affichent tels quels. Le réglage le plus dense est Très
+    petite + Compacte + Iosevka.
 - **Données** : « Supprimer tous les logs » efface définitivement tous les logs stockés (il faut
   taper `PURGE` pour confirmer). Les tags et les paramètres sont conservés. VictoriaLogs doit
   être lancé avec `-delete.enable` (déjà présent dans `docker-compose.yml`) ; mettez

README.md

@@ -72,7 +72,7 @@ message, host and app. Words are combined with AND.
 The live view is disabled in this mode.
 
 Each row shows, from left to right: the **reception time** (server clock), the timestamp
-found in the message itself (`msg_time`), severity, host, app, codes of the tags found and message. Click a host or an
+found in the message itself (`msg_time`), severity, host, app and message. Click a host or an
 app to filter on it.
 
 Logs are indexed, searched and sorted by **reception time**: devices with a wrong clock
@@ -214,20 +214,18 @@ remembered per browser.
   added tags can be edited like any other. In a regular expression, a group named `hl`
   (`(?<hl>…)`) colors only that part of the match: the presets use it to color the status code
   or the method, not the text around it.
-  Each tag gets a two-digit code (`01`, `02`…) assigned by the server: it stays with the tag
-  until the tag is deleted (codes are also given to tags created by earlier versions). The
-  *Filters* column of the log list shows, as grey badges, the codes of the active tags found in
-  each message; it has room for 3, beyond that it shows 2 and `+N`, and the tooltip lists them
-  all.
 - **Interface**
   - *Theme*: System (follows the computer/phone preference), Light or Dark. The sun/moon
     button in the header switches between light and dark.
-  - *Log display*: font size (tiny, small, medium, large) and font: the system monospace
+  - *Log display*: font size (tiny, small, medium, large), density (normal, or compact to
-    font, or one of 12 free fonts made for dense text (JetBrains Mono, Fira Code, Source
+    fit about 50% more lines on screen) and font: the system monospace font,
-    Code Pro, IBM Plex Mono, Cascadia Code, Roboto Mono, Ubuntu Mono, Inconsolata, Red Hat
+    [Iosevka](https://github.com/be5invis/Iosevka) (narrow, so more text fits on each line;
-    Mono, Noto Sans Mono, Victor Mono, DM Mono). They are loaded by the browser from
+    served by LogStream itself, works offline), or one of 12 free fonts made for dense text
-    [Bunny Fonts](https://fonts.bunny.net), a privacy-friendly European font service; without
+    (JetBrains Mono, Fira Code, Source Code Pro, IBM Plex Mono, Cascadia Code, Roboto Mono,
-    internet access, the system font is used. Ligatures are disabled so `->` or `!=` show as typed.
+    Ubuntu Mono, Inconsolata, Red Hat Mono, Noto Sans Mono, Victor Mono, DM Mono). These 12 are
+    loaded by the browser from [Bunny Fonts](https://fonts.bunny.net), a privacy-friendly
+    European font service; without internet access, the system font is used. Ligatures are
+    disabled so `->` or `!=` show as typed. The densest setting is Tiny + Compact + Iosevka.
 - **Data**: "Delete all logs" permanently erases every stored log (you must type
   `PURGE` to confirm). Tags and settings are kept. VictoriaLogs needs `-delete.enable`
   (already set in `docker-compose.yml`); set `ALLOW_PURGE=false` to disable the feature.

tags.go

@@ -16,7 +16,6 @@ import (
 // Tag highlights a keyword in displayed messages.
 type Tag struct {
 	ID            string `json:"id"`
-	Code          string `json:"code"` // two digits, shown on matching log lines
 	Pattern       string `json:"pattern"`
 	Label         string `json:"label,omitempty"` // shown instead of the pattern (presets)
 	Color         string `json:"color"`
@@ -28,47 +27,12 @@ type Tag struct {
 
 func defaultTags() []Tag {
 	return []Tag{
-		{ID: "warning", Code: "01", Pattern: "warning", Color: "#fdba74", WholeWord: true, Enabled: true},
+		{ID: "warning", Pattern: "warning", Color: "#fdba74", WholeWord: true, Enabled: true},
-		{ID: "error", Code: "02", Pattern: "error", Color: "#fca5a5", WholeWord: true, Enabled: true},
+		{ID: "error", Pattern: "error", Color: "#fca5a5", WholeWord: true, Enabled: true},
-		{ID: "ok", Code: "03", Pattern: "ok", Color: "#86efac", WholeWord: true, Enabled: true},
+		{ID: "ok", Pattern: "ok", Color: "#86efac", WholeWord: true, Enabled: true},
 	}
 }
 
-var codeRe = regexp.MustCompile(`^[0-9]{2}$`)
-
-// freeCode returns the lowest code from 01 to 99 not used by tags, or "" when
-// all are taken. A code stays with its tag until the tag is deleted.
-func freeCode(tags []Tag) string {
-	used := map[string]bool{}
-	for _, t := range tags {
-		used[t.Code] = true
-	}
-	for n := 1; n <= 99; n++ {
-		if c := fmt.Sprintf("%02d", n); !used[c] {
-			return c
-		}
-	}
-	return ""
-}
-
-// assignCodes gives a code to the tags that have none (files written before
-// codes existed) or share one with an earlier tag.
-func assignCodes(tags []Tag) bool {
-	changed := false
-	seen := map[string]bool{}
-	for i := range tags {
-		if codeRe.MatchString(tags[i].Code) && !seen[tags[i].Code] {
-			seen[tags[i].Code] = true
-			continue
-		}
-		tags[i].Code = ""
-		tags[i].Code = freeCode(tags)
-		seen[tags[i].Code] = true
-		changed = true
-	}
-	return changed
-}
-
 // Colors of the default tags in earlier versions: still unchanged, they are
 // switched to the new pastel defaults when the file is loaded.
 var oldDefaultColors = map[string]string{"warning": "#f59e0b", "error": "#ef4444", "ok": "#22c55e"}
@@ -104,7 +68,6 @@ func (e *codedError) Error() string {
 
 var (
 	errTagNotFound = &codedError{code: "tag_not_found", msg: "tag not found"}
-	errTooManyTags = &codedError{code: "too_many_tags", msg: "too many tags (99 at most)"}
 	colorRe        = regexp.MustCompile(`^#[0-9a-fA-F]{6}$`)
 )
 
@@ -145,7 +108,7 @@ func LoadTagStore(path string) (*TagStore, error) {
 	if err := json.Unmarshal(b, &s.tags); err != nil {
 		return nil, fmt.Errorf("%s: %w", path, err)
 	}
-	if c1, c2 := migrateDefaultColors(s.tags), assignCodes(s.tags); c1 || c2 {
+	if migrateDefaultColors(s.tags) {
 		if err := s.save(); err != nil {
 			return nil, err
 		}
@@ -182,9 +145,6 @@ func (s *TagStore) Create(t Tag) (Tag, error) {
 	t.ID = newID()
 	s.mu.Lock()
 	defer s.mu.Unlock()
-	if t.Code = freeCode(s.tags); t.Code == "" {
-		return t, errTooManyTags
-	}
 	s.tags = append(s.tags, t)
 	return t, s.save()
 }
@@ -198,7 +158,6 @@ func (s *TagStore) Update(id string, t Tag) (Tag, error) {
 	defer s.mu.Unlock()
 	for i := range s.tags {
 		if s.tags[i].ID == id {
-			t.Code = s.tags[i].Code // assigned by the server, never changed
 			s.tags[i] = t
 			return t, s.save()
 		}

tags_test.go

@@ -1,54 +0,0 @@
-package main
-
-import (
-	"os"
-	"path/filepath"
-	"slices"
-	"testing"
-)
-
-func TestTagCodes(t *testing.T) {
-	path := filepath.Join(t.TempDir(), "tags.json")
-	// File written before codes existed, with a duplicate code.
-	old := `[{"id":"a","pattern":"x","color":"#000000"},{"id":"b","code":"07","pattern":"y","color":"#000000"},{"id":"c","code":"07","pattern":"z","color":"#000000"}]`
-	if err := os.WriteFile(path, []byte(old), 0o644); err != nil {
-		t.Fatal(err)
-	}
-	s, err := LoadTagStore(path)
-	if err != nil {
-		t.Fatal(err)
-	}
-	got := []string{}
-	for _, tg := range s.List() {
-		got = append(got, tg.Code)
-	}
-	if want := []string{"01", "07", "02"}; !slices.Equal(got, want) {
-		t.Fatalf("migrated codes = %v, want %v", got, want)
-	}
-
-	n, err := s.Create(Tag{Pattern: "w", Color: "#000000"})
-	if err != nil || n.Code != "03" {
-		t.Fatalf("Create code = %q, %v; want 03", n.Code, err)
-	}
-	// The client cannot change a code.
-	u, err := s.Update("b", Tag{Code: "42", Pattern: "y2", Color: "#000000"})
-	if err != nil || u.Code != "07" {
-		t.Fatalf("Update code = %q, %v; want 07", u.Code, err)
-	}
-	// A deleted tag frees its code; the others keep theirs.
-	if err := s.Delete("a"); err != nil {
-		t.Fatal(err)
-	}
-	if n, _ := s.Create(Tag{Pattern: "v", Color: "#000000"}); n.Code != "01" {
-		t.Fatalf("code after delete = %q, want 01", n.Code)
-	}
-
-	// Codes are saved in the file.
-	s2, err := LoadTagStore(path)
-	if err != nil {
-		t.Fatal(err)
-	}
-	if got := s2.List()[0].Code; got != "07" {
-		t.Fatalf("reloaded code = %q, want 07", got)
-	}
-}

web/app.js

@@ -59,7 +59,6 @@ const I18N = {
     err_invalid_color: 'Invalid color (expected #rrggbb)',
     err_invalid_regex: 'Invalid regular expression',
     err_tag_not_found: 'Tag not found',
-    err_too_many_tags: 'Too many tags (99 at most)',
     err_live_logsql: 'Live view is not available in LogsQL mode',
     dateTime: 'Date & time',
     tzLabel: 'Time zone',
@@ -120,8 +119,9 @@ const I18N = {
     themeHelp: 'System follows the light/dark preference of your computer or phone.',
     logDisplay: 'Log display', fontSize: 'Font size',
     sizeTiny: 'Tiny', sizeSmall: 'Small', sizeMedium: 'Medium', sizeLarge: 'Large',
-    fontLabel: 'Font', fontSystem: 'System monospace (no download)',
+    density: 'Density', densityNormal: 'Normal', densityCompact: 'Compact',
-    fontHelp: 'Free fonts (SIL Open Font License) loaded by your browser from Bunny Fonts, a privacy-friendly European font service. Without internet access, the system font is used.',
+    fontLabel: 'Font', fontSystem: 'System monospace (no download)', fontBuiltin: 'built in, narrow',
+    fontHelp: 'Free fonts (SIL Open Font License). Iosevka is served by LogStream itself and works offline; it is narrow, so more text fits on each line. The others are loaded by your browser from Bunny Fonts, a privacy-friendly European font service; without internet access, the system font is used.',
     previewMsgs: ['error: link down on eth1, carrier lost', 'warning: disk /dev/sda temperature 58°C', 'backup finished: ok (12.4 GB in 00:14:32)'],
     dangerZone: 'Danger zone',
     purgeHelp: 'Permanently delete every stored log to start from scratch. Color tags and settings are kept.',
@@ -149,9 +149,7 @@ const I18N = {
     hCappedTitle: 'The chosen division would exceed 300 intervals over this range: it has been enlarged.',
     hUnzoom: '× Reset zoom', unitDay: 'd',
     toTop: 'Back to top',
-    colRcv: 'Received', colMt: 'Message time', colSev: 'Severity', colHost: 'Host', colApp: 'App', colCodes: 'Filters', colMsg: 'Message',
+    colRcv: 'Received', colMt: 'Message time', colSev: 'Severity', colHost: 'Host', colApp: 'App', colMsg: 'Message',
-    codesTitle: 'Codes of the color tags found in the message',
-    tagCodeTitle: 'Code shown on the log lines this tag matches',
     colGrip: 'Drag to resize, double-click for the automatic width',
     resetCols: 'Reset column widths', colsReset: 'Column widths reset',
     colsHelp: 'Drag the edge of a column header in the log list to resize it (remembered by this browser).',
@@ -212,7 +210,6 @@ const I18N = {
     err_invalid_color: 'Couleur invalide (format #rrggbb attendu)',
     err_invalid_regex: 'Expression régulière invalide',
     err_tag_not_found: 'Tag introuvable',
-    err_too_many_tags: 'Trop de tags (99 au maximum)',
     err_live_logsql: 'Le direct n\'est pas disponible en mode LogsQL',
     dateTime: 'Date et heure',
     tzLabel: 'Fuseau horaire',
@@ -273,8 +270,9 @@ const I18N = {
     themeHelp: 'Système suit la préférence clair/sombre de votre ordinateur ou de votre téléphone.',
     logDisplay: 'Affichage des logs', fontSize: 'Taille du texte',
     sizeTiny: 'Très petite', sizeSmall: 'Petite', sizeMedium: 'Moyenne', sizeLarge: 'Grande',
-    fontLabel: 'Police', fontSystem: 'Monospace du système (aucun téléchargement)',
+    density: 'Densité', densityNormal: 'Normale', densityCompact: 'Compacte',
-    fontHelp: 'Polices libres (licence SIL Open Font) chargées par votre navigateur depuis Bunny Fonts, un service européen respectueux de la vie privée. Sans accès à internet, la police du système est utilisée.',
+    fontLabel: 'Police', fontSystem: 'Monospace du système (aucun téléchargement)', fontBuiltin: 'intégrée, étroite',
+    fontHelp: 'Polices libres (licence SIL Open Font). Iosevka est servie par LogStream lui-même et fonctionne hors ligne ; elle est étroite, donc chaque ligne affiche plus de texte. Les autres sont chargées par votre navigateur depuis Bunny Fonts, un service européen respectueux de la vie privée ; sans accès à internet, la police du système est utilisée.',
     previewMsgs: ['error: link down on eth1, carrier lost', 'warning: disk /dev/sda temperature 58°C', 'backup finished: ok (12.4 GB in 00:14:32)'],
     dangerZone: 'Zone de danger',
     purgeHelp: 'Supprime définitivement tous les logs stockés pour repartir de zéro. Les tags de couleur et les réglages sont conservés.',
@@ -302,9 +300,7 @@ const I18N = {
     hCappedTitle: 'La division choisie dépasserait 300 intervalles sur cette plage : elle a été élargie.',
     hUnzoom: '× Annuler le zoom', unitDay: 'j',
     toTop: 'Revenir en haut',
-    colRcv: 'Réception', colMt: 'Heure message', colSev: 'Sévérité', colHost: 'Hôte', colApp: 'App', colCodes: 'Filtres', colMsg: 'Message',
+    colRcv: 'Réception', colMt: 'Heure message', colSev: 'Sévérité', colHost: 'Hôte', colApp: 'App', colMsg: 'Message',
-    codesTitle: 'Codes des tags de couleur trouvés dans le message',
-    tagCodeTitle: 'Code affiché sur les lignes de log où ce tag est trouvé',
     colGrip: 'Glisser pour redimensionner, double-clic pour la largeur automatique',
     resetCols: 'Réinitialiser les colonnes', colsReset: 'Largeurs de colonnes réinitialisées',
     colsHelp: 'Glissez le bord d\'un en-tête de colonne de la liste pour la redimensionner (mémorisé par ce navigateur).',
@@ -537,9 +533,11 @@ $('#themeSwitch').addEventListener('click', (ev) => {
 
 /* ================= Log font and size ================= */
 
-// Free monospace fonts, served by Bunny Fonts (https://fonts.bunny.net).
+// Free monospace fonts, served by Bunny Fonts (https://fonts.bunny.net), except the
+// built-in ones (web/fonts, declared in style.css), which also work offline.
 const LOG_FONTS = [
   { id: 'system' },
+  { id: 'iosevka', family: 'Iosevka', builtin: true },
   { id: 'jetbrains-mono', family: 'JetBrains Mono' },
   { id: 'fira-code', family: 'Fira Code' },
   { id: 'source-code-pro', family: 'Source Code Pro' },
@@ -554,7 +552,8 @@ const LOG_FONTS = [
   { id: 'dm-mono', family: 'DM Mono', weights: '400,500' },
 ];
 const LOG_SIZES = { tiny: '10.5px', small: '11.5px', medium: '12.5px', large: '14px' };
-const ui = { font: 'system', size: 'medium' };
+const LOG_DENSITIES = ['normal', 'compact'];
+const ui = { font: 'system', size: 'medium', density: 'normal' };
 
 function applyLogFont(id) {
   const f = LOG_FONTS.find((x) => x.id === id) || LOG_FONTS[0];
@@ -564,6 +563,10 @@ function applyLogFont(id) {
     root.removeProperty('--log-font');
     return;
   }
+  if (f.builtin) {
+    root.setProperty('--log-font', `'${f.family}', var(--mono)`);
+    return;
+  }
   const href = `https://fonts.bunny.net/css?family=${f.id}:${f.weights || '400,700'}&display=swap`;
   let link = document.getElementById('logFontCss');
   if (!link) {
@@ -579,13 +582,22 @@ function applyLogSize(id) {
   document.documentElement.style.setProperty('--log-size', LOG_SIZES[ui.size]);
 }
 
+function applyLogDensity(id) {
+  ui.density = LOG_DENSITIES.includes(id) ? id : 'normal';
+  document.documentElement.dataset.density = ui.density;
+}
+
 function renderInterface() {
   renderThemeSwitch();
   for (const b of document.querySelectorAll('#sizeSwitch [data-size]')) {
     b.setAttribute('aria-checked', String(b.dataset.size === ui.size));
   }
+  for (const b of document.querySelectorAll('#densitySwitch [data-density]')) {
+    b.setAttribute('aria-checked', String(b.dataset.density === ui.density));
+  }
   const sel = $('#fontSelect');
-  sel.innerHTML = LOG_FONTS.map((f) => `<option value="${f.id}">${esc(f.family || t('fontSystem'))}</option>`).join('');
+  const fontName = (f) => (!f.family ? t('fontSystem') : f.builtin ? `${f.family} (${t('fontBuiltin')})` : f.family);
+  sel.innerHTML = LOG_FONTS.map((f) => `<option value="${f.id}">${esc(fontName(f))}</option>`).join('');
   sel.value = ui.font;
   renderFontPreview();
   renderHistoSettings();
@@ -609,6 +621,13 @@ $('#sizeSwitch').addEventListener('click', (ev) => {
   store.set('logSize', ui.size);
   renderInterface();
 });
+$('#densitySwitch').addEventListener('click', (ev) => {
+  const b = ev.target.closest('[data-density]');
+  if (!b) return;
+  applyLogDensity(b.dataset.density);
+  store.set('logDensity', ui.density);
+  renderInterface();
+});
 $('#fontSelect').addEventListener('change', (ev) => {
   applyLogFont(ev.target.value);
   store.set('logFont', ui.font);
@@ -702,8 +721,7 @@ function compileMatchers() {
       // A regex may name a group "hl" to color only that part of the match.
       const hl = tag.regex && /\(\?P?<hl>/.test(tag.pattern);
       if (hl) src = src.replace(/\(\?P<hl>/g, '(?<hl>');
-      out.push({ re: new RegExp(src, 'gu' + (hl ? 'd' : '') + (tag.caseSensitive ? '' : 'i')), html: `<mark class="tag" style="${tagStyle(tag.color)}">`,
+      out.push({ re: new RegExp(src, 'gu' + (hl ? 'd' : '') + (tag.caseSensitive ? '' : 'i')), html: `<mark class="tag" style="${tagStyle(tag.color)}">` });
-        code: tag.code, name: tag.label || tag.pattern });
     } catch (e) {
       console.warn('Tag skipped (invalid pattern):', tag.pattern, e.message);
     }
@@ -745,30 +763,6 @@ function highlight(text) {
   return out + esc(text.slice(pos));
 }
 
-// Badges with the codes of the tags found in a message, in list order. The
-// column has room for 3: beyond that, 2 badges and "+N" (all in the tooltip).
-function codesHTML(text) {
-  text = String(text ?? '');
-  const found = [];
-  for (const m of state.matchers) {
-    if (!m.code || !text) continue;
-    m.re.lastIndex = 0;
-    let x;
-    while ((x = m.re.exec(text)) !== null) {
-      if (x[0] === '') { m.re.lastIndex++; continue; }
-      const g = x.indices?.groups?.hl;
-      if (!x.indices?.groups || g) { found.push(m); break; }
-    }
-  }
-  if (!found.length) return '';
-  const shown = found.length > 3 ? found.slice(0, 2) : found;
-  const title = found.map((m) => `${m.code} ${m.name}`).join('\n');
-  return `<span title="${esc(title)}">`
-    + shown.map((m) => `<b>${esc(m.code)}</b>`).join('')
-    + (found.length > 3 ? `<b class="more">+${found.length - 2}</b>` : '')
-    + '</span>';
-}
-
 /* ================= List rendering ================= */
 
 const SEV_CLASS = { emerg: 'crit', alert: 'crit', crit: 'crit', err: 'err', warning: 'warning', notice: 'notice', info: 'info', debug: 'debug' };
@@ -794,7 +788,6 @@ function rowHTML(r, isNew) {
     + (r.app
       ? `<span class="app${r.source_type === 'docker' ? ' proj' : ''}" data-act="app"${r.source_type === 'docker' ? ` style="--h:${hueOf(r.compose_project || r.container || r.app)}"` : ''} title="${esc((r.compose_project ? r.compose_project + '/' : '') + (r.container ? r.container + ' · ' : '') + r.app + ' · ' + t('clickApp'))}">${r.source_type === 'docker' ? DOCKER_ICON : ''}${esc(r.app)}</span>`
       : '<span class="app"></span>')
-    + `<span class="codes">${codesHTML(r._msg)}</span>`
     + `<div class="msg">${highlight(r._msg)}</div>`
     + '</article>';
 }
@@ -861,9 +854,7 @@ function renderList() {
 function rehighlight() {
   for (const row of list.children) {
     const r = recOf.get(row);
-    if (!r) continue;
+    if (r) row.querySelector('.msg').innerHTML = highlight(r._msg);
-    row.querySelector('.msg').innerHTML = highlight(r._msg);
-    row.querySelector('.codes').innerHTML = codesHTML(r._msg);
   }
 }
 
@@ -2060,7 +2051,6 @@ function tagRowHTML(tag) {
   const opt = (field, label, title) =>
     `<label class="opt" title="${esc(title)}"><input type="checkbox" data-f="${field}"${tag[field] ? ' checked' : ''}>${esc(label)}</label>`;
   return `<div class="tag-row${tag.enabled ? '' : ' off'}" data-id="${esc(tag.id)}">
-    <span class="tag-code" title="${esc(t('tagCodeTitle'))}">${esc(tag.code || '··')}</span>
     <input type="color" value="${esc(tag.color)}" data-f="color" aria-label="${esc(t('colorAria'))}">
     <input type="text" value="${esc(tag.pattern)}" data-f="pattern" placeholder="${esc(t('keyword'))}" spellcheck="false" aria-label="${esc(t('keyword'))}">
     <span class="preview" title="${esc(tag.pattern)}"><mark class="tag" style="${tagStyle(tag.color)}">${esc(tag.label || tag.pattern || t('preview'))}</mark></span>
@@ -2190,6 +2180,7 @@ $('#settingsDlg').addEventListener('click', (ev) => { if (ev.target === ev.curre
 }
 applyLogFont(store.get('logFont', 'system'));
 applyLogSize(store.get('logSize', 'medium'));
+applyLogDensity(store.get('logDensity', 'normal'));
 applyLang();
 $('#range').value = store.get('range', '1h');
 if (!$('#range').value) $('#range').value = '1h';

web/fonts/OFL-Iosevka.txt

@@ -0,0 +1,110 @@
+Copyright (c) 2015-2023, Renzhi Li (aka. Belleve Invis, belleve@typeof.net)
+
+This Font Software is licensed under the SIL Open Font License, Version 1.1.
+
+This license is copied below, and is also available with a FAQ at:
+http://scripts.sil.org/OFL
+
+--------------------------
+
+
+SIL Open Font License v1.1
+====================================================
+
+
+Preamble
+----------
+
+The goals of the Open Font License (OFL) are to stimulate worldwide
+development of collaborative font projects, to support the font creation
+efforts of academic and linguistic communities, and to provide a free and
+open framework in which fonts may be shared and improved in partnership
+with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and
+redistributed freely as long as they are not sold by themselves. The
+fonts, including any derivative works, can be bundled, embedded, 
+redistributed and/or sold with any software provided that any reserved
+names are not used by derivative works. The fonts and derivatives,
+however, cannot be released under any other type of license. The
+requirement for fonts to remain under this license does not apply
+to any document created using the fonts or their derivatives.
+
+
+Definitions
+-------------
+
+`"Font Software"` refers to the set of files released by the Copyright
+Holder(s) under this license and clearly marked as such. This may
+include source files, build scripts and documentation.
+
+`"Reserved Font Name"` refers to any names specified as such after the
+copyright statement(s).
+
+`"Original Version"` refers to the collection of Font Software components as
+distributed by the Copyright Holder(s).
+
+`"Modified Version"` refers to any derivative made by adding to, deleting,
+or substituting -- in part or in whole -- any of the components of the
+Original Version, by changing formats or by porting the Font Software to a
+new environment.
+
+`"Author"` refers to any designer, engineer, programmer, technical
+writer or other person who contributed to the Font Software.
+
+
+Permission & Conditions
+------------------------
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of the Font Software, to use, study, copy, merge, embed, modify,
+redistribute, and sell modified and unmodified copies of the Font
+Software, subject to the following conditions:
+
+1. Neither the Font Software nor any of its individual components,
+   in Original or Modified Versions, may be sold by itself.
+
+2. Original or Modified Versions of the Font Software may be bundled,
+   redistributed and/or sold with any software, provided that each copy
+   contains the above copyright notice and this license. These can be
+   included either as stand-alone text files, human-readable headers or
+   in the appropriate machine-readable metadata fields within text or
+   binary files as long as those fields can be easily viewed by the user.
+
+3. No Modified Version of the Font Software may use the Reserved Font
+   Name(s) unless explicit written permission is granted by the corresponding
+   Copyright Holder. This restriction only applies to the primary font name as
+   presented to the users.
+
+4. The name(s) of the Copyright Holder(s) or the Author(s) of the Font
+   Software shall not be used to promote, endorse or advertise any
+   Modified Version, except to acknowledge the contribution(s) of the
+   Copyright Holder(s) and the Author(s) or with their explicit written
+   permission.
+
+5. The Font Software, modified or unmodified, in part or in whole,
+   must be distributed entirely under this license, and must not be
+   distributed under any other license. The requirement for fonts to
+   remain under this license does not apply to any document created
+   using the Font Software.
+
+
+
+Termination
+-----------
+
+This license becomes null and void if any of the above conditions are
+not met.
+
+
+    DISCLAIMER
+    
+    THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
+    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
+    OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
+    COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+    INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
+    DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+    FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
+    OTHER DEALINGS IN THE FONT SOFTWARE.

web/index.html

@@ -107,7 +107,6 @@
       <span data-col="sev"><span class="lbl" data-i18n="colSev">Severity</span><i class="grip" data-i18n-title="colGrip"></i></span>
       <span data-col="host"><span class="lbl" data-i18n="colHost">Host</span><i class="grip" data-i18n-title="colGrip"></i></span>
       <span data-col="app"><span class="lbl" data-i18n="colApp">App</span><i class="grip" data-i18n-title="colGrip"></i></span>
-      <span data-col="codes"><span class="lbl" data-i18n="colCodes" data-i18n-title="codesTitle">Filters</span></span>
       <span data-col="msg"><span class="lbl" data-i18n="colMsg">Message</span></span>
     </div>
     <main id="list" class="list"></main>
@@ -282,6 +281,11 @@
                   <button type="button" role="radio" data-size="medium" data-i18n="sizeMedium">Medium</button>
                   <button type="button" role="radio" data-size="large" data-i18n="sizeLarge">Large</button>
                 </div>
+                <span class="lbl" data-i18n="density">Density</span>
+                <div id="densitySwitch" class="seg" role="radiogroup" data-i18n-aria="density">
+                  <button type="button" role="radio" data-density="normal" data-i18n="densityNormal">Normal</button>
+                  <button type="button" role="radio" data-density="compact" data-i18n="densityCompact">Compact</button>
+                </div>
                 <label for="fontSelect" data-i18n="fontLabel">Font</label>
                 <select id="fontSelect" class="field"></select>
               </div>

web/style.css

@@ -1,3 +1,8 @@
+/* Iosevka (SIL OFL, web/fonts/OFL-Iosevka.txt): a narrow monospace font served by LogStream
+   itself, so it also works offline. Latin subset only; other scripts fall back to --mono. */
+@font-face { font-family: "Iosevka"; src: url("fonts/iosevka-400.woff2") format("woff2"); font-weight: 400 500; font-display: swap; }
+@font-face { font-family: "Iosevka"; src: url("fonts/iosevka-700.woff2") format("woff2"); font-weight: 600 800; font-display: swap; }
+
 /* ---------- Theme: everything goes through these variables ---------- */
 :root {
   --bg: #f6f7f9;
@@ -37,8 +42,7 @@
   --tag-warning: #fdba74;
   --tag-warning-text: #111827;
 
-  --log-size: 12.5px;
+  --log-size: 12.5px;   /* Settings > Interface > Font size */
-  --codes-w: 4.9rem;    /* tag codes column: room for 3 badges */   /* Settings > Interface > Font size */
   /* --log-font is set by Settings > Interface > Font (defaults to --mono) */
   --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Code", Menlo, Consolas, monospace;
   --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
@@ -297,13 +301,13 @@ body.busy .progress::after {
 .list { margin: 6px 20px 0; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
 .list:empty { display: none; }
 
-/* Columns: received, message time, severity, host, app, tag codes, message. Widths come from
+/* Columns: received, message time, severity, host, app, message. Widths come from
    --col-* (set on #table when a column has been resized, see app.js), shared by
    the header and every row through subgrid so that the columns line up. */
 .table {
   display: grid;
   grid-template-columns: var(--col-rcv, max-content) var(--col-mt, max-content) var(--col-sev, 4.6rem)
-    var(--col-host, minmax(5rem, 9rem)) var(--col-app, minmax(4rem, 8rem)) var(--codes-w) minmax(0, 1fr);
+    var(--col-host, minmax(5rem, 9rem)) var(--col-app, minmax(4rem, 8rem)) minmax(0, 1fr);
   column-gap: 12px;
   margin: 6px 20px 0; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
   overflow: clip; /* rounded corners without breaking the sticky header (hidden would) */
@@ -332,7 +336,7 @@ body.col-resizing, body.col-resizing * { cursor: col-resize !important; user-sel
 
 .row {
   display: grid;
-  grid-template-columns: max-content max-content 4.6rem minmax(5rem, 9rem) minmax(4rem, 8rem) var(--codes-w) 1fr;
+  grid-template-columns: max-content max-content 4.6rem minmax(5rem, 9rem) minmax(4rem, 8rem) 1fr;
   gap: 0 12px; align-items: baseline;
   padding: 5px 14px 5px 11px;
   border-left: 3px solid transparent;
@@ -342,6 +346,9 @@ body.col-resizing, body.col-resizing * { cursor: col-resize !important; user-sel
   cursor: pointer;
 }
 .row:last-child { border-bottom: 0; }
+/* Settings > Interface > Density: compact fits about 50% more lines on screen */
+:root[data-density="compact"] .row { padding-top: 1px; padding-bottom: 1px; line-height: 1.25; }
+:root[data-density="compact"] .row .sev { padding-top: 0; padding-bottom: 0; line-height: 1.3; }
 .row:hover { background: var(--row-hover); }
 .row:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
 .row.new { animation: flash 1.2s ease-out; }
@@ -373,15 +380,6 @@ body.col-resizing, body.col-resizing * { cursor: col-resize !important; user-sel
 .row.sev-crit, .row.sev-err, .row.sev-warning { border-left-color: var(--sev); }
 .row.sev-crit, .row.sev-err { background: color-mix(in srgb, var(--sev) 7%, transparent); }
 .row .host[data-act], .row .app[data-act] { cursor: pointer; }
-/* Codes of the tags found in the message: grey badges, fixed size */
-.row .codes { white-space: nowrap; overflow: hidden; }
-.row .codes > span { display: inline-flex; gap: 3px; vertical-align: 1px; }
-.row .codes b, .tag-code {
-  min-width: 2.2ch; padding: 1px 4px; border-radius: 4px; text-align: center;
-  font-family: var(--mono); font-size: 10.5px; font-weight: 700; line-height: 1.35; font-variant-numeric: tabular-nums;
-  background: #b4bac3; color: #111827;
-}
-.row .codes b.more { background: none; box-shadow: inset 0 0 0 1px #b4bac3; color: var(--muted); }
 .row .host[data-act]:hover, .row .app[data-act]:hover { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
 
 mark.tag {
@@ -485,7 +483,6 @@ dialog.settings .dlg > header { padding: 14px 16px 14px 22px; border-bottom: 1px
 .preview-list .row .host { grid-area: host; }
 .preview-list .row .app { grid-area: app; display: block; }
 .preview-list .row .msg { grid-area: msg; }
-.preview-list .row .codes { display: none; }
 
 dialog {
   width: min(720px, calc(100vw - 32px)); max-height: calc(100vh - 64px);
@@ -603,12 +600,11 @@ input.switch:focus-visible { outline: 2px solid var(--accent); outline-offset: 2
 .tag-list { display: flex; flex-direction: column; gap: 8px; margin-top: 12px; }
 .tag-row {
   display: grid; align-items: center; gap: 8px 10px;
-  grid-template-columns: auto 38px minmax(8rem, 1fr) 7.5rem auto 36px;
+  grid-template-columns: 38px minmax(8rem, 1fr) 7.5rem auto 36px;
   padding: 8px 10px; border: 1px solid var(--border); border-radius: 10px;
   background: var(--panel-2);
 }
 .tag-row.off { opacity: .55; }
-.tag-row .tag-code { font-size: 12px; padding: 3px 6px; cursor: default; }
 .tag-row input[type="color"] {
   width: 38px; height: 32px; padding: 0; border: 1px solid var(--border); border-radius: 8px;
   background: none; cursor: pointer;
@@ -651,8 +647,8 @@ input.switch:focus-visible { outline: 2px solid var(--accent); outline-offset: 2
   .table .list { display: block; margin: 0; }
   .list-head { display: none; }
   .row, .table .row {
-    grid-template-columns: auto auto 1fr auto;
+    grid-template-columns: auto auto 1fr;
-    grid-template-areas: "rcv sev host codes" "msg msg msg msg";
+    grid-template-areas: "rcv sev host" "msg msg msg";
     gap: 3px 8px; padding: 8px 12px 8px 10px;
   }
   .row time.rcv { grid-area: rcv; }
@@ -660,7 +656,6 @@ input.switch:focus-visible { outline: 2px solid var(--accent); outline-offset: 2
   .row .sev { grid-area: sev; }
   .row .host { grid-area: host; justify-self: end; max-width: 100%; }
   .row .app { display: none; }
-  .row .codes { grid-area: codes; }
   .row .msg { grid-area: msg; }
   .details { grid-column: 1 / -1; }
   .details dl { grid-template-columns: 1fr; }
@@ -678,14 +673,15 @@ input.switch:focus-visible { outline: 2px solid var(--accent); outline-offset: 2
   }
   .set-nav button span { max-width: 100%; overflow: hidden; text-overflow: ellipsis; }
   .set-panels { padding: 0 16px 18px; }
-  #sizeSwitch { display: flex; }
+  #sizeSwitch, #densitySwitch { display: flex; }
-  #sizeSwitch button { flex: 1; padding: 0 4px; white-space: nowrap; font-size: 12px; }
+  #sizeSwitch button, #densitySwitch button { flex: 1; padding: 0 4px; white-space: nowrap; font-size: 12px; }
+  :root[data-density="compact"] .row { padding-top: 3px; padding-bottom: 3px; }
   .field-grid select { margin-bottom: 6px; }
   .status { padding: 6px 16px; }
-  .tag-row { grid-template-columns: auto 38px 1fr 36px; }
+  .tag-row { grid-template-columns: 38px 1fr 36px; }
   .tag-row .preview { display: none; }
   .tag-row .opts { grid-column: 1 / -1; grid-row: 2; flex-wrap: wrap; }
-  .tag-row [data-del] { grid-column: 4; grid-row: 1; }
+  .tag-row [data-del] { grid-column: 3; grid-row: 1; }
 }
 
 /* ---------- Login page (AUTH_MODE=local) ---------- */