diff --git a/README.md b/README.md
index a06ce7b..368e9db 100644
--- a/README.md
+++ b/README.md
@@ -182,8 +182,9 @@ des pages HTML **servies localement** par l'application elle-même :
 - **Statistiques** affiche les pomodoros du jour / semaine, la série de jours
   consécutifs, le total et l'historique des 7 derniers jours.
 - **Réglages** présente un formulaire complet (durées, objectif, son, langue,
-  profil actif, rappels santé) : l'enregistrement est appliqué immédiatement
-  par l'application.
+  rappels santé) avec un **éditeur de périodes** : créez, modifiez ou supprimez
+  vos propres profils (nom, travail, pauses, cycles) et choisissez la période
+  active. L'enregistrement est appliqué immédiatement par l'application.
 
 L'application lance un petit serveur sur `127.0.0.1` (premier port libre à
 partir de `38943`), uniquement accessible en local. Aucune donnée ne quitte
diff --git a/src/webserver.nim b/src/webserver.nim
index 33a7135..ff26dfe 100644
--- a/src/webserver.nim
+++ b/src/webserver.nim
@@ -256,6 +256,16 @@ input[type=number]:focus,select:focus{outline:none;border-color:#14b8a6;box-shad
 .mini:hover{background:#f0fdfa;border-color:#5eead4}
 .mini.danger{color:#b91c1c}
 .mini.danger:hover{background:#fef2f2;border-color:#fca5a5}
+.proflist{display:flex;flex-direction:column;gap:.8rem}
+.profilrow{background:#fff;border:1px solid #e2e8f0;border-radius:14px;padding:.9rem 1rem;box-shadow:0 2px 8px rgba(15,118,110,.05)}
+.profilrow.active{border-color:#5eead4;box-shadow:0 0 0 2px rgba(20,184,166,.15)}
+.phead{display:flex;align-items:center;gap:.7rem;margin-bottom:.6rem}
+.pname{flex:1;min-width:0;padding:.45rem .6rem;border:1.5px solid #cbd5e1;border-radius:9px;font-size:.98rem;font-family:inherit;color:#1e293b;background:#fff}
+.pfields{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:.6rem}
+.pcell{display:flex;flex-direction:column;gap:.25rem;font-size:.85rem;font-weight:600;color:#64748b}
+.pcell input{width:100%;padding:.4rem .5rem;border:1.5px solid #cbd5e1;border-radius:9px;font-size:.95rem;font-family:inherit;color:#1e293b;background:#fff}
+.pcell input:focus,.pname:focus{outline:none;border-color:#14b8a6;box-shadow:0 0 0 3px rgba(20,184,166,.18)}
+.activepick{display:flex;align-items:center;gap:.35rem;font-weight:700;color:#0f766e;cursor:pointer;white-space:nowrap}
 .saved{text-align:center;padding:2.5rem 1.5rem}
 .savedemoji{font-size:3rem;margin-bottom:.4rem}
 footer{margin-top:2.8rem;padding-top:1.2rem;border-top:1px solid #e2e8f0;color:#94a3b8;font-size:.9rem;text-align:center}
@@ -281,6 +291,9 @@ footer{margin-top:2.8rem;padding-top:1.2rem;border-top:1px solid #e2e8f0;color:#
   .progress{background:#1e293b}
   .empty{color:#94a3b8;border-color:#334155}
   .remrow.off{opacity:.55}
+  .profilrow{background:#0f172a;border-color:#1e293b}
+  .pname,.pcell input{background:#0b1220;color:#e2e8f0;border-color:#334155}
+  .activepick{color:#5eead4}
 }
 </style>
 </head>
@@ -333,17 +346,19 @@ proc renderHelp*(cfg: Config): string =
 
   b.add "<h2>⏱️ " & t(lang, "Les périodes", "The periods") & "</h2>"
   b.add "<div class='card'><p>" & t(lang,
-    "Un cycle classique : travail (25 min), pause courte (5 min) puis, après plusieurs cycles, une pause longue (15 min). Tout est configurable via les profils :",
-    "A classic cycle: work (25 min), short break (5 min) then, after several cycles, a long break (15 min). Everything is configurable via the profiles:") & "</p>"
-  b.add "<table><tr><th>👤 " & t(lang, "Profil", "Profile") & "</th><th>💼 " & t(lang, "Travail", "Work") &
-    "</th><th>☕ " & t(lang, "Pause courte", "Short break") & "</th><th>🛋️ " & t(lang, "Pause longue", "Long break") &
-    "</th><th>🔁 " & t(lang, "Cycles", "Cycles") & "</th></tr>"
-  b.add "<tr><td>" & t(lang, "Classique", "Classic") & "</td><td>25 min</td><td>5 min</td><td>15 min</td><td>4</td></tr>"
-  b.add "<tr><td>Deep Work</td><td>50 min</td><td>10 min</td><td>20 min</td><td>4</td></tr>"
-  b.add "<tr><td>Sprint</td><td>15 min</td><td>3 min</td><td>10 min</td><td>6</td></tr></table>"
+    "Un cycle enchaîne travail, pause courte puis, après plusieurs cycles, une pause longue. Créez et modifiez vos propres périodes depuis la page ⚙️ Réglages :",
+    "A cycle chains work, short break then, after several cycles, a long break. Create and edit your own profiles from the ⚙️ Settings page:") & "</p>"
+  b.add "<table><tr><th>⭐ " & t(lang, "Active", "Active") & "</th><th>👤 " & t(lang, "Période", "Profile") &
+    "</th><th>💼 " & t(lang, "Travail", "Work") & "</th><th>☕ " & t(lang, "Pause courte", "Short break") &
+    "</th><th>🛋️ " & t(lang, "Pause longue", "Long break") & "</th><th>🔁 " & t(lang, "Cycles", "Cycles") & "</th></tr>"
+  for p in cfg.profiles:
+    let star = if p.name == cfg.activeProfile: "⭐" else: ""
+    b.add "<tr><td>" & star & "</td><td><b>" & htmlEscape(p.name) & "</b></td><td>" & $p.workMin &
+      "</td><td>" & $p.shortBreakMin & "</td><td>" & $p.longBreakMin & "</td><td>" & $p.cycles & "</td></tr>"
+  b.add "</table>"
   b.add "<p class='hint'>" & t(lang,
-    "Le profil actif se choisit dans le menu de l'icône (« Profils »).",
-    "The active profile is chosen from the icon menu (“Profiles”).") & "</p></div>"
+    "La période active est choisie dans le menu de l'icône (« Profils ») ou dans les réglages.",
+    "The active profile is chosen from the icon menu (“Profiles”) or in settings.") & "</p></div>"
 
   b.add "<h2>☕ " & t(lang, "Pendant une pause", "During a break") & "</h2>"
   b.add "<div class='card'><ul class='clean'>"
@@ -474,14 +489,24 @@ proc remindersJson(rs: seq[HealthReminder]): string =
     items.add "{\"text\":" & $(%r.text) & ",\"enabled\":" & $(%r.enabled) & "}"
   "[" & items.join(",") & "]"
 
+proc profilesJson(ps: seq[Profile]): string =
+  ## Sérialise les périodes (profils) en JSON (compact) pour l'éditeur.
+  var items: seq[string]
+  for p in ps:
+    items.add "{\"name\":" & $(%p.name) &
+      ",\"workMin\":" & $(%p.workMin) &
+      ",\"shortBreakMin\":" & $(%p.shortBreakMin) &
+      ",\"longBreakMin\":" & $(%p.longBreakMin) &
+      ",\"cycles\":" & $(%p.cycles) & "}"
+  "[" & items.join(",") & "]"
+
 proc renderSettings*(cfg: Config): string =
   let lang = resolveLang(cfg)
 
-  var profileOpts = ""
-  for p in cfg.profiles:
-    let sel = if p.name == cfg.activeProfile: " selected" else: ""
-    profileOpts.add "<option value='" & htmlEscape(p.name) & "'" & sel & ">" &
-                    htmlEscape(p.name) & "</option>"
+  var activeIdx = 0
+  for i, p in cfg.profiles:
+    if p.name == cfg.activeProfile:
+      activeIdx = i
 
   let langOpts =
     "<option value='auto'" & (if cfg.lang == "auto": " selected" else: "") & ">🌐 " &
@@ -490,12 +515,12 @@ proc renderSettings*(cfg: Config): string =
     "<option value='en'" & (if cfg.lang == "en": " selected" else: "") & ">🇬🇧 English</option>"
 
   var b = ""
-  b.add "<form method='post' action='/settings' onsubmit='syncReminders()'>"
+  b.add "<form method='post' action='/settings' onsubmit='syncReminders(); syncProfiles()'>"
 
   # --- Minuteur ---
   b.add "<div class='card'><h2>⏱️ " & t(lang, "Minuteur", "Timer") & "</h2>"
   b.add "<p class='hint'>" & t(lang,
-    "Valeurs de base utilisées quand aucun profil ne correspond.",
+    "Valeurs de base utilisées quand aucune période ne correspond.",
     "Base values used when no profile matches.") & "</p>"
   b.add "<div class='grid2'>"
   b.add numField("💼", t(lang, "Travail (min)", "Work (min)"), "workMin", cfg.workMin, 1)
@@ -514,13 +539,15 @@ proc renderSettings*(cfg: Config): string =
        "<select name='lang'>" & langOpts & "</select></label>"
   b.add "</div></div>"
 
-  # --- Profil actif ---
-  b.add "<div class='card'><h2>👤 " & t(lang, "Profil actif", "Active profile") & "</h2>"
+  # --- Périodes (éditeur client) ---
+  b.add "<div class='card'><h2>📚 " & t(lang, "Périodes", "Profiles") & "</h2>"
   b.add "<p class='hint'>" & t(lang,
-    "Détermine les durées utilisées pour les prochaines périodes.",
-    "Determines the durations used for the next periods.") & "</p>"
-  b.add "<label class='field'><span class='flabel'>📦 " & t(lang, "Profil", "Profile") & "</span>" &
-       "<select name='activeProfile'>" & profileOpts & "</select></label>"
+    "Créez et modifiez vos périodes : nom, travail, pauses courtes et longues, cycles. Cochez ★ pour choisir la période active.",
+    "Create and edit your profiles: name, work, short and long breaks, cycles. Check ★ to pick the active profile.") & "</p>"
+  b.add "<div id='profiles'></div>"
+  b.add "<button type='button' class='btn ghost' onclick='addProfile()' style='margin-top:.8rem'>➕ " &
+       t(lang, "Ajouter une période", "Add a profile") & "</button>"
+  b.add "<input type='hidden' name='profiles_json' id='profiles_json'>"
   b.add "</div>"
 
   # --- Notifications et système ---
@@ -548,6 +575,8 @@ proc renderSettings*(cfg: Config): string =
 
   b.add "<script>"
   b.add "var reminders = " & remindersJson(cfg.healthReminders) & ";"
+  b.add "var profiles = " & profilesJson(cfg.profiles) & ";"
+  b.add "var activeIdx = " & $activeIdx & ";"
   b.add """var R = function(fr, en){ return document.documentElement.lang === 'fr' ? fr : en; };
 function esc(s){ return s.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;').replace(/"/g,'&quot;'); }
 function renderReminders(){
@@ -580,7 +609,57 @@ function editReminder(i){
 function removeReminder(i){ reminders.splice(i, 1); renderReminders(); }
 function toggleReminder(i){ reminders[i].enabled = !reminders[i].enabled; }
 function syncReminders(){ document.getElementById('reminders_json').value = JSON.stringify(reminders); }
-renderReminders();
+function renderProfiles(){
+  var el = document.getElementById('profiles');
+  if (profiles.length === 0){
+    el.innerHTML = '<div class="empty">' + R('🌱 Aucune période.','🌱 No profiles yet.') + '</div>';
+    return;
+  }
+  var html = '<div class="proflist">';
+  for (var i = 0; i < profiles.length; i++){
+    var p = profiles[i];
+    html += '<div class="profilrow' + (i === activeIdx ? ' active' : '') + '">' +
+      '<div class="phead">' +
+      '<label class="activepick"><input type="radio" name="active_profile" value="' + i + '" ' + (i === activeIdx ? 'checked' : '') + ' onchange="setActive(' + i + ')"> <span>' + R('★ Active','★ Active') + '</span></label>' +
+      '<input class="pname" type="text" value="' + esc(p.name) + '" placeholder="' + R('Nom de la période','Profile name') + '" data-key="name" oninput="updateProfile(this)">' +
+      '<button type="button" class="mini danger" onclick="removeProfile(' + i + ')">🗑️</button>' +
+      '</div>' +
+      '<div class="pfields">' +
+      '<label class="pcell"><span>💼 ' + R('Travail','Work') + '</span><input type="number" min="1" value="' + p.workMin + '" data-key="workMin" oninput="updateProfile(this)"></label>' +
+      '<label class="pcell"><span>☕ ' + R('Pause courte','Short break') + '</span><input type="number" min="1" value="' + p.shortBreakMin + '" data-key="shortBreakMin" oninput="updateProfile(this)"></label>' +
+      '<label class="pcell"><span>🛋️ ' + R('Pause longue','Long break') + '</span><input type="number" min="1" value="' + p.longBreakMin + '" data-key="longBreakMin" oninput="updateProfile(this)"></label>' +
+      '<label class="pcell"><span>🔁 ' + R('Cycles','Cycles') + '</span><input type="number" min="1" value="' + p.cycles + '" data-key="cycles" oninput="updateProfile(this)"></label>' +
+      '</div></div>';
+  }
+  html += '</div>';
+  el.innerHTML = html;
+}
+function updateProfile(el){
+  var row = el.closest('.profilrow');
+  var idx = Array.prototype.indexOf.call(document.querySelectorAll('.profilrow'), row);
+  if (idx < 0 || idx >= profiles.length) return;
+  var key = el.getAttribute('data-key');
+  if (key === 'name'){ profiles[idx].name = el.value; }
+  else { profiles[idx][key] = parseInt(el.value) || 1; }
+}
+function setActive(i){ activeIdx = i; renderProfiles(); }
+function addProfile(){
+  var base = R('Nouvelle période','New profile');
+  var name = base;
+  var n = 1;
+  while (profiles.some(function(p){ return p.name === name; })){ n++; name = base + ' ' + n; }
+  profiles.push({name: name, workMin: 25, shortBreakMin: 5, longBreakMin: 15, cycles: 4});
+  renderProfiles();
+}
+function removeProfile(i){
+  if (profiles.length <= 1){ alert(R('Au moins une période est requise.','At least one profile is required.')); return; }
+  profiles.splice(i, 1);
+  if (i === activeIdx){ activeIdx = 0; }
+  else if (i < activeIdx){ activeIdx--; }
+  renderProfiles();
+}
+function syncProfiles(){ document.getElementById('profiles_json').value = JSON.stringify(profiles); }
+renderProfiles();
 """
   b.add "</script>"
 
@@ -623,11 +702,47 @@ proc applySettings*(cfg: Config, form: Table[string, string]): Config =
   let lang = form.getOrDefault("lang")
   if lang in ["auto", "fr", "en"]:
     result.lang = lang
-  let prof = form.getOrDefault("activeProfile")
+
+  # --- Périodes (profils) modifiables ---
+  let profJson = form.getOrDefault("profiles_json")
+  if profJson.len > 0:
+    try:
+      let n = parseJson(profJson)
+      if n.kind == JArray:
+        var newProfiles: seq[Profile]
+        var seen: seq[string]
+        for p in n:
+          let name = p.getOrDefault("name").getStr().strip()
+          if name.len == 0 or name in seen:
+            continue        # noms vides ou doublons ignorés
+          seen.add name
+          newProfiles.add Profile(
+            name: name,
+            workMin: p.getOrDefault("workMin").getInt(25),
+            shortBreakMin: p.getOrDefault("shortBreakMin").getInt(5),
+            longBreakMin: p.getOrDefault("longBreakMin").getInt(15),
+            cycles: p.getOrDefault("cycles").getInt(4))
+        if newProfiles.len > 0:
+          result.profiles = newProfiles
+    except:
+      discard
+
+  # --- Profil actif (index envoyé par l'éditeur) ---
+  let activeIdxStr = form.getOrDefault("active_profile")
+  if activeIdxStr.len > 0:
+    let idx = parseIntSafe(activeIdxStr, -1)
+    if idx >= 0 and idx < result.profiles.len:
+      result.activeProfile = result.profiles[idx].name
+  # Sécurité : le profil actif doit exister, sinon premier profil.
+  var activeExists = false
   for p in result.profiles:
-    if p.name == prof:
-      result.activeProfile = prof
+    if p.name == result.activeProfile:
+      activeExists = true
       break
+  if not activeExists and result.profiles.len > 0:
+    result.activeProfile = result.profiles[0].name
+
+  # --- Rappels santé ---
   let remJson = form.getOrDefault("reminders_json")
   if remJson.len > 0:
     try:
@@ -644,9 +759,6 @@ proc applySettings*(cfg: Config, form: Table[string, string]): Config =
     except:
       discard
 
-# ---------------------------------------------------------------------------
-# Routage
-# ---------------------------------------------------------------------------
 
 proc handleRequest(req: HttpRequest): string {.gcsafe.} =
   case req.path
diff --git a/tests/test_webserver.nim b/tests/test_webserver.nim
index bda2b28..6982372 100644
--- a/tests/test_webserver.nim
+++ b/tests/test_webserver.nim
@@ -43,8 +43,11 @@ suite "applySettings":
   test "applies a full form":
     let base = defaultConfig()
     let form = parseForm("workMin=40&shortBreakMin=8&longBreakMin=20&" &
-      "cyclesBeforeLongBreak=5&dailyGoal=6&lang=en&activeProfile=Sprint&" &
-      "soundEnabled=on&doNotDisturb=on&" &
+      "cyclesBeforeLongBreak=5&dailyGoal=6&lang=en&" &
+      "active_profile=1&" &
+      "profiles_json=" & encodeUrl(
+        """[{"name":"Focus","workMin":30,"shortBreakMin":6,"longBreakMin":18,"cycles":4},{"name":"Rapide","workMin":10,"shortBreakMin":2,"longBreakMin":5,"cycles":3}]""") &
+      "&soundEnabled=on&doNotDisturb=on&" &
       "reminders_json=" & encodeUrl("""[{"text":"Boire de l'eau","enabled":true}]"""))
     let cfg = applySettings(base, form)
     check cfg.workMin == 40
@@ -53,16 +56,43 @@ suite "applySettings":
     check cfg.cyclesBeforeLongBreak == 5
     check cfg.dailyGoal == 6
     check cfg.lang == "en"
-    check cfg.activeProfile == "Sprint"
+    check cfg.profiles.len == 2
+    check cfg.profiles[0].name == "Focus"
+    check cfg.profiles[1].workMin == 10
+    check cfg.activeProfile == "Rapide"
     check cfg.soundEnabled
     check cfg.doNotDisturb
     check not cfg.autoStart
     check cfg.healthReminders.len == 1
     check cfg.healthReminders[0].text == "Boire de l'eau"
 
+  test "profiles are edited and active profile falls back safely":
+    let base = defaultConfig()
+    # Deux périodes, active = index 1.
+    let f1 = parseForm("profiles_json=" & encodeUrl(
+        """[{"name":"A","workMin":25,"shortBreakMin":5,"longBreakMin":15,"cycles":4},{"name":"B","workMin":50,"shortBreakMin":10,"longBreakMin":20,"cycles":5}]""") &
+      "&active_profile=1")
+    let c1 = applySettings(base, f1)
+    check c1.profiles.len == 2
+    check c1.activeProfile == "B"
+    # Index hors limites (période active supprimée) : repli sur la première.
+    let f2 = parseForm("profiles_json=" & encodeUrl(
+        """[{"name":"C","workMin":20,"shortBreakMin":4,"longBreakMin":10,"cycles":3}]""") &
+      "&active_profile=5")
+    let c2 = applySettings(base, f2)
+    check c2.profiles.len == 1
+    check c2.activeProfile == "C"
+    # Noms vides et doublons ignorés.
+    let f3 = parseForm("profiles_json=" & encodeUrl(
+        """[{"name":"","workMin":1,"shortBreakMin":1,"longBreakMin":1,"cycles":1},{"name":"D","workMin":33,"shortBreakMin":3,"longBreakMin":9,"cycles":2},{"name":"D","workMin":99,"shortBreakMin":9,"longBreakMin":27,"cycles":9}]"""))
+    let c3 = applySettings(base, f3)
+    check c3.profiles.len == 1
+    check c3.profiles[0].name == "D"
+    check c3.profiles[0].workMin == 33
+
   test "invalid values fall back to current ones":
     let base = defaultConfig()
-    let form = parseForm("workMin=abc&lang=zz&activeProfile=Inexistant")
+    let form = parseForm("workMin=abc&lang=zz&active_profile=99")
     let cfg = applySettings(base, form)
     check cfg.workMin == base.workMin
     check cfg.lang == "auto"
@@ -78,6 +108,8 @@ suite "rendering":
     check "Réglages" in renderSettings(cfg)
     check "name='workMin'" in renderSettings(cfg)
     check "reminders_json" in renderSettings(cfg)
+    check "profiles_json" in renderSettings(cfg)
+    check "active_profile" in renderSettings(cfg)
 
 suite "integration (local HTTP server)":
   test "GET routes work and settings POST persists":
@@ -109,8 +141,10 @@ suite "integration (local HTTP server)":
 
     # Sauvegarde via POST (comme le ferait le navigateur).
     let body = "workMin=33&shortBreakMin=6&longBreakMin=18&cyclesBeforeLongBreak=4&" &
-      "dailyGoal=5&lang=fr&activeProfile=Classique&" &
-      "reminders_json=" & encodeUrl(
+      "dailyGoal=5&lang=fr&active_profile=1&" &
+      "profiles_json=" & encodeUrl(
+        """[{"name":"Zen","workMin":35,"shortBreakMin":7,"longBreakMin":20,"cycles":4},{"name":"Bolt","workMin":5,"shortBreakMin":1,"longBreakMin":3,"cycles":2}]""") &
+      "&reminders_json=" & encodeUrl(
         """[{"text":"Étire-toi","enabled":true},{"text":"Bois de l'eau","enabled":false}]""")
     let resp = client.postContent(base & "/settings", body)
     check "Réglages enregistrés" in resp
@@ -120,6 +154,10 @@ suite "integration (local HTTP server)":
     check saved.workMin == 33
     check saved.dailyGoal == 5
     check saved.lang == "fr"
+    check saved.profiles.len == 2
+    check saved.profiles[0].name == "Zen"
+    check saved.profiles[1].workMin == 5
+    check saved.activeProfile == "Bolt"
     check saved.healthReminders.len == 2
     check saved.healthReminders[1].enabled == false