diff --git a/frontend/src/app/maps/all-events/all-events.ts b/frontend/src/app/maps/all-events/all-events.ts
index 441e0dd..acc04ed 100644
--- a/frontend/src/app/maps/all-events/all-events.ts
+++ b/frontend/src/app/maps/all-events/all-events.ts
@@ -13,8 +13,10 @@ export class AllEvents implements OnInit, OnDestroy {
   @Input() features: Array<any> = [];
   @Input() selected: any | null = null;
   @Input() highlight: { id: string | number, type: 'saved' | 'deleted' } | null = null;
+  @Input() selectMode: 'none' | 'rectangle' | 'polygon' = 'none';
   @Output() select = new EventEmitter<any>();
   @Output() pickCoords = new EventEmitter<[number, number]>();
+  @Output() selection = new EventEmitter<Array<string | number>>();
 
   @ViewChild('mapContainer', { static: true }) mapContainer!: ElementRef<HTMLDivElement>;
 
@@ -26,6 +28,12 @@ export class AllEvents implements OnInit, OnDestroy {
   private isInitialLoad = true;
   private mapInitialized = false;
 
+  // selection state
+  private selectionActive = false;
+  private rectStartPoint: { x: number, y: number } | null = null;
+  private rectOverlay: HTMLDivElement | null = null;
+  private polygonPoints: Array<[number, number]> = [];
+
   constructor(
     private route: ActivatedRoute,
     private router: Router
@@ -66,6 +74,10 @@ export class AllEvents implements OnInit, OnDestroy {
         }, 1500);
       }
     }
+    // handle selectMode changes
+    if (this.mapInitialized) {
+      this.setupSelectionHandlers();
+    }
   }
 
   private ensureMapLibre(): Promise<void> {
@@ -119,6 +131,156 @@ export class AllEvents implements OnInit, OnDestroy {
     });
 
     this.mapInitialized = true;
+    this.setupSelectionHandlers();
+  }
+
+  private setupSelectionHandlers() {
+    const maplibregl = (window as any).maplibregl;
+    if (!this.map) return;
+    // Cleanup previous handlers
+    this.selectionActive = false;
+    this.removeRectOverlay();
+    this.polygonPoints = [];
+
+    // Disable default dragging while selecting
+    const enableDrag = () => this.map.dragPan && this.map.dragPan.enable && this.map.dragPan.enable();
+    const disableDrag = () => this.map.dragPan && this.map.dragPan.disable && this.map.dragPan.disable();
+
+    // Remove prior listeners by re-adding map handlers only when needed
+    this.map.off('mousedown', this as any);
+    this.map.off('mousemove', this as any);
+    this.map.off('mouseup', this as any);
+    this.map.off('click', this as any);
+
+    if (this.selectMode === 'rectangle') {
+      disableDrag();
+      this.selectionActive = true;
+      this.map.on('mousedown', (e: any) => {
+        if (!this.selectionActive) return;
+        const p = this.map.project(e.lngLat);
+        this.rectStartPoint = { x: p.x, y: p.y };
+        this.createRectOverlay();
+
+        const onMouseMove = (ev: any) => {
+          if (!this.rectStartPoint) return;
+          const pt = this.map.project(ev.lngLat);
+          this.updateRectOverlay(this.rectStartPoint, { x: pt.x, y: pt.y });
+        };
+        const onMouseUp = (ev: any) => {
+          this.map.off('mousemove', onMouseMove);
+          this.map.off('mouseup', onMouseUp);
+          enableDrag();
+          if (!this.rectStartPoint) { this.removeRectOverlay(); return; }
+          const endPt = this.map.project(ev.lngLat);
+          const a = this.map.unproject(this.rectStartPoint);
+          const b = this.map.unproject(endPt);
+          const minLng = Math.min(a.lng, b.lng);
+          const maxLng = Math.max(a.lng, b.lng);
+          const minLat = Math.min(a.lat, b.lat);
+          const maxLat = Math.max(a.lat, b.lat);
+          const ids = this.collectIdsInBbox([minLng, minLat, maxLng, maxLat]);
+          this.selection.emit(ids);
+          this.removeRectOverlay();
+          this.rectStartPoint = null;
+          this.selectionActive = false;
+        };
+        this.map.on('mousemove', onMouseMove);
+        this.map.on('mouseup', onMouseUp);
+      });
+    } else if (this.selectMode === 'polygon') {
+      disableDrag();
+      this.selectionActive = true;
+      this.polygonPoints = [];
+      const clickHandler = (e: any) => {
+        if (!this.selectionActive) return;
+        const pt: [number, number] = [e.lngLat.lng, e.lngLat.lat];
+        this.polygonPoints.push(pt);
+        // finish on double click (two close clicks)
+      };
+      const dblHandler = () => {
+        if (!this.selectionActive || this.polygonPoints.length < 3) return;
+        const ids = this.collectIdsInPolygon(this.polygonPoints);
+        this.selection.emit(ids);
+        this.selectionActive = false;
+        this.polygonPoints = [];
+        enableDrag();
+      };
+      this.map.on('click', clickHandler);
+      this.map.on('dblclick', dblHandler);
+    } else {
+      // none
+      enableDrag();
+      this.selectionActive = false;
+      this.removeRectOverlay();
+      this.polygonPoints = [];
+    }
+  }
+
+  private createRectOverlay() {
+    if (this.rectOverlay) this.removeRectOverlay();
+    const el = document.createElement('div');
+    el.style.position = 'absolute';
+    el.style.border = '2px dashed #1976d2';
+    el.style.background = 'rgba(25,118,210,0.1)';
+    el.style.pointerEvents = 'none';
+    this.rectOverlay = el;
+    this.mapContainer.nativeElement.appendChild(el);
+  }
+
+  private updateRectOverlay(a: { x: number, y: number }, b: { x: number, y: number }) {
+    if (!this.rectOverlay) return;
+    const left = Math.min(a.x, b.x);
+    const top = Math.min(a.y, b.y);
+    const width = Math.abs(a.x - b.x);
+    const height = Math.abs(a.y - b.y);
+    this.rectOverlay.style.left = `${left}px`;
+    this.rectOverlay.style.top = `${top}px`;
+    this.rectOverlay.style.width = `${width}px`;
+    this.rectOverlay.style.height = `${height}px`;
+  }
+
+  private removeRectOverlay() {
+    if (this.rectOverlay && this.rectOverlay.parentElement) {
+      this.rectOverlay.parentElement.removeChild(this.rectOverlay);
+    }
+    this.rectOverlay = null;
+  }
+
+  private collectIdsInBbox(bbox: [number, number, number, number]): Array<string | number> {
+    const [minLng, minLat, maxLng, maxLat] = bbox;
+    const ids: Array<string | number> = [];
+    for (const f of this.features) {
+      const id = (f?.properties?.id ?? f?.id);
+      const c = f?.geometry?.coordinates;
+      if (!id || !Array.isArray(c)) continue;
+      const [lng, lat] = c as [number, number];
+      if (lng >= minLng && lng <= maxLng && lat >= minLat && lat <= maxLat) ids.push(id);
+    }
+    return ids;
+  }
+
+  private collectIdsInPolygon(poly: Array<[number, number]>): Array<string | number> {
+    const ids: Array<string | number> = [];
+    const inside = (pt: [number, number], polygon: Array<[number, number]>) => {
+      // ray casting
+      let x = pt[0], y = pt[1];
+      let inside = false;
+      for (let i = 0, j = polygon.length - 1; i < polygon.length; j = i++) {
+        const xi = polygon[i][0], yi = polygon[i][1];
+        const xj = polygon[j][0], yj = polygon[j][1];
+        const intersect = ((yi > y) !== (yj > y)) && (x < (xj - xi) * (y - yi) / ((yj - yi) || 1e-9) + xi);
+        if (intersect) inside = !inside;
+      }
+      return inside;
+    };
+    for (const f of this.features) {
+      const id = (f?.properties?.id ?? f?.id);
+      const c = f?.geometry?.coordinates;
+      if (!id || !Array.isArray(c)) continue;
+      const pt: [number, number] = [c[0], c[1]];
+      if (inside(pt, poly)) ids.push(id);
+    }
+    return ids;
   }
 
   private getEmojiForWhat(what: string): string {
diff --git a/frontend/src/app/pages/home/home.html b/frontend/src/app/pages/home/home.html
index 4852df3..23ddfb0 100644
--- a/frontend/src/app/pages/home/home.html
+++ b/frontend/src/app/pages/home/home.html
@@ -86,6 +86,13 @@
         <button class="button" (click)="downloadGeoJSON()" title="Télécharger GeoJSON">📥 GeoJSON</button>
         <button class="button" (click)="downloadCSV()" title="Télécharger CSV">📥 CSV</button>
       </div>
+      <div class="selectors">
+        <button class="button" [class.active]="selectionMode==='rectangle'" (click)="startRectSelection()" title="Sélection rectangulaire">▭</button>
+        <button class="button" [class.active]="selectionMode==='polygon'" (click)="startPolySelection()" title="Sélection polygone">⬠</button>
+        @if (selectedIds.length) {
+          <span class="muted">{{selectedIds.length}} sélectionné(s)</span>
+        }
+      </div>
     </div>
 
   
@@ -150,7 +157,7 @@ lastupdate:
     }
     @if (!showTable) {
       <div class="map">
-        <app-all-events [features]="filteredFeatures" [selected]="selected" (select)="onSelect($event)" (pickCoords)="onPickCoords($event)"></app-all-events>
+        <app-all-events [features]="filteredFeatures" [selected]="selected" [selectMode]="selectionMode" (selection)="onSelection($event)" (select)="onSelect($event)" (pickCoords)="onPickCoords($event)"></app-all-events>
       </div>
     } @else {
       <div class="table-wrapper" style="overflow:auto;height:100%;">
@@ -178,3 +185,28 @@ lastupdate:
     }
   </div>
 </div>
+
+@if (selectedIds.length) {
+  <div class="batch-panel">
+    <div class="panel">
+      <div class="row">
+        <label>Action de masse</label>
+        <select class="input" [(ngModel)]="batchAction">
+          <option value="none">Choisir...</option>
+          <option value="changeWhat">Changer le type d'évènement (what)</option>
+          <option value="delete">Supprimer</option>
+        </select>
+      </div>
+      @if (batchAction==='changeWhat') {
+        <div class="row">
+          <label>Nouveau "what"</label>
+          <input class="input" type="text" [(ngModel)]="batchWhat" placeholder="ex: traffic.roadwork" />
+        </div>
+      }
+      <div class="actions">
+        <button class="btn" (click)="applyBatch()" [disabled]="batchAction==='none'">Appliquer</button>
+        <button class="btn btn-ghost" (click)="clearSelection()">Annuler</button>
+      </div>
+    </div>
+  </div>
+}
diff --git a/frontend/src/app/pages/home/home.scss b/frontend/src/app/pages/home/home.scss
index bca2646..70ec1cb 100644
--- a/frontend/src/app/pages/home/home.scss
+++ b/frontend/src/app/pages/home/home.scss
@@ -131,6 +131,7 @@ app-edit-form{
   top: 135px;
   margin-left: 397px;
   width: 40vw;
+  max-width: 350px;
   max-height: 77.7vh;
   display: block;
   overflow: auto;
diff --git a/frontend/src/app/pages/home/home.ts b/frontend/src/app/pages/home/home.ts
index 9e41792..9696609 100644
--- a/frontend/src/app/pages/home/home.ts
+++ b/frontend/src/app/pages/home/home.ts
@@ -40,7 +40,11 @@ export class Home implements OnInit, OnDestroy {
   showTable = false;
   showFilters = false;
   showEditForm = true;
-
+  selectionMode: 'none' | 'rectangle' | 'polygon' = 'none';
+  selectedIds: Array<string | number> = [];
+  batchAction: 'none' | 'changeWhat' | 'delete' = 'none';
+  batchWhat = '';
+  
   // Nouvelles propriétés pour le rechargement automatique et la sélection de jours
   autoReloadEnabled = true;
   autoReloadInterval: any = null;
@@ -81,7 +85,7 @@ export class Home implements OnInit, OnDestroy {
     const params = {
       start: today.toISOString().split('T')[0],
       end: endDate.toISOString().split('T')[0],
-      limit: 1000
+      limit: 3000
     };
 
     this.OedbApi.getEvents(params).subscribe((events: any) => {
@@ -226,6 +230,52 @@ export class Home implements OnInit, OnDestroy {
     this.loadEvents();
   }
 
+  // Selection from map
+  onSelection(ids: Array<string | number>) {
+    this.selectedIds = ids;
+  }
+
+  startRectSelection() {
+    this.selectionMode = this.selectionMode === 'rectangle' ? 'none' : 'rectangle';
+  }
+  startPolySelection() {
+    this.selectionMode = this.selectionMode === 'polygon' ? 'none' : 'polygon';
+  }
+  clearSelection() {
+    this.selectionMode = 'none';
+    this.selectedIds = [];
+    this.batchAction = 'none';
+    this.batchWhat = '';
+  }
+
+  async applyBatch() {
+    if (!this.selectedIds.length || this.batchAction === 'none') return;
+    if (this.batchAction === 'delete') {
+      for (const id of this.selectedIds) {
+        await new Promise<void>((resolve) => {
+          this.OedbApi.deleteEvent(id).subscribe({ next: () => resolve(), error: () => resolve() });
+        });
+      }
+      this.loadEvents();
+      this.clearSelection();
+      return;
+    }
+    if (this.batchAction === 'changeWhat') {
+      const what = this.batchWhat.trim();
+      if (!what) return;
+      for (const id of this.selectedIds) {
+        const feature = this.features.find(f => (f?.properties?.id ?? f?.id) === id);
+        if (!feature) continue;
+        const updated = { ...feature, properties: { ...feature.properties, what } };
+        await new Promise<void>((resolve) => {
+          this.OedbApi.updateEvent(id, updated).subscribe({ next: () => resolve(), error: () => resolve() });
+        });
+      }
+      this.loadEvents();
+      this.clearSelection();
+    }
+  }
+
   onCanceled() {
     this.showEditForm = false;
   }