WebTileLayer in MapView 2D not triggering any network requests (offline tiles via Node/Express)

Espada4 — Thu, 12 Feb 2026 10:46:20 GMT

Hi everyone,

I'm trying to render a WebTileLayer inside a MapView using ArcGIS API for JavaScript.

My goal is to use raster tiles completely offline.
The tiles are pre-generated (z/x/y structure) and served locally via a simple Node.js + Express static server.

Tile structure

My tiles are organized like this:

/tiles /0 /1 /2 ... /14 /x y.png

Example URL that works directly in the browser:

http://localhost:9000/tiles/4/8/5.png

Tiles are 256x256 PNG in Web Mercator (EPSG:3857).

WebTileLayer configuration

const webTileLayer = new WebTileLayer({ urlTemplate: "http://localhost:9000/tiles/{level}/{col}/{row}.png" });

Then I assign it as the basemap:

this.map.basemap = new Basemap({ baseLayers: [webTileLayer] });

The SceneView is using Web Mercator spatial reference (3857), and the LODs are standard Web Mercator LODs (0–23).

i give you the print of my currentLayer

{

"fullExtent": {

"spatialReference": {

"latestWkid": 3857,

"wkid": 102100

"xmin": -20037508.342787,

"ymin": -20037508.34278,

"xmax": 20037508.34278,

"ymax": 20037508.342787

"id": "19c512d415e-layer-1",

"listMode": "show",

"title": "Layer",

"visibility": true,

"layerType": "WebTiledLayer",

"minScale": 0,

"maxScale": 0,

"refreshInterval": 0,

"blendMode": "normal",

"copyright": "",

"tileInfo": {

"compressionQuality": 0,

"dpi": 96,

"format": "PNG8",

"origin": {

"spatialReference": {

"latestWkid": 3857,

"wkid": 102100

"x": -20037508.342787,

"y": 20037508.342787

"lods": [

{

"level": 0,

"resolution": 156543.033928,

"scale": 591657527.591555

{

"level": 1,

"resolution": 78271.5169639999,

"scale": 295828763.795777

{

"level": 2,

"resolution": 39135.7584820001,

"scale": 147914381.897889

{

"level": 3,

"resolution": 19567.8792409999,

"scale": 73957190.948944

{

"level": 4,

"resolution": 9783.93962049996,

"scale": 36978595.474472

{

"level": 5,

"resolution": 4891.96981024998,

"scale": 18489297.737236

{

"level": 6,

"resolution": 2445.98490512499,

"scale": 9244648.868618

{

"level": 7,

"resolution": 1222.99245256249,

"scale": 4622324.434309

{

"level": 8,

"resolution": 611.49622628138,

"scale": 2311162.217155

{

"level": 9,

"resolution": 305.748113140558,

"scale": 1155581.108577

{

"level": 10,

"resolution": 152.874056570411,

"scale": 577790.554289

{

"level": 11,

"resolution": 76.4370282850732,

"scale": 288895.277144

{

"level": 12,

"resolution": 38.2185141425366,

"scale": 144447.638572

{

"level": 13,

"resolution": 19.1092570712683,

"scale": 72223.819286

{

"level": 14,

"resolution": 9.55462853563415,

"scale": 36111.909643

{

"level": 15,

"resolution": 4.77731426794937,

"scale": 18055.954822

{

"level": 16,

"resolution": 2.38865713397468,

"scale": 9027.977411

{

"level": 17,

"resolution": 1.19432856685505,

"scale": 4513.988705

{

"level": 18,

"resolution": 0.597164283559817,

"scale": 2256.994353

{

"level": 19,

"resolution": 0.298582141647617,

"scale": 1128.497176

{

"level": 20,

"resolution": 0.14929107082380833,

"scale": 564.248588

{

"level": 21,

"resolution": 0.07464553541190416,

"scale": 282.124294

{

"level": 22,

"resolution": 0.03732276770595208,

"scale": 141.062147

{

"level": 23,

"resolution": 0.01866138385297604,

"scale": 70.5310735

}

"cols": 256,

"rows": 256,

"spatialReference": {

"latestWkid": 3857,

"wkid": 102100

}

"templateUrl": "http://localhost:9000/tiles/{level}/{col}/{row}.png"

}

The issue

The layer loads without errors
No console errors
The layer appears in the map layers
But no network requests are triggered
Nothing appears in the browser Network tab

It seems like the layer is not even attempting to fetch tiles.

Re: WebTileLayer in MapView 2D not triggering any network requests (offline tiles via Node/Express)

Espada4 — Thu, 12 Feb 2026 11:00:38 GMT

topic WebTileLayer in MapView 2D not triggering any network requests (offline tiles via Node/Express) in ArcGIS Online Questions

WebTileLayer in MapView 2D not triggering any network requests (offline tiles via Node/Express)

Re: WebTileLayer in MapView 2D not triggering any network requests (offline tiles via Node/Express)