diff --git a/apps/gipy/app.js b/apps/gipy/app.js
index 83ce0757a..f59268c62 100644
--- a/apps/gipy/app.js
+++ b/apps/gipy/app.js
@@ -95,7 +95,7 @@ function compute_eta(hour, minutes, approximate_speed, remaining_distance) {
 }
 
 class TilesOffsets {
-  constructor(filename, offset) {
+  constructor(filename, offset, bytes_per_tile_index) {
     let header = E.toArrayBuffer(s.read(filename, offset, 4));
     let type_size = Uint8Array(header, 0, 1)[0];
     offset += 1;
@@ -105,9 +105,13 @@ class TilesOffsets {
     offset += 2;
 
     let bytes = (type_size==24)?3:2;
-    let buffer = E.toArrayBuffer(s.read(filename, offset, 2*non_empty_tiles_number+bytes*non_empty_tiles_number));
-    this.non_empty_tiles = Uint16Array(buffer, 0, non_empty_tiles_number);
-    offset += 2 * non_empty_tiles_number;
+    let buffer = E.toArrayBuffer(s.read(filename, offset, bytes_per_tile_index*non_empty_tiles_number+bytes*non_empty_tiles_number));
+    if (bytes_per_tile_index == 2) {
+      this.non_empty_tiles = Uint16Array(buffer, 0, non_empty_tiles_number);
+    } else {
+      this.non_empty_tiles = Uint24Array(buffer, 0, non_empty_tiles_number);
+    }
+    offset += bytes_per_tile_index * non_empty_tiles_number;
     if (type_size == 24) {
       this.non_empty_tiles_ends = Uint24Array(
         buffer,
@@ -179,7 +183,11 @@ class Map {
     offset += 8;
 
     // tiles offsets
-    let res = new TilesOffsets(filename, offset);
+    let bytes_per_tile_index = 2;
+    if (this.grid_size[0] * this.grid_size[1]) >= 65536 {
+      bytes_per_tile_index = 3;
+    }
+    let res = new TilesOffsets(filename, offset, bytes_per_tile_index);
     this.tiles_offsets = res[0];
     offset = res[1];
 
@@ -314,6 +322,10 @@ class Interests {
     this.side = side_array[0];
     offset += 8;
 
+    let bytes_per_tile_index = 2;
+    if (this.grid_size[0] * this.grid_size[1]) >= 65536 {
+      bytes_per_tile_index = 3;
+    }
     let res = new TilesOffsets(filename, offset);
     offset = res[1];
     this.offsets = res[0];
diff --git a/apps/gipy/pkg/gps.d.ts b/apps/gipy/pkg/gps.d.ts
index 9ad646068..ff6b5360a 100644
--- a/apps/gipy/pkg/gps.d.ts
+++ b/apps/gipy/pkg/gps.d.ts
@@ -80,11 +80,11 @@ export interface InitOutput {
   readonly __wbindgen_malloc: (a: number) => number;
   readonly __wbindgen_realloc: (a: number, b: number, c: number) => number;
   readonly __wbindgen_export_2: WebAssembly.Table;
-  readonly wasm_bindgen__convert__closures__invoke1_mut__hc18aa489d857d6a0: (a: number, b: number, c: number) => void;
+  readonly _dyn_core__ops__function__FnMut__A____Output___R_as_wasm_bindgen__closure__WasmClosure___describe__invoke__hc9126e38b2d002d3: (a: number, b: number, c: number) => void;
   readonly __wbindgen_add_to_stack_pointer: (a: number) => number;
   readonly __wbindgen_free: (a: number, b: number) => void;
   readonly __wbindgen_exn_store: (a: number) => void;
-  readonly wasm_bindgen__convert__closures__invoke2_mut__h41c3b5af183df3b2: (a: number, b: number, c: number, d: number) => void;
+  readonly wasm_bindgen__convert__closures__invoke2_mut__h56f743924f545497: (a: number, b: number, c: number, d: number) => void;
 }
 
 export type SyncInitInput = BufferSource | WebAssembly.Module;
diff --git a/apps/gipy/pkg/gps.js b/apps/gipy/pkg/gps.js
index 0f8b74804..7416d3409 100644
--- a/apps/gipy/pkg/gps.js
+++ b/apps/gipy/pkg/gps.js
@@ -98,6 +98,14 @@ function takeObject(idx) {
     return ret;
 }
 
+const cachedTextDecoder = new TextDecoder('utf-8', { ignoreBOM: true, fatal: true });
+
+cachedTextDecoder.decode();
+
+function getStringFromWasm0(ptr, len) {
+    return cachedTextDecoder.decode(getUint8Memory0().subarray(ptr, ptr + len));
+}
+
 function addHeapObject(obj) {
     if (heap_next === heap.length) heap.push(heap.length + 1);
     const idx = heap_next;
@@ -107,14 +115,6 @@ function addHeapObject(obj) {
     return idx;
 }
 
-const cachedTextDecoder = new TextDecoder('utf-8', { ignoreBOM: true, fatal: true });
-
-cachedTextDecoder.decode();
-
-function getStringFromWasm0(ptr, len) {
-    return cachedTextDecoder.decode(getUint8Memory0().subarray(ptr, ptr + len));
-}
-
 function debugString(val) {
     // primitive types
     const type = typeof val;
@@ -205,7 +205,7 @@ function makeMutClosure(arg0, arg1, dtor, f) {
     return real;
 }
 function __wbg_adapter_24(arg0, arg1, arg2) {
-    wasm.wasm_bindgen__convert__closures__invoke1_mut__hc18aa489d857d6a0(arg0, arg1, addHeapObject(arg2));
+    wasm._dyn_core__ops__function__FnMut__A____Output___R_as_wasm_bindgen__closure__WasmClosure___describe__invoke__hc9126e38b2d002d3(arg0, arg1, addHeapObject(arg2));
 }
 
 function _assertClass(instance, klass) {
@@ -389,7 +389,7 @@ function handleError(f, args) {
     }
 }
 function __wbg_adapter_86(arg0, arg1, arg2, arg3) {
-    wasm.wasm_bindgen__convert__closures__invoke2_mut__h41c3b5af183df3b2(arg0, arg1, addHeapObject(arg2), addHeapObject(arg3));
+    wasm.wasm_bindgen__convert__closures__invoke2_mut__h56f743924f545497(arg0, arg1, addHeapObject(arg2), addHeapObject(arg3));
 }
 
 /**
@@ -464,10 +464,6 @@ function getImports() {
     imports.wbg.__wbindgen_object_drop_ref = function(arg0) {
         takeObject(arg0);
     };
-    imports.wbg.__wbindgen_object_clone_ref = function(arg0) {
-        const ret = getObject(arg0);
-        return addHeapObject(ret);
-    };
     imports.wbg.__wbindgen_string_new = function(arg0, arg1) {
         const ret = getStringFromWasm0(arg0, arg1);
         return addHeapObject(ret);
@@ -476,6 +472,10 @@ function getImports() {
         const ret = fetch(getObject(arg0));
         return addHeapObject(ret);
     };
+    imports.wbg.__wbindgen_object_clone_ref = function(arg0) {
+        const ret = getObject(arg0);
+        return addHeapObject(ret);
+    };
     imports.wbg.__wbg_signal_31753ac644b25fbb = function(arg0) {
         const ret = getObject(arg0).signal;
         return addHeapObject(ret);
@@ -665,10 +665,6 @@ function getImports() {
         const ret = new Uint8Array(getObject(arg0));
         return addHeapObject(ret);
     };
-    imports.wbg.__wbg_stringify_d6471d300ded9b68 = function() { return handleError(function (arg0) {
-        const ret = JSON.stringify(getObject(arg0));
-        return addHeapObject(ret);
-    }, arguments) };
     imports.wbg.__wbg_get_765201544a2b6869 = function() { return handleError(function (arg0, arg1) {
         const ret = Reflect.get(getObject(arg0), getObject(arg1));
         return addHeapObject(ret);
@@ -681,6 +677,10 @@ function getImports() {
         const ret = Reflect.set(getObject(arg0), getObject(arg1), getObject(arg2));
         return ret;
     }, arguments) };
+    imports.wbg.__wbg_stringify_d6471d300ded9b68 = function() { return handleError(function (arg0) {
+        const ret = JSON.stringify(getObject(arg0));
+        return addHeapObject(ret);
+    }, arguments) };
     imports.wbg.__wbindgen_debug_string = function(arg0, arg1) {
         const ret = debugString(getObject(arg1));
         const ptr0 = passStringToWasm0(ret, wasm.__wbindgen_malloc, wasm.__wbindgen_realloc);
@@ -695,8 +695,8 @@ function getImports() {
         const ret = wasm.memory;
         return addHeapObject(ret);
     };
-    imports.wbg.__wbindgen_closure_wrapper2356 = function(arg0, arg1, arg2) {
-        const ret = makeMutClosure(arg0, arg1, 293, __wbg_adapter_24);
+    imports.wbg.__wbindgen_closure_wrapper2340 = function(arg0, arg1, arg2) {
+        const ret = makeMutClosure(arg0, arg1, 300, __wbg_adapter_24);
         return addHeapObject(ret);
     };
 
diff --git a/apps/gipy/pkg/gps_bg.wasm b/apps/gipy/pkg/gps_bg.wasm
index c9e212a13..9a0c28162 100644
Binary files a/apps/gipy/pkg/gps_bg.wasm and b/apps/gipy/pkg/gps_bg.wasm differ
diff --git a/apps/gipy/pkg/gps_bg.wasm.d.ts b/apps/gipy/pkg/gps_bg.wasm.d.ts
index 251d9c3b1..df018acbe 100644
--- a/apps/gipy/pkg/gps_bg.wasm.d.ts
+++ b/apps/gipy/pkg/gps_bg.wasm.d.ts
@@ -14,8 +14,8 @@ export function gps_from_area(a: number, b: number, c: number, d: number, e: num
 export function __wbindgen_malloc(a: number): number;
 export function __wbindgen_realloc(a: number, b: number, c: number): number;
 export const __wbindgen_export_2: WebAssembly.Table;
-export function wasm_bindgen__convert__closures__invoke1_mut__hc18aa489d857d6a0(a: number, b: number, c: number): void;
+export function _dyn_core__ops__function__FnMut__A____Output___R_as_wasm_bindgen__closure__WasmClosure___describe__invoke__hc9126e38b2d002d3(a: number, b: number, c: number): void;
 export function __wbindgen_add_to_stack_pointer(a: number): number;
 export function __wbindgen_free(a: number, b: number): void;
 export function __wbindgen_exn_store(a: number): void;
-export function wasm_bindgen__convert__closures__invoke2_mut__h41c3b5af183df3b2(a: number, b: number, c: number, d: number): void;
+export function wasm_bindgen__convert__closures__invoke2_mut__h56f743924f545497(a: number, b: number, c: number, d: number): void;