# Disable auto delete of local storage **URL:** \ **Category:** web dev\ **Created:** [February 13, 2024, 6:37pm UTC](https://forum.kirupa.com/t/disable-auto-delete-of-local-storage/664927 "2024-02-13T18:37:29Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![Wayne](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/wayne/32/16501_2.png) [@Wayne](https://forum.kirupa.com/u/Wayne)\ **Post date:** [February 13, 2024, 6:37pm UTC](https://forum.kirupa.com/t/disable-auto-delete-of-local-storage/664927/1 "2024-02-13T18:37:29Z")
I like to create PWAs with local storage. I don’t want the browser to auto delete the local storage. Even indexedDB gets deleted after seven days of inactivity! I wished PWA got the same treatment as local apps on a mobile device! Any tips? ---
**Author:** ![kirupa](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/kirupa/32/11616_2.png) [@kirupa](https://forum.kirupa.com/u/kirupa)\ **Post date:** [February 14, 2024, 4:38am UTC](https://forum.kirupa.com/t/disable-auto-delete-of-local-storage/664927/2 "2024-02-14T04:38:17Z")
Hi Wayne! Store the data in the cloud AND local storage. If the local storage gets cleared, fetch the latest copy from the cloud. Would that work? Cheers, Kirupa :unibrow: ---
**Author:** ![steve.mills](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/steve.mills/32/14961_2.png) [@steve.mills](https://forum.kirupa.com/u/steve.mills)\ **Post date:** [February 14, 2024, 7:18am UTC](https://forum.kirupa.com/t/disable-auto-delete-of-local-storage/664927/3 "2024-02-14T07:18:28Z")
Hey mate, From what I can tell there is some form of persistence with this this API. > **[StorageManager: persist() method - Web APIs | MDN](https://developer.mozilla.org/en-US/docs/Web/API/StorageManager/persist)** > > The persist() method of the StorageManager interface requests permission to use persistent storage, and returns a Promise that resolves to true if permission is granted and bucket mode is persistent, and false otherwise. The browser may or may not... I’m not 100% on this because I use the file system for my personal apps and don’t really care about persisting data on web pages with SW’s. Here’s my little snippet for a basic File System API (works in chrome and edge). Have a play with that and get a feel for it… 🙂 ```auto export class FS { static #currentFolder static #currentFile static async openFolder() { try { FS.currentFolder = await window.showDirectoryPicker({ mode: "readwrite", startIn: "desktop" }) } catch (err) { return "cancelled" } } static async openFile(fileName) { if (FS.#currentFolder == null) await FS.openFolder() try { let fileHandle = await FS.#currentFolder.getFileHandle(fileName) let blob = await fileHandle.getFile() let text = await blob.text() return text } catch { return "not found" } } static async createFile(newName) { if (FS.#currentFolder == null) await FS.openFolder() try { for await (const [name, handle] of FS.#currentFolder.entries()) { if (name == newName) { return alert('file name in use') } } let newFile = await FS.#currentFolder.getFileHandle(newName, { create: true }); return newFile } catch { return "failed" } } static async saveFile(fileName, data) { let fileHandle; try { for await (const [name, handle] of FS.#currentFolder.entries()) { if (name == fileName) { fileHandle = handle; break } } if (!fileHandle) return let writableStream = await fileHandle.createWritable(); await writableStream.write(data); await writableStream.close(); } catch { "failed" } } static async deleteFile(fileName) { try { await FS.#currentFolder.removeEntry(fileName) } catch { "failed" } } } ``` ---
**Author:** ![Wayne](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/wayne/32/16501_2.png) [@Wayne](https://forum.kirupa.com/u/Wayne)\ **Post date:** [February 14, 2024, 8:58am UTC](https://forum.kirupa.com/t/disable-auto-delete-of-local-storage/664927/4 "2024-02-14T08:58:21Z")
I can’t store to the cloud because I want to avoid gdpr rules 😅 I can’t find what StorageManager is. Is it storing files on device? ---
**Author:** ![steve.mills](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/steve.mills/32/14961_2.png) [@steve.mills](https://forum.kirupa.com/u/steve.mills)\ **Post date:** [February 14, 2024, 11:53am UTC](https://forum.kirupa.com/t/disable-auto-delete-of-local-storage/664927/6 "2024-02-14T11:53:04Z")
From what I can tell `navigator.storage` returns a read only object called `StorageManager` This Object allows you to: - `estimate()` : “query” how much data your origin has been allowed on the device for `localStorage, caches, indexedDB sessionStorage` ect - `persist()` : request permission to persist data from your origin - persisted(): boolean if your origins data is persisted - `getDirectory()` : access the file system directory for various operations The code below should persist your data unless the user clears their history/ storage ect ```auto if (navigator.storage && navigator.storage.persist) { navigator.storage.persist().then((persistent) => { if (persistent) { console.log("Storage will not be cleared except by explicit user action"); } else { console.log("Storage may be cleared by the UA under storage pressure."); } }); } ``` TBH I haven’t tested it because I just use the file system… ---
**Author:** ![Wayne](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/wayne/32/16501_2.png) [@Wayne](https://forum.kirupa.com/u/Wayne)\ **Post date:** [February 14, 2024, 11:59am UTC](https://forum.kirupa.com/t/disable-auto-delete-of-local-storage/664927/7 "2024-02-14T11:59:05Z")
Thank you! I will give it a try ---
**Author:** ![Wayne](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/wayne/32/16501_2.png) [@Wayne](https://forum.kirupa.com/u/Wayne)\ **Post date:** [February 14, 2024, 2:08pm UTC](https://forum.kirupa.com/t/disable-auto-delete-of-local-storage/664927/9 "2024-02-14T14:08:30Z")
It’s very sad how pwa never take off as I wanted. I have to write a native app to be able to store simple data for offline or use the cloud which violates GDPR ---
**Author:** ![kirupa](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/kirupa/32/11616_2.png) [@kirupa](https://forum.kirupa.com/u/kirupa)\ **Post date:** [February 14, 2024, 5:33pm UTC](https://forum.kirupa.com/t/disable-auto-delete-of-local-storage/664927/10 "2024-02-14T17:33:00Z")
With Apple backtracking a bit with PWAs in the EU, the PWA shine continues to wear off. ---
**Author:** ![Wayne](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/wayne/32/16501_2.png) [@Wayne](https://forum.kirupa.com/u/Wayne)\ **Post date:** [February 14, 2024, 5:49pm UTC](https://forum.kirupa.com/t/disable-auto-delete-of-local-storage/664927/11 "2024-02-14T17:49:07Z")
Can you by any chance speed me up to join project idx? I’m on a waiting list 🙏 ---
**Author:** ![kirupa](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/kirupa/32/11616_2.png) [@kirupa](https://forum.kirupa.com/u/kirupa)\ **Post date:** [February 14, 2024, 8:47pm UTC](https://forum.kirupa.com/t/disable-auto-delete-of-local-storage/664927/12 "2024-02-14T20:47:43Z")
PM me the email address you used to sign-up and I’ll see what I can do. ---
**Author:** ![steve.mills](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/steve.mills/32/14961_2.png) [@steve.mills](https://forum.kirupa.com/u/steve.mills)\ **Post date:** [February 17, 2024, 9:17am UTC](https://forum.kirupa.com/t/disable-auto-delete-of-local-storage/664927/13 "2024-02-17T09:17:12Z")
There might be another option to use a PWA with IOS file sytem. This guy built a doodle app and published to APP store with a single html file using capacitor JS… [![](https://canada1.discourse-cdn.com/flex011/uploads/kirupa/original/3X/4/d/4d68faf74bff46423781acaa19b07a379ebd20eb.jpeg "I built an entire app with NO FRAMEWORKS for Web, iOS, and Android") ](https://www.youtube.com/watch?v=Y382mhVOoR8&t=61s) Capacitor also has a file system API… > **[Filesystem Capacitor Plugin API | Capacitor Documentation](https://capacitorjs.com/docs/apis/filesystem)** > > The Filesystem API provides a NodeJS-like API for working with files on the device. ---
**Author:** ![lukeharper](https://avatars.discourse-cdn.com/v4/letter/l/35a633/32.png) [@lukeharper](https://forum.kirupa.com/u/lukeharper)\ **Post date:** [October 23, 2024, 9:50am UTC](https://forum.kirupa.com/t/disable-auto-delete-of-local-storage/664927/14 "2024-10-23T09:50:01Z")
Hello wayne , PWAs can’t fully prevent browsers from deleting local storage or IndexedDB after inactivity. To improve persistence, use service workers, request user permission for persistent storage (`navigator.storage.persist()`), and regularly engage users to reset inactivity timers. However, PWAs still don’t get the same treatment as native apps.