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Context One feature of my web application is copying file from A to B on user's machine, not in the OPFS. The destination (B) is a mounted NFS, so the write speed is the Internet upload speed. File ...
Triet Doan's user avatar
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1 vote
1 answer
465 views

This issue occurs in the latest version of Electron, but not in Chromium outside of Electron. The following example code uses the Filesystem API's showDirectoryPicker method to open a directory-picker ...
twhitney's user avatar
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2 votes
0 answers
262 views

I am trying to select a file using showOpenFilePicker and once a file is selected, I want to get the directory(FileSystemDirectoryHandle) of where the selected file is located. I want to get the ...
CraZyDroiD's user avatar
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1 answer
145 views

I created a test html/js program (using VS-Code and Go Live) that simply increments some state variables that I could Save, Save As, and Open/Load to experiment with The File System Access API. When I ...
BBruns's user avatar
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146 views

I'm facing a weird error with the File System API. I'm trying to download a PDF generated from a batch of images when the use clicks a button. Here is my current code: mainContainer.addEventListener('...
Edoardo Balducci's user avatar
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59 views

I am developing a chrome extension, and I want to allow my users to add their own assets to an assets folder. However I can't figure out how to access the files if I don't know their exact name. In ...
Ufodynasty's user avatar
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4 votes
2 answers
1k views

Property 'createSyncAccessHandle' does not exist on type 'FileSystemFileHandle'.ts(2339) const root = await navigator.storage.getDirectory(); const File1 = await root.getFileHandle('file.txt', { ...
rambo's user avatar
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-1 votes
1 answer
56 views

I have an application where I want to save files of browser generated data to be saved on local disk. Sometimes i might want to edit this data before storing it, therefore i display it in a text-area ...
nhaggen's user avatar
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2 votes
0 answers
208 views

I am get directory from file system and read data. try { const directoryHandle = await showDirectoryPicker({ startIn: startIn.value, }); for await (const [name, fileHandle] of ...
Sergey's user avatar
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1 vote
0 answers
781 views

I've been experimenting with the file system access API recently to try to allow downloads of large directories from my site, where a page will start a write stream, start fetching the files, ...
roachie's user avatar
  • 31
1 vote
0 answers
316 views

I am trying to use filesystem api to create permanent files, write and read data from them. Although I succeeded creating the file and writing data to it, after calling flush() the file becomes empty (...
Dave's user avatar
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1 vote
0 answers
183 views

I am planning a project where I will need to be able to access files from the File and Directory Entries API through the browser through URLs with actual file paths (unlike blobs) and the ...
luek baja's user avatar
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1 answer
176 views

Problem: My Plotly Dash app (python) has a clientside callback (javascript) which prompts the user to select a folder, then saves a file in a subfolder within that folder. Chrome asks for permission ...
ColinChatfield's user avatar
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1 answer
518 views

I am developing a small web-application with a threejs Renderer where I want to be able to store some screenshots to my local filesystem at a specific location. Rendering the images and creating the ...
nhaggen's user avatar
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4 votes
1 answer
5k views

The use case here is not that important though but the use actually is. I want to browse the users local file system via browser like we do via <input type="file"> but instead of ...
Atul Bhatt's user avatar
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3 votes
1 answer
2k views

In a web application I am working on I would like to be able to download files, modify them localy and reupload them to the server. To make it as easy as possible for the users, I would like them to ...
Robert P's user avatar
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3 votes
2 answers
4k views

I am struggling to understand if this is a bug or a feature of the new File System API. When using showDirectoryPicker and selecting the standard Windows documents directory, or the downloads ...
Taz Evans's user avatar
  • 67
4 votes
2 answers
669 views

const dirHandle = await window.showDirectoryPicker(); await dirHandle.requestPermission({ mode: "readwrite" }); I'm using the File System Access API in chrome. I'd like to let the user pick ...
ZYinMD's user avatar
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0 votes
1 answer
59 views

I am a newb in Java programing, and confused about IO API. For System API, read/write a entire block works faster than a random bytes. Can Java implements this feature? Or how to optimize performance ...
leonbear's user avatar
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4 votes
1 answer
2k views

Is there a way to set a defined directory path programmatically instead of showing the file explorer with .showDirectoryPicker() for the user to select the actual path?
gby's user avatar
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1 answer
483 views

I am creating a script for Chrome browser to handle files (using File System Access API). This is totally fine on Windows, but on MAC I have this issue: The files are stored in folders which look like ...
koubin's user avatar
  • 637
2 votes
1 answer
1k views

I am using the FileSystemAPI window.showDirectoryPicker() to open a directory which is returning a handle to that directory & by using that I can traverse all the files present in that directory. ...
Pradeepta Kumar Khatoi's user avatar
  • 191
1 vote
1 answer
225 views

I am using below code which uses FileSystemAPI with webworker const worker = new Worker( "worker.js" ); btn.onclick = async (evt) => { const dirHandle = await showDirectoryPicker(); ...
Pradeepta Kumar Khatoi's user avatar
  • 191
1 vote
1 answer
367 views

I am using the new(ish) File System Access API and I need to delete a file. I was going to use the remove() method, but it is deprecated. Is there a currently supported function for deleting files in ...
Kodzvn's user avatar
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1 answer
402 views

When performing this sequence Obtain a handle to a new file via window.showSaveFilePicker, say filename.ext Obtain a writeable file stream from the handle Write some content into the file using the ...
rjb's user avatar
  • 123
5 votes
1 answer
6k views

I am wanting to provide a spinner in my web app as I download a file from the server and then save it using the File System Access API. I can do this using the showSaveFilePicker() but it seems very ...
Roaders's user avatar
  • 4,615
2 votes
1 answer
936 views

Is there a way to store the path to file which user wants to upload, but doesn't have an internet connection (it's a PWA) and reupload it when a connection is back? Or maybe not store the path, but ...
bobbylej's user avatar
  • 40
1 vote
1 answer
554 views

Considering that: Browser's File System API enables web apps to write on local files, without subsequent asks for permissions. WebAssembly can run a native SQLite3 client. It's possible to create a ...
Matheus Zabin's user avatar
  • 35
0 votes
1 answer
194 views

Can I change the format of the file by using Native File System API? For example, when I read the every .pdf files of the one directory and changed them to the .jpeg files?
knave123's user avatar
  • 51
1 vote
2 answers
991 views

I've found this https://developer.mozilla.org/en-US/docs/Web/API/File_System_Access_API to allow javascript to access the local file system. I feel really dumb, but I can't find anywhere that talks ...
nardstorm's user avatar
  • 11
0 votes
1 answer
460 views

Hello I want to get check whether the website has showDirectoryPicker function with the puppeteer. Currently my code looks like this: 'use strict'; const puppeteer = require('puppeteer'); (async ...
knave123's user avatar
  • 51
2 votes
1 answer
559 views

As illustrated in here here, Puppeteer allows to override Javascript functions. I want to override showOpenFilePicker function. That is, when the showOpenFilePicker invoked by the web page. I want to ...
knave123's user avatar
  • 51
0 votes
1 answer
211 views

How can I intercept API calls made by the web application? For example, how can I know the web site uses native file system api and intercept its function when user invokes the above function? await ...
knave123's user avatar
  • 51
2 votes
1 answer
277 views

I'm trying to hook into a function that comes with the File System Access API. For example when the web site used the File System Access API as shown in below. // store a reference to our file handle ...
knave123's user avatar
  • 51
3 votes
1 answer
2k views

As we all know browsers do NOT support repopulating file path to <input/> file across page reload, due to security reasons. But recently chrome 86 has released File System Access API, that ...
deathangel908's user avatar
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0 votes
1 answer
698 views

I am trying to read the text file (log.txt) which has already been created in my local machine and want to append text to the same file from webworker using the filesystem api methods but unable to ...
vijesh's user avatar
  • 1
2 votes
1 answer
2k views

I'm trying to use the FileSystem API to write an uploaded file on a SPA to a Local sandboxed FileSystem using the FileSystem API. The File Is uploaded with drop acion and I can get the File object ...
alexroat's user avatar
  • 1,727
0 votes
1 answer
443 views

I'm working with the newest version of Edge (Canary release 86.0.615.0) and I can get the new Native File System API showOpenFilePicker to let me access files but I can't find a reference to the ...
George Smyly's user avatar
  • 5
4 votes
1 answer
2k views

I have my own custom system that needs to create txt files in order to print cash receipts when there is a new order. I need those files to be saved locally to the computer to a specific location, but ...
Dimitar's user avatar
  • 1,928
1 vote
2 answers
2k views

I am trying to read the content of the XML file. Probably this is basic JS stuff, but I seem can't make it work. I am using Chrome's experimental Native File System API to read folders in folder: ...
koubin's user avatar
  • 637
3 votes
1 answer
2k views

Note: There are already some questions on how to open Folder on User device using Javascript. however, these questions were asked, before the Native File System API. How to open Window File Explorer ...
Adarsh Madrecha's user avatar
  • 8,205
0 votes
1 answer
937 views

We are creating an offline player to minimize buffering with the FileSystem API. I am able to open a directory and fetch videos from there but I am still unable to fetch the path. I am looking to get ...
Fahad Sohail's user avatar
  • 1,886
2 votes
1 answer
436 views

disclaimer, self-answered post to hopefully save others time. Setup: I've been using chrome's implementation of the file systems API, [1] [2] [3]. This requires enabling the flag chrome://flags/#...
junvar's user avatar
  • 11.6k