[Issue]: Error creating a folder on SPIFFS

[gidano]

Issue type

Bug

Summary

You can only upload files to the SPIFFS root directory. You cannot upload them to a folder, such as \web\index.html.

Operating system

None

ESPConnect Session log (required)

SPIFFS my directory structure, e.g.,
data
├── audio_icons/
├── conf/
├── fonts/
│   ├── test_20.vlw
│   ├── test_24.vlw
│   ├── test_28.vlw
│   ├── test_sb_20.vlw
│   ├── test_sb_24.vlw
│   └── test_sb_28.vlw
├── web/
│   ├── index.html
│   ├── search.html
│   ├── style.css
│   └── theme.css
├── stations.txt
└── wifi.txt

Checklist

• I searched for existing issues.
• I can reproduce this on the latest release.

[thelastoutpostworkshop]

SPIFFS does not support real directories. It uses a flat namespace, so paths like /web/index.html are not treated as files inside a web folder. If we want true folder support, we would need a different filesystem like littlefs. https://docs.espressif.com/projects/esp-idf/en/stable/esp32/api-reference/storage/spiffs.html

[gidano]

Here’s a photo to prove just how wrong that is! This is my current SPIFFS filesystem in your program:
https://i.postimg.cc/MKSZykBM/2026-03-20-114445.jpg

[thelastoutpostworkshop]

Thanks for the screenshot. This behavior is expected with SPIFFS: it does not support real directories, only a flat namespace. So names like web/index.html and fonts/test_24.vlw can exist, but they are stored as flat filenames, not as files inside real folders.
I should make the SPIFFS UI clearer and avoid exposing folder-creation behavior there. For true directory support, LittleFS/FATFS is the better choice.

[gidano]

I’m not an expert, so the technical details mean nothing to me. I just want to use what you’ve created for this purpose, if possible. My web radio’s interface also does this by uploading to a directory, but unfortunately, it only allows uploading one file at a time. The Arduino IDE 1.8.19 interface also has an option to upload the .\data folder to SPIFFS using ESP Sketch Data Upload, but I’m using version 2.3.8, which doesn’t have that feature. That’s why I’d like to use ESPConnect for this as well. I assume you’ll make the modification?! :)