Regarding string compression.

[neeraj3728]

Hello,
I am using ESP32-wroom-32 & have written code to scan BLE and store it in a string by appending it. but I have found that after storing around 150 MAC addresses to post it on HTTP when I check ESP.getFreeHeap() it is almost exhausted. could you please suggest me any option to compress stored data?

Thanks in advance.

Thanks and regards,
Neeraj

[ESP_Sprite]

Sounds like you're doing something wrong... 150 MAC addresses total something like 2.7K, which is normally something that easily fits in ESP32 memory. Can you post the code you're using?