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WiFiManager/README.md
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# WiFiManager
WiFiManager gives ESP8266 and ESP32 firmware a polished, self-hosted Wi-Fi setup experience. It reconnects to saved networks and opens a temporary captive portal when it cannot, so users can configure the device from any phone or browser without a cloud service or companion app.
## See it on real hardware
| Brand the built-in portal | Combine Wi-Fi and application setup |
| --- | --- |
| ![Branded WiFiManager portal overview on an ESP32.](docs/assets/portal-esp32-branded-overview.png) | ![WiFiManager network picker and custom MQTT broker field on an ESP8266.](docs/assets/portal-esp8266-custom-wifi.png) |
| Give each product its own title, identity, icon, and color theme without copying portal HTML. | Show live nearby networks and collect application values, such as an MQTT broker, in the same setup flow. |
These are unmodified browser captures of [Branded Portal](examples/BrandedPortal/) and [Custom Portal Content](examples/CustomPortalContent/) running on the supported boards. The portal is served by the device itself; no cloud UI or companion app is involved.
## Start with a working portal
```cpp
#include <Arduino.h>
#include <WiFiManager.h>
WiFiManager wifi;
void setup() {
Serial.begin(115200);
wifi.setConfigPortalTimeout(180);
wifi.autoConnect("Device Setup", "change-me");
}
void loop() {
wifi.process();
}
```
When saved Wi-Fi is unavailable, `autoConnect()` starts the portal asynchronously. Call `process()` from every `loop()` iteration while it may be open. Flash [Basic Portal](examples/BasicPortal/) to try this exact flow; its README gives the network name, password, portal address, and expected result after saving Wi-Fi.
## Make it yours
```cpp
const char kTitle[] PROGMEM = "Set up Temperature Monitor";
const char kBrand[] PROGMEM = "Example Devices";
const char kAccent[] PROGMEM = "#347a45";
const WiFiManagerPortalConfig kPortalUI = {
WiFiManagerPortalText::progmem(kTitle),
WiFiManagerPortalText::progmem(kBrand),
{}, {}, {},
{
{}, {}, {}, {}, {},
WiFiManagerPortalText::progmem(kAccent),
{}, {}, {}, {}, {},
10, 0,
},
};
void setup() {
wifi.setPortalConfig(kPortalUI); // before the portal starts
wifi.autoConnect("Device Setup");
}
void loop() {
wifi.process();
}
```
The [Branded Portal](examples/BrandedPortal/) example includes a static SVG, accessible identity text, and a small semantic theme. [Custom Portal Content](examples/CustomPortalContent/) shows the supported parameters, information sections, and home cards without replacing the portal shell.
## What it provides
- **Captive Wi-Fi setup:** starts an access point only when saved network credentials cannot connect.
- **Responsive portal:** one small portal for Wi-Fi, application fields, information, actions, and firmware update flow.
- **Structured APIs:** JSON endpoints under `/api/...` for applications that need portal state or connection results.
- **Product presentation:** title, logo, tagline, and semantic colour tokens without copying the portal HTML.
- **Primary and fallback networks:** an opt-in two-network controller backed by an application-provided store.
- **ESP8266 and ESP32 support:** the package resolves its asynchronous web dependencies for the selected target.
## Choose a guide
| Goal | Guide |
| --- | --- |
| Brand the portal or add structured built-in content | [Portal UI](docs/PORTAL_UI.md) |
| Configure primary/fallback station profiles | [Station profiles](docs/STATION_PROFILES.md) |
| Understand the JSON APIs and station-connect handoff | [Portal API](docs/PORTAL_API.md) |
| Build or flash a complete example | [Examples](examples/README.md) |
| Contribute to this fork or prepare a release | [Development](docs/DEVELOPMENT.md) |
## Install
```ini
[common]
lib_deps =
WiFiManager=https://github.com/alexhopeoconnor/WiFiManager.git#v3.2.0
```
The suffix after `#` is a Git ref. PlatformIO clones the repository and checks out that release tag; GitHub Release assets are unrelated. Arduino IDE users can install this repository as a library checkout.
See the [documentation index](docs/README.md), [examples](examples/README.md), [release history](CHANGELOG.md), and [licence](LICENSE).