diff --git a/lib/controllers.js b/lib/controllers.js
index b2a4a9d..1f5d273 100644
--- a/lib/controllers.js
+++ b/lib/controllers.js
@@ -9,6 +9,8 @@ const groups = require.main.require('./src/groups');
 const slugify = require.main.require('./src/slugify');
 const helpers = require.main.require('./src/controllers/helpers');
 const userController = require.main.require('./src/controllers/user');
+const path = require('path');
+const fs = require('fs/promises');
 
 const main = require('../library');
 
@@ -62,6 +64,35 @@ Controllers.getStrategy = async (req, res) => {
 	helpers.formatApiResponse(200, res, { strategy });
 };
 
+Controllers.renderIconsCss = async (req, res) => {
+	const strategies = await main.listStrategies(true);
+	const iconStrategies = strategies.filter(strategy => strategy.iconUrl);
+
+	const escapeCssUrl = (url) => url.replace(/\\/g, '\\\\').replace(/"/g, '\\"');
+
+	const baseStyles = `
+.sso-oauth2-icon {
+	display: inline-block;
+	width: 1em;
+	height: 1em;
+	background-position: center;
+	background-repeat: no-repeat;
+	background-size: contain;
+	vertical-align: middle;
+}
+.sso-oauth2-icon::before {
+	content: "" !important;
+}
+`.trim();
+
+	const iconRules = iconStrategies.map(strategy => (
+		`.sso-oauth2-icon-${strategy.name} { background-image: url("${escapeCssUrl(strategy.iconUrl)}"); }`
+	)).join('\n');
+
+	res.set('Content-Type', 'text/css; charset=utf-8');
+	res.send(`${baseStyles}\n${iconRules}\n`);
+};
+
 Controllers.editStrategy = async (req, res) => {
 	const name = slugify(req.params.name || req.body.name);
 	const payload = { ...req.body };
@@ -79,6 +110,99 @@ Controllers.editStrategy = async (req, res) => {
 		payload[prop] = payload.hasOwnProperty(prop) && payload[prop] === 'on' ? 1 : 0;
 	});
 
+	const baseDir = nconf.get('base_dir') || process.cwd();
+	const rawUploadPath = nconf.get('upload_path') || path.join(baseDir, 'public', 'uploads');
+	const uploadPath = path.isAbsolute(rawUploadPath) ? rawUploadPath : path.join(baseDir, rawUploadPath);
+	const uploadUrl = nconf.get('upload_url') || '/uploads';
+	const relativePath = nconf.get('relative_path') || '';
+	const iconsDir = path.join(uploadPath, 'plugins', 'sso-oauth2-multiple');
+
+	const normalizeUrlPrefix = (prefix) => {
+		if (!prefix.startsWith('/')) {
+			prefix = `/${prefix}`;
+		}
+		return prefix.replace(/\/+$/, '');
+	};
+	const normalizeRelativePath = (value) => {
+		if (!value) {
+			return '';
+		}
+		if (!value.startsWith('/')) {
+			value = `/${value}`;
+		}
+		return value.replace(/\/+$/, '');
+	};
+	const isAbsoluteUploadUrl = /^https?:\/\//i.test(uploadUrl);
+	const baseUploadUrl = isAbsoluteUploadUrl
+		? uploadUrl.replace(/\/+$/, '')
+		: `${normalizeRelativePath(relativePath)}${normalizeUrlPrefix(uploadUrl)}`;
+	const uploadUrlPrefix = `${baseUploadUrl}/plugins/sso-oauth2-multiple/`;
+	const getIconFilePath = (url) => {
+		if (!url || typeof url !== 'string') {
+			return null;
+		}
+		if (!url.startsWith(uploadUrlPrefix)) {
+			return null;
+		}
+		const filename = url.slice(uploadUrlPrefix.length);
+		if (!filename) {
+			return null;
+		}
+		return path.join(iconsDir, filename);
+	};
+
+	if (payload.removeIcon === 'on') {
+		payload.iconUrl = '';
+	}
+	delete payload.removeIcon;
+
+	const existing = await main.getStrategy(name);
+	const existingIconPath = existing ? getIconFilePath(existing.iconUrl) : null;
+
+	if (payload.iconUrl) {
+		const maxBytes = 100 * 1024;
+		const isDataUrl = payload.iconUrl.startsWith('data:image/');
+		if (isDataUrl) {
+			const match = payload.iconUrl.match(/^data:(image\/[a-zA-Z0-9.+-]+);base64,(.+)$/);
+			if (!match) {
+				throw new Error('[[error:invalid-data]]');
+			}
+			const mime = match[1];
+			const data = match[2];
+			const buffer = Buffer.from(data, 'base64');
+			if (buffer.length > maxBytes) {
+				throw new Error('[[error:invalid-data]]');
+			}
+
+			const extMap = {
+				'image/png': 'png',
+				'image/jpeg': 'jpg',
+				'image/jpg': 'jpg',
+				'image/gif': 'gif',
+				'image/webp': 'webp',
+				'image/svg+xml': 'svg',
+			};
+			const ext = extMap[mime];
+			if (!ext) {
+				throw new Error('[[error:invalid-data]]');
+			}
+
+			await fs.mkdir(iconsDir, { recursive: true });
+			const filename = `${name}-${Date.now()}.${ext}`;
+			const filePath = path.join(iconsDir, filename);
+			await fs.writeFile(filePath, buffer);
+			payload.iconUrl = `${uploadUrlPrefix}${filename}`;
+
+			if (existingIconPath) {
+				await fs.unlink(existingIconPath).catch(() => null);
+			}
+		} else if (!payload.iconUrl.startsWith(uploadUrlPrefix)) {
+			throw new Error('[[error:invalid-data]]');
+		}
+	} else if (!payload.iconUrl && existingIconPath) {
+		await fs.unlink(existingIconPath).catch(() => null);
+	}
+
 	await Promise.all([
 		db.sortedSetAdd('oauth2-multiple:strategies', Date.now(), name),
 		db.setObject(`oauth2-multiple:strategies:${name}`, payload),
diff --git a/library.js b/library.js
index 0161c03..0679fc2 100644
--- a/library.js
+++ b/library.js
@@ -19,6 +19,7 @@ OAuth.init = async (params) => {
 	const controllers = require('./lib/controllers');
 
 	routeHelpers.setupAdminPageRoute(router, '/admin/plugins/sso-oauth2-multiple', controllers.renderAdminPage);
+	router.get('/plugins/sso-oauth2-multiple/icons.css', controllers.renderIconsCss);
 };
 
 OAuth.addRoutes = async ({ router, middleware }) => {
@@ -120,22 +121,35 @@ OAuth.loadStrategies = async (strategies) => {
 		passport.use(configured[idx].name, strategy);
 	});
 
-	strategies.push(...configured.map(({ name, scope, loginLabel, registerLabel, faIcon }) => ({
+	strategies.push(...configured.map(({
 		name,
-		url: `/auth/${name}`,
-		callbackURL: `/auth/${name}/callback`,
-		icon: faIcon || 'fa-right-to-bracket',
-		icons: {
-			normal: `fa ${faIcon || 'fa-right-to-bracket'}`,
-			square: `fa ${faIcon || 'fa-right-to-bracket'}`,
-		},
-		labels: {
-			login: loginLabel || 'Log In',
-			register: registerLabel || 'Register',
-		},
-		color: '#666',
-		scope: scope || 'openid email profile',
-	})));
+		scope,
+		loginLabel,
+		registerLabel,
+		faIcon,
+		iconUrl,
+	}) => {
+		const hasCustomIcon = Boolean(iconUrl);
+		const fallbackIcon = faIcon || 'fa-right-to-bracket';
+		const iconClass = hasCustomIcon ? `sso-oauth2-icon sso-oauth2-icon-${name}` : `fa ${fallbackIcon}`;
+
+		return {
+			name,
+			url: `/auth/${name}`,
+			callbackURL: `/auth/${name}/callback`,
+			icon: hasCustomIcon ? `sso-oauth2-icon sso-oauth2-icon-${name}` : fallbackIcon,
+			icons: {
+				normal: iconClass,
+				square: iconClass,
+			},
+			labels: {
+				login: loginLabel || 'Log In',
+				register: registerLabel || 'Register',
+			},
+			color: '#666',
+			scope: scope || 'openid email profile',
+		};
+	}));
 
 	return strategies;
 };
diff --git a/plugin.json b/plugin.json
index 39b7360..56ad2e5 100644
--- a/plugin.json
+++ b/plugin.json
@@ -15,6 +15,9 @@
 	"modules": {
 		"../admin/plugins/sso-oauth2-multiple.js": "./static/lib/admin.js"
 	},
+	"scripts": [
+		"static/lib/client.js"
+	],
 	"acpScripts": [
 		"static/lib/acp.js"
 	],
diff --git a/static/lib/admin.js b/static/lib/admin.js
index 28de9fa..d9e51b5 100644
--- a/static/lib/admin.js
+++ b/static/lib/admin.js
@@ -23,7 +23,10 @@ export function init() {
 						message,
 						size: 'xl',
 						callback: handleEditStrategy,
-						onShown: handleAutoDiscovery,
+						onShown: function () {
+							handleAutoDiscovery.call(this);
+							handleIconUpload.call(this);
+						},
 					});
 
 					break;
@@ -39,7 +42,10 @@ export function init() {
 						message,
 						size: 'xl',
 						callback: handleEditStrategy,
-						onShown: handleAutoDiscovery,
+						onShown: function () {
+							handleAutoDiscovery.call(this);
+							handleIconUpload.call(this);
+						},
 					});
 
 					break;
@@ -205,6 +211,80 @@ function handleAutoDiscovery() {
 	});
 }
 
+function handleIconUpload() {
+	const modalEl = this;
+	const fileEl = modalEl.querySelector('#iconFile');
+	const iconUrlEl = modalEl.querySelector('input[name="iconUrl"]');
+	const previewEl = modalEl.querySelector('#iconPreview');
+	const removeEl = modalEl.querySelector('#removeIcon');
+
+	if (!fileEl || !iconUrlEl) {
+		return;
+	}
+
+	const updatePreview = (url) => {
+		if (!previewEl) {
+			return;
+		}
+		if (url) {
+			previewEl.src = url;
+			previewEl.classList.remove('d-none');
+		} else {
+			previewEl.removeAttribute('src');
+			previewEl.classList.add('d-none');
+		}
+	};
+
+	updatePreview(iconUrlEl.value);
+
+	fileEl.addEventListener('change', () => {
+		const file = fileEl.files && fileEl.files[0];
+		if (!file) {
+			return;
+		}
+
+		if (!file.type.startsWith('image/')) {
+			alert({
+				type: 'danger',
+				message: 'Icon upload must be an image file.',
+			});
+			fileEl.value = '';
+			return;
+		}
+
+		const maxBytes = 100 * 1024;
+		if (file.size > maxBytes) {
+			alert({
+				type: 'danger',
+				message: 'Icon upload must be 100KB or smaller.',
+			});
+			fileEl.value = '';
+			return;
+		}
+
+		const reader = new FileReader();
+		reader.onload = () => {
+			iconUrlEl.value = reader.result;
+			if (removeEl) {
+				removeEl.checked = false;
+			}
+			updatePreview(reader.result);
+		};
+		reader.readAsDataURL(file);
+	});
+
+	if (removeEl) {
+		removeEl.addEventListener('change', () => {
+			if (!removeEl.checked) {
+				return;
+			}
+			fileEl.value = '';
+			iconUrlEl.value = '';
+			updatePreview('');
+		});
+	}
+}
+
 function handleDeleteStrategy(ok, name) {
 	if (!ok) {
 		return;
diff --git a/static/lib/client.js b/static/lib/client.js
new file mode 100644
index 0000000..555ffd7
--- /dev/null
+++ b/static/lib/client.js
@@ -0,0 +1,20 @@
+'use strict';
+
+(() => {
+	if (typeof document === 'undefined') {
+		return;
+	}
+
+	const existing = document.querySelector('link[data-sso-oauth2-icons]');
+	if (existing) {
+		return;
+	}
+
+	const relativePath = (window.config && window.config.relative_path) ? window.config.relative_path : '';
+	const cacheBuster = (window.config && (window.config['cache-buster'] || window.config.cacheBuster)) || '';
+	const link = document.createElement('link');
+	link.rel = 'stylesheet';
+	link.href = `${relativePath}/plugins/sso-oauth2-multiple/icons.css${cacheBuster ? `?v=${cacheBuster}` : ''}`;
+	link.setAttribute('data-sso-oauth2-icons', '1');
+	document.head.appendChild(link);
+})();
diff --git a/static/templates/partials/edit-oauth2-strategy.tpl b/static/templates/partials/edit-oauth2-strategy.tpl
index dcc4f65..09a977e 100644
--- a/static/templates/partials/edit-oauth2-strategy.tpl
+++ b/static/templates/partials/edit-oauth2-strategy.tpl
@@ -36,6 +36,22 @@
 					If none is set, then <i class="fa fa-right-to-bracket"></i> will be used.
 				</p>
 			</div>
+			<div class="mb-3">
+				<label class="form-label" for="iconFile">Custom Icon Upload</label>
+				<input type="hidden" name="iconUrl" value="{./iconUrl}">
+				<input type="file" id="iconFile" class="form-control" accept="image/*">
+				<p class="form-text">
+					<strong>Optional</strong> — upload a small image (PNG, SVG, etc.) to use instead of the FontAwesome icon.
+					Max size 100KB.
+				</p>
+				<div class="d-flex align-items-center gap-2">
+					<img id="iconPreview" src="{./iconUrl}" alt="Custom icon preview" class="rounded d-none" style="width: 28px; height: 28px; object-fit: contain;">
+					<div class="form-check form-switch">
+						<input type="checkbox" class="form-check-input" id="removeIcon" name="removeIcon">
+						<label for="removeIcon" class="form-check-label">Remove custom icon</label>
+					</div>
+				</div>
+			</div>
 
 			<div class="mb-3">
 				<label class="form-label" for="loginLabel">&quot;Login&quot; Label Text</label>