diff --git a/packages/taler-wallet-webextension/src/background.ts b/packages/taler-wallet-webextension/src/background.ts
index dbc540df4..dcbf96139 100644
--- a/packages/taler-wallet-webextension/src/background.ts
+++ b/packages/taler-wallet-webextension/src/background.ts
@@ -1,17 +1,17 @@
 /*
- This file is part of TALER
- (C) 2016 GNUnet e.V.
+ This file is part of GNU Taler
+ (C) 2021 Taler Systems S.A.
 
- TALER is free software; you can redistribute it and/or modify it under the
+ GNU Taler is free software; you can redistribute it and/or modify it under the
  terms of the GNU General Public License as published by the Free Software
  Foundation; either version 3, or (at your option) any later version.
 
- TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
 
  You should have received a copy of the GNU General Public License along with
- TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
  */
 
 /**
diff --git a/packages/taler-wallet-webextension/src/components/CheckboxOutlined.tsx b/packages/taler-wallet-webextension/src/components/CheckboxOutlined.tsx
index e596797cc..5e30ee3d1 100644
--- a/packages/taler-wallet-webextension/src/components/CheckboxOutlined.tsx
+++ b/packages/taler-wallet-webextension/src/components/CheckboxOutlined.tsx
@@ -16,6 +16,7 @@
 
 import { JSX } from "preact/jsx-runtime";
 import { Outlined, StyledCheckboxLabel } from "./styled/index";
+import { h } from 'preact';
 
 interface Props {
   enabled: boolean;
diff --git a/packages/taler-wallet-webextension/src/components/Diagnostics.tsx b/packages/taler-wallet-webextension/src/components/Diagnostics.tsx
index c98710149..b48deb847 100644
--- a/packages/taler-wallet-webextension/src/components/Diagnostics.tsx
+++ b/packages/taler-wallet-webextension/src/components/Diagnostics.tsx
@@ -1,3 +1,19 @@
+/*
+ This file is part of GNU Taler
+ (C) 2021 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
 import { WalletDiagnostics } from "@gnu-taler/taler-util";
 import { h } from "preact";
 import { JSX } from "preact/jsx-runtime";
diff --git a/packages/taler-wallet-webextension/src/components/ErrorMessage.tsx b/packages/taler-wallet-webextension/src/components/ErrorMessage.tsx
index 4aef66d36..b0e339c70 100644
--- a/packages/taler-wallet-webextension/src/components/ErrorMessage.tsx
+++ b/packages/taler-wallet-webextension/src/components/ErrorMessage.tsx
@@ -1,4 +1,19 @@
-import { VNode, h } from "preact";
+/*
+ This file is part of GNU Taler
+ (C) 2019 Taler Systems SA
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+ import { VNode, h } from "preact";
 import { useState } from "preact/hooks";
 import arrowDown from '../../static/img/chevron-down.svg';
 import { ErrorBox } from "./styled";
diff --git a/packages/taler-wallet-webextension/src/components/ExchangeToS.tsx b/packages/taler-wallet-webextension/src/components/ExchangeToS.tsx
index 7e029d474..0325daa04 100644
--- a/packages/taler-wallet-webextension/src/components/ExchangeToS.tsx
+++ b/packages/taler-wallet-webextension/src/components/ExchangeToS.tsx
@@ -1,6 +1,22 @@
-import { Fragment, VNode } from "preact"
+/*
+ This file is part of GNU Taler
+ (C) 2019 Taler Systems SA
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+ import { Fragment, VNode } from "preact"
 import { useState } from "preact/hooks"
 import { JSXInternal } from "preact/src/jsx"
+import { h } from 'preact';
 
 export function ExchangeXmlTos({ doc }: { doc: Document }) {
   const termsNode = doc.querySelector('[ids=terms-of-service]')
diff --git a/packages/taler-wallet-webextension/src/components/LogoHeader.tsx b/packages/taler-wallet-webextension/src/components/LogoHeader.tsx
index b45dcb353..9b75c62a1 100644
--- a/packages/taler-wallet-webextension/src/components/LogoHeader.tsx
+++ b/packages/taler-wallet-webextension/src/components/LogoHeader.tsx
@@ -1,3 +1,19 @@
+/*
+ This file is part of GNU Taler
+ (C) 2021 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
 import { h } from "preact";
 
 export function LogoHeader() {
diff --git a/packages/taler-wallet-webextension/src/components/Part.tsx b/packages/taler-wallet-webextension/src/components/Part.tsx
index 87b16de87..75c9df16f 100644
--- a/packages/taler-wallet-webextension/src/components/Part.tsx
+++ b/packages/taler-wallet-webextension/src/components/Part.tsx
@@ -1,5 +1,21 @@
+/*
+ This file is part of GNU Taler
+ (C) 2019 Taler Systems SA
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
 import { AmountLike } from "@gnu-taler/taler-util";
 import { ExtraLargeText, LargeText, SmallLightText } from "./styled";
+import { h } from 'preact';
 
 export type Kind = 'positive' | 'negative' | 'neutral';
 interface Props {
diff --git a/packages/taler-wallet-webextension/src/components/TransactionItem.tsx b/packages/taler-wallet-webextension/src/components/TransactionItem.tsx
index 8ddfd0e32..2d6d8e6da 100644
--- a/packages/taler-wallet-webextension/src/components/TransactionItem.tsx
+++ b/packages/taler-wallet-webextension/src/components/TransactionItem.tsx
@@ -1,3 +1,19 @@
+/*
+ This file is part of GNU Taler
+ (C) 2021 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
 import { AmountString, Timestamp, Transaction, TransactionType } from '@gnu-taler/taler-util';
 import { format, formatDistance } from 'date-fns';
 import { h } from 'preact';
diff --git a/packages/taler-wallet-webextension/src/components/styled/index.tsx b/packages/taler-wallet-webextension/src/components/styled/index.tsx
index f4b8c088a..f7945569e 100644
--- a/packages/taler-wallet-webextension/src/components/styled/index.tsx
+++ b/packages/taler-wallet-webextension/src/components/styled/index.tsx
@@ -1,3 +1,19 @@
+/*
+ This file is part of GNU Taler
+ (C) 2021 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
 
 // need to import linaria types, otherwise compiler will complain
 import type * as Linaria from '@linaria/core';
diff --git a/packages/taler-wallet-webextension/src/cta/Withdraw.tsx b/packages/taler-wallet-webextension/src/cta/Withdraw.tsx
index 6263285fd..c0347000d 100644
--- a/packages/taler-wallet-webextension/src/cta/Withdraw.tsx
+++ b/packages/taler-wallet-webextension/src/cta/Withdraw.tsx
@@ -32,7 +32,7 @@ import { ButtonDestructive, ButtonSuccess, ButtonWarning, LinkSuccess, TermsOfSe
 import {
   acceptWithdrawal, getExchangeWithdrawalInfo, getWithdrawalDetailsForUri, onUpdateNotification
 } from "../wxApi";
-
+import { h } from 'preact';
 
 interface Props {
   talerWithdrawUri?: string;
diff --git a/packages/taler-wallet-webextension/src/hooks/useBackupDeviceName.ts b/packages/taler-wallet-webextension/src/hooks/useBackupDeviceName.ts
index e322c6727..f3b1b3b5f 100644
--- a/packages/taler-wallet-webextension/src/hooks/useBackupDeviceName.ts
+++ b/packages/taler-wallet-webextension/src/hooks/useBackupDeviceName.ts
@@ -1,3 +1,19 @@
+/*
+ This file is part of GNU Taler
+ (C) 2021 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
 import { useEffect, useState } from "preact/hooks";
 import * as wxApi from "../wxApi";
 
diff --git a/packages/taler-wallet-webextension/src/hooks/useBackupStatus.ts b/packages/taler-wallet-webextension/src/hooks/useBackupStatus.ts
index 2d51cb303..c46ab6a5f 100644
--- a/packages/taler-wallet-webextension/src/hooks/useBackupStatus.ts
+++ b/packages/taler-wallet-webextension/src/hooks/useBackupStatus.ts
@@ -1,3 +1,19 @@
+/*
+ This file is part of GNU Taler
+ (C) 2021 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
 import { ProviderInfo, ProviderPaymentPaid, ProviderPaymentStatus, ProviderPaymentType } from "@gnu-taler/taler-wallet-core";
 import { useEffect, useState } from "preact/hooks";
 import * as wxApi from "../wxApi";
diff --git a/packages/taler-wallet-webextension/src/hooks/useDiagnostics.ts b/packages/taler-wallet-webextension/src/hooks/useDiagnostics.ts
index e2c62f998..888d4d5f1 100644
--- a/packages/taler-wallet-webextension/src/hooks/useDiagnostics.ts
+++ b/packages/taler-wallet-webextension/src/hooks/useDiagnostics.ts
@@ -1,3 +1,19 @@
+/*
+ This file is part of GNU Taler
+ (C) 2021 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
 import { WalletDiagnostics } from "@gnu-taler/taler-util";
 import { useEffect, useState } from "preact/hooks";
 import * as wxApi from "../wxApi";
diff --git a/packages/taler-wallet-webextension/src/hooks/useExtendedPermissions.ts b/packages/taler-wallet-webextension/src/hooks/useExtendedPermissions.ts
index 809863dc5..a92425760 100644
--- a/packages/taler-wallet-webextension/src/hooks/useExtendedPermissions.ts
+++ b/packages/taler-wallet-webextension/src/hooks/useExtendedPermissions.ts
@@ -1,3 +1,19 @@
+/*
+ This file is part of GNU Taler
+ (C) 2021 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
 import { useState, useEffect } from "preact/hooks";
 import * as wxApi from "../wxApi";
 import { getPermissionsApi } from "../compat";
diff --git a/packages/taler-wallet-webextension/src/hooks/useLang.ts b/packages/taler-wallet-webextension/src/hooks/useLang.ts
index d9ad7cd55..70b9614f6 100644
--- a/packages/taler-wallet-webextension/src/hooks/useLang.ts
+++ b/packages/taler-wallet-webextension/src/hooks/useLang.ts
@@ -1,3 +1,19 @@
+/*
+ This file is part of GNU Taler
+ (C) 2021 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
 import { useNotNullLocalStorage } from './useLocalStorage';
 
 export function useLang(initial?: string): [string, (s:string) => void] {
diff --git a/packages/taler-wallet-webextension/src/hooks/useProviderStatus.ts b/packages/taler-wallet-webextension/src/hooks/useProviderStatus.ts
index 124278828..6520848a5 100644
--- a/packages/taler-wallet-webextension/src/hooks/useProviderStatus.ts
+++ b/packages/taler-wallet-webextension/src/hooks/useProviderStatus.ts
@@ -1,3 +1,19 @@
+/*
+ This file is part of GNU Taler
+ (C) 2021 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
 import { ProviderInfo } from "@gnu-taler/taler-wallet-core";
 import { useEffect, useState } from "preact/hooks";
 import * as wxApi from "../wxApi";
diff --git a/packages/taler-wallet-webextension/src/hooks/useTalerActionURL.ts b/packages/taler-wallet-webextension/src/hooks/useTalerActionURL.ts
index 1c8504a8e..3178374f8 100644
--- a/packages/taler-wallet-webextension/src/hooks/useTalerActionURL.ts
+++ b/packages/taler-wallet-webextension/src/hooks/useTalerActionURL.ts
@@ -1,3 +1,19 @@
+/*
+ This file is part of GNU Taler
+ (C) 2021 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
 import { classifyTalerUri, TalerUriType } from "@gnu-taler/taler-util";
 import { useEffect, useState } from "preact/hooks";
 
diff --git a/packages/taler-wallet-webextension/src/popup/ProviderAddPage.tsx b/packages/taler-wallet-webextension/src/popup/ProviderAddPage.tsx
index ffefaedb5..6b6e8f5c2 100644
--- a/packages/taler-wallet-webextension/src/popup/ProviderAddPage.tsx
+++ b/packages/taler-wallet-webextension/src/popup/ProviderAddPage.tsx
@@ -1,3 +1,19 @@
+/*
+ This file is part of GNU Taler
+ (C) 2021 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
 import { Amounts, BackupBackupProviderTerms, canonicalizeBaseUrl, i18n } from "@gnu-taler/taler-util";
 import { verify } from "@gnu-taler/taler-wallet-core/src/crypto/primitives/nacl-fast";
 import { VNode, h } from "preact";
diff --git a/packages/taler-wallet-webextension/src/test-utils.ts b/packages/taler-wallet-webextension/src/test-utils.ts
index 7ef47b314..6bf1be3ff 100644
--- a/packages/taler-wallet-webextension/src/test-utils.ts
+++ b/packages/taler-wallet-webextension/src/test-utils.ts
@@ -1,3 +1,19 @@
+/*
+ This file is part of GNU Taler
+ (C) 2021 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
 import { ComponentChildren, FunctionalComponent, h as render } from 'preact';
 
 export function createExample<Props>(Component: FunctionalComponent<Props>, props: Partial<Props>) {
diff --git a/packages/taler-wallet-webextension/src/wallet/ProviderAddPage.tsx b/packages/taler-wallet-webextension/src/wallet/ProviderAddPage.tsx
index aa87c91e5..14384f23f 100644
--- a/packages/taler-wallet-webextension/src/wallet/ProviderAddPage.tsx
+++ b/packages/taler-wallet-webextension/src/wallet/ProviderAddPage.tsx
@@ -1,3 +1,19 @@
+/*
+ This file is part of GNU Taler
+ (C) 2021 Taler Systems S.A.
+
+ GNU Taler is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 3, or (at your option) any later version.
+
+ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License along with
+ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+ */
+
 import { Amounts, BackupBackupProviderTerms, canonicalizeBaseUrl, i18n } from "@gnu-taler/taler-util";
 import { verify } from "@gnu-taler/taler-wallet-core/src/crypto/primitives/nacl-fast";
 import { VNode, h } from "preact";