diff --git a/content/onboarding/explorers/overview.mdx b/content/onboarding/explorers/overview.mdx
index b8c495165..616fb531b 100644
--- a/content/onboarding/explorers/overview.mdx
+++ b/content/onboarding/explorers/overview.mdx
@@ -28,6 +28,7 @@ Indexers continuously read blocks from nodes, parse messages and transactions, a
 | Tonscan.org  | General-purpose | [tonscan.org](https://tonscan.org/)                   | [Testnet](https://testnet.tonscan.org/)      | No       |
 | Tonscan.com  | General-purpose | [tonscan.com](https://tonscan.com/)                   | -                                            | No       |
 | TON Explorer | Low-level/core  | [explorer.toncoin.org](https://explorer.toncoin.org/) | [Testnet](https://test-explorer.toncoin.org) | Yes      |
+| Tonviewer    | General-purpose | [tonviewer.com](https://tonviewer.com/)               | [Testnet](https://testnet.tonviewer.com/)    | No       |
 
 > Official: maintained by the TON Foundation or an affiliated team
 
diff --git a/src/dictionaries/custom.txt b/src/dictionaries/custom.txt
index ef62f3a2a..8b187c664 100644
--- a/src/dictionaries/custom.txt
+++ b/src/dictionaries/custom.txt
@@ -777,6 +777,8 @@ tonscan.com
 tonscan.org
 Tonstakers
 tonstatus
+Tonviewer
+tonviewer
 tonutils
 toolchain
 toolset