TonViewer

TonViewer (tonviewer.com) is one of the two dominant TON blockchain explorers. It’s run by the team behind TonAPI and emphasises clarity for ordinary users: clean balance views, easy-to-read transaction summaries, NFT galleries, jetton lists with prices.

What it shows

For an address:

• Total TON balance, denominated in TON and USD.
• Held jettons with logos, names, and current prices.
• NFT collection grid with thumbnails.
• Recent transactions in a one-line-per-tx list, with parsed icons (incoming/outgoing TON, jetton transfer, NFT transfer, DEX swap).
• Validator participation if the address belongs to a validator or pool.
• For wallet contracts — wallet version (v3R2/v4R2/W5), seqno, public key.

For transactions:

• A high-level summary (“Alice sent 100 USDT to Bob”) with USD valuations.
• Drill-down to the full message tree, parsed op-codes, fee breakdown.
• Links to participating contracts (jetton wallets, DEX router, NFT items).

For jettons / NFTs:

• Full holder distribution (top holders, total holders).
• Recent transfer activity.
• Verified status from the TON Foundation reference list.

Audience and feel

TonViewer leans toward end users — investors, NFT collectors, casual TON holders. The visual layer (icons, USD totals, friendly time stamps) is more polished than TonScan’s. The trade-off is less raw cell visibility: where TonScan shows you the cell tree of a transaction, TonViewer summarises it.

Verified jettons and NFTs

The TON Foundation maintains a public reference list of verified jettons and NFT collections — the official USDT, NOT, DOGS, large NFT collections — and TonViewer prominently marks them with a checkmark. Anything outside the list shows up as “unverified”, which is the explorer’s polite way of warning that the asset might be a copycat.

API and TonAPI

TonViewer is the explorer front-end of the same team that runs TonAPI (tonapi.io), one of the most-used backend APIs in the TON ecosystem. dApps that need parsed transaction data, jetton balances, NFT events, or live prices typically integrate TonAPI rather than building their own indexer.

The free tier is rate-limited; production apps subscribe to a paid tier or run their own infrastructure.

TonViewer vs TonScan

The two cover the same chain with different priorities:

• TonViewer — friendlier for non-developers. Better for “what does this address own and what happened recently?”.
• TonScan — friendlier for developers. Better for “show me the exact bytecode, the source, the cell tree”.

Both index the same data; minor differences in stats (active addresses, total transactions) come from differing filters around frozen accounts and dust.

Most TON users keep both bookmarks and pick whichever the task suits.

Practical tips

• Use the address QR code. TonViewer’s address pages have a one-tap QR icon — handy for moving an address from desktop to mobile.
• Watchlists. Logged-in users can save addresses; useful for tracking treasury wallets, validator pools, or your own portfolio.
• Transaction history export. CSV export works for tax reporting and accounting.

Independence

TonViewer is operated by an independent team, not by the TON Foundation. Its data is sourced from public TON nodes, so any user can in principle verify it against an alternative explorer or against a self-run lite-server.