Solana Tx Decoder

Decodes Solana transactions to expose instructions, accounts, and program IDs for developers, auditors, and security researchers analyzing on-chain activity.

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1,304+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

Worked Example & Common Values

Below is a sample worked calculation demonstrating how Solana Tx Decoder processes input data instantly inside your browser.

Sample Input Minified string: {"id":1,"status":"active","roles":["admin"]}

Computed Result

{
  "id": 1,
  "status": "active",
  "roles": [
    "admin"
  ]
}

Execution Mode Client-Side In-Browser JS

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About This Tool

This tool decodes Solana transaction blobs to expose the internal structure: signatures, message header, accounts, and instructions. It operates without blockchain interaction, offering a safe, deterministic view of a transaction's components. It supports common encodings (base64, hex) and can be extended to JSON-encoded transactions.

Conceptually, decoding follows the Solana wire protocol: parse the Message, map account indices to public keys, resolve program IDs, and interpret instruction data. Known programs (System, Token, Associated Token Account) can be given human-friendly names and basic decoding of their standard instruction formats. For unknown programs, the tool preserves raw data and indices.

Use cases include debugging on-chain behavior, auditing transfers, verifying transaction authenticity, and validating program interactions before deployment. The tool provides structured outputs suitable for pipelines and can be integrated into development workflows. Unique differentiators include program-id resolution, optional advanced decoding, and a format-agnostic input layer.

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How to Use

Provide inputs: paste the Solana transaction blob into the input field.
Choose the input format: base64, hex, or JSON.
Run decoding: execute the decoder to produce structured results.
Review outputs: examine signatures, accounts, programs, and instruction data.
Optional: export or copy the decoded JSON for tooling or audits.

Frequently Asked Questions

Find Quick Answers

What input formats are supported?

The decoder accepts Solana transaction blobs encoded as base64, hexadecimal, or JSON-encoded objects. It validates encoding, decodes the blob into the transaction structure, and reports any mismatches with specific error details to guide correction.

Can it decode custom or unknown programs?

Yes, the tool decodes known program IDs with user-friendly names and standard instruction layouts; for unknown programs it preserves program indices and raw data, and can optionally apply a registry-based decoding if available.

Does decoding require network access?

No network access is performed. All decoding is local, static, and deterministic based on the provided blob and program registry data included in the tool.

What outputs are produced?

The output includes signatures, a decoded message with account keys, recent blockhash, and a list of instructions. Each instruction shows program_id_index, accounts, and base64 data; when possible, program names and decoded data fields are provided.

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