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jayden@mdt.id.au +61 431 149 567 LinkedIn GitHub Google Business ProfileCanberra, ACT, Australia7:00 am – 7:00 pm (Mon–Sun)

© 2026 MDT Software Development · Jayden MarquardtPrivacy

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Tools
JWT Decoder & Verifier

JWT Decoder & Verifier

Decode a JSON Web Token, read its claims in plain English, and check an HMAC signature.

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More dev utilities

CSV to JSON
Convert CSV spreadsheets to JSON and JSON back to CSV, for moving data between apps, APIs and spreadsheets.
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UUID Generator
Generate unique UUIDs for database records, session tokens, and more.
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JSON Validator & Formatter
Validate JSON, format it for reading or minify it for production, instantly in your browser.
Open tool

Let’s build something amazing.

Have a project idea or need expert guidance? One message, one engineer, no account manager.

jayden@mdt.id.au
·
+61 431 149 567
·
7:00 am – 7:00 pm (Mon–Sun)

Token

Decoding happens entirely in your browser. Nothing is uploaded.

Paste a JSON Web Token to pull it apart.