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Decode JWT (JSON Web Token) payload, check expiration time, and validate token structure. Free JWT inspector tool.

Calculate days until SSL/TLS certificate expires and renewal reminder dates. Free certificate expiration calculator.

Estimate Docker image size from base image, layer count, dependencies, and build artifacts. Free container size calculator.

Calculate CAC payback, LTV/CAC ratio, magic number, and burn multiple for SaaS businesses. Free unit economics tool.

Compare API pricing tiers across providers (OpenAI, Anthropic, AWS, Stripe) for your monthly request volume. Free.