Free · No sign-up · Nothing to install

CrabDevOps: engineering tools for APIs, data and DevOps, built with precision.

Debug JWTs, convert JSON, YAML, TOML and CSV, generate hashes and UUIDs, translate cron expressions and test APIs. Fast, precise and processed in your browser.

API & networking

Debug tokens, test endpoints and inspect traffic.

4 tools

01 API

JWT debugger

Decode claims, check expiry and verify HMAC signatures.

100% in your browser

02 API

HTTP client

Postman-style: tabs, collection, environments, auth and cURL import.

100% in your browser

03 API

JSON mock generator

Realistic test data from a simple schema.

100% in your browser

04 API

Headers inspector

Analyze your request's headers and User-Agent.

100% in your browser

Data & formatting

Convert, format and type your data without losing precision.

2 tools

01 Data

Data converter

JSON ⇄ YAML ⇄ TOML ⇄ CSV and TypeScript interfaces, live.

100% in your browser

02 Data

Formatter & minifier

Readable or compact SQL, JSON, HTML and CSS in one click.

100% in your browser

Security & crypto

Hashes, identifiers and encoding built on secure primitives.

3 tools

01 Security

Hash generator

MD5, SHA-1, SHA-256, SHA-512 and bcrypt.

100% in your browser

02 Security

UUID, NanoID & .env keys

Bulk identifiers and secure secrets.

100% in your browser

03 Security

Base64 & URL

Encode and decode text with full UTF-8 support.

100% in your browser

Cloud & DevOps

Validate configs and understand your infrastructure.

3 tools

01 DevOps

Docker Compose validator

Catch common mistakes and conflicting ports.

100% in your browser

02 DevOps

Cron to plain English

Explain cron expressions and preview the next runs.

100% in your browser

03 DevOps

SVG optimizer

Strip metadata and shrink your vectors.

100% in your browser

Custom development

Need a system, an app, AI agents, automations or a custom solution for your business?

We build it. Tell us what you need and Crabsoft makes it happen.