Developer tools

Format, encode, and inspect data the way developers actually do.

6 tools

JSON Formatter & Validator

Beautify, minify, and validate JSON instantly in your browser. 100% client-side, zero server upload.

Cryptographic Hash Generator & File Checksum Suite

Calculate SHA-256, SHA-512, SHA-384, SHA-1, MD5, and HMAC signatures for text and local files in your browser. 100% private Web Crypto execution.

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JWT Decoder & Security Inspector

Decode JSON Web Tokens (JWT) Header, Payload, and expiration status in your browser. 100% client-side memory parsing, zero telemetry, RFC 7519 compliant.

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API

Cron Expression Generator & Parser

Build, parse, and validate cron schedule expressions with human-readable natural language translation, visual field picker, and upcoming execution timeline.

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API

Regex Tester & Visualizer

Test, debug, and visualize regular expressions in real time. Zero-knowledge client-side evaluation with capture groups and presets.

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cURL to Code Converter

Convert cURL command lines into JavaScript (Fetch, Axios), Python (Requests, HTTPX), Go, Rust, and PHP. Zero server logging.

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Client-Side Sandbox

Engineered for Real-World Development Workflows

All developer utilities run completely isolated inside your browser sandbox. Parse, validate, and inspect deeply nested structures without sending proprietary payloads to remote endpoints.

Zero Remote Data Transmission

API keys, tokens, and configuration files stay in browser RAM and are never dispatched across the network.

RFC-Compliant Parsers

Strict adherence to RFC 8259 for JSON and RFC 7519 for JWT token inspection and structure verification.

High-Volume Memory Handling

Optimized AST parsers process multi-megabyte payloads smoothly with zero remote latency.

Enterprise Security Compliance

Because data is processed purely in client memory, software teams can safely inspect internal staging configs and debug error dumps without breaching GDPR, HIPAA, or corporate data sovereignty policies.

Other categories

Encoders & decoders

Move data between encodings — Base64, URL, percent — without leaving the browser.

2 tools

Generators

Spin up passwords, UUIDs, and other identifiers with cryptographic randomness.

2 tools

Image tools

Create and tweak images for web, print, and mobile.

4 tools

Text tools

Manipulate text — case, count, placeholder, transform.

4 tools

Converters

Convert between units, formats, and markup — length, mass, temperature, Markdown, and more.

3 tools

Looking for something else?

Browse every free X114 tool, or wire the same logic into your code via the API.

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