Rust Developer Essentials
Rust developers prize correctness, performance, and zero-cost abstractions. Whether you are building a systems-level library, a WebAssembly module, or a high-throughput network service, you still face the same micro-tasks: formatting JSON, testing regex patterns, inspecting hex dumps, and comparing diffs. These free, browser-based tools handle those tasks instantly so you can keep your compile-test loop tight.
JSON Formatter & Validator
Paste raw JSON from a serde_json serialization or an API response to pretty-print and validate it. Catch structural errors before they become serde::de::Error panics in your deserializer.
RegExp Tester
Rust's regex crate guarantees linear-time matching. Test patterns against sample strings with live highlighting before compiling them with Regex::new(). Essential for log parsers, CLI filters, and input validators.
regex crate, testing capture groups for CLI argument parsing.Hex Converter
Convert byte arrays to hex strings and back — critical when debugging binary protocols, inspecting &[u8] slices, or verifying cryptographic digests in systems-level Rust code.
Base64 Encoder / Decoder
Decode JWT tokens, encode binary payloads for API transmissions, or verify base64 crate output. Saves writing a quick fn main() just to inspect an encoded string.
Code Diff Tool
Compare two versions of a Rust file, a Cargo.lock delta, or generated code output side by side. Faster than running cargo fmt and diffing in the terminal during code review.
MD5 / Hash Generator
Generate MD5, SHA-256, and SHA-512 hashes to verify file checksums, test digest crate output, or compare cryptographic signatures without compiling a test binary.
WebSocket Tester
Connect to WebSocket endpoints built with tokio-tungstenite or axum. Send and receive messages directly in the browser to validate handlers without writing a dedicated test client.
JSON to YAML Converter
Convert JSON configuration to YAML for Docker Compose files, CI pipelines, or Kubernetes manifests used alongside your Rust services. One click replaces manual reformatting.
URL Encoder / Decoder
Encode query parameters or decode percent-encoded URLs when debugging HTTP handlers built with hyper, reqwest, or axum. Prevents the classic double-encoding bug in redirect flows.
Timestamp Converter
Convert Unix epoch values to human-readable dates and back. Invaluable when reading structured logs from tracing, debugging chrono timestamps, or correlating distributed traces.
cURL Converter
Paste a cURL command and convert it to a reqwest-compatible HTTP request structure. Speeds up integration work when API documentation provides cURL examples.
Code to Image
Turn Rust snippets into clean, shareable images for blog posts, crate README files, or conference slides. Preserves syntax highlighting without screenshotting your editor.