Developer Tools
11 UtilitiesClient-side developer utilities for formatting JSON, decoding JWTs, generating UUIDs, regular expressions, and inspecting payloads. 100% offline-ready with zero telemetry.
Cron Expression Generator
Build and describe cron expressions.
CSV to JSON
Convert CSV data to JSON with shape mapping & table preview.
Hash Generator
Generate SHA-1/256/384/512 hashes of text.
JSON Formatter
Format, validate, and minify JSON with TypeScript & Zod export.
JSON to CSV
Convert JSON arrays & objects to CSV with deep flattening.
JWT Decoder
Decode a JWT's header and payload.
Regex Tester
Test regular expressions with live highlighting, group captures & replacement.
SQL Formatter
Format and beautify SQL queries.
UUID Generator
Generate random UUIDs (v4).
XML Formatter
Format and validate XML.
YAML Formatter
Format and validate YAML.
Modern developer workflows require handling sensitive API tokens, database connection strings, and proprietary data structures. Every tool in the Developer suite runs exclusively in your browser sandbox via WebAssembly and client-side JavaScript. No tokens, JSON documents, or secrets are ever transmitted to any remote server.
Zero Server Latency
Operations execute immediately on your CPU without waiting for network transfers or queue times.
Offline Capability
Install as a PWA or bookmark to process files and calculations even during network outages.
Permanent Privacy
No databases, no session recording, and no server logs tracking your data or intellectual property.