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Essential utilities for developers. Format and validate JSON, convert between CSV and JSON, encode and decode Base64 and URLs, decode JWTs, test regular expressions, validate cron scheduling, and generate secure passwords.
Generate regex patterns for validation, extraction, and replacement scenarios.
Generate JSON Schema draft 2020-12 with validation constraints for API and data pipelines.
Validation, formatting and syntax highlighting for JSON.
Encode and decode text to/from Base64 format with UTF-8 support.
Encode and decode URL components or form values with UTF-8-safe browser processing.
Decode JWT header and payload locally, inspect exp/iat/nbf claims, and debug bearer tokens without uploading them.
Convert CSV exports into clean JSON locally, inspect headers and rows, and copy or download API-ready output without uploads.
Convert JSON arrays into clean CSV locally, flatten nested objects when needed, and copy or download spreadsheet-ready exports without uploads.
Convert Unix timestamps and ISO 8601 values locally, switch between seconds and milliseconds, and inspect UTC vs local time without uploads.
Test regular expressions with live match highlighting and capture groups.
Validate cron expressions, see next run times, and field breakdown.
Convert HEX/RGB/HSL/CMYK, color harmonies, palette, and WCAG contrast.
Merge, split, extract pages, and compress PDF files with queued server processing.
Cryptographically secure password generator.