Developer Tools | AnyTool.online

Developer Tools

Browser-local JSON, Base64, URL, JWT, UUID, hashing, regex and timestamp utilities.

Available tools

• JSON Formatter & Validator — Format, minify, validate, copy and download JSON directly in your browser.
• Base64 Encoder / Decoder — Free browser-local Base64 encoder and decoder with URL-safe mode and file-to-Data-URL support.
• URL Encoder / Decoder — Encode or decode URL components instantly in your browser with no server upload.
• JWT Decoder — Decode JWT header and payload claims locally, inspect expiry and copy structured JSON.
• UUID Generator — Generate UUID v4 and RFC 9562 UUID v7 identifiers locally with secure browser randomness.
• Hash Generator — Generate SHA-256, SHA-384, SHA-512 and SHA-1 hashes for text or files in your browser.
• Regex Tester — Test JavaScript regular expressions locally with match positions and capture-group details.
• Unix Timestamp Converter — Convert Unix seconds or milliseconds to local, UTC and ISO 8601 dates and back.
• CSV ↔ JSON Converter — Convert CSV to JSON or JSON arrays to CSV locally with quoted-field support and downloadable output.
• YAML ↔ JSON Converter — Convert YAML and JSON locally in your browser with formatted downloadable output.
• JSON to TypeScript Types — Turn JSON objects and arrays into TypeScript interfaces with optional and readonly property controls.
• SQL Formatter — Format SQL for standard SQL, PostgreSQL, MySQL, SQLite, SQL Server and Oracle PL/SQL locally.
• Cron Generator & Next Runs — Generate and validate five-field cron expressions and preview the next scheduled run times locally.
• Table Converter — CSV, TSV, Markdown & HTML — Free browser-local table converter for CSV, TSV, Markdown and HTML tables with automatic format detection, copy and download.