JWT Decoder
Decode JWT (HS256, RS256, etc). Parse header, payload, signature, expiration timer, standard claims. 100% offline.
All Tools
Lightweight, fast, private tools. No install, just use.
Crontab Explainer
Parse cron expressions, see breakdown, next 5 execution times, human explanation, common presets. Offline.
SQL Formatter
Pretty print SQL with uppercase keywords, smart indentation. Supports SELECT, FROM, WHERE, JOIN, GROUP BY, ORDER BY, INSERT, UPDATE, DELETE, CREATE. Minify, copy, download. Offline.
UUID Generator
Generate UUID v4 random identifiers. Batch 1-50, uppercase or lowercase, optional hyphens, copy single or all. 100% offline.
Base64 Codec
Encode and decode Base64 strings, with file-to-data-URL support for images and binary files. Copy and clear. 100% offline.
URL Encoder/Decoder
Encode and decode URLs and query strings. Parse parameters into a key-value table. Copy individual params or full URL. 100% offline.
Unix Timestamp Converter
Live current Unix timestamp (seconds & ms), date ↔ epoch converter, ISO 8601 output, timezone offset. 100% offline.
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes from text. Batch multiple inputs, copy results, history of last 10. 100% offline via Web Crypto + custom MD5.
Fake Data Generator
Generate fake person data: name, email, phone, address, city, country, job, company, credit card, IP, user-agent, UUID. Locale ID/EN. Batch 1-50. Export JSON/CSV. 100% offline.
JSON ↔ YAML Converter
Convert JSON to YAML and YAML to JSON. Validate JSON, format pretty/compact, YAML indent 2/4. Drag-drop files. Copy/download. 100% offline.
Color Format Converter
Convert color between HEX, RGB, HSL, HSV, CMYK, and named CSS colors. Live swatch + WCAG contrast ratio checker. Color picker. Copy any format. 100% offline.
CSV ↔ JSON Converter
Convert CSV to JSON and JSON to CSV. Custom delimiter, header detection, quoted fields, multi-line values, escaped quotes. Copy/download. 100% offline.
Binary / Hex / Base32 / Octal Converter
Convert text to and from binary (8-bit ASCII), hex, base32, and octal. Multi-format. Spacing and separator options. Copy all. 100% offline.
JWT Generator
Sign JWT with HS256/HS384/HS512, decode tokens, edit header/payload, claim presets (iat/exp/iss/aud/jti), Web Crypto API. 100% offline.
SVG Optimizer
Minify SVG by stripping comments, metadata, hidden elements, empty groups, whitespace, unused IDs. Live preview, size savings %, copy, download. 100% offline.
Gradient Extractor
Upload an image, extract 3-10 dominant colors via frequency quantization, render as linear/radial gradient, export CSS / JSON / PNG. 100% offline, no CDN.