Zero-Upload Developer Tools That Run Locally in Your Browser
Execute JSON formatting, PDF operations, regular expressions, and cryptography directly on your device. Zero server calls, zero tracking, and zero telemetry.
Developer & Code Tools
JSON Formatter
Validate, pretty-print, tree-inspect, and minify raw JSON with lossless 64-bit BigInt precision.
Base64 Encode/Decode
Bidirectional encoding & decoding for plaintext, binary buffers, SVGs, and base64 data URIs.
URL & HTML Entity Encoder/Decoder
Encode and decode URLs, query parameters, and HTML5 entities with RFC 3986 escaping and interactive query matrix.
RegEx Live Tester
Real-time regex match engine with capture group breakdown, regex flags, and a 200ms ReDoS guard.
PDF & Document Tools
PDF Merger & Reorder
Combine multiple PDF files into one clean document with visual thumbnail drag-and-drop sequencing.
Image to PDF & PDF to Image
Convert JPG, PNG, and WebP images into formatted multi-page PDFs, or extract PDF pages to high-res images in a ZIP.
Text & Content Tools
Text Inspector & Metrics
Calculate word counts, character totals, speaking time, and reading grade levels with zero network calls.
Case Converter
Convert copy into camelCase, snake_case, kebab-case, CONSTANT_CASE, and Title Case in real-time.
SEO Slug Generator
Turn titles into clean, URL-safe slugs with multilingual diacritic transliteration and customizable stops.