Online tools
Hybrid Toolkit
Free online toolbox
Get started
11 tools
JSON Formatter
Format, minify, and validate JSON in your browser. Nothing is uploaded.
FormatDeveloper
UUID Generator
Generate UUID v4 values in bulk for tests and API work.
GeneratorDeveloper
QR Code Generator
Turn text into QR codes in your browser. One line becomes one code, so you can generate a batch at once. Nothing is uploaded.
GeneratorText
Base64 Encode / Decode
Encode or decode text as Base64 locally, including Unicode.
EncodingText
Timestamp Converter
Convert Unix timestamps to dates and dates back to timestamps in your browser.
FormatDeveloper
Hash & Encrypt
Hash text with MD5, SHA, CRC32, and HMAC, or encrypt it with AES-256-GCM, CBC, and CTR in your browser.
EncodingText
Linux Cheatsheet
Quick Linux command syntax: search, copy an example, paste into the terminal. Not a man page.
Developer
HEIC to JPG
Convert HEIC and HEIF photos to JPG in your browser. Batch convert, drag and drop, or paste with Ctrl+V / ⌘V. Nothing is uploaded.
ImageFormat
Image Converter
Convert JPEG, PNG, WebP, GIF, BMP, AVIF, SVG, and HEIC in your browser. Batch convert, drag and drop, or paste with Ctrl+V / ⌘V.
ImageFormat
Screen Test
Screen test in your browser: full-screen solids, grids, contrast ramps, and gradients to find dead pixels, backlight bleed, and banding. A black overlay also works as a night cover.
Utility
Text Compare
Compare two texts in your browser. Insertions are green, deletions are red, and changed words are highlighted in place. Nothing is uploaded.
TextDeveloper