Handy utilities with a beautiful touch.
A curated toolbox for developers and power users — encoders, converters, generators, and inspectors. Fast, local, and delightful.
Utilities
22 of 22Base64
Encode or decode text and files using Base64.
Color Tools
Convert between HEX, RGB, and HSL, and check WCAG contrast ratios.
Cron Helper
Parse cron expressions — human-readable description and next run times.
Text Diff
Compare two texts side-by-side with line-level added/removed highlights.
Document Converter
Convert between Markdown, DOCX, PDF, and HTML formats.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files.
HEIC Converter
Convert HEIC/HEIF images (iPhone photos) to JPEG, PNG, PDF, WebP and more.
Image Converter
Convert and compress images between JPG, PNG, and WebP with optional resizing.
JSON / YAML
Format, validate, convert between JSON and YAML, and diff two documents.
JWT Decoder
Decode and inspect JWT tokens — header, payload, expiry.
Key Generator
Generate HMAC secrets, JWT signing keys, session keys, app keys, and UUIDs.
Images to PDF
Combine multiple images (JPEG, PNG, WebP, HEIC…) into a single PDF.
PDF Compress
Shrink a PDF by rasterizing pages at lower DPI and JPEG quality.
PDF Merge
Combine multiple PDF files into a single document.
PDF Split
Split a PDF into individual single-page files, delivered as a ZIP.
PDF to Images
Extract each page of a PDF as a PNG image.
QR Code Generator
Generate QR codes from any text or URL.
Regex Tester
Test Java regular expressions with live match highlighting and group capture.
Time Calculator
Add or subtract durations, and compute the difference between two dates.
Timestamp Converter
Convert between Unix epoch timestamps and human-readable dates across timezones.
URL Encode / Decode
Percent-encode or decode text for safe use in URLs.
World Clock
Compare times across cities side-by-side with a scheduler-style hourly grid.