Developer Tools
Essential utilities for developers: formatters, encoders, testers and more.
About Developer Tools
Developer tools save time on repetitive tasks that come up constantly during software development. Formatting JSON so it is readable, generating a UUID, decoding a JWT, testing a regex pattern, encoding a URL: these tasks are simple but switching contexts to do them manually adds friction. DevHive's developer tools keep you in flow.
Common Uses
- •Format or minify JSON before committing it to a config file or API response
- •Decode a JWT token to inspect its claims and expiry without writing code
- •Generate a UUID for a database record, file name, or session ID
- •Test a regular expression against sample text before using it in code
- •Encode or decode Base64 strings for API payloads or data URIs
- •Convert between Unix timestamps and readable dates
Tip
The hash generator is useful for quickly verifying file integrity. Generate an SHA-256 hash of a string and compare it against a known hash to confirm the content has not changed.
What you can do
JSON formatter and validator
Pretty-print minified JSON or minify formatted JSON for production. The validator catches syntax errors and shows exactly where the JSON is broken.
JWT decoder
Paste any JWT token to decode the header and payload instantly. See the algorithm, claims, issued-at time, and expiry. Note: this tool decodes only, it does not verify signatures.
Regex tester
Write a regular expression and test it against sample text. Matches are highlighted in real time. Useful for building validation patterns, search-and-replace logic, or parsing text.
JSON Formatter
Format and validate JSON with syntax highlighting
Base64 Encoder/Decoder
Encode and decode Base64 strings
JWT Decoder
Decode and inspect JWT tokens
UUID Generator
Generate UUID and ULID identifiers
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes
Cron Expression Generator
Generate and explain cron expressions
Regex Tester
Test and debug regular expressions
URL Encoder/Decoder
Encode and decode URLs and query strings
Password Generator
Generate strong random passwords
HTML Entities Encoder / Decoder
Encode & decode HTML special characters
CSS Minifier & Beautifier
Minify or beautify CSS code
Random Number Generator
Generate random numbers in any range
CSS Box Shadow Generator
Visual CSS box-shadow builder with live preview
Color Picker
Pick a colour and get HEX, RGB, HSL values
IP Address Lookup
Find your public IP address and location
HTML Formatter & Minifier
Beautify or minify HTML code
Color Contrast Checker
Check WCAG color contrast for accessibility
CSS Gradient Generator
Generate CSS gradients visually
Color Palette Generator
Generate color palettes from a base color
QR Code Generator
Generate custom QR codes for URLs or text
Barcode Generator
Generate barcodes in multiple formats