Dev Tools
11 tools in this category, and none of them send anything off your device. Everything below computes in the tab you already have open.
What is in this category
Section titled “What is in this category”| Tool | What it does | Leaves your device |
|---|---|---|
| Hash Generator | Generate and verify cryptographic hashes (SHA-256, SHA-384, SHA-512, SHA-1) | no |
| Password Generator | Generate cryptographically secure random passwords | no |
| Base64 Encoder | Encode and decode Base64 text and files, in both RFC 4648 alphabets | no |
| URL Encoder | Encode, decode, and build URLs with query parameters | no |
| JSON Formatter | Format, validate, and minify JSON data | no |
| JWT Decoder | Decode and inspect JSON Web Tokens | no |
| Timestamp Converter | Convert between Unix timestamps and human-readable dates | no |
| Cron Parser | Parse and understand cron expressions | no |
| Regex Tester | Test and debug regular expressions with live highlighting | no |
| Color Converter | Convert colors between HEX, RGB, HSL, and CMYK formats | no |
| Lorem Generator | Generate placeholder text for designs and mockups | no |
The last column is no for every row, which is the whole point of this category: you can work through it on a locked-down network, on a plane, or inside the desktop app with the network off.
Tool by tool
Section titled “Tool by tool”Hash Generator
Section titled “Hash Generator”Generate and verify cryptographic hashes (SHA-256, SHA-384, SHA-512, SHA-1). Open it at /tools/hash-generator/.
- Multiple algorithms
- File hashing
- Hash verification
Runs entirely on your device; no request is made.
Password Generator
Section titled “Password Generator”Generate cryptographically secure random passwords. Open it at /tools/password-generator/.
- Customizable
- Strength meter
- Secure random
Runs entirely on your device; no request is made.
Base64 Encoder/Decoder
Section titled “Base64 Encoder/Decoder”Encode and decode Base64 text and files, in both RFC 4648 alphabets. Open it at /tools/base64-encoder/.
- Text encoding
- File encoding
- URL-safe (RFC 4648 §5)
Runs entirely on your device; no request is made.
URL Encoder/Decoder
Section titled “URL Encoder/Decoder”Encode, decode, and build URLs with query parameters. Open it at /tools/url-encoder/.
- URL encoding
- Query builder
- Percent encoding
Runs entirely on your device; no request is made.
JSON Formatter
Section titled “JSON Formatter”Format, validate, and minify JSON data. Open it at /tools/json-formatter/.
- Pretty print
- Validation
- Minify
Runs entirely on your device; no request is made.
JWT Decoder
Section titled “JWT Decoder”Decode and inspect JSON Web Tokens. Open it at /tools/jwt-decoder/.
- Decode payload
- Expiry check
- Claim inspection
Runs entirely on your device; no request is made.
Unix Timestamp Converter
Section titled “Unix Timestamp Converter”Convert between Unix timestamps and human-readable dates. Open it at /tools/timestamp-converter/.
- Unix to date
- Date to Unix
- Timezone support
Runs entirely on your device; no request is made.
Cron Expression Parser
Section titled “Cron Expression Parser”Parse and understand cron expressions. Open it at /tools/cron-parser/.
- Cron syntax
- Next runs
- Human readable
Runs entirely on your device; no request is made.
Regex Tester
Section titled “Regex Tester”Test and debug regular expressions with live highlighting. Open it at /tools/regex-tester/.
- Live matching
- Capture groups
- Common patterns
Runs entirely on your device; no request is made.
Color Converter
Section titled “Color Converter”Convert colors between HEX, RGB, HSL, and CMYK formats. Open it at /tools/color-converter/.
- HEX/RGB/HSL
- Color picker
- CMYK support
Runs entirely on your device; no request is made.
Lorem Ipsum Generator
Section titled “Lorem Ipsum Generator”Generate placeholder text for designs and mockups. Open it at /tools/lorem-generator/.
- Paragraphs
- Sentences
- Word count
Runs entirely on your device; no request is made.
How this page is produced
Section titled “How this page is produced”Everything above is generated at docs build time from lib/tool-registry.ts. Editing this page by hand does nothing, because the next build overwrites it. Fix the registry instead.