Free Web Development Tools — Timestamp, Color, CSS & HTML Tools
Web development involves constant data transformation — converting timestamps for API responses, picking colors for UI design, optimizing CSS for performance, and encoding HTML for safe rendering. These tools handle the most common web dev operations.
All tools run in your browser with no server dependencies. Convert, minify, and encode instantly.
Tools in This Category
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Supports seconds and milliseconds.
Color Converter
Convert colors between HEX, RGB, HSL formats. Free online color picker and converter tool.
CSS Minifier
Minify CSS code online. Remove whitespace, comments, and optimize your stylesheets. Free CSS compressor.
HTML Entity Encoder
Encode and decode HTML entities online. Convert special characters to HTML-safe strings.
Common Use Cases
- ✓ Convert Unix timestamps to human-readable dates for debugging
- ✓ Translate between epoch seconds and ISO 8601 date formats
- ✓ Pick and convert colors for CSS styling across HEX, RGB, and HSL
- ✓ Minify CSS for production deployment
- ✓ Encode special characters for safe HTML output
Related Categories
Frequently Asked Questions
What is a Unix timestamp?
A Unix timestamp is the number of seconds since January 1, 1970 (UTC). It's widely used in databases, APIs, and server logs because it's timezone-independent and easy to compare.
Does the timestamp converter handle milliseconds?
Yes. The converter auto-detects whether your input is in seconds or milliseconds and converts accordingly. You can also toggle between the two formats manually.
What's the difference between HEX and RGB color formats?
HEX uses a 6-character hexadecimal string (#FF5733), while RGB uses decimal values (rgb(255, 87, 51)). They represent the same colors — HEX is more compact, RGB is more readable.
Try These Tools Now
All tools are free, run in your browser, and require no signup.