Developer Utilities: Hash Generator, Color Picker, Aspect Ratio & Emoji Picker
Developer Utilities
Four tools that frontend developers and designers reach for repeatedly — collected in one bookmarkable page. No more opening multiple tabs. All processing runs entirely in-browser; no data is ever sent to a server.
Hash Generator
Convert text to MD5, SHA-1, SHA-256, or SHA-512. Used for file integrity verification, understanding password hashing, and implementing API signatures.
Hash Generator
Enter text and click Generate Hashes.
Color Picker
Select a color and copy its HEX, RGB, or HSL code.
Color Picker
HEX · RGB · HSL Color Code Converter
HEX Code
#3B82F6
RGB Values
rgb(59, 130, 246)
HSL Values
hsl(217, 91%, 60%)
Complementary
Analogous
Aspect Ratio Calculator
Aspect Ratio Calculator
Calculate & Convert Aspect Ratios and Screen Sizes
Calculation Mode
Common Ratios
Find Ratio
Emoji Picker
Emoji Picker
Copy any emoji to clipboard
Hash Algorithm Comparison
| Algorithm | Output Length | Security | Common Use |
|---|---|---|---|
| MD5 | 128-bit (32 chars) | ❌ Broken | File integrity (non-security use) |
| SHA-1 | 160-bit (40 chars) | ⚠️ Deprecated | Legacy systems |
| SHA-256 | 256-bit (64 chars) | ✅ Secure | Passwords, digital signatures |
| SHA-512 | 512-bit (128 chars) | ✅ Very secure | High-security systems |
Never use MD5 for passwords: MD5 is vulnerable to rainbow table attacks. For password storage always use a proper password hashing function such as bcrypt, Argon2, or PBKDF2.
Common Aspect Ratios
| Ratio | Used For |
|---|---|
| 16:9 | Monitors, TVs, YouTube |
| 4:3 | Legacy TVs, presentation slides |
| 1:1 | Instagram square posts |
| 9:16 | Mobile vertical, Reels / Shorts |
| 21:9 | Ultrawide monitors |
OIYO Editorial
Editorial DeskThe OIYO editorial desk researches money, law, lifestyle, and self-understanding topics against primary sources and public statistics. Every piece carries source notes and is reviewed on a regular cycle for accuracy and usefulness.