// multi-utility computation suite · offline · instant · precise
┌──────────────────────────┐
│ [c] calcalyst_ │
│ computation suite │
└──────────────────────────┘
// select a module to initialize
/ search↵ open firstesc close
// adsenseEMPTY_LEADER_SLOT728×90
// keyboard shortcuts
/focus search
Escclear search · close calc
Enteropen first result
↑↓navigate list
?toggle this panel
// adsenseMOBILE_ANCHOR_SLOT320×50
// keyboard_shortcuts
/focus search
↑↓navigate module list
Enter
open first result from search
open highlighted
compute when module is open
compute when focused in a field
Escclose module · clear selection
⌫
dev.test-html-entity Calculator
Calculates the byte overhead of HTML entity encoding vs raw characters and validates entity usage in a software testing and quality assurance context. HTML entities prevent XSS — < must become < in HTML context. Modern frameworks (React, Vue) auto-escape by default; raw innerHTML bypasses this protection.
Inputs
Input Chars
Reference formula or conversion factor shown for context.
Special Pct
Reference formula or conversion factor shown for context.
Encoding Pass
Reference formula or conversion factor shown for context.
Results
encoded size
The size of the data after encoding. Encoding (e.g. Base64) typically increases size by 33%.
special chars
Count of special characters found. Presence may indicate encoding issues, injection attempts, or intentional formatting.
size ratio
The proportional relationship between two quantities.