base64-mongo-id/README.md

Tiny, browser-compatible mongo id shortener

# Base64 Mongo Id
This library converts mongo ids into base64 strings.  It has no dependencies and works in all browsers.

## Methods
  * `toBase64(mongoIdStr)`
    - **Input**: A Mongo id or 24-character hex string
    - **Output**: A 16-character base 64 string
  * `toHex(shortedIdStr)`
    - **Input**: A 16-character base 64 string
    - **Output**: A 24-character hex string

## Encoding System
The chosen base 64 encoding uses the following system. The characters were chosen to match common base 64 encoding schemes, but to be URL-safe.
  * `0` - `A`
  * `1` - `B`
  * `2` - `C`
  * `3` - `D`
  * `4` - `E`
  * `5` - `F`
  * `6` - `G`
  * `7` - `H`
  * `8` - `I`
  * `9` - `J`
  * `10` - `K`
  * `11` - `L`
  * `12` - `M`
  * `13` - `N`
  * `14` - `O`
  * `15` - `P`
  * `16` - `Q`
  * `17` - `R`
  * `18` - `S`
  * `19` - `T`
  * `20` - `U`
  * `21` - `V`
  * `22` - `W`
  * `23` - `X`
  * `24` - `Y`
  * `25` - `Z`
  * `26` - `a`
  * `27` - `b`
  * `28` - `c`
  * `29` - `d`
  * `30` - `e`
  * `31` - `f`
  * `32` - `g`
  * `33` - `h`
  * `34` - `i`
  * `35` - `j`
  * `36` - `k`
  * `37` - `l`
  * `38` - `m`
  * `39` - `n`
  * `40` - `o`
  * `41` - `p`
  * `42` - `q`
  * `43` - `r`
  * `44` - `s`
  * `45` - `t`
  * `46` - `u`
  * `47` - `v`
  * `48` - `w`
  * `49` - `x`
  * `50` - `y`
  * `51` - `z`
  * `52` - `0`
  * `53` - `1`
  * `54` - `2`
  * `55` - `3`
  * `56` - `4`
  * `57` - `5`
  * `58` - `6`
  * `59` - `7`
  * `60` - `8`
  * `61` - `9`
  * `62` - `_`
  * `63` - `-`