IPA webfont naming scheme

The filename format is charname.GIF. The charname is composed of the name of the letter, followed by the transformations applied to the letter. Regular transformations include:

Small caps, sc: ->
Performable upon: a b g h i l n oe r y
Inversion, inv: ->
Performable upon: a ascript c h m r rleg rsc v w y
Reversing, rev: ->:
Performable upon: e epsilon glottal glottalbar
Script, script: ->
Performable upon: a v
Upper hook, hook: ->
Performable upon: b d eng g gsc h
Right tail, rttail: ->
Performable upon: d l m n rinv r s t z
Left tail, lfttail: ->
Performable upon: n
Superscripting, sup: ->
Performable upon: gamma glottalrev h j l n w
Curly tail, curly: ->
Performable upon: c j z
Dental diacritic, dent: ->
Performable upon: d l n r t
Bar, bar: ->
Performable upon: esh glottal h i j o u vlinebar
Cedilla, cedilla: ->:
Performable upon: c
Smaller version (not smallcaps), sm: ->
Performable upon: gamma
Belt, belt: ->
Performable upon: l
Tilde, tilde: ->
Performable upon: l
Central dot, dot: ->
Performable upon: o
Slash, slash: ->
Performable upon: o
Long leg, leg: ->
Performable upon: r
Clipping, clip: ->:
Performable upon: r
Closing, close: ->:
Performable upon: epsilonrev

Multiple transformations can be performed, and order is important. To represent a ligature between two letters they are just concatenated (e.g. "ae.GIF"

). There are a few foreign letters and letter-like entities:

beta: Greek letter beta
chi: Greek letter chi
ej: ejective diacritic
eng: 'n' with right tail curving under (not the same as nrttail, which curves outward)
epsilon: Greek letter epsilon
esh: long 'S'
eth: Icelandic letter eth
excl: exclamation point
gamma: Greek letter gamma
glottal: glottal stop mark
phi: Greek letter phi
rh: rhotic diacritic
schwa: the inimitable schwa
theta: Greek letter theta
upsilon: Greek letter upsilon
vline: vertical line, used to represent a dental click
ezh: similar to Arabic number '3'

And lastly, there are a number of diacritics to modify the canonical symbols. Many are intended to be written directly over or under the letter; this is impossible using the webfont. For a few common combinations, the letter and diacritic together have their own graphic, but for the most part these diacritics will have to be postposed, sorry.

Tones: there are eleven tone diacritics. Each one has a vertical line on the right and a horizontal or diagonal line extending leftwards from it; if one imagines the diacritic as numbered from one at the bottom to five at the top, the tone number indicates from left to right the orientation of the horizontal or diagonal line. The available tones are: 11 13 15 22 31 33 35 44 51 53 55
adv: advanced (subscript plus)
advtongue: advanced tongue-root (left-pointing subscript T)
apic: apical (upward-opening subscripted square bracket)
breathy: breathy (subscript umlaut/diæresis)
centr: centralized (superscript umlaut/diæresis)
creaky: creaky (subscript tilde)
dent: dental (downward-opening subscripted square bracket)
down: downstep (down arrow)
foot: minor group/foot (vertical line)
globfall: global fall (down-right arrow)
globrise: global rise (up-right arrow)
halflong: half-long (top triangle of long diacritic)
intonation: major group/intonation (double vertical line)
laminal: laminal (subscript rectangle)
lessround: less rounded (subscript left half of a circle)
linglab: linguolabial (subscript seagull (like ^^, kind of))
link: linking (subscript connecting tie)
long: long (like a colon, but with two triangles pointing at each other)
lower: lowered (subscript T)
midcent: mid-centralized (superscript x)
moreround: more rounded (subscript right half of a circle)
nas: nasalized (superscript tilde)
noaud: no audible release (superscript postposed up-right corner)
nonsyll: non-syllabic (subscript top half of a circle)
primstress: primary stress (superscript postposed short vertical bar)
rais: raised (subscript inverted T)
retr: retracted (underbar)
retrtongue: retracted tongue-root (subscript right-pointing T)
secstress: secondary stress (subscript postposed short vertical bar)
short: short (superscript lower half of a circle/breve)
syll: syllabic (subscript short vertical bar)
syllbreak: syllable break (period)
tie: tie (superscript tie bar)
up: upstep (up arrow)
vel: velarized or pharyngealized (superimposed tilde)
vls: voiceless (subscript circle)

Here are some pages which should help identify the various symbols:

Pulmonary consonants