Re: Please review performance aspects of Incremental Font Transfer

Hi Nic,

Excellent, thanks for the swift response. We look forward to your comments!

On 2022-07-01 15:27, Nic Jansma wrote:
> Hi Chris,
>
> Thank you for bringing this to our attention.  We have put it on the 
> agenda[1] for our next WebPerf WG call (July 7th)
>
> [1] 
> https://docs.google.com/document/d/10dz_7QM5XCNsGeI63R864lF9gFqlqQD37B4q8Q46LMM/edit#
> - Nic
> https://nicj.net/
> @NicJ
> On 6/28/2022 8:23 AM, Chris Lilley wrote:
>> The Web Fonts WG requests review of the Incremental Font Transfer 
>> (IFT) specification by the Web Performance WG. A new WD of IFT was 
>> published today [1]
>>
>> This specification defines two methods to incrementally transfer 
>> fonts from server to client. Incremental transfer allows clients to 
>> load only the portions of the font they actually need which speeds up 
>> font loads and reduces data transfer needed to load the fonts. A font 
>> can be loaded over multiple requests where each request incrementally 
>> adds additional data.
>>
>> Earlier work [2] demonstrated the performance improvements n terms of 
>> bytes transferred and reduced network delay, for various network types.
>>
>> The current work proposes a specific networking mechanism by which 
>> the client and server can negotiate  which IFT method to use [3], and 
>> to transfer requested subsets of the entire font [4][5]. We would 
>> particularly value the review of the Web Performance WG on those 
>> aspects, although review of the entire specification would of course 
>> be most welcome.
>>
>> [1] https://www.w3.org/TR/2022/WD-IFT-20220628/
>> [2] https://www.w3.org/TR/PFE-evaluation/
>> [3] https://www.w3.org/TR/2022/WD-IFT-20220628/#method-selection
>> [4] https://www.w3.org/TR/2022/WD-IFT-20220628/#extend-subset
>> [5] 
>> https://www.w3.org/TR/2022/WD-IFT-20220628/#browser-behaviors-subsequent-requests
>>
>
-- 
Chris Lilley
@svgeesus
Technical Director @ W3C
W3C Strategy Team, Core Web Design
W3C Architecture & Technology Team, Core Web & Media