Question

Is HTTP/3 supported by Firefox ?

3 tháng trước

10:22 23/11/25

Hello,

Could you confirm that HTTP/3 is supported since Firefox 135 ?

Best Regards.

Hello, Could you confirm that HTTP/3 is supported since Firefox 135 ? Best Regards.

Hi,

Yes, it is supported in Firefox since version 88. For reference, see https://caniuse.com/http3

👍 1

Answer 1 · 2025-11-23 18:22:19.178791+00:00

Denys

10:36 23/11/25

Hi,

Yes, it is supported in Firefox since version 88. For reference, see https://caniuse.com/http3

Answer 2 · 2025-11-23 18:22:19.178791+00:00

11:01 23/11/25

Hello,

Thanks for your answer. I check with the Firefox latest version (eg 145.0.1) and it looks like HTTP/3 support is enabled by default.

Indeed, in the adress bar I submitted about:config and searched for network.http.http3. and found that network.http.http3.enable is set to true :-)

Best Regards.

Được chỉnh sửa bởi Franos13 vào 11:02:47 PST 23 tháng 11, 2025