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test-rel-preload

Tests to explore positioning of rel="preload" links

Variations

URL Description
/test-rel-preload/tests/electro/index.html Initial templace with no changes except performance mark for fonts loaded
/test-rel-preload/tests/electro/index-base.html Base page with no preload and scripts in head
/test-rel-preload/tests/electro/index-link-preload-start-head.html Declarative preload at start of head
/test-rel-preload/tests/electro/index-link-preload-end-head.html Declarative preload at end of head element
/test-rel-preload/tests/electro/index-js-inserted-link-preload.html Script inserted preloads with snippet after blocking scripts in head
/test-rel-preload/tests/electro/index-js-inserted-link-preload-v2.html Script inserted preloads with snippet before blocking scripts in head
/test-rel-preload/tests/electro/index-link-preload-in-body.html Declarative preload in body element
/test-rel-preload/tests/electro/index-link-preload-priority-hints.html Declarative preload with low importance priority hints

Each of the variations is available on github, CloudFront and a test server running h2o

(there's no guarantee the h2o version will remain functioning as it's one of my playgrouds but I'll try to leave it alone for a while!)

Github.io

https://andydavies.github.io/test-rel-preload/tests/electro/index.html
https://andydavies.github.io/test-rel-preload/tests/electro/index-base.html
https://andydavies.github.io/test-rel-preload/tests/electro/index-link-preload-start-head.html
https://andydavies.github.io/test-rel-preload/tests/electro/index-link-preload-end-head.html
https://andydavies.github.io/test-rel-preload/tests/electro/index-js-inserted-link-preload.html
https://andydavies.github.io/test-rel-preload/tests/electro/index-js-inserted-link-preload-v2.html
https://andydavies.github.io/test-rel-preload/tests/electro/index-link-preload-in-body.html
https://andydavies.github.io/test-rel-preload/tests/electro/index-link-preload-priority-hints.html

h2o (t2.micro in AWS US East)

https://test.andydavies.me/test-rel-preload/tests/electro/index.html
https://test.andydavies.me/test-rel-preload/tests/electro/index-base.html
https://test.andydavies.me/test-rel-preload/tests/electro/index-link-preload-start-head.html
https://test.andydavies.me/test-rel-preload/tests/electro/index-link-preload-end-head.html
https://test.andydavies.me/test-rel-preload/tests/electro/index-js-inserted-link-preload.html
https://test.andydavies.me/test-rel-preload/tests/electro/index-js-inserted-link-preload-v2.html
https://test.andydavies.me/test-rel-preload/tests/electro/index-link-preload-in-body.html
https://test.andydavies.me/test-rel-preload/tests/electro/index-link-preload-priority-hints.html

CloudFront

https://d1mqs4cikzff9z.cloudfront.net/test-rel-preload/tests/electro/index-base.html
https://d1mqs4cikzff9z.cloudfront.net/test-rel-preload/tests/electro/index-link-preload-start-head.html
https://d1mqs4cikzff9z.cloudfront.net/test-rel-preload/tests/electro/index-link-preload-end-head.html
https://d1mqs4cikzff9z.cloudfront.net/test-rel-preload/tests/electro/index-js-inserted-link-preload.html
https://d1mqs4cikzff9z.cloudfront.net/test-rel-preload/tests/electro/index-js-inserted-link-preload-v2.html
https://d1mqs4cikzff9z.cloudfront.net/test-rel-preload/tests/electro/index-link-preload-in-body.html
https://d1mqs4cikzff9z.cloudfront.net/test-rel-preload/tests/electro/index-link-preload-priority-hints.html

WebPageTest Results

Not every variation is in these results, for example CloudFront's HTTP/2 prioritisation isn't great so testing on it was abandoned quickly and Chrome's prioritisation of preloads meant there was little point tesing declarative preloads in the body.

URL Scenario WPT ID Results URL
https://andydavies.github.io/test-rel-preload/tests/electro/index-base.html Dulles, Chrome, Cable 190208_RD_e7b7ae540c436d14a560baa0380f66a6 https://www.webpagetest.org/result/190208_RD_e7b7ae540c436d14a560baa0380f66a6/
https://andydavies.github.io/test-rel-preload/tests/electro/index-link-preload-start-head.html Dulles, Chrome, Cable 190208_RK_9f482a7621373bc5328ca0feed4bbbc6 https://www.webpagetest.org/result/190208_RK_9f482a7621373bc5328ca0feed4bbbc6/
https://andydavies.github.io/test-rel-preload/tests/electro/index-js-inserted-link-preload.html Dulles, Chrome, Cable 190211_TK_7ea3c87c174c01544b2a6c8073596b63 https://www.webpagetest.org/result/190211_TK_7ea3c87c174c01544b2a6c8073596b63/
https://andydavies.github.io/test-rel-preload/tests/electro/index-js-inserted-link-preload-v2.html Dulles, Chrome, Cable 190211_00_bf35fa5e5965a734ca8e7d832ebd5770 https://www.webpagetest.org/result/190211_00_bf35fa5e5965a734ca8e7d832ebd5770/
https://andydavies.github.io/test-rel-preload/tests/electro/index-base.html Dulles, Chrome, 3GFast 190208_QH_257a4da90873f7bfb2322ea67142b76e https://www.webpagetest.org/result/190208_QH_257a4da90873f7bfb2322ea67142b76e/
https://andydavies.github.io/test-rel-preload/tests/electro/index-link-preload-start-head.html Dulles, Chrome, 3GFast 190208_SF_f13d67a1fb2a8d126cf983f5307b7865 https://www.webpagetest.org/result/190208_SF_f13d67a1fb2a8d126cf983f5307b7865/
https://andydavies.github.io/test-rel-preload/tests/electro/index-js-inserted-link-preload.html Dulles, Chrome, 3GFast 190211_AX_41d6fea34d431d39f29e5b1ec1067ebd https://www.webpagetest.org/result/190211_AX_41d6fea34d431d39f29e5b1ec1067ebd/
https://andydavies.github.io/test-rel-preload/tests/electro/index-js-inserted-link-preload-v2.html Dulles, Chrome, 3GFast 190211_CG_ba557af9207e8dc7711d5f7b5b8e0f37 https://www.webpagetest.org/result/190211_CG_ba557af9207e8dc7711d5f7b5b8e0f37/
https://andydavies.github.io/test-rel-preload/tests/electro/index-base.html Dulles, Canary, Cable 190208_AB_78919b0422089833e25a1cebb1ae1fe0 https://www.webpagetest.org/result/190208_AB_78919b0422089833e25a1cebb1ae1fe0/
https://andydavies.github.io/test-rel-preload/tests/electro/index-link-preload-start-head.html Dulles, Canary, Cable 190208_0Y_666a64306bd35e7147d4306e377b5d23 https://www.webpagetest.org/result/190208_0Y_666a64306bd35e7147d4306e377b5d23/
https://andydavies.github.io/test-rel-preload/tests/electro/index-js-inserted-link-preload.html Dulles, Canary, Cable 190211_F3_9130e56a3f94495cb6e3b16326696ed6 https://www.webpagetest.org/result/190211_F3_9130e56a3f94495cb6e3b16326696ed6/
https://andydavies.github.io/test-rel-preload/tests/electro/index-js-inserted-link-preload-v2.html Dulles, Canary, Cable 190211_JS_b68e87fbf3f3174a013292d3471df6e6 https://www.webpagetest.org/result/190211_JS_b68e87fbf3f3174a013292d3471df6e6/
https://andydavies.github.io/test-rel-preload/tests/electro/index-link-preload-priority-hints.html Dulles, Canary, Cable 190211_X1_812447cb3846ba900c8ef872759eaae9 https://www.webpagetest.org/result/190211_X1_812447cb3846ba900c8ef872759eaae9/
https://andydavies.github.io/test-rel-preload/tests/electro/index-base.html Dulles, Canary, 3GFast 190208_XB_a5262e770b59c984f1f55ece27f5ec90 https://www.webpagetest.org/result/190208_XB_a5262e770b59c984f1f55ece27f5ec90/
https://andydavies.github.io/test-rel-preload/tests/electro/index-link-preload-start-head.html Dulles, Canary, 3GFast 190208_23_692a70978d1613fe070e16dbaf681717 https://www.webpagetest.org/result/190208_23_692a70978d1613fe070e16dbaf681717/
https://andydavies.github.io/test-rel-preload/tests/electro/index-js-inserted-link-preload.html Dulles, Canary, 3GFast 190211_CN_996aae9613f63e778d995cff8c7c1f5a https://www.webpagetest.org/result/190211_CN_996aae9613f63e778d995cff8c7c1f5a/
https://andydavies.github.io/test-rel-preload/tests/electro/index-js-inserted-link-preload-v2.html Dulles, Canary, 3GFast 190211_ME_7fe9981bf31c0b78a2c86727357832ba https://www.webpagetest.org/result/190211_ME_7fe9981bf31c0b78a2c86727357832ba/
https://andydavies.github.io/test-rel-preload/tests/electro/index-link-preload-priority-hints.html Dulles, Canary, 3GFast 190211_V1_116f9fda62c36f49ff6efe27dcd50f65 https://www.webpagetest.org/result/190211_V1_116f9fda62c36f49ff6efe27dcd50f65/
https://test.andydavies.me/test-rel-preload/tests/electro/index-base.html Dulles, Chrome, Cable 190208_8E_d8b35dd114ba6764fe2635625f9e5d67 https://www.webpagetest.org/result/190208_8E_d8b35dd114ba6764fe2635625f9e5d67/
https://test.andydavies.me/test-rel-preload/tests/electro/index-link-preload-start-head.html Dulles, Chrome, Cable 190208_39_11e8f6896f70f0592983b34a95499fcc https://www.webpagetest.org/result/190208_39_11e8f6896f70f0592983b34a95499fcc/
https://test.andydavies.me/test-rel-preload/tests/electro/index-js-inserted-link-preload.html Dulles, Chrome, Cable 190212_P8_ad0478fb585299950677c43e9469c2d0 https://www.webpagetest.org/result/190212_P8_ad0478fb585299950677c43e9469c2d0/
https://test.andydavies.me/test-rel-preload/tests/electro/index-js-inserted-link-preload-v2.html Dulles, Chrome, Cable 190212_BV_8db3e701f377a3cad1ccf6d20b0dff71 https://www.webpagetest.org/result/190212_BV_8db3e701f377a3cad1ccf6d20b0dff71/
https://test.andydavies.me/test-rel-preload/tests/electro/index-base.html Dulles, Chrome, 3GFast 190208_E2_06604b7c0ec7bac81eee269b9e2fe1fc https://www.webpagetest.org/result/190208_E2_06604b7c0ec7bac81eee269b9e2fe1fc/
https://test.andydavies.me/test-rel-preload/tests/electro/index-link-preload-start-head.html Dulles, Chrome, 3GFast 190208_A3_383fa9a55c8152a108969593759ff081 https://www.webpagetest.org/result/190208_A3_383fa9a55c8152a108969593759ff081/
https://test.andydavies.me/test-rel-preload/tests/electro/index-js-inserted-link-preload.html Dulles, Chrome, 3GFast 190212_6J_334d092a9dcc163c2068d504b0b2730f https://www.webpagetest.org/result/190212_6J_334d092a9dcc163c2068d504b0b2730f/
https://test.andydavies.me/test-rel-preload/tests/electro/index-js-inserted-link-preload-v2.html Dulles, Chrome, 3GFast 190212_57_1c500fb9b91c99c7a836a2f8adcd5d72 https://www.webpagetest.org/result/190212_57_1c500fb9b91c99c7a836a2f8adcd5d72/
https://test.andydavies.me/test-rel-preload/tests/electro/index-base.html Dulles, Canary, Cable 190208_W4_30cfc6fc78fdc45b9b369e7902e1e648 https://www.webpagetest.org/result/190208_W4_30cfc6fc78fdc45b9b369e7902e1e648/
https://test.andydavies.me/test-rel-preload/tests/electro/index-link-preload-start-head.html Dulles, Canary, Cable 190208_FS_5995f58791d13b3561be3bb3283c6d6e https://www.webpagetest.org/result/190208_FS_5995f58791d13b3561be3bb3283c6d6e/
https://test.andydavies.me/test-rel-preload/tests/electro/index-link-preload-priority-hints.html Dulles, Canary, Cable 190211_9A_1fab52f8315f976f18df102d3a94fed4 https://www.webpagetest.org/result/190211_9A_1fab52f8315f976f18df102d3a94fed4/
https://test.andydavies.me/test-rel-preload/tests/electro/index-base.html Dulles, Canary, 3GFast 190208_A6_ccff5003761644d2e70e5d0fba2b17f5 https://www.webpagetest.org/result/190208_A6_ccff5003761644d2e70e5d0fba2b17f5/
https://test.andydavies.me/test-rel-preload/tests/electro/index-link-preload-start-head.html Dulles, Canary, 3GFast 190208_R9_db04ccbe67cef5cb48f9cd4bfe20fe2b https://www.webpagetest.org/result/190208_R9_db04ccbe67cef5cb48f9cd4bfe20fe2b/
https://test.andydavies.me/test-rel-preload/tests/electro/index-link-preload-priority-hints.html Dulles, Canary, 3GFast 190211_MC_29f28778ed5cf6a8a7f8a02380dc5759 https://www.webpagetest.org/result/190211_MC_29f28778ed5cf6a8a7f8a02380dc5759/
https://d1mqs4cikzff9z.cloudfront.net/test-rel-preload/tests/electro/index-base.html Dulles, Chrome, Cable 190209_9Z_b778e6415fec5e9764f9a6ec8a0bb8b2 https://www.webpagetest.org/result/190209_9Z_b778e6415fec5e9764f9a6ec8a0bb8b2/
https://d1mqs4cikzff9z.cloudfront.net/test-rel-preload/tests/electro/index-link-preload-start-head.html Dulles, Chrome, Cable 190209_24_97bdcc36271819abc3adbcad163650cd https://www.webpagetest.org/result/190209_24_97bdcc36271819abc3adbcad163650cd/
https://d1mqs4cikzff9z.cloudfront.net/test-rel-preload/tests/electro/index-base.html Dulles, Chrome, 3GFast 190209_AP_6edfa5e21de919c946c7bd529ab10160 https://www.webpagetest.org/result/190209_AP_6edfa5e21de919c946c7bd529ab10160/
https://d1mqs4cikzff9z.cloudfront.net/test-rel-preload/tests/electro/index-link-preload-start-head.html Dulles, Chrome, 3GFast 190209_PQ_bd29c967a27f87c9d162a5e7c2c584e3 https://www.webpagetest.org/result/190209_PQ_bd29c967a27f87c9d162a5e7c2c584e3/
https://d1mqs4cikzff9z.cloudfront.net/test-rel-preload/tests/electro/index-base.html Dulles, Canary, Cable 190209_K0_340ff3306812d4354a49264b5fc2bc9f https://www.webpagetest.org/result/190209_K0_340ff3306812d4354a49264b5fc2bc9f/
https://d1mqs4cikzff9z.cloudfront.net/test-rel-preload/tests/electro/index-link-preload-start-head.html Dulles, Canary, Cable 190209_H3_6af5caea1277011adfcdf7c608dacd5e https://www.webpagetest.org/result/190209_H3_6af5caea1277011adfcdf7c608dacd5e/
https://d1mqs4cikzff9z.cloudfront.net/test-rel-preload/tests/electro/index-link-preload-priority-hints.html Dulles, Canary, Cable 190211_N4_756347536f145f415484f6aa05c1b74f https://www.webpagetest.org/result/190211_N4_756347536f145f415484f6aa05c1b74f/
https://d1mqs4cikzff9z.cloudfront.net/test-rel-preload/tests/electro/index-base.html Dulles, Canary, 3GFast 190209_24_ecf83b17f580ee952d641d8def6523ee https://www.webpagetest.org/result/190209_24_ecf83b17f580ee952d641d8def6523ee/
https://d1mqs4cikzff9z.cloudfront.net/test-rel-preload/tests/electro/index-link-preload-start-head.html Dulles, Canary, 3GFast 190209_5P_0adf414acd63b1067b6f20e7d200795b https://www.webpagetest.org/result/190209_5P_0adf414acd63b1067b6f20e7d200795b/
https://d1mqs4cikzff9z.cloudfront.net/test-rel-preload/tests/electro/index-link-preload-priority-hints.html Dulles, Canary, 3GFast 190211_ZD_4e9f11afce2229cfbc22bb769d8ede36 https://www.webpagetest.org/result/190211_ZD_4e9f11afce2229cfbc22bb769d8ede36/
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