feat: webfont plugin

[0xb4lint]

Description

Webfont-DL plugin scans the index.html, downloads the Google Fonts CSS file(s), extracts the font URLs, downloads the fonts, generates an embedded CSS (<style> tag) or a webfont / external CSS file, add them to the bundle and injects the following code into your website's using a non-render blocking method.

The end result of this plugin is a self-hosted webfont.

Additional context

Benchmark (Lighthouse: 94 vs. 100): https://github.com/feat-agency/vite-plugin-webfont-dl#-benchmark

[antfu]

While I like this idea, it seems not able to capture the webfonts used by UnoCSS?

on build:

[0xb4lint]

Thanks for the feedback @antfu!

I'll dig deeper into UnoCSS webfont presets and implement the capture mechanism. 😉

[0xb4lint]

Hi @antfu!

I've just released the v3.5.0-beta.0 version of vite-plugin-webfont-dl.
Could you please check it and share your thoughts about adding this way as a Vitesse dependency?

I've implemented a new collection or capture mechanism for @import() rule and @font-face definitions. In the generateBundle hook the plugin will search for generated css files and scans their content.

Without vite-plugin-webfont-dl bundle example (currently only with .ttf files, but there's unocss/unocss#2114 for the rescue 😉):

dist/assets/index-xxxxxxxx.css (having @font-face definitions, with Google URLs):

*,:before,:after{box-sizing:border-box;border-width:0;border-style:solid;border-color:#e5e7eb}html{line-height:1.5;-webkit-text-size-adjust:100%;-moz-tab-size:4;tab-size:4;font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,"Apple Color Emoji","Segoe UI Emoji",Segoe UI Symbol,"Noto Color Emoji"}body{margin:0;line-height:inherit}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;font-size:1em}small{font-size:80%}sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}button,input,optgroup,select,textarea{font-family:inherit;font-size:100%;font-weight:inherit;line-height:inherit;color:inherit;margin:0;padding:0}button,select{text-transform:none}button,[type=button],[type=reset],[type=submit]{-webkit-appearance:button;background-color:transparent;background-image:none}:-moz-focusring{outline:auto}:-moz-ui-invalid{box-shadow:none}progress{vertical-align:baseline}::-webkit-inner-spin-button,::-webkit-outer-spin-button{height:auto}[type=search]{-webkit-appearance:textfield;outline-offset:-2px}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-file-upload-button{-webkit-appearance:button;font:inherit}summary{display:list-item}blockquote,dl,dd,h1,h2,h3,h4,h5,h6,hr,figure,p,pre{margin:0}fieldset{margin:0;padding:0}legend{padding:0}ol,ul,menu{list-style:none;margin:0;padding:0}textarea{resize:vertical}input::placeholder,textarea::placeholder{opacity:1;color:#9ca3af}button,[role=button]{cursor:pointer}:disabled{cursor:default}img,svg,video,canvas,audio,iframe,embed,object{display:block;vertical-align:middle}img,video{max-width:100%;height:auto}@font-face{font-family:Fira Code;font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/firacode/v21/uU9eCBsR6Z2vfE9aq3bL0fxyUs4tcw4W_D1sFVc.ttf) format("truetype")}@font-face{font-family:Fira Mono;font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/firamono/v14/N0bX2SlFPv1weGeLZDtQIQ.ttf) format("truetype")}@font-face{font-family:Fira Mono;font-style:normal;font-weight:700;font-display:swap;src:url(https://fonts.gstatic.com/s/firamono/v14/N0bS2SlFPv1weGeLZDtondv3mQ.ttf) format("truetype")}@font-face{font-family:Lato;font-style:italic;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/lato/v23/S6u8w4BMUTPHjxswWw.ttf) format("truetype")}@font-face{font-family:Lato;font-style:italic;font-weight:700;font-display:swap;src:url(https://fonts.gstatic.com/s/lato/v23/S6u_w4BMUTPHjxsI5wqPHA.ttf) format("truetype")}@font-face{font-family:Lato;font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/lato/v23/S6uyw4BMUTPHvxk.ttf) format("truetype")}@font-face{font-family:Lato;font-style:normal;font-weight:700;font-display:swap;src:url(https://fonts.gstatic.com/s/lato/v23/S6u9w4BMUTPHh6UVew8.ttf) format("truetype")}@font-face{font-family:Lobster;font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/lobster/v28/neILzCirqoswsqX9_oU.ttf) format("truetype")}@font-face{font-family:Roboto;font-style:normal;font-weight:400;font-display:swap;src:url(https://fonts.gstatic.com/s/roboto/v30/KFOmCnqEu92Fr1Me5Q.ttf) format("truetype")}

With vite-plugin-webfont-dl bundle example:

dist/assets/index-xxxxxxxx.css (there's no @font-face definition):

*,:before,:after{box-sizing:border-box;border-width:0;border-style:solid;border-color:#e5e7eb}html{line-height:1.5;-webkit-text-size-adjust:100%;-moz-tab-size:4;tab-size:4;font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,"Apple Color Emoji","Segoe UI Emoji",Segoe UI Symbol,"Noto Color Emoji"}body{margin:0;line-height:inherit}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,samp,pre{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;font-size:1em}small{font-size:80%}sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}button,input,optgroup,select,textarea{font-family:inherit;font-size:100%;font-weight:inherit;line-height:inherit;color:inherit;margin:0;padding:0}button,select{text-transform:none}button,[type=button],[type=reset],[type=submit]{-webkit-appearance:button;background-color:transparent;background-image:none}:-moz-focusring{outline:auto}:-moz-ui-invalid{box-shadow:none}progress{vertical-align:baseline}::-webkit-inner-spin-button,::-webkit-outer-spin-button{height:auto}[type=search]{-webkit-appearance:textfield;outline-offset:-2px}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-file-upload-button{-webkit-appearance:button;font:inherit}summary{display:list-item}blockquote,dl,dd,h1,h2,h3,h4,h5,h6,hr,figure,p,pre{margin:0}fieldset{margin:0;padding:0}legend{padding:0}ol,ul,menu{list-style:none;margin:0;padding:0}textarea{resize:vertical}input::placeholder,textarea::placeholder{opacity:1;color:#9ca3af}button,[role=button]{cursor:pointer}:disabled{cursor:default}img,svg,video,canvas,audio,iframe,embed,object{display:block;vertical-align:middle}img,video{max-width:100%;height:auto}

dist/index.html (@font-face definitions with local urls):

<style>@font-face{font-family:Fira Code;font-style:normal;font-weight:400;font-display:swap;src:url(/assets/uU9eCBsR6Z2vfE9aq3bL0fxyUs4tcw4W_D1sFVc-01bd31d7.ttf) format("truetype")}@font-face{font-family:Fira Mono;font-style:normal;font-weight:400;font-display:swap;src:url(/assets/N0bX2SlFPv1weGeLZDtQIQ-da844d7e.ttf) format("truetype")}@font-face{font-family:Fira Mono;font-style:normal;font-weight:700;font-display:swap;src:url(/assets/N0bS2SlFPv1weGeLZDtondv3mQ-dafd0b27.ttf) format("truetype")}@font-face{font-family:Lato;font-style:italic;font-weight:400;font-display:swap;src:url(/assets/S6u8w4BMUTPHjxswWw-ae2f4abf.ttf) format("truetype")}@font-face{font-family:Lato;font-style:italic;font-weight:700;font-display:swap;src:url(/assets/S6u_w4BMUTPHjxsI5wqPHA-0c55b8d3.ttf) format("truetype")}@font-face{font-family:Lato;font-style:normal;font-weight:400;font-display:swap;src:url(/assets/S6uyw4BMUTPHvxk-f43f1c77.ttf) format("truetype")}@font-face{font-family:Lato;font-style:normal;font-weight:700;font-display:swap;src:url(/assets/S6u9w4BMUTPHh6UVew8-02e8f4be.ttf) format("truetype")}@font-face{font-family:Lobster;font-style:normal;font-weight:400;font-display:swap;src:url(/assets/neILzCirqoswsqX9_oU-dfdc2254.ttf) format("truetype")}@font-face{font-family:Roboto;font-style:normal;font-weight:400;font-display:swap;src:url(/assets/KFOmCnqEu92Fr1Me5Q-7277cfb8.ttf) format("truetype")}</style>

[0xb4lint]

@antfu I've just released vite-plugin-webfont-dl plugin's v3.5.0.
The @font-face capture mechanism is ready to use. 😉