inline-urlescape

URL-escapes string (like text from a SVG file) so it can be used in a data URI.

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inline-urlescape ================ URL-escapes strings (like text from a SVG file) so it can be used in a data URI. Build Status NPM Integration ----------- Q: How can I use this in Sass (libsass) to inline a SVG file in my (S)CSS (for a background image)? There is now an Sass eyeglass module for conveniently inlining SVG files in Sass: eyeglass-inline-svg. And for just escaping some string, the underlying eyeglass-inline-urlescape module can be also used standalone. Installation ------------ ```` npm install --save inline-urlescape ```` Usage ----- ```` var inlineUrlescape = require('inline-urlescape'); var testSvg = ''; svgUrl(testSvg); => %3Csvg xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg' viewBox%3D'0 0 300 300'%3E%3Cpath fill%3D'%23804D35' d%3D'M35 254.6l9.7 28.8 211 1.7 12-34L35 255'%2F%3E%3Cpath fill%3D'%232F2B33' d%3D'M40 288c1.3 1.2 221 0 221 0s5.3-6.4-50.2-10c-34.4.8-55.7 6-55.7 6s-25-6-47-6c-91 4-69 8.8-68 10z'%2F%3E%3Cpath fill%3D'%23EE304E' d%3D'M15.2 187.8s20.3-30 36.2-35.4c3.6 1.2 189 1.5 198.3 1.2 26.8 5.8 23.5 24 31.6 26.4 1.8-.3 11 79.6-19.8 77.6-1.3 2.5-50.6 4-55.7 4.5s-21.4 10-43 13c-4.6 1-78.7 0-78.7 0s-34-4-55-26c-1-2 0-9-13-60z'%2F%3E%3Cellipse cx%3D'151.3' cy%3D'128.9' fill%3D'%23FFEDC3' rx%3D'109.8' ry%3D'76.8'%2F%3E%3Cpath fill%3D'%2300B8C3' d%3D'M43 114.6c0-49 58-81 107-82 82.7-2 106.5 68.2 105.3 67.6C133.3 44.7 43 114.6 43 114.6z'%2F%3E%3Cpath fill%3D'%23FCEE21' d%3D'M44.3 117.7c43.7-26 94-35.7 144.5-30.4 16 1.7 32 5 47.6 9.8 4.5 2 9 3 13.4 5l3.5 2c-1 0 .3 0 .6 1 4 2 8-4.2 3-6.2-22-10-46-14.6-69-17-51-6.5-103 4.5-148 31-4 2.3-1 9 4 6.3zm72.4-84.4s9-4.8 10.4-3.8 2-2.3 2-2.3l9-2h11l1-2.3s12-1 13 2c0 4 15.7 4 15 10-2.5 8-12 2-13 4-11.4 6-17 0-17 0l-13 4-1-7s-3 5-8 5.3c-17.3 4-9-8.5-9-8.5zm-100.5 155C6 189.3-7 221 24 227.3c10.4-2.6 40 2 36-13s-33.8-24.2-44-26zm267.4-7s5-1 8 4 4.7 22.2 4 27.6-.6 10-13.8 11-18.8-9-19.8-8-14.2 1-14.2 1-7.4-7 1.3-12c4-3 4-8 4-8s5-12 9-14 22-2 22-2z'%2F%3E%3Cpath fill%3D'none' stroke%3D'%23000' stroke-miterlimit%3D'10' d%3D'M68 167.3c11 12 91 71 170.3-5.6m-73 45.6c2 36.4-1.3 65.6-1.3 65.6'%2F%3E%3Cellipse cx%3D'157.1' cy%3D'213.4' rx%3D'1' ry%3D'3'%2F%3E%3Cellipse cx%3D'159.7' cy%3D'238.7' rx%3D'1.2' ry%3D'3.3'%2F%3E%3Cellipse cx%3D'157.2' cy%3D'262.7' rx%3D'2' ry%3D'3.4'%2F%3E%3Cpath fill%3D'none' stroke%3D'%23000' stroke-miterlimit%3D'10' d%3D'M139 188.5c15.7 5.5 38 0 38 0'%2F%3E%3Cellipse cx%3D'182.5' cy%3D'119.1' fill%3D'%23FFF' transform%3D'matrix(.81 -.587 .587 .81 -35.153 129.678)' rx%3D'26.7' ry%3D'30.5'%2F%3E%3Cellipse cx%3D'126.5' cy%3D'119.1' fill%3D'%23FFF' transform%3D'matrix(.884 .467 -.467 .884 70.21 -45.287)' rx%3D'26.7' ry%3D'30.5'%2F%3E%3Ccircle cx%3D'138.6' cy%3D'117.9' r%3D'3.3'%2F%3E%3Ccircle cx%3D'170.6' cy%3D'117.9' r%3D'3.3'%2F%3E%3Cpath d%3D'M134.7 172.4c3.4-3.5 7.7-3.2 7.7-3.2s24.2-.2 25.5.3 2 3 2 4.2c-1 1.4-5 10.7-7 13.3-2 1.8-9 0-9 0s-4-1-5-1.8c-.7-.3-3.4 0-4-.2s-11.5-10.6-12-12.3'%2F%3E%3Cpath fill%3D'%23FFF' d%3D'M149 172.3c-.2-1-1-1.7-1.8-1.5l-3 .5c-.8 0-1.3 1-1.2 2 .2 1 1 1.7 1.8 1.5l3-.5c1 0 1.4-1 1.2-2zm9 1.5c.2-.8-.3-1.6-1-1.8l-4.2-.8c-.7 0-1.5.4-1.6 1.2v.3c-.3.8.2 1.6 1 1.8l4 .8c.8 0 1.6-.4 1.7-1.2zm9-.4c0-1-.8-1.7-1.6-1.6l-5 .4c-.8 0-1.4 1-1.3 1.8 1 1 1 1.7 2 1.6l5-.4c1 0 2-1 2-1.8z'%2F%3E%3C%2Fsvg%3E ```` ```` .test { background: url(data:image/svg+xml;charset=utf8,%3Csvg xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg' viewBox%3D'0 0 300 300'%3E%3Cpath fill%3D'%23804D35' d%3D'M35 254.6l9.7 28.8 211 1.7 12-34L35 255'%2F%3E%3Cpath fill%3D'%232F2B33' d%3D'M40 288c1.3 1.2 221 0 221 0s5.3-6.4-50.2-10c-34.4.8-55.7 6-55.7 6s-25-6-47-6c-91 4-69 8.8-68 10z'%2F%3E%3Cpath fill%3D'%23EE304E' d%3D'M15.2 187.8s20.3-30 36.2-35.4c3.6 1.2 189 1.5 198.3 1.2 26.8 5.8 23.5 24 31.6 26.4 1.8-.3 11 79.6-19.8 77.6-1.3 2.5-50.6 4-55.7 4.5s-21.4 10-43 13c-4.6 1-78.7 0-78.7 0s-34-4-55-26c-1-2 0-9-13-60z'%2F%3E%3Cellipse cx%3D'151.3' cy%3D'128.9' fill%3D'%23FFEDC3' rx%3D'109.8' ry%3D'76.8'%2F%3E%3Cpath fill%3D'%2300B8C3' d%3D'M43 114.6c0-49 58-81 107-82 82.7-2 106.5 68.2 105.3 67.6C133.3 44.7 43 114.6 43 114.6z'%2F%3E%3Cpath fill%3D'%23FCEE21' d%3D'M44.3 117.7c43.7-26 94-35.7 144.5-30.4 16 1.7 32 5 47.6 9.8 4.5 2 9 3 13.4 5l3.5 2c-1 0 .3 0 .6 1 4 2 8-4.2 3-6.2-22-10-46-14.6-69-17-51-6.5-103 4.5-148 31-4 2.3-1 9 4 6.3zm72.4-84.4s9-4.8 10.4-3.8 2-2.3 2-2.3l9-2h11l1-2.3s12-1 13 2c0 4 15.7 4 15 10-2.5 8-12 2-13 4-11.4 6-17 0-17 0l-13 4-1-7s-3 5-8 5.3c-17.3 4-9-8.5-9-8.5zm-100.5 155C6 189.3-7 221 24 227.3c10.4-2.6 40 2 36-13s-33.8-24.2-44-26zm267.4-7s5-1 8 4 4.7 22.2 4 27.6-.6 10-13.8 11-18.8-9-19.8-8-14.2 1-14.2 1-7.4-7 1.3-12c4-3 4-8 4-8s5-12 9-14 22-2 22-2z'%2F%3E%3Cpath fill%3D'none' stroke%3D'%23000' stroke-miterlimit%3D'10' d%3D'M68 167.3c11 12 91 71 170.3-5.6m-73 45.6c2 36.4-1.3 65.6-1.3 65.6'%2F%3E%3Cellipse cx%3D'157.1' cy%3D'213.4' rx%3D'1' ry%3D'3'%2F%3E%3Cellipse cx%3D'159.7' cy%3D'238.7' rx%3D'1.2' ry%3D'3.3'%2F%3E%3Cellipse cx%3D'157.2' cy%3D'262.7' rx%3D'2' ry%3D'3.4'%2F%3E%3Cpath fill%3D'none' stroke%3D'%23000' stroke-miterlimit%3D'10' d%3D'M139 188.5c15.7 5.5 38 0 38 0'%2F%3E%3Cellipse cx%3D'182.5' cy%3D'119.1' fill%3D'%23FFF' transform%3D'matrix(.81 -.587 .587 .81 -35.153 129.678)' rx%3D'26.7' ry%3D'30.5'%2F%3E%3Cellipse cx%3D'126.5' cy%3D'119.1' fill%3D'%23FFF' transform%3D'matrix(.884 .467 -.467 .884 70.21 -45.287)' rx%3D'26.7' ry%3D'30.5'%2F%3E%3Ccircle cx%3D'138.6' cy%3D'117.9' r%3D'3.3'%2F%3E%3Ccircle cx%3D'170.6' cy%3D'117.9' r%3D'3.3'%2F%3E%3Cpath d%3D'M134.7 172.4c3.4-3.5 7.7-3.2 7.7-3.2s24.2-.2 25.5.3 2 3 2 4.2c-1 1.4-5 10.7-7 13.3-2 1.8-9 0-9 0s-4-1-5-1.8c-.7-.3-3.4 0-4-.2s-11.5-10.6-12-12.3'%2F%3E%3Cpath fill%3D'%23FFF' d%3D'M149 172.3c-.2-1-1-1.7-1.8-1.5l-3 .5c-.8 0-1.3 1-1.2 2 .2 1 1 1.7 1.8 1.5l3-.5c1 0 1.4-1 1.2-2zm9 1.5c.2-.8-.3-1.6-1-1.8l-4.2-.8c-.7 0-1.5.4-1.6 1.2v.3c-.3.8.2 1.6 1 1.8l4 .8c.8 0 1.6-.4 1.7-1.2zm9-.4c0-1-.8-1.7-1.6-1.6l-5 .4c-.8 0-1.4 1-1.3 1.8 1 1 1 1.7 2 1.6l5-.4c1 0 2-1 2-1.8z'%2F%3E%3C%2Fsvg%3E); } ```` Credits ------- Authors, users and commenters of the following pages (and thanks to many more):
  • https://codepen.io/Tigt/blog/optimizing-svgs-in-data-uris
  • https://github.com/Fyrd/caniuse/issues/1746#issuecomment-133416565
If I forgot to mention participants, feel free to contact me and I will add you to the list. :wink: Optimization ------------ Q: There is extraneous whitespace in the output, how can I optimize? This module does one job and does it well, it URL-escapes a text file (notably a SVG file) in an efficient manner (and as an alternative to base64) for safe usage in a data URI. Optimization of the SVG should be performed before escaping with this tool, using another tool like svgo or in a build step (e.g. gulp-svgmin to optimized SVG intermediary files.). Testing ------- One could assume that properly encoding a text file like this should ensure compatibility with all browsers and clients, the unsafe characters are escaped according to URL spec (see Credits). But according to the articles (see Credits) this module is based on, some browsers, notably Internet Explorer, may have issues where other browsers parse/show the image properly. So any testing would probably involve negative tests with SVG specimen or ways of usage causing trouble in specific browsers. Maybe a test setup involving selenium with different browser and version combinations and screenshot diff?