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feat: conic-gradient and repeating-conic-gradient #739

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feat: conic-gradient and repeating-conic-gradient #739

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f20d376
feat: conic-gradient and repeating-conic-gradient
lolistream Mar 24, 2026
9d5c02e
conic-gradient
lolistream Mar 24, 2026
31b862e
Update src/builder/gradient/conic.ts
lolistream Mar 25, 2026
edc11e7
fix: support hints for conic gradient
lolistream Mar 31, 2026
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2 changes: 1 addition & 1 deletion README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -232,7 +232,7 @@ Satori uses the same Flexbox [layout engine](https://yogalayout.com) as React Na

<tr><td rowspan="7">Background</td></tr>
<tr><td><code>backgroundColor</code></td><td>Supported, single value</td><td></td></tr>
<tr><td><code>backgroundImage</code></td><td><code>linear-gradient</code>, <code>repeating-linear-gradient</code>, <code>radial-gradient</code>, <code>repeating-radial-gradient</code>, <code>url</code>, single value</td><td></td></tr>
<tr><td><code>backgroundImage</code></td><td><code>linear-gradient</code>, <code>repeating-linear-gradient</code>, <code>radial-gradient</code>, <code>repeating-radial-gradient</code>, <code>conic-gradient</code>, <code>repeating-conic-gradient</code>, <code>url</code>, single value</td><td></td></tr>
<tr><td><code>backgroundPosition</code></td><td>Support single value</td><td></td></tr>
<tr><td><code>backgroundSize</code></td><td>Support <code>cover</code>, <code>contain</code>, <code>auto</code>, and two-value sizes i.e. <code>10px 20%</code></td><td><a href="https://og-playground.vercel.app/?share=ZZXXjqNIFIZfpeWb2RW9Itik3tmRwAQDJgeDNTfkHEwwYdTvvnhGWq003HDOqZ8fDlX11Y9D2Ebx4ePwNcqf35u3t2Fcq_ifHz9e8dtbFudpNn68wRD0_qsy59GY_b8Q-GGZ9u3UREbcxf4u_tK0f_U_4y-_acx8i3dF2Dajnze_jwu1n74EU1_9Efmj_5G_CmDXpH8H_hBjp_fcoVVjhiQ-ban9Ukw7Y-10j3j9ldtnyttvND6LubMHTABVrO4YJypeXGSdBtuwwCRWANMRpy7W49jmUFvuyU0fnmZeduAiZ6ZZaueUXM0V5VDBNs2OtfX6MimW0iTTBD0JeYbFeSOrpLGR5_iMkrHGYSAGEFJl77xRCsjNDC_MmIHV8KDOdsboszJAXchEZifrokEtSyrT5cUkbkifODIuyKC2oblXy8yAqyt-VLcJr8UhYJc2PGoWrW4dppebvMnexThypKZD-IRPx2dFjjnj3eAxqMU1XLTipNKFhrv-1Te3ZWE41aKHtHUogVtC98ZlniyqI9lkcOS5xQnRSlTV0-tKaHckalSGADnQlda0i12YNG7wcO3J-IrGTiWLXtviZ6tc1LDpTrmyhe5uybE1CSYwMHinsikaLkdSepmcxdufvxhlwGcYZFBUF9yqXt9fIT5MC0L3H99JUi4UOqz4PPHkFsq72zM8WjYnYGqRWukUlGh4gcFkBi7zyiOuA0c-D4-VW-zWoSnBLSFHV2qkeLMWcwGd7jWpWVCi5AgElPbN7TB1vJpQbagUW4USzTgmUwZs5ckWiKtbeoovGVYKVZYplg37_NjrsGiWVdUBSYO2HADFotULPEJ1kl-3_QMDRpkEjjNQJkq5rpYMXk6gMN14z9Nh9lIhURHsoqlSm5QUTb2sFTs1ag4JjyqDx8eRoJY24GdbW3E7mrfC2jYpulOIfsX9q8znWkYJIU1Lpl3RHbd1jvHq2hVJ27w8Hu0DQtHereC9qSlsH2pBzdY8HbMclOVBaxkCNQPbCS280YnTjDj1vRVdXk2GTcHUtcLIC2kuZmc-F0CjT5O0bxLguUZX0-46gocAOemyO9ud16EQRYoEzoUHKbUT2c6Z6iVo8ikGz_c28GlfMMZFXId-3ndkk55Y6pEpLu00ERw5DiE5ibPw6Jg0pxiXMCDPY5Xv0ooyy07SOY2ItUJA0GcAc95NKKS17ERr91XBFBjo7kTiSi-nM-MjY9_WyXH_6BRO6OxOPK9k9bA925tNd9HmcmRzKI6YXmAFWWNmoOixTTtukLU1GRFeZIuaqTM24QNH063N0Ubq86kAJkdSfl7B89Dt0_KkVXVtMRYgb4Wsogggys-O-89XYZGtuDtasBrKY6ZmsIg42314VQNix3wBqQC70a0ODgxY3BbqKvgnxsscyioJTTAUoJHSrXUiwWwtLqtAakcVCILGBrn4C1p0-WKUzlCXhIAKTFUJTXzV9zXLWaU56fX5_OfvsDy3VdvvsJyzfIy_vEY_P783376CO8u_fW8O74e2G_O2GQ4fPw4_wX34IHZwH35h_fBxeiVRHEzp4SPxqyF-P8R1W-TW2r3OhHH-me0-yc5rtg7i6PAx9lP8-X4Y_WBXZHFVtXPbV9Hh818">Example</a></td></tr>
<tr><td><code>backgroundClip</code></td><td><code>border-box</code>, <code>text</code></td><td></td></tr>
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19 changes: 18 additions & 1 deletion src/builder/background-image.ts
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Expand Up @@ -4,6 +4,7 @@ import { buildXMLString } from '../utils.js'
import { resolveImageData } from '../handler/image.js'
import { buildLinearGradient } from './gradient/linear.js'
import { buildRadialGradient } from './gradient/radial.js'
import { buildConicGradient } from './gradient/conic.js'
import cssColorParse from 'parse-css-color'

interface Background {
Expand Down Expand Up @@ -147,7 +148,9 @@ export default async function backgroundImage(
image.startsWith('linear-gradient(') ||
image.startsWith('repeating-linear-gradient(') ||
image.startsWith('radial-gradient(') ||
image.startsWith('repeating-radial-gradient(')
image.startsWith('repeating-radial-gradient(') ||
image.startsWith('conic-gradient(') ||
image.startsWith('repeating-conic-gradient(')

const dimensions =
isKeywordSize && isGradient
Expand Down Expand Up @@ -195,6 +198,20 @@ export default async function backgroundImage(
)
}

if (
image.startsWith('conic-gradient(') ||
image.startsWith('repeating-conic-gradient(')
) {
return buildConicGradient(
{ id, width, height, repeatX, repeatY },
image,
dimensions,
offsets,
inheritableStyle,
from
)
}

if (image.startsWith('url(')) {
const [src, imageWidth, imageHeight] = await resolveImageData(
image.slice(4, -1)
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