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feat: migrate label rendering from sharp to resvg for improved SVG support
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Björn Pöttker
2026-05-08 09:05:05 +02:00
parent 45c371a60d
commit 658c6de74e
3 changed files with 220 additions and 2 deletions
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paperless-backend/package-lock.json
Generated
+216
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@@ -16,6 +16,7 @@
"@nestjs/platform-express": "^11.0.1",
"@nestjs/schedule": "^6.1.1",
"@nestjs/typeorm": "^11.0.0",
"@resvg/resvg-js": "^2.6.2",
"@types/form-data": "^2.2.1",
"@types/passport-jwt": "^4.0.1",
"@types/uuid": "^10.0.0",
@@ -3121,6 +3122,221 @@
"url": "https://opencollective.com/pkgr"
}
},
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"node_modules/@selderee/plugin-htmlparser2": {
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paperless-backend/package.json
+1
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@@ -27,6 +27,7 @@
"@nestjs/platform-express": "^11.0.1",
"@nestjs/schedule": "^6.1.1",
"@nestjs/typeorm": "^11.0.0",
"@resvg/resvg-js": "^2.6.2",
"@types/form-data": "^2.2.1",
"@types/passport-jwt": "^4.0.1",
"@types/uuid": "^10.0.0",
paperless-backend/src/label-print-agent/label-renderer.service.ts
+3 -2
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@@ -1,6 +1,6 @@
import { Injectable, Logger } from '@nestjs/common';
import * as QRCode from 'qrcode';
import sharp from 'sharp';
import { Resvg } from '@resvg/resvg-js';
import type { LabelElement } from '../database/entities/barcode-template.entity';
const MM_TO_PX = 300 / 25.4; // 300 DPI
@@ -89,6 +89,7 @@ export class LabelRendererService {
${parts.join('\n ')}
</svg>`;
return sharp(Buffer.from(svg)).png().toBuffer();
const resvg = new Resvg(svg, { font: { loadSystemFonts: true } });
return Buffer.from(resvg.render().asPng());
}
}