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fix: Add DOCTYPE and XML preamble in exported SVG documents (#9386)

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* Add DOCTYPE and XML preamble in exported SVG documents

* Update packages/excalidraw/data/index.ts

---------

Co-authored-by: David Luzar <5153846+dwelle@users.noreply.github.com>
This commit is contained in:
Rubén Norte 2025-04-14 20:25:18 +01:00 committed by GitHub
parent 01304aac49
commit 6fe7de8020
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GPG Key ID: B5690EEEBB952194
2 changed files with 9 additions and 1 deletions
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3
packages/common/src/constants.ts
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@ -319,6 +319,9 @@ export const DEFAULT_MAX_IMAGE_WIDTH_OR_HEIGHT = 1440;
export const MAX_ALLOWED_FILE_BYTES = 4 * 1024 * 1024;
export const SVG_NS = "http://www.w3.org/2000/svg";
export const SVG_DOCUMENT_PREAMBLE = `<?xml version="1.0" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
`;
export const ENCRYPTION_KEY_BITS = 128;

7
packages/excalidraw/data/index.ts
View File

@ -5,6 +5,7 @@ import {
isFirefox,
MIME_TYPES,
cloneJSON,
SVG_DOCUMENT_PREAMBLE,
} from "@excalidraw/common";
import { getNonDeletedElements } from "@excalidraw/element";
@ -134,7 +135,11 @@ export const exportCanvas = async (
if (type === "svg") {
return fileSave(
svgPromise.then((svg) => {
return new Blob([svg.outerHTML], { type: MIME_TYPES.svg });
// adding SVG preamble so that older software parse the SVG file
// properly
return new Blob([SVG_DOCUMENT_PREAMBLE + svg.outerHTML], {
type: MIME_TYPES.svg,
});
}),
{
description: "Export to SVG",