Security News
Cloudflare Adds Security.txt Setup Wizard
Cloudflare has launched a setup wizard allowing users to easily create and manage a security.txt file for vulnerability disclosure on their websites.
The canvg npm package is a versatile library that allows users to parse and render SVG (Scalable Vector Graphics) to a Canvas element in a browser or on the server-side using Node.js. It is particularly useful for converting SVGs into Canvas for manipulation, rendering, or exporting purposes.
Rendering SVG to Canvas
This code sample demonstrates how to load an SVG file, render it onto a Canvas, and then save the Canvas output as a PNG file. This is useful for server-side generation of images from SVG files.
const canvg = require('canvg');
const Canvas = require('canvas');
const fs = require('fs');
const canvas = Canvas.createCanvas(800, 600);
const ctx = canvas.getContext('2d');
const svg = fs.readFileSync('path/to/your/svgfile.svg', 'utf-8');
canvg(ctx, svg);
const out = fs.createWriteStream('path/to/output.png');
const stream = canvas.createPNGStream();
stream.pipe(out);
Manipulating SVG before rendering
This example shows how to manipulate SVG data by changing its color before rendering it to a Canvas. This is useful for dynamically altering the appearance of SVGs based on runtime conditions.
const canvg = require('canvg');
const Canvas = require('canvas');
const fs = require('fs');
const canvas = Canvas.createCanvas(800, 600);
const ctx = canvas.getContext('2d');
let svg = fs.readFileSync('path/to/your/svgfile.svg', 'utf-8');
// Modify SVG data
svg = svg.replace('fill:#000000', 'fill:#123456');
// Render modified SVG to canvas
canvg(ctx, svg);
Fabric.js is a powerful and rich graphics library, allowing you to manipulate and render both SVG and Canvas elements. Compared to canvg, Fabric.js offers a broader set of features for interactive object model on canvas, including a full suite of interactive capabilities such as drag and drop, object manipulation, and events.
svg2canvas is another library that focuses on converting SVG documents into Canvas elements. While similar in purpose to canvg, svg2canvas might have different implementation details or performance characteristics, making it a viable alternative depending on specific project requirements.
A port of canvg, which pareses svg input and renders the result to a canvas. http://code.google.com/p/canvg/
var canvg = require("canvg");
var Canvas = require("canvas");
var canvas = new Canvas();
canvg(canvas, '<svg>...</svg>');
/* and so on */
The canvg code is pretty much untouched. A lot of browser-specific code has to be removed or rewritten.
FAQs
JavaScript SVG parser and renderer on Canvas.
The npm package canvg receives a total of 1,168,634 weekly downloads. As such, canvg popularity was classified as popular.
We found that canvg demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 2 open source maintainers collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Security News
Cloudflare has launched a setup wizard allowing users to easily create and manage a security.txt file for vulnerability disclosure on their websites.
Security News
The Socket Research team breaks down a malicious npm package targeting the legitimate DOMPurify library. It uses obfuscated code to hide that it is exfiltrating browser and crypto wallet data.
Security News
ENISA’s 2024 report highlights the EU’s top cybersecurity threats, including rising DDoS attacks, ransomware, supply chain vulnerabilities, and weaponized AI.