diff --git a/index.js b/index.js
index 5ecd929..6020d81 100644
--- a/index.js
+++ b/index.js
@@ -1 +1,46 @@
-console.log("ASDF");
\ No newline at end of file
+import fs from "fs-extra";
+import puppeteer from "puppeteer-core";
+import path from "path";
+
+export async function fit(inputs, outputs){
+    let dest = outputs;
+    let input = inputs;
+
+    const browser = await puppeteer.launch({
+        executablePath: "/Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome",
+        args: ['--headless', '--no-sandbox', '--disable-gpu', '--disable-dev-shm-usage'],
+    });
+
+    try{
+        const page = await browser.newPage();
+
+        let svg = fs.readFileSync(input, {encoding: 'utf8'});
+
+        await page.setContent(svg);
+            
+        const result = await (await page.waitForSelector("svg")).evaluate((el) => {
+            let { x, y, width, height } = el.getBBox();
+            
+            el.setAttribute('viewBox', `${x} ${y} ${width} ${height}`);
+            
+            if(el.hasAttribute('width')){
+                el.setAttribute('width', width);
+            }
+            
+            if(el.hasAttribute('height')){
+                el.setAttribute('height', height);
+            }
+            
+            return el.outerHTML;
+        });
+
+        fs.mkdirpSync(dest);
+        fs.writeFileSync(`${dest}/${path.basename(input)}`, result);
+    } catch(e){console.log(e);}
+
+    await browser.close();
+}
+
+export default {
+    fit
+};
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