diff --git a/lib/apiswagger.js b/lib/apiswagger.js
index 0675f3f..c650659 100644
--- a/lib/apiswagger.js
+++ b/lib/apiswagger.js
@@ -2,6 +2,7 @@ const nodeinfo = require('activitypub-express/pub/nodeinfo')
 
 module.exports = (app, client) => {
     const constant = require('./constant'),
+        zlib = require('zlib'),
         clean = str => {
             return str.replace(/[\/\\^$+?()`'¡¿¨!"·%&=;,\|\[\]{}]+/gmi, '')
         }
@@ -476,7 +477,6 @@ module.exports = (app, client) => {
                 instancescomment = instances.map(i => ({
                     instance: i._source.instance, comment: i._source.blocks.find(block => block.domain === clean(req.params.instance)).comment
                 }))
-            global.gc()
             res.json({
                 block_count: instances.length,
                 instances: instancescomment,
@@ -486,4 +486,34 @@ module.exports = (app, client) => {
             res.status(404).end()
         }
     })
+    /**
+    * @swagger
+    * /api/download_index:
+    *   get:
+    *     summary: Retrieve all content of ElasticSearch index.
+    *     description: Retrieve all content of ElasticSearch index.
+    *     responses:
+    *       200:
+    *         description: A file compressed with gzip.
+    *         content:
+    *           application/octect-stream
+    */
+    app.use('/api/download_index', async (req, res) => {
+        if (req.params.instance && req.params.instance.length > 0) {
+            const result = await client.search({
+                index: constant.index,
+                size: 9999,
+                query: {
+                    match_all: {}
+                }
+            }, { asStream: true })
+            res.writeHead(200, {
+                'Content-Type': 'application/x-gzip',
+                'Content-disposition': 'attachment; filename=fediblock-index.json.gz'
+            })
+            result.pipe(zlib.createGzip()).pipe(res, { end: true })
+        } else {
+            res.status(404).end()
+        }
+    })
 }
diff --git a/lib/fediblock.js b/lib/fediblock.js
index 6a4c399..f376361 100644
--- a/lib/fediblock.js
+++ b/lib/fediblock.js
@@ -148,10 +148,8 @@ module.exports = async (client, apex, app) => {
 						console.error(e)
 					}
 				}
-				global.gc()
 				yield 0
 			} catch (e) {
-				global.gc()
 				console.error(e)
 				yield 1
 			}
@@ -220,7 +218,6 @@ module.exports = async (client, apex, app) => {
 			}
 		},
 		scanReturn = async () => {
-			global.gc()
 			app.locals.scannum = 0
 			if (servers && servers.length > 0) {
 				return await scan(servers.shift())
diff --git a/package.json b/package.json
index 5347ce5..0d05a9b 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,7 @@
   },
   "license": "MIT",
   "scripts": {
-    "start": "node --max-old-space-size=1024 --expose-gc server.js",
+    "start": "node --max-old-space-size=1024 server.js",
     "build": "rm -rf dist/* && parcel build public/index.html --no-source-maps --dist-dir dist/",
     "install": "cd node_modules && rm -rf http-signature && rm -rf request/node_modules/http-signature && mv @peertube/http-signature ."
   },