diff --git a/platforms/tktrex/backend/__tests__/native.e2e.ts b/platforms/tktrex/backend/__tests__/native.e2e.ts
index 74e0f0755..979967dbe 100644
--- a/platforms/tktrex/backend/__tests__/native.e2e.ts
+++ b/platforms/tktrex/backend/__tests__/native.e2e.ts
@@ -11,9 +11,9 @@ import { parseISO, subMinutes } from 'date-fns';
 import path from 'path';
 import nacl from 'tweetnacl';
 import { GetTest, Test } from '../test/Test';
+import { toMetadata } from '@tktrex/shared/parser/metadata';
 import {
   addDom,
-  buildMetadata,
   getLastHTMLs,
   getMetadata,
   getMetadataSchema,
@@ -93,7 +93,7 @@ describe('Parser: "native"', () => {
           getContributions: getLastHTMLs(db),
           getMetadata: getMetadata(db),
           saveResults: updateMetadataAndMarkHTML(db),
-          buildMetadata: buildMetadata,
+          buildMetadata: toMetadata,
           config: parserConfig,
           expectSources: (receivedSources) => {
             receivedSources.forEach((s) => {
@@ -113,7 +113,6 @@ describe('Parser: "native"', () => {
               id: _receivedId,
               clientTime: clientTimeExp,
               savingTime: savingTimeExp,
-              type: typeExp,
               ...expectedM
             } = expectedMetadata as any;
 
diff --git a/platforms/tktrex/backend/bin/parser.ts b/platforms/tktrex/backend/bin/parser.ts
index 95f60575d..02df78412 100644
--- a/platforms/tktrex/backend/bin/parser.ts
+++ b/platforms/tktrex/backend/bin/parser.ts
@@ -11,12 +11,12 @@ import nconf from 'nconf';
 import path from 'path';
 import {
   addDom,
-  buildMetadata,
   getLastHTMLs,
   getMetadata,
   parserConfig,
   updateMetadataAndMarkHTML,
 } from '../lib/parser';
+import { toMetadata } from '@tktrex/shared/parser/metadata';
 
 nconf.argv().env().file({ file: 'config/settings.json' });
 
@@ -85,7 +85,7 @@ const run = async (): Promise<void> => {
       getContributions: getLastHTMLs(db),
       saveResults: updateMetadataAndMarkHTML(db),
       getEntryId: (e) => e.html.id,
-      buildMetadata,
+      buildMetadata: toMetadata,
       getEntryDate: (e) => e.html.savingTime,
       getEntryNatureType: (e) => e.html.type,
       config: {
diff --git a/platforms/tktrex/backend/lib/parser.ts b/platforms/tktrex/backend/lib/parser.ts
index 7229e7529..9b39d8184 100644
--- a/platforms/tktrex/backend/lib/parser.ts
+++ b/platforms/tktrex/backend/lib/parser.ts
@@ -1,5 +1,4 @@
 import {
-  BuildMetadataFn,
   ContributionAndDOMFn,
   GetContributionsFn,
   GetMetadataFn,
@@ -8,14 +7,12 @@ import {
 } from '@shared/providers/parser.provider';
 import { sanitizeHTML } from '@shared/utils/html.utils';
 import { TKMetadata } from '@tktrex/shared/models/Metadata';
-import { TKParsers } from '@tktrex/shared/parser/parsers';
 import { TKParserConfig } from '@tktrex/shared/parser/config';
 import { HTMLSource } from '@tktrex/shared/parser/source';
-import { isValid } from 'date-fns';
 import D from 'debug';
+import { JSDOM } from 'jsdom';
 import _ from 'lodash';
 import nconf from 'nconf';
-import { JSDOM } from 'jsdom';
 
 const debug = D('lib:parserchain');
 
@@ -41,126 +38,6 @@ export const addDom: ContributionAndDOMFn<HTMLSource> = (e) => ({
   jsdom: new JSDOM(sanitizeHTML(e.html.html)).window.document,
 });
 
-export const buildMetadata: BuildMetadataFn<
-  HTMLSource,
-  TKMetadata,
-  TKParsers
-> = (entry) => {
-  // this contains the original .source (html, impression, timeline), the .findings and .failures
-  // the metadata is aggregated by unit and not unrolled in any way
-  if (!entry?.findings?.nature) return null;
-
-  let metadata: any = {
-    clientTime: entry.source.html.clientTime,
-  };
-
-  switch (entry.findings.nature.type) {
-    case 'foryou': {
-      const {
-        nature,
-        author,
-        description,
-        hashtags,
-        metrics,
-        music,
-        downloader,
-      } = entry.findings;
-      metadata = {
-        ...metadata,
-        ...nature,
-        nature,
-        ...description,
-        author,
-        metrics,
-        music,
-        hashtags,
-        ...downloader,
-      };
-      break;
-    }
-    case 'search': {
-      const { nature, downloader, search } = entry.findings;
-      metadata = {
-        ...metadata,
-        ...nature,
-        nature,
-        ...downloader,
-        ...search,
-      };
-      metadata.query = _.toLower(metadata.query);
-      metadata.nature.query = metadata.query;
-      break;
-    }
-    case 'profile': {
-      const { nature, profile, downloader } = entry.findings;
-      metadata = {
-        ...metadata,
-        nature,
-        ...nature,
-        ...downloader,
-        ...profile,
-      };
-      break;
-    }
-    case 'video':
-    case 'native': {
-      const {
-        nature,
-        description,
-        music,
-        hashtags,
-        metrics,
-        stitch,
-        author,
-        downloader,
-        native,
-      } = entry.findings;
-      metadata = {
-        ...nature,
-        nature,
-        ...description,
-        music,
-        hashtags,
-        metrics,
-        stitch,
-        author,
-        ...downloader,
-        ...native,
-      };
-      break;
-    }
-    default: {
-      metadata = {
-        ...metadata,
-        ...entry.findings,
-        ...entry.findings.nature,
-      };
-    }
-  }
-
-  /* fixed fields */
-  metadata.savingTime = isValid(entry.source.html.savingTime)
-    ? entry.source.html.savingTime.toISOString()
-    : entry.source.html.savingTime;
-  metadata.clientTime = isValid(entry.source.html.clientTime)
-    ? entry.source.html.clientTime.toISOString()
-    : entry.source.html.clientTime;
-  metadata.id = entry.source.html.id;
-  metadata.publicKey = entry.source.html.publicKey;
-  metadata.timelineId = entry.source.html.timelineId;
-  metadata.order = entry.source.html.n?.[0];
-
-  /* optional fields */
-  if (entry.source.html.geoip?.length === 2)
-    metadata.geoip = entry.source.html.geoip;
-  if (entry.source.html.researchTag?.length)
-    metadata.researchTag = entry.source.html.researchTag;
-  if (entry.source.html.experimentId?.length)
-    metadata.experimentId = entry.source.html.experimentId;
-
-  return metadata;
-};
-
 export const getLastHTMLs =
   (db: ParserProviderContextDB): GetContributionsFn<HTMLSource> =>
   async (filter, skip, amount) => {
diff --git a/platforms/tktrex/shared/src/parser/metadata.ts b/platforms/tktrex/shared/src/parser/metadata.ts
index 0c5126d3f..f0df8227b 100644
--- a/platforms/tktrex/shared/src/parser/metadata.ts
+++ b/platforms/tktrex/shared/src/parser/metadata.ts
@@ -14,6 +14,7 @@ export const toMetadata: BuildMetadataFn<HTMLSource, TKMetadata, TKParsers> = (
 
   let metadata: any = {
     clientTime: entry.source.html.clientTime,
+    thumbnails: [],
   };
 
   switch (entry.findings.nature.type) {