[{"data":1,"prerenderedAt":51},["ShallowReactive",2],{"blog-en-office-chat-apps-cache-mac":3},{"meta":4,"html":13,"headings":14,"raw":50},{"title":5,"description":6,"topic":7,"date":8,"author":9,"icons":10},"DingTalk, Lark and WeCom Keep Growing on Your Mac: How to Clear Their Cache","All three work apps embed a web engine, so caches pile up. Tell cache apart from chat data, then clear it with each app's own tools or WashBear.","app-cache-cleanup","2026-10-29","WashBear Team",[11,12],"app-window","scrub-brush","\u003Cp>DingTalk, Lark (Feishu in mainland China) and WeCom are more than chat apps. Approvals, documents, meetings and all kinds of workplace mini apps live inside them too. Most of those features are built as web pages, and all three apps embed a web engine, so every page you open leaves behind some web, script and graphics cache. Add the photos and files sent in chats, and a few gigabytes of usage after a while is common.\u003C\u002Fp>\n\u003Cp>The cache is safe to clear, but chat history and files need more care. Below, you'll see how each app defines its cache, where its built-in cleanup lives, and how to handle all three at once with WashBear.\u003C\u002Fp>\n\u003Ch2 id=\"cache-vs-chat-data\">\u003Ca class=\"heading-anchor\" href=\"#cache-vs-chat-data\" aria-hidden=\"true\" tabindex=\"-1\">#\u003C\u002Fa>Cache versus chat data\u003C\u002Fh2>\n\u003Cp>The three apps don't mean quite the same thing by "clear cache", so it's worth knowing what each says before you start:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>\u003Cstrong>Lark\u003C\u002Fstrong>: the \u003Ca href=\"https:\u002F\u002Fwww.larksuite.com\u002Fhc\u002Fen-US\u002Farticles\u002F360048488246-clear-cache-and-system-reset-faqs\" target=\"_blank\" rel=\"noopener\">Lark Help Center\u003C\u002Fa> explains that chat records and online documents are stored in the cloud, and clearing the cache only removes locally cached images, videos and similar content.\u003C\u002Fli>\n\u003Cli>\u003Cstrong>DingTalk\u003C\u002Fstrong>: the \u003Ca href=\"https:\u002F\u002Fwww.dingtalk.com\u002Fqidian\u002Fhelp-detail-6656475.html\" target=\"_blank\" rel=\"noopener\">DingTalk Help Center\u003C\u002Fa> says clearing the cache deletes the local message cache (images, videos and files) on the current device only, and that afterward chat history can only be loaded for the last 180 days.\u003C\u002Fli>\n\u003Cli>\u003Cstrong>WeCom\u003C\u002Fstrong>: the \u003Ca href=\"https:\u002F\u002Fopen.work.weixin.qq.com\u002Fhelp2\u002Fpc\u002F16753\" target=\"_blank\" rel=\"noopener\">WeCom Help Center\u003C\u002Fa> notes that in chats with external contacts and WeChat users, images and files are kept in the cloud for a limited number of days. An image you have viewed may become unavailable after you clear the cache, because it has expired on the server.\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>So the part you can clear without touching your chats is the rendering cache from the built-in web engine, temporary files from mini apps and workplace pages, and logs. Keep the chat databases and the files you've downloaded.\u003C\u002Fp>\n\u003Ch2 id=\"built-in-tools\">\u003Ca class=\"heading-anchor\" href=\"#built-in-tools\" aria-hidden=\"true\" tabindex=\"-1\">#\u003C\u002Fa>Use each app's own cleanup\u003C\u002Fh2>\n\u003Ch3 id=\"feishu\">\u003Ca class=\"heading-anchor\" href=\"#feishu\" aria-hidden=\"true\" tabindex=\"-1\">#\u003C\u002Fa>Lark\u003C\u002Fh3>\n\u003Cp>Click your profile photo in the upper-left corner, choose Settings > General, then click the Clear cache button, which shows how much it will free. Lark says this doesn't clear chat records or online documents stored in the cloud.\u003C\u002Fp>\n\u003Cp>Two other options are easy to mix up:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>Reset next to Reset Settings, under Settings > System Diagnostics, restores all settings and clears all local cache data. Anything stored only on your device, such as message drafts, is lost. Use it to fix problems, not for routine cleanup.\u003C\u002Fli>\n\u003Cli>Feishu also offers 清理消息文件 (clean up message files) under Settings > General. It deletes the images, videos and files you've sent to chats, and afterward they can't be viewed or downloaded in those chats. You don't need it to free up space on your Mac.\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Ch3 id=\"dingtalk\">\u003Ca class=\"heading-anchor\" href=\"#dingtalk\" aria-hidden=\"true\" tabindex=\"-1\">#\u003C\u002Fa>DingTalk\u003C\u002Fh3>\n\u003Cp>Click your profile photo in the upper-left corner and open 设置与隐私 (Settings and Privacy). Its 存储空间 (Storage) page lists cache data and chat data separately; in some versions the option sits under 高级 (Advanced). Clearing the cache data is usually enough. Think twice before clearing chat data: according to DingTalk, once the local message cache is gone, older chat history may no longer load.\u003C\u002Fp>\n\u003Ch3 id=\"wecom\">\u003Ca class=\"heading-anchor\" href=\"#wecom\" aria-hidden=\"true\" tabindex=\"-1\">#\u003C\u002Fa>WeCom\u003C\u002Fh3>\n\u003Cp>WeCom's help center currently says that batch-clearing files and images from chats isn't available on the Mac. On a Mac, what you can safely clear is mainly the cache of WeCom's built-in web engine, which WashBear handles as described below.\u003C\u002Fp>\n\u003Cdiv class=\"callout callout-tip\">\u003Cp class=\"callout-title\">Tip\u003C\u002Fp>\u003Cp>If your Mac was issued by your employer, check whether your company has rules about keeping chat history and files before you clear any chat data.\u003C\u002Fp>\n\u003C\u002Fdiv>\u003Ch2 id=\"washbear\">\u003Ca class=\"heading-anchor\" href=\"#washbear\" aria-hidden=\"true\" tabindex=\"-1\">#\u003C\u002Fa>Clear all three with WashBear\u003C\u002Fh2>\n\u003C!--demo:deepClean-->\u003Cp>Opening each app's settings one by one gets tedious. \u003Cstrong>Deep Cleanup\u003C\u002Fstrong> in WashBear finds the caches of all three apps together and clears only the cache.\u003C\u002Fp>\n\u003Col>\n\u003Cli>Open \u003Cstrong>Deep Cleanup\u003C\u002Fstrong> and click \u003Cstrong>Start Scan\u003C\u002Fstrong>.\u003C\u002Fli>\n\u003Cli>Look for these items under \u003Cstrong>Application caches\u003C\u002Fstrong>. Only items with content on this Mac are shown:\u003C\u002Fli>\n\u003C\u002Fol>\n\u003Cdiv class=\"table-wrap\">\u003Ctable>\u003Cthead>\u003Ctr>\u003Cth>Cleanup item\u003C\u002Fth>\u003Cth>What it clears\u003C\u002Fth>\u003Cth>What it keeps\u003C\u002Fth>\u003C\u002Ftr>\u003C\u002Fthead>\u003Ctbody>\u003Ctr>\u003Ctd>\u003Cstrong>DingTalk content cache\u003C\u002Fstrong>\u003C\u002Ftd>\u003Ctd>Cached mini apps, temporary images, cards, themes and web resources classified as disposable by DingTalk\u003C\u002Ftd>\u003Ctd>Chats, databases, downloaded files, settings and accounts\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>\u003Cstrong>DingTalk logs and image cache\u003C\u002Fstrong>\u003C\u002Ftd>\u003Ctd>Diagnostic logs and temporary image cache\u003C\u002Ftd>\u003Ctd>Chats, downloads and account data\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>\u003Cstrong>Lark rendering cache\u003C\u002Fstrong>\u003C\u002Ftd>\u003Ctd>Rebuildable web response, code, GPU, shader and Service Worker cache\u003C\u002Ftd>\u003Ctd>Accounts, messages, downloads, workspaces, browser storage and sign-in state\u003C\u002Ftd>\u003C\u002Ftr>\u003Ctr>\u003Ctd>\u003Cstrong>WeCom application cache\u003C\u002Fstrong>\u003C\u002Ftd>\u003Ctd>Rebuildable web, code, GPU, shader, component and Service Worker cache\u003C\u002Ftd>\u003Ctd>Profiles, messages, mail, documents, downloads, browser data and sign-in state\u003C\u002Ftd>\u003C\u002Ftr>\u003C\u002Ftbody>\u003C\u002Ftable>\u003C\u002Fdiv>\n\u003Col start=\"3\">\n\u003Cli>All of these are marked \u003Cstrong>Low risk\u003C\u002Fstrong> and are preselected by \u003Cstrong>Smart recommendation\u003C\u002Fstrong>. Expand an item to see its exact locations.\u003C\u002Fli>\n\u003Cli>Click \u003Cstrong>Clean\u003C\u002Fstrong>. Each of these items needs its app closed first. Select the apps under \u003Cstrong>Close running apps (optional)\u003C\u002Fstrong> in \u003Cstrong>Confirm cleanup\u003C\u002Fstrong>, and WashBear closes them before cleaning. Save any documents and send any messages you're working on first.\u003C\u002Fli>\n\u003Cli>Click \u003Cstrong>Start cleanup\u003C\u002Fstrong>.\u003C\u002Fli>\n\u003C\u002Fol>\n\u003Cp>DingTalk may download some cached content again after it restarts, which is expected. Cleanup deletes files directly rather than moving them to the Trash, and the result is recorded in \u003Cstrong>Operation History\u003C\u002Fstrong>.\u003C\u002Fp>\n\u003Cp>The same category also includes items for other work apps, such as \u003Cstrong>Tencent Meeting cache\u003C\u002Fstrong>, \u003Cstrong>WPS Office application cache\u003C\u002Fstrong>, \u003Cstrong>Microsoft Teams cache\u003C\u002Fstrong> and \u003Cstrong>Slack cache\u003C\u002Fstrong>, which likewise clear only the cache. For WeChat, see \u003Ca href=\"\u002Fen\u002Fblog\u002Fwechat-mac-storage\">WeChat for Mac taking up tens of GB\u003C\u002Fa>.\u003C\u002Fp>\n\u003Ch2 id=\"do-not-delete\">\u003Ca class=\"heading-anchor\" href=\"#do-not-delete\" aria-hidden=\"true\" tabindex=\"-1\">#\u003C\u002Fa>Folders not to delete by hand\u003C\u002Fh2>\n\u003Cp>Even if these folders look huge in Finder, don't delete them. Besides cache, they hold chat databases, accounts and workspace data:\u003C\u002Fp>\n\u003Cul>\n\u003Cli>DingTalk: \u003Ccode>~\u002FLibrary\u002FApplication Support\u002FDingTalkMac\u003C\u002Fcode>\u003C\u002Fli>\n\u003Cli>Lark: \u003Ccode>~\u002FLibrary\u002FApplication Support\u002FLarkShell\u003C\u002Fcode>\u003C\u002Fli>\n\u003Cli>WeCom: \u003Ccode>~\u002FLibrary\u002FContainers\u002Fcom.tencent.WeWorkMac\u003C\u002Fcode>\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>WashBear only clears specific cache folders inside them and leaves everything else alone. To learn how it decides what's safe, see \u003Ca href=\"\u002Fen\u002Fdocs\u002Fdeep-clean\">Deep Cleanup\u003C\u002Fa>.\u003C\u002Fp>\n\u003Ch2 id=\"faq\">\u003Ca class=\"heading-anchor\" href=\"#faq\" aria-hidden=\"true\" tabindex=\"-1\">#\u003C\u002Fa>FAQ\u003C\u002Fh2>\n\u003Ch3 id=\"sign-in\">\u003Ca class=\"heading-anchor\" href=\"#sign-in\" aria-hidden=\"true\" tabindex=\"-1\">#\u003C\u002Fa>Will I have to sign in again?\u003C\u002Fh3>\n\u003Cp>All of these WashBear items keep your account data, and the Lark and WeCom items explicitly keep your sign-in state. Just open the app again after cleaning.\u003C\u002Fp>\n\u003Ch3 id=\"slower\">\u003Ca class=\"heading-anchor\" href=\"#slower\" aria-hidden=\"true\" tabindex=\"-1\">#\u003C\u002Fa>Why is the app slower right after cleaning?\u003C\u002Fh3>\n\u003Cp>With the cache gone, workplace pages, documents and mini apps have to load from scratch the first time. Things return to normal after that.\u003C\u002Fp>\n\u003Ch3 id=\"how-often\">\u003Ca class=\"heading-anchor\" href=\"#how-often\" aria-hidden=\"true\" tabindex=\"-1\">#\u003C\u002Fa>How often should I clean?\u003C\u002Fh3>\n\u003Cp>There's no need for a schedule. Clean when disk space gets tight; Lark also suggests clearing the cache when low local space stops you from sending images or downloading attachments.\u003C\u002Fp>\n",[15,19,22,26,29,32,35,38,41,44,47],{"depth":16,"id":17,"text":18},2,"cache-vs-chat-data","Cache versus chat data",{"depth":16,"id":20,"text":21},"built-in-tools","Use each app's own cleanup",{"depth":23,"id":24,"text":25},3,"feishu","Lark",{"depth":23,"id":27,"text":28},"dingtalk","DingTalk",{"depth":23,"id":30,"text":31},"wecom","WeCom",{"depth":16,"id":33,"text":34},"washbear","Clear all three with WashBear",{"depth":16,"id":36,"text":37},"do-not-delete","Folders not to delete by hand",{"depth":16,"id":39,"text":40},"faq","FAQ",{"depth":23,"id":42,"text":43},"sign-in","Will I have to sign in again?",{"depth":23,"id":45,"text":46},"slower","Why is the app slower right after cleaning?",{"depth":23,"id":48,"text":49},"how-often","How often should I clean?","\nDingTalk, Lark (Feishu in mainland China) and WeCom are more than chat apps. Approvals, documents, meetings and all kinds of workplace mini apps live inside them too. Most of those features are built as web pages, and all three apps embed a web engine, so every page you open leaves behind some web, script and graphics cache. Add the photos and files sent in chats, and a few gigabytes of usage after a while is common.\n\nThe cache is safe to clear, but chat history and files need more care. Below, you'll see how each app defines its cache, where its built-in cleanup lives, and how to handle all three at once with WashBear.\n\n## Cache versus chat data {#cache-vs-chat-data}\n\nThe three apps don't mean quite the same thing by \"clear cache\", so it's worth knowing what each says before you start:\n\n- **Lark**: the [Lark Help Center](https:\u002F\u002Fwww.larksuite.com\u002Fhc\u002Fen-US\u002Farticles\u002F360048488246-clear-cache-and-system-reset-faqs) explains that chat records and online documents are stored in the cloud, and clearing the cache only removes locally cached images, videos and similar content.\n- **DingTalk**: the [DingTalk Help Center](https:\u002F\u002Fwww.dingtalk.com\u002Fqidian\u002Fhelp-detail-6656475.html) says clearing the cache deletes the local message cache (images, videos and files) on the current device only, and that afterward chat history can only be loaded for the last 180 days.\n- **WeCom**: the [WeCom Help Center](https:\u002F\u002Fopen.work.weixin.qq.com\u002Fhelp2\u002Fpc\u002F16753) notes that in chats with external contacts and WeChat users, images and files are kept in the cloud for a limited number of days. An image you have viewed may become unavailable after you clear the cache, because it has expired on the server.\n\nSo the part you can clear without touching your chats is the rendering cache from the built-in web engine, temporary files from mini apps and workplace pages, and logs. Keep the chat databases and the files you've downloaded.\n\n## Use each app's own cleanup {#built-in-tools}\n\n### Lark {#feishu}\n\nClick your profile photo in the upper-left corner, choose Settings > General, then click the Clear cache button, which shows how much it will free. Lark says this doesn't clear chat records or online documents stored in the cloud.\n\nTwo other options are easy to mix up:\n\n- Reset next to Reset Settings, under Settings > System Diagnostics, restores all settings and clears all local cache data. Anything stored only on your device, such as message drafts, is lost. Use it to fix problems, not for routine cleanup.\n- Feishu also offers 清理消息文件 (clean up message files) under Settings > General. It deletes the images, videos and files you've sent to chats, and afterward they can't be viewed or downloaded in those chats. You don't need it to free up space on your Mac.\n\n### DingTalk {#dingtalk}\n\nClick your profile photo in the upper-left corner and open 设置与隐私 (Settings and Privacy). Its 存储空间 (Storage) page lists cache data and chat data separately; in some versions the option sits under 高级 (Advanced). Clearing the cache data is usually enough. Think twice before clearing chat data: according to DingTalk, once the local message cache is gone, older chat history may no longer load.\n\n### WeCom {#wecom}\n\nWeCom's help center currently says that batch-clearing files and images from chats isn't available on the Mac. On a Mac, what you can safely clear is mainly the cache of WeCom's built-in web engine, which WashBear handles as described below.\n\n> [!TIP]\n> If your Mac was issued by your employer, check whether your company has rules about keeping chat history and files before you clear any chat data.\n\n## Clear all three with WashBear {#washbear}\n\n::demo deepClean\n\nOpening each app's settings one by one gets tedious. **Deep Cleanup** in WashBear finds the caches of all three apps together and clears only the cache.\n\n1. Open **Deep Cleanup** and click **Start Scan**.\n2. Look for these items under **Application caches**. Only items with content on this Mac are shown:\n\n| Cleanup item | What it clears | What it keeps |\n|---|---|---|\n| **DingTalk content cache** | Cached mini apps, temporary images, cards, themes and web resources classified as disposable by DingTalk | Chats, databases, downloaded files, settings and accounts |\n| **DingTalk logs and image cache** | Diagnostic logs and temporary image cache | Chats, downloads and account data |\n| **Lark rendering cache** | Rebuildable web response, code, GPU, shader and Service Worker cache | Accounts, messages, downloads, workspaces, browser storage and sign-in state |\n| **WeCom application cache** | Rebuildable web, code, GPU, shader, component and Service Worker cache | Profiles, messages, mail, documents, downloads, browser data and sign-in state |\n\n3. All of these are marked **Low risk** and are preselected by **Smart recommendation**. Expand an item to see its exact locations.\n4. Click **Clean**. Each of these items needs its app closed first. Select the apps under **Close running apps (optional)** in **Confirm cleanup**, and WashBear closes them before cleaning. Save any documents and send any messages you're working on first.\n5. Click **Start cleanup**.\n\nDingTalk may download some cached content again after it restarts, which is expected. Cleanup deletes files directly rather than moving them to the Trash, and the result is recorded in **Operation History**.\n\nThe same category also includes items for other work apps, such as **Tencent Meeting cache**, **WPS Office application cache**, **Microsoft Teams cache** and **Slack cache**, which likewise clear only the cache. For WeChat, see [WeChat for Mac taking up tens of GB](\u002Fblog\u002Fwechat-mac-storage).\n\n## Folders not to delete by hand {#do-not-delete}\n\nEven if these folders look huge in Finder, don't delete them. Besides cache, they hold chat databases, accounts and workspace data:\n\n- DingTalk: `~\u002FLibrary\u002FApplication Support\u002FDingTalkMac`\n- Lark: `~\u002FLibrary\u002FApplication Support\u002FLarkShell`\n- WeCom: `~\u002FLibrary\u002FContainers\u002Fcom.tencent.WeWorkMac`\n\nWashBear only clears specific cache folders inside them and leaves everything else alone. To learn how it decides what's safe, see [Deep Cleanup](\u002Fdocs\u002Fdeep-clean).\n\n## FAQ {#faq}\n\n### Will I have to sign in again? {#sign-in}\n\nAll of these WashBear items keep your account data, and the Lark and WeCom items explicitly keep your sign-in state. Just open the app again after cleaning.\n\n### Why is the app slower right after cleaning? {#slower}\n\nWith the cache gone, workplace pages, documents and mini apps have to load from scratch the first time. Things return to normal after that.\n\n### How often should I clean? {#how-often}\n\nThere's no need for a schedule. Clean when disk space gets tight; Lark also suggests clearing the cache when low local space stops you from sending images or downloading attachments.\n",1793258439544]