adding: 40px; color: #222; background: #fffaf2; }\n main { max-width: 720px; margin: auto; }\n .panel { border: 1px solid #ded8ca; border-radius: 12px; padding: 24px; background: white; }\n button { border: 0; border-radius: 8px; padding: 10px 14px; background: #c96442; color: white; }\n \n\n\n

Preview HTML instantly

Edit the source on the left and inspect the sandboxed preview on the right.

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\n\n","actions":{"newDoc":"New HTML","more":"More actions","importFile":"Import file","importUrl":"Import URL","download":"Download HTML","copySource":"Copy source","format":"Format","minify":"Minify","loadSample":"Load sample","run":"Run","refresh":"Refresh","share":"Share","duplicate":"Duplicate","wrap":"Wrap lines","clear":"Clear","fullscreen":"Full screen","closeDocument":"Close document","selectDocument":"Select document","scripts":"Scripts","autoPreview":"Live preview","device":"Preview size"},"modes":{"edit":"Edit","split":"Split","preview":"Preview"},"devices":{"desktop":"Desktop","tablet":"Tablet","mobile":"Mobile","custom":"Custom","customWidth":"Custom width"},"stats":{"chars":"chars","lines":"lines","tags":"tags","headings":"heading tags","images":"images","links":"links","position":"Ln {line}, Col {column}","syncing":"syncing"},"diagnostics":{"title":"Diagnostics","console":"Console","emptyConsole":"Run scripts to see console output here.","scriptsDisabled":"Scripts are off","manualRun":"Scripts run only when you press Run."},"urlImport":{"title":"Import from URL","description":"Import an HTML or plain text page into this browser workspace. The server does not save the page content.","label":"Page URL","placeholder":"https://example.com/page.html","confirm":"Import","cancel":"Cancel"},"toasts":{"imported":"HTML imported","urlImported":"URL imported","urlImportFailed":"Unable to import URL","unsupportedFile":"Only .html, .htm, and .txt files up to 1 MiB can be imported","importFailed":"Import failed","downloaded":"HTML downloaded","sourceCopied":"HTML source copied","copyFailed":"Copy failed","formatted":"HTML formatted","formatFailed":"Unable to format HTML","minified":"HTML minified","minifyFailed":"Unable to minify HTML","sampleLoaded":"Sample loaded","previewUpdated":"Preview updated","fullscreenFailed":"Full screen is unavailable","shareCreated":"Share link created","shareFailed":"Share failed","shareLoaded":"Shared HTML loaded into the editor","shareLoadFailed":"Unable to load shared HTML into the editor","shareSyncFailed":"Unable to sync the shared HTML"},"share":{"title":"Share link created","description":"Visitors can open the link in read-only mode using the access password. Save the delete token if you need to remove the share before it expires.","url":"Share URL","accessPassword":"Access password","deleteToken":"Delete token","copied":"Copied","copyFailed":"Copy failed"},"shareSettings":{"title":"Share this HTML","description":"Create a read-only preview link protected by an access password. Edits in this workspace can update the same share until it expires.","password":"Access password","regenerate":"Regenerate password","expires":"Link expires after","create":"Create share","cancel":"Cancel","expiresOptions":{"10":"10 min","1440":"1 day","4320":"3 days","43200":"30 days"}},"landing":{"title":"Online HTML Viewer with Sandboxed Preview","lead":"Paste HTML, import a file, or fetch a URL, then preview the result in a sandboxed iframe. HTML Viewer keeps your work local by default and uploads content only when you create a share link.","useCasesTitle":"Common use cases","faqTitle":"FAQ","features":[{"title":"Local-first editing","text":"Formatting, minifying, previewing, copying, and downloading happen in your browser. Nothing is uploaded unless you explicitly share."},{"title":"Controlled scripts","text":"JavaScript is off by default. When enabled, scripts run only after you press Run, so generated snippets do not execute repeatedly while you type."}