User Agent Batch Generator

Batch-generate real, valid User Agent strings, with support for multiple device types and format exports

Browser execution mode: Your data is processed in your browser and is not uploaded to the server.

Speed and Stability: Processing speed depends on your device and browser. For large batch work, the desktop version may be more stable.

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If the online tool fails to load or run, try the desktop tool.https://tools.yikeaigc.com/

Tool Usage

Return to old version

'; } async function copyOutput() { if (!state.records.length) return; state.outputText = formatOutput(collectSettings(), state.records); try { await navigator.clipboard.writeText(state.outputText); } catch (err) { var textarea = document.createElement('textarea'); textarea.value = state.outputText; textarea.style.position = 'fixed'; textarea.style.left = '-9999px'; document.body.appendChild(textarea); textarea.select(); document.execCommand('copy'); document.body.removeChild(textarea); } renderMessage('已复制全部结果。', 'success'); } function downloadOutput() { if (!state.records.length) return; var settings = collectSettings(); state.outputText = formatOutput(settings, state.records); var ext = { text: 'txt', json: 'json', csv: 'csv', xml: 'xml', table: 'html' }[settings.format] || 'txt'; var mime = { text: 'text/plain;charset=utf-8', json: 'application/json;charset=utf-8', csv: 'text/csv;charset=utf-8', xml: 'application/xml;charset=utf-8', table: 'text/html;charset=utf-8' }[settings.format] || 'text/plain;charset=utf-8'; downloadBlob(new Blob([state.outputText], { type: mime }), settings.fileName + '.' + ext); renderMessage('文件已生成并开始下载。', 'success'); } function clearResults() { state.records = []; state.outputText = ''; state.stats = createEmptyStats(); els.resultPanel.classList.remove('show'); els.preview.textContent = ''; setBusy(false); renderMessage('结果已清空。', 'success'); } function downloadBlob(blob, filename) { var url = URL.createObjectURL(blob); var link = document.createElement('a'); link.href = url; link.download = filename; document.body.appendChild(link); link.click(); document.body.removeChild(link); URL.revokeObjectURL(url); } function renderMessage(text, type, timeout) { els.message.textContent = text; els.message.className = 'ua-message show ' + (type || 'success'); window.clearTimeout(els.message._timer); els.message._timer = window.setTimeout(function () { els.message.classList.remove('show'); }, timeout || 3800); } function waitFrame() { return new Promise(function (resolve) { window.setTimeout(resolve, 0); }); } function weightedPick(items, weights) { var total = items.reduce(function (sum, item) { return sum + Math.max(0, weights[item] || 1); }, 0); var cursor = Math.random() * total; for (var i = 0; i < items.length; i++) { cursor -= Math.max(0, weights[items[i]] || 1); if (cursor <= 0) return items[i]; } return items[items.length - 1]; } function randomItem(items) { return items[Math.floor(Math.random() * items.length)]; } function randomInt(min, max) { return Math.floor(Math.random() * (max - min + 1)) + min; } function clamp(value, min, max) { return Math.max(min, Math.min(max, value)); } function sanitizeBaseName(value) { return String(value || 'user-agents') .replace(/[\\/:*?"<>|]+/g, '-') .replace(/\s+/g, '-') .replace(/^-+|-+$/g, '') .slice(0, 80) || 'user-agents'; } function csvCell(value) { return '"' + String(value == null ? '' : value).replace(/"/g, '""') + '"'; } function htmlEscape(value) { return String(value == null ? '' : value) .replace(/&/g, '&') .replace(//g, '>') .replace(/"/g, '"') .replace(/'/g, '''); } function xmlEscape(value) { return htmlEscape(value); } init(); })();

Instructions

Software Usage Instructions

Set basic parameters: Choose the generation quantity, output format, and export file name. Plain text, JSON, CSV, XML, and detailed table formats are supported.
Select common scenarios: Use presets such as search engine detection, crawler request pool, mobile testing, desktop browser testing, multi-device mix, or configure manually.
Select device types: Check desktop devices, mobile devices, tablets, smart TVs, game consoles, or search crawlers. Mixed generation across multiple types is supported.
Select browser types: Check browsers such as Chrome, Firefox, Safari, Edge, Opera, Samsung Browser, UC Browser, and Vivaldi.
Configure advanced options: Enable options such as non-duplicate generation, include old versions, include beta versions, random language/region, randomize by common proportions, and output analysis fields.
Save settings: Click “Save Settings” to keep the current configuration, making it easy to use the same parameters next time.
Start generation: After entering the “Generate & Export” step, click “Start Batch Generation”. The tool will display progress, statistics, and a preview of the first 20 items.
Copy or download: After generation is complete, you can copy all results or download the file in the selected format.

FAQ

A: They are suitable for website compatibility testing, mobile page debugging, log analysis sample construction, crawler request header rotation, search crawler identification testing, and other scenarios.

A: Plain text is suitable for direct pasting; JSON is suitable for program reading; CSV is suitable for spreadsheet analysis; XML is suitable for system integration; detailed tables are suitable for viewing fields such as browser, system, and device.

A: Enable “Generate only unique User Agents” to automatically remove duplicates. If the generation quantity is large, it is recommended to also add more device types and browser types to avoid too narrow a range of combinations.

A: Old versions are suitable for compatibility testing and historical log simulation; beta versions are suitable for testing tasks that need to cover version numbers such as Beta, Dev, and Canary.

A: This is usually because non-repeating generation is enabled and the filter range is narrow. You can add more device or browser types, or turn off the non-repeating option and generate again.

A: After enabling “Output analysis fields,” JSON, CSV, XML, and tables will include fields such as number, User Agent, browser, engine, operating system, device type, and language/region.