User-Agent Generator
User agent generator: create random UA for browsers and devices with custom and bulk for testing and crawling, with one-click copy, offline.
Cách sử dụng
Pick a browser and operating system to generate UA strings automatically.
Overview
User-Agent Generator is a code tool that User agent generator: create random UA for browsers and devices with custom and bulk for testing and crawling, with one-click copy, offline. It runs 100% in your browser with no upload, so you get instant results with privacy. Whether you need a quick answer or batch processing with precise control, you can enter, validate and export in seconds. The UI is responsive on mobile, tablet and desktop and supports one-click copy.
Use cases
- Format and validate JSON
- Test regex with highlights
- Escape code for string literals
- Convert between CSV/JSON/Markdown
- Use it to cross-check “User-Agent、UA生成” in reports, docs or APIs to avoid manual conversion errors
How to use
- 1 Paste code/data
- 2 Pick action and options
- 3 Fix highlighted errors
- 4 Copy or export
Highlights
- Local & private: processing stays in your browser
- Live validation with tolerant parsing
- One-click copy and export for docs, code or sheets
- Batch and offline support under poor network
Notes
- Strict JSON disallows comments/trailing commas
- Watch greedy vs lazy regex
- Disable live validation for large files
FAQ
Offline?
Yes, parsing is local.
Why invalid?
Trailing commas, single quotes or BOM often cause it.
How is User-Agent Generator different?
It runs locally with a focus on speed and privacy, plus tolerant parsing for “User-Agent、UA生成” and one-click copy for reuse.
Can I use results in official reports?
Use it as a working draft and cross-check with authoritative sources; keep the exported log and parameters for traceability.
Tip：Tip: Bookmark this page or pin the tab; find related tools via categories and search (convert → calculate → export).
All calculations run locally in your browser; nothing is uploaded.