How it works
粘贴テキスト、在 Web Worker 中推理。首次访问后模型缓存。 该工具需首次一次性ダウンロード基于 Transformers.js 的ローカル处理引擎（Web Worker）。视网速可能需要片刻、但确保零服务器アップロード与完全隐私。
正/负/中性评分与置信度。
Text to analyze
粘贴テキスト、在 Web Worker 中推理。首次访问后模型缓存。 该工具需首次一次性ダウンロード基于 Transformers.js 的ローカル处理引擎（Web Worker）。视网速可能需要片刻、但确保零服务器アップロード与完全隐私。
Conversions run in your tab with JavaScript — no desktop app required.
Files stay on your device during processing. We do not receive your uploads.
Heavy codecs and AI models run locally via Web Workers and WASM (FFmpeg.wasm, Transformers.js).
粘贴テキスト、在 Web Worker 中推理。首次访问后模型缓存。 该工具需首次一次性ダウンロード基于 Transformers.js 的ローカル处理引擎（Web Worker）。视网速可能需要片刻、但确保零服务器アップロード与完全隐私。
准确度因语言而异；长输入可能截断。 处理 100% 在ブラウザ内オフラインで行われます——ファイルから出ることはありません您的设备。
Yes. This tool is free convert online with no signup. Processing stays in your browser — no uploads.
You control quality settings. Choose higher quality for no quality loss when converting online.
Every conversion runs inside your browser tab using JavaScript and Web Workers. There is no background server queue and no account is required for core tools.
Your files are never uploaded to FreeConvertKit for processing. Originals, previews, and exports stay on your device unless you choose to download or share them yourself.
When codecs or AI models are needed, WebAssembly modules such as FFmpeg.wasm and Transformers.js execute locally — giving you desktop-class power with absolute file privacy.