How it works
添加 JPG、PNG、WebP 或 GIF；每张图成为 PDF 一页。ローカル组装可拖拽排序。
在ローカル将多张画像合并为一个 PDF。
🔒 100% Secure & Local: Your documents are processed entirely in your browser and never uploaded to any server.
ここにファイルをドラッグ＆ドロップ
JPG, PNG, WebP, or GIF. Each image becomes one page. Up to 80 MB · 40 files / batch
添加 JPG、PNG、WebP 或 GIF；每张图成为 PDF 一页。ローカル组装可拖拽排序。
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).
添加 JPG、PNG、WebP 或 GIF；每张图成为 PDF 一页。ローカル组装可拖拽排序。
图中文字不可搜索。过长列表可能占满内存。 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.