All tools run 100% locally in browser • Zero upload • Maximum security
100% Local • No Upload • Maximum Privacy
Professional offline tools: Offline Photo Editor, Bulk Image Resizer, PDF Editor, Compressor & Watermark. Everything runs in your browser. Your files never leave your computer.
Offline Image Resizer
Completely offline bulk image resizing. Maintain aspect ratio, live preview, and one-click ZIP download.
Recommended
Merge multiple PDFs, drag to reorder pages, delete pages, insert blank pages. Fully functional offline PDF editor.
Offline Compressor
Fully offline PDF compression. Adjust scale and quality while preserving original orientation.
MP4 ↔ WMV
離線影片轉換工具。支援 MP4、WMV、WebM、MOV 並可自訂解像度。使用 FFmpeg.wasm，完全本地處理。
精準時間剪裁
精準影片剪裁工具。可按開始和結束時間精確剪片，使用 FFmpeg.wasm。支援可拖動播放頭的完整時間軸。100% 離線，無需上傳。
HEIC • JPG • PNG • WebP
專為 iPhone HEIC 相片設計，可轉換為 JPG、PNG 或 WebP。支援批量處理，一鍵打包 ZIP 下載。完全本地運行，零上傳。
文字水印
Add custom text watermarks with adjustable opacity, position, size and color. Live preview, batch processing and ZIP download. 100% offline with maximum privacy.
進階編輯器
Powerful single-image editor. Adjust brightness, contrast, saturation, apply filters, rotate, flip, add text overlay. Everything runs 100% locally with live preview.
In a world of data breaches, AI scraping, and increasing privacy concerns, keeping your files local has never been more important.
Your images and PDFs never leave your computer. No servers, no logs, no risk of data leaks or AI training on your files.
Process hundreds of images or compress large PDFs in seconds. No upload queues, no daily limits, no file size caps.
No internet required. Perfect for travel, sensitive work environments, or when you need reliable tools anywhere.
No sign-up, no watermarks, no hidden fees. Single HTML files you can save and use forever — even offline.
Quickly batch resize images for websites, optimize assets, and prepare visuals without uploading client work to third parties.
Resize and prepare large batches of photos for social media, portfolios, or client delivery — all while keeping full control of your originals.
Lawyers, accountants, researchers, and consultants who handle sensitive documents and cannot risk uploading to cloud services.
People tired of online tools that limit usage, show ads, or require accounts. Simple, private, and yours to keep.
Yes. Everything runs using JavaScript directly in your browser. Your images and PDFs never leave your computer.
Yes. The Offline Bulk Image Resizer supports uploading many images at once, batch processing them, and downloading as a ZIP file.
Yes. It can significantly reduce PDF size while keeping good quality and original orientation.
Yes! The page supports both English and Traditional Chinese. All processing happens locally.
Disclaimer: These tools run entirely in your browser. We are not responsible for any data loss, file corruption, or any damages resulting from the use of this website and its tools.