Trình Nâng Cao Hình Ảnh — Nâng Lên 4K

Upscale and enhance images 2x or 4x. Free, private, browser-based.

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Kéo & thả ảnh vào đây, hoặc duyệt tệp

Supports JPEG, PNG, WebP

Riêng tư 100%

All upscaling happens directly in your browser using the Canvas API. Your images are never uploaded to any server — even the AI models will run locally on your device.

What is image upscaling?

Image upscaling (also called image enlargement or super-resolution) increases the pixel dimensions of an image while attempting to preserve or enhance visual quality. Unlike simple stretching, our upscaler uses high-quality Lanczos interpolation combined with an unsharp mask filter to produce crisp, detailed results at 2x or 4x the original resolution.

Khi nào nên phóng to ảnh

Upscale images for large-format printing (posters, banners, photo books), social media profile pictures that need higher resolution, restoring old or small photos, or creating high-DPI assets for Retina/HiDPI displays. Going from 1080p to 4K? Use our 2x upscaler.

Tiêu chuẩn so với AI Tăng cường

The Standard mode uses your browser's native high-quality image scaling with additional sharpening — it's fast, works offline, and produces excellent results for most use cases. AI Enhanced mode (coming soon) will use neural network models via TensorFlow.js running entirely in your browser for state-of-the-art super-resolution results.