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4K Converter AI-upscales images and short videos to 4K with clear credit costs.
4K Converter is a private online workbench that AI-upscales JPG/PNG/WebP images and short videos toward 4K, or converts formats, with an exact credit quote before each task. Video enhancement is for clips up to 10 seconds. Independently run bilingual EN/ZH web app. Image to 4K and Video to 4K use AI while keeping aspect ratio. Format tools change JPG/PNG/WebP or MP4/MOV/WebM/AVI/MKV without inventing detail. 100 starter credits valid for 30 days let you test the pipeline before spending anything, and every job shows its exact credit cost up front so there are no surprises. Uploaded and generated files expire automatically after 24 hours, so nothing lingers on the server. The interface is designed for quick, one-off utility work: drop a file in, pick an output target, confirm the quote, and download the result.
