Upscale Image to 4K Without Losing Quality
Enhance, sharpen, and upscale this type of image with local Canvas controls. Your source photo stays on your device.
Ready to prepare your file?
Open the interactive DocFlexi tool with this page's recommended output settings.
Official specifications
- Dimensions
- 3840 × 2160 px
- File size
- Up to 20,000 KB
- Output format
- PNG / JPEG / WebP
- Aspect ratio
- 16:9 or source ratio
- Country / region
- Global
How to use this tool
- Choose a photo, signature, PDF, or image from your device.
- Review the pre-configured dimensions or file-size target.
- Adjust the crop or conversion settings, then generate the output.
- Download the result and confirm it matches the receiving portal's current rules.
Requirements and practical guidelines
- Use a high-resolution source for the best 4K result.
- Select 4× only when the source has enough detail and your device has available memory.
- Use PNG when preserving graphic edges matters most.
Important: Application authorities can change specifications. Treat the official application notice as the final source of truth.
Why use DocFlexi for this requirement?
Unlike upload-based converters, DocFlexi uses browser APIs to process the file on your device. That makes it useful for identity photos, signatures, immigration documents, and marketplace assets that should not be sent to a third party. The generated download is created only after you choose to export it.
Frequently asked questions
Does 4× upscaling create new real detail?
Canvas resizing creates a larger, smoother image; it cannot recreate detail that was not present in the source.
Can I export 4K as WebP?
Yes. Choose WebP in the download format selector.