How it works
Complete the job in three clear steps
- Choose a JPG, PNG, or WebP image.
- Set the available options and create a 2× PNG.
- Review and download or copy the result before leaving the page.
Private Lucaden images & media tool
AI Image Upscaler
Upscale an image 2× with the local ESRGAN Slim model and download a higher-resolution PNG.
Free to use Your source content is processed in this browser and is not uploaded to Lucaden.
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Important
Check the result before relying on it
Keep an untouched copy of important source files. Browser processing depends on available device memory, and you should inspect every downloaded result before deleting the original.
Practical details
What this Lucaden tool does
UpscalerJS runs an ESRGAN neural network through TensorFlow.js in the browser. It predicts detail rather than recovering information that was never captured, so inspect faces and text carefully.
The original stays unchanged; Lucaden creates a separate result in browser memory.
Included capabilities
- 2× super-resolution
- ESRGAN Slim model
- Tiled browser processing
- Progress reporting
Useful for
- Enlarge small artwork
- Improve presentation assets
- Upscale old web images
- Create higher-resolution drafts
Questions
About this tool
Does upscaling restore true detail?
No. The model predicts plausible detail. It cannot recover exact text or features that are absent from the source.
Why can it take time?
Neural image inference is computationally intensive and performance depends on image size, browser, GPU, and available memory.
Open-source foundations
Built transparently
Lucaden documents its standards sources, architectural references, and permissive runtime dependencies while keeping this workspace consistent with the Lucaden interface.