Image Upscaler
Increase image dimensions with high-quality browser interpolation, optional sharpening, preview, and PNG or JPG output.
Private browser processing
Your selected files stay on this device and are not uploaded for conversion.
Useful output controls
Choose the settings that affect compatibility, resolution, quality, or page layout.
Direct or ZIP download
Save one result directly or receive multiple output files in a valid ZIP archive.
仕組み
- 1
Choose your file
Select the supported image or document from your device.
- 2
Set the output
Adjust the available quality, page, scale, or layout controls.
- 3
Convert and download
Run the browser tool and save the generated result.
What browser upscaling can do
Upscaling increases pixel dimensions and smooths the enlarged result. Sharpening can improve edge definition, but enlargement cannot recreate fine detail missing from the original. This tool uses deterministic browser resampling rather than generative enhancement.
よくある質問
Does upscaling create new detail?
No. It interpolates existing pixels and can sharpen edges, but it cannot recover detail absent from the source.
Why is there a pixel limit?
Very large canvases can exhaust browser memory, so the tool blocks unsafe output sizes.
私の画像はアップロードされていますか?
No. The enlargement runs in your browser.
Image Upscaler last reviewed: Sep 21, 2026.