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Upscale image

Increase image resolution with local AI, compare quality in one slider, and export in one click.

Guide: resize image for web

Scroll down for tips, limits, and FAQs

AI upscale workflow for low-resolution images

Pillar guide: How to Resize Images for Web Performance and Better UX

Upscaling can improve perceived sharpness for low-resolution assets, but it works best when the source is reasonably clean. Heavy blur, compression artifacts, or tiny screenshots still limit final quality.

This tool runs local AI in your browser. Your image stays on device while the model increases detail and resolution.

Use 2x as your default. Move to 4x only when you truly need larger dimensions, then compress for delivery because file size grows quickly.

Upscaling is different from resizing: it uses super-resolution models to reconstruct detail while increasing pixel count. Results depend heavily on source quality and subject type.

This tool runs local AI in your browser and keeps files on-device. You can choose 2x or 4x scale, compare before and after with a slider, then export to PNG, JPG, or WebP.

For most web and social cases, start with 2x and only move to 4x when a channel needs larger dimensions. Higher factors increase processing time and output size quickly.

Upscale workflow

  1. Upload an image in common formats (JPG, PNG, WebP, HEIC, and others).
  2. Choose scale factor (2x or 4x) and output format.
  3. Run the upscale process and review the before/after divider on key details like text edges and faces.
  4. Download the upscaled output at its new native dimensions.

Common use cases

  • Improve old screenshots or low-res product images before publishing.
  • Prepare assets for larger placements when the original is too small.
  • Recover clarity on AI-generated images that need cleaner edges.

Practical tips

  • Use 2x first. It usually delivers the best quality-to-time ratio.
  • If the source is heavily blurry or over-compressed, pair upscale with light sharpening and contrast tweaks.
  • After upscaling, compress for delivery to control file size.

Limitations to know

  • AI upscale improves perceived detail but cannot recover information that never existed in the source.
  • 4x can be slow on low-memory devices; runtime automatically falls back to a safer compute path when needed.
  • Output HEIC export is not currently supported; export is PNG/JPG/WebP.

Related guides

Frequently asked questions

Is AI upscale the same as normal resize?

No. Resize interpolates pixels mathematically, while AI upscale predicts higher-frequency detail. AI usually looks better on low-res sources, especially at 2x.

Can I upscale HEIC photos directly?

Yes for input. Upload HEIC and process locally in the browser. Export format is PNG, JPG, or WebP.

When should I choose 4x instead of 2x?

Use 4x only when you truly need that larger dimension. For many web uses, 2x already gives enough detail with lower processing cost.