Image Upscaler & Enhancer
Upscale JPG, PNG, WebP, and BMP images by 2x, 3x, or 4x with photo, illustration, text, and standard profiles, strength control, preview, and flexible export.
Options
This tool is still being fine-tuned, so you may run into the odd error. Spotted one? Let us know so we can fix it.
What is Image Upscaler & Enhancer?
Upscale JPG, PNG, WebP, and BMP images online by up to 4x. Enhance photos, illustrations, text, and screenshots and export PNG, JPG, or WebP.
How to upscale and enhance an image
Enlarge an image by 2x, 3x, or 4x with high-quality resampling and content-aware enhancement profiles.
Choose the right profile
Photo applies gentle noise cleanup, color, contrast, and sharpening. Illustration strengthens clean edges and color. Text & screenshot prioritizes contrast and crisp lettering. Standard only enlarges with Lanczos resampling.
Choose an export format
PNG is best for transparency and lossless graphics, JPG is compact for photos, and WebP balances file size with image quality. Quality affects compression, not output dimensions.
How to use it
- Upload an image up to 20 MB.
- Choose 2x, 3x, or 4x enlargement and a profile.
- Adjust enhancement strength, format, and quality.
- Upscale, compare the preview, and download the result.
Processed temporarily on our server
The image is sent to a ProntoUso server for high-resolution resizing and enhancement. It is used only for that request; temporary data and the result are not stored or logged.
Frequently Asked Questions
Does this invent missing detail with AI?
No. It uses high-quality Lanczos resampling and deterministic enhancement filters, so it improves presentation without claiming to reconstruct details that were never present.
Why can a 4x enlargement be rejected?
Output is limited to 12,000 pixels per side and 50 megapixels to keep processing reliable.
Can it preserve transparency?
Yes. Export as PNG or WebP to preserve transparency. JPG fills transparent areas with white because JPEG has no alpha channel.