AI Image Upscaler

AI Image Upscaler

Enhance and upscale any photo to HD or 4K with AI — recover detail, sharpen edges, and fix low-resolution images in one click. Powered by 5 Topaz AI models.

See the difference

Before & after

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Enhanced
4K Enhanced
Original
Original
Features

What you can do

Convert photos to HD and 4K in one click

Pick 2× or 4× and the AI reconstructs missing pixels, sharpens edges, and rebuilds fine texture — turning photos from phones, screenshots, or older cameras into crisp high-resolution images. Upscale a photo now.

5 specialized Topaz AI models

Standard V2 handles everyday photos. Low Resolution V2 rescues tiny or heavily compressed images. High Fidelity V2 preserves maximum detail. CGI is tuned for digital art and game assets. Text Refine keeps lettering sharp in screenshots and posters. Switch models to match the image.

Automatic face enhancement

Portraits get dedicated treatment — the AI restores eyes, skin texture, and hair without the plastic, over-smoothed look. Pair it with the denoise and sharpen controls to clean up grain from low-light or high-ISO shots.

Enlarge without the blur

A normal resize stretches the same pixels and softens everything. This image upscaler generates new detail instead, so enlarged photos stay sharp — no jagged edges, no mushy textures, no halos around contrast lines.

Fix low-resolution and old photos

Scanned prints, early-2000s camera shots, and thumbnail-sized product images come back usable. Low Resolution V2 is built for exactly this — recovering structure from sources most tools can't enlarge cleanly.

No install — runs in your browser

Upload JPG, PNG, TIFF, WebP, or AVIF; download PNG or JPEG. Everything renders on cloud GPUs, so it works on any device — Mac, Windows, Chromebook, or tablet. For footage instead of stills, use the video upscaler.

Get started

How to use

1

Upload your image

Drag and drop or browse to add a JPG, PNG, TIFF, WebP, or AVIF file. Upload several at once to process a batch.

2

Choose a model and scale

Pick one of 5 Topaz models, set 2× or 4×, and optionally toggle face enhancement, sharpen, and denoise. Subject detection focuses the AI on the foreground or background.

3

Download your high-res image

The AI processes in the cloud — no GPU needed on your end. Download the result as PNG or JPEG, ready for print, web, or store listings.

Who it's for

Use cases

Sharper e-commerce product photos

Supplier images and marketplace thumbnails are often too small for a clean storefront. Upscale them to crisp, zoomable product shots that meet Amazon, Shopify, and Etsy resolution requirements.

Restore old and scanned photos

Bring family prints, archival scans, and faded snapshots up to modern resolution. Low Resolution V2 recovers detail that a simple enlargement turns to mush.

Print and large-format output

Web images at 72 DPI fall apart on posters, banners, and packaging. Upscale to the pixel dimensions you need for sharp 300-DPI print without re-shooting.

Enhance AI-generated images

Outputs from the AI image generator sometimes render soft or at a capped resolution. Run them through the upscaler to add detail and reach print-ready size.

Compare

Sunra vs. Photoshop and desktop upscalers

Sunra AI UpscalerPhotoshop / desktop apps
Setup requiredNone — works in your browserInstall Photoshop or a desktop app
AI models5 specialized Topaz modelsOne general 'Preserve Details' filter
Skill requiredOne click, nothing to learnManual layers, filters, and settings
Face enhancementAutomatic, built inManual retouching by hand
PriceFree daily credits, pay as you go$20.99/mo or a $199+ license
PlatformMac, Windows, Chromebook, tabletDesktop only
Community

Loved by creators worldwide

Join thousands of creators, agencies, and brands who use Sunra every day.

My Etsy listings finally look professional

My supplier only sends 600px product shots, which looked terrible blown up on my store. I upscaled the whole catalog to 4× with Standard V2 in an afternoon. Conversions went up the next week.

HB
Hannah Brooks
Etsy shop owner

Rescued my grandparents' wedding photo

The only copy was a tiny scan, badly pixelated. Low Resolution V2 brought back detail I genuinely didn't think was recoverable — my mom teared up. Printed it at A3 for her birthday.

DM
Diego Martín
Personal project

Text Refine kept my poster legible

I upscale event posters for large-format print. Most upscalers smear the typography, but Text Refine kept every letter crisp at 4×. It's the detail that made me stop using my old desktop tool.

AY
Aiko Yamamoto
Graphic Designer

Perfect for upscaling my AI art

My image models cap out at 1024px. Running outputs through the CGI model adds clean detail without inventing weird textures, so my prints look intentional instead of generated.

ML
Marcus Lee
Digital artist

Faces come out natural, not waxy

I retouch portraits for a small studio. The automatic face enhancement is the first one I've used that doesn't smooth skin into plastic. It saves me a real round of manual cleanup.

PN
Priya Nair
Portrait retoucher

Free credits sold me before I paid

I tested it on a dozen real estate photos with the free daily credits before committing. The quality jump on interior shots was obvious, so upgrading was easy. No desktop license to maintain anymore.

TW
Tom Whitfield
Real estate marketer
FAQ

Questions & answers

Is the AI image upscaler free?
Yes. Every Sunra account gets free daily credits — enough to upscale several images at no cost, with no credit card to sign up. For higher volume, paid plans add more credits and priority processing.
How do I upscale an image to 4K?
Open the tool, upload your photo, choose a Topaz model and a 2× or 4× scale factor, then download the result. The AI rebuilds detail as it enlarges, so you can upscale your image and keep it sharp at high resolution.
How do I convert a photo to HD?
Upload your image, pick a Topaz model, and choose 2× or 4× — the AI rebuilds detail as it enlarges, converting low-resolution photos into sharp HD and 4K. It works as a photo enhancer and HD converter in one: make your photo HD in a click, no app to install.
Can I upscale an image without losing quality?
Yes — that's the difference between AI upscaling and a plain resize. Instead of stretching existing pixels, the AI generates new detail to match, so edges and textures stay crisp. Choose High Fidelity V2 when preserving the most detail matters.
What is the best AI image upscaler?
It depends on the image — a portrait, a screenshot full of text, and a piece of CG art each enhance best with a different model. Sunra lets you try all five models on the same upload, so you can compare results before downloading.
How is this different from upscaling in Photoshop?
Photoshop's Preserve Details enlargement is a single general algorithm you tune by hand. Sunra runs 5 purpose-built Topaz models with automatic face enhancement, denoise, and sharpen — no layers or settings to learn, and nothing to install. You can open the upscaler and get a result in one click.
What image formats and sizes are supported?
Input: JPG, PNG, TIFF, WebP, and AVIF. Output: PNG or JPEG. You can upscale 2× or 4×, with optional face enhancement, sharpen, and denoise. To enhance footage instead of stills, upscale a video.

Ready to create?

Start with free daily credits. No credit card required.