Detail reconstruction
AI rebuilds edges and texture as it enlarges — not the soft stretch of plain interpolation.
AI Image Upscaler Increase image resolution up to 4K
Upscale small images right here — AI reconstructs detail as it enlarges, crisp up to 4K.
Target resolution
Upscale Image
Sign in to start upscaling. Watermark-free exports on paid plans.
Drag the handle to compare before and after.
How do I increase the resolution of an image?
Upload the image above, pick a target resolution — 1080p, 2K, or 4K — and click Upscale Image. AI super-resolution reconstructs detail as it enlarges, so the result stays crisp instead of going soft like plain interpolation.
Is the photo the right size but poor quality? Use the image enhancer instead
Why upscale with AI
Enlarging is easy — staying sharp is the hard part.
Up to 4K, print-ready
Full 300 DPI at A4, sharp at A3 viewing distance — posters, frames, portfolios.
Upscale AI-generated images
Take a 1K generation from any Renoise model to 4K for delivery — one canvas, no exports.
Batch up to 10 images
Credits-based with no daily caps — a whole listing set or asset library in one run.
Upscale an image in 3 steps
From a small file to a crisp 2K or 4K version.
- Step 1
Upload your images
Drop up to 10 small images into the uploader at the top of this page.
- Step 2
Pick a target resolution
Choose 1080p, 2K, or 4K — pick by where the image will live: screen, shop listing, or print.
- Step 3
Compare and download
Each image processes in under a minute. Check the detail at full size, then download.
AI upscaling vs traditional interpolation
Both make an image larger — they differ in what fills the new pixels. Honest trade-off: AI reconstructs plausible detail, which is usually what a print or listing needs, but it is a reconstruction, not the original capture.
| What matters | AI upscaling (this page) (Recommended) | Interpolation (e.g. photo editors) |
|---|---|---|
| Sharpness when enlarged | Crisp — edges rebuilt | Soft — pixels stretched |
| Texture and fine detail | Reconstructed from context | Blurred with the rest |
| Faithfulness | Plausible detail, verify at full size | Faithful but soft |
| Best for | Print, listings, wallpapers, AI art | Tiny size bumps |
What upscaling looks like
Small originals taken to print-ready sizes — detail reconstructed, framing untouched.
Portrait
A small portrait enlarged with clean edges and natural skin texture.
Photo to print size
A phone shot taken up to a size that prints cleanly.
Landscape to 4K
A scenic shot upscaled to 4K for a large display.
Product shot
A listing photo enlarged past marketplace minimums without going soft.
What resolution do I actually need?
Pick the target by where the image will live, not by "more is better". For screens: 1080p covers social posts and most web pages; 2K covers large hero images and high-density displays. For print, the rule of thumb is 300 DPI: a 4K image (about 3840 pixels on the long edge) covers an A4 print at full 300 DPI and still looks sharp at A3 from a normal viewing distance; 2K covers A5 comfortably; 1080p is postcard territory. Marketplaces have their own floors — many listing platforms want at least 1000–1600 pixels on the long edge, which a 1080p or 2K upscale clears comfortably.
Two practical notes. First, upscaling multiplies pixels, not information — the AI reconstructs detail that plausibly fits, which is what a print needs, but check faces and fine text at full size before sending anything to a printer. Second, going far beyond the size you need wastes nothing but adds nothing either: a 4K file posted to social media gets recompressed back down. Match the target to the destination, and re-run at a higher setting only when the job actually changes.
Your images stay yours
What happens to an uploaded image — the answer most upscaler tools avoid.
Nothing uploads before sign-in
Picking a file only previews it on your device. Not one byte is stored until you sign in and click generate.
Private, deduplicated storage
Uploads land in your private library, never a public gallery, and re-running the same image stores nothing new.
Deletable any time
Remove uploads and results from your library whenever you want.
Standalone upscaler tools vs Renoise
Typical online upscaler
- Capped at 2× or small pixel limits
- Daily limits, queues, file-size ceilings
- No answer to where your image goes
- Upscaling is the end of the road
- No path from image to video
Renoise
- Straight to a 1080p / 2K / 4K target, right on this page
- Batch 10 images, billed per image, no daily caps
- Private storage, deletable, nothing stored before sign-in
- Restyle or animate the result on the same canvas
- Upscale AI generations from every Renoise model
Upscale your image to 4K
Pick a target resolution and compare before and after.
Frequently asked questions
1.How does an AI image upscaler work?
A super-resolution model enlarges the image to your target resolution and reconstructs edges and texture from context as it goes, so the result stays crisp. Plain interpolation only stretches existing pixels, which is why it looks soft.
2.What is the maximum resolution?
4K — about 3840 pixels on the long edge. That covers an A4 print at full 300 DPI and looks sharp at A3 from a normal viewing distance. Target 2K or 1080p when the destination is a screen or a marketplace listing.
3.Is the added detail real?
It is reconstructed — the model fills in detail that plausibly fits the surrounding image, which is what prints and listings need. It is not the original capture, so check faces and fine text at full size before you ship the result.
4.What resolution do I need for printing?
At the standard 300 DPI: 4K fully covers A4 and holds up at A3 from a normal viewing distance, 2K covers A5, and 1080p suits postcards and small frames. When in doubt, upscale to 4K and let the print shop downsample.
5.Can I upscale multiple images at once?
Yes. Upload up to 10 images and they process one after another, billed per image with no daily caps — a listing set or asset folder upscales in a single run.
6.Can I upscale AI-generated images?
Yes — it is one of the most common jobs here. Generate at 1K with any Renoise image model, then upscale to 4K for delivery. The image stays on the same canvas the whole way.
7.What image formats and sizes are supported?
JPG, PNG, and WebP, up to 20MB per image and up to 10 images per run. Results export watermark-free on paid plans.
By Leon, RenoiseLast reviewed