Print preparation · 12 free credits on sign-up

Upscale an image for printing

A phone photo that looks fine on screen falls apart on paper. PixelUp enlarges it with real detail so it prints sharp at A4, A3 or canvas size.

Choose a photo or drop it here

JPG, PNG, WEBP or HEIC up to 20 MB · 6 credits per run · Deleted after 24 hours

4.4 on the App Store, 64 ratings Never used for AI training About 15 seconds per photo

Smiling woman with curly hair and freckles after enhancement, every freckle sharp

The same portrait before, a small blurry file with no detail

BeforeAfter

Small source, 4K result. Drag to compare.

Pixels per inch, without the maths

Printers want about 300 pixels per inch. A 4K file covers an A3 print at that density, and PixelUp gets any photo to 4K.

Enough pixels for the print size

A 1,200-pixel photo prints well at 10 cm. The same photo at 4K prints at 35 cm on the long edge at full quality, and larger at a normal viewing distance.

2K for A4 and 20×30 cm
4K for A3, posters and canvas

BeforeAfter

Detail that survives paper

Paper is less forgiving than a screen; soft edges that looked fine online show as blur in print. The pass sharpens edges and rebuilds texture at the output size.

Faces, fabric and foliage hold up
No artificial sharpening halos

Bearded man in a black hat after PixelUp enhancement, sharp beard and knit detail

The same portrait before, a tiny low-resolution file that looks soft and blocky

BeforeAfter

Noise and banding cleaned

Low-light grain and gradient banding become obvious at print size. Both are removed in the same run, which also helps the print lab's own processing.

Smooth skies and skin tones
JPG at top quality, or PNG

Snowy hike with the second skier erased, clean snow where they stood

Snowy hike with a second skier in the background painted over for removal

BeforeAfter

How to prepare a photo for printing

Three steps, no software to install.

Upload the best copy you have

The original file from the phone, not a chat-app copy. JPG, PNG or HEIC up to 20 MB.

Check the free preview

In about 15 seconds you see the enhanced version. Drag the handle over faces and edges at 100 percent.

Download 2K or 4K

2K is 10 credits and prints A4; 4K is 16 credits and prints A3 or canvas. Send the file to the lab as is.

Questions people ask before uploading

Is this free?

Sign in with your email and get 12 free credits, enough for two runs. After that each run costs 6 credits at 1K, 10 at 2K, 16 at 4K, with the download included.

What size print can I make from 4K?

At 300 pixels per inch, about 35 cm on the long edge, which is A3. For canvas and posters viewed from a distance, 150 pixels per inch is plenty, which takes 4K to about 70 cm.

Will the print lab accept the file?

Yes. Download as JPG for most labs or PNG if they ask for it. The file carries no watermark.

Can it fix a photo that is slightly out of focus?

Mild softness, yes. Heavy motion blur is reduced but not removed; the preview shows you honestly before you buy a size.

Is the aspect ratio changed?

No. The photo keeps its proportions. Crop to the print ratio in your phone editor before uploading if you need a specific shape.

What sizes can I download?

1K, 2K or 4K on the long edge, as JPG or PNG. 4K is about 4096 pixels, enough for an A3 print.

More fixes for the same photo

PixelUp for iPhoneFree on the App Store · 4.4 ★

The same fix, straight from your camera roll

Same AI, same credits. The iPhone app adds the tools that need a finger on the screen:

Color room: manual edits, LUTs, curves and filters
AI backgrounds from a text prompt
Save back to Photos in one tap

Download on theApp Store iOS 15 or later

BeforeErased

Get that photo on the wall

Prepare for print