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Upscale images online · no watermark

Upscale an image to 2×, 4× or 4K online

Make a small picture bigger without the blur of a normal resize. Pick 2K, 4K, 8K or an exact megapixel size and the AI rebuilds edges and texture as it enlarges.

Add an imageJPG, PNG or WEBP up to 25 MB · opens the free toolUpscale my image
No photo? Try one:
  • 2K, 4K, 8K or up to 128 MP
  • No watermark
  • PNG, JPG or WEBP out
  • 25 free credits
Close-up portrait of a young woman with freckles and dark curly hair — original 300 px JPEG
Close-up portrait of a young woman with freckles and dark curly hair — after Image Upscaler
BEFORE · 300 px JPEGAFTER · 4K · 3664 × 4579

Image Upscaler300 px JPEG → 4K · 3664 × 4579

Try this photo
  • Real-ESRGAN
  • Image Upscaler 2K · 4K · 8K
  • Kenerate Upscale · 128 MP
  • Ultimate Upscaler
  • Clarity Pro
  • Phota Enhance
  • Recraft Creative

Quick answer

Updated

To upscale an image online, open Kenerate's image upscaler, add the picture and pick a size: Real-ESRGAN enlarges and sharpens in one pass, Image Upscaler outputs 2K, 4K or 8K, and Kenerate Upscale hits an exact size up to 128 MP. It takes 15–80 seconds, new accounts get 25 free credits, and there is no watermark.

2× / 4×
2× = 4× the pixels · 4× = 16×
4K
Image Upscaler, any input size
Biggest
8K, or up to 128 MP
Time
About 15–80 seconds

Real results

See what it does to real photos

Every slider is a real Kenerate output from the bad input on the left. Drag to compare, then try the same photo.

  1. Close-up portrait of a young woman with freckles and dark curly hair — before
    Close-up portrait of a young woman with freckles and dark curly hair — after
    BeforeAfter

    01Low resolution

    A 300-pixel portrait, now 4K

    Skin, lashes and curls come back sharp — and it's still the same person. A faithful upscale, not a new face.

    Image Upscaler · 300 px JPEG → 4K · 3664 × 4579

    Try it now
  2. Turquoise alpine lake below snowy mountains with a wooden cabin — before
    Turquoise alpine lake below snowy mountains with a wooden cabin — after
    BeforeAfter

    02Upscale to 4K

    A tiny landscape, wallpaper-sized

    480 px in, 5461 × 3072 out. Trees, snow and the cabin sharpen instead of smearing.

    Image Upscaler · 480 px JPEG → 4K · 5461 × 3072

    Try it now
  3. White leather sneaker with orange details on a concrete floor — before
    White leather sneaker with orange details on a concrete floor — after
    BeforeAfter

    03Product photos

    Supplier thumbnails, listing-ready

    Stitching, leather grain and the orange trim rebuilt from a 320 px image.

    Real-ESRGAN · 320 px JPEG → 2048 px

    Try it now
  4. Cafe chalkboard menu listing coffee drinks and prices — before
    Cafe chalkboard menu listing coffee drinks and prices — after
    BeforeAfter

    04Text in images

    Chalk lettering at 4K

    A 360 px menu photo made poster-sharp — the letters stay the letters.

    Image Upscaler · 360 px JPEG → 4K · 4730 × 3547

    Try it now

Gallery

More real results

Every image below is a real Kenerate output. Filter by problem, then open any one to compare before and after.

How it works

How to upscale an image online

Upload, choose a size, download. The output size is shown before you run it.

  1. Open the upscaler and add your image

    Go to kenerateai.com/app/tool/image-upscale and upload a JPG, PNG or WEBP up to 25 MB.

  2. Choose how big

    Real-ESRGAN enlarges and sharpens in one pass. For a set size pick Image Upscaler → 2K, 4K or 8K, or Kenerate Upscale → 4 to 128 megapixels; the tool shows the exact pixel size your image will come out at.

  3. Download

    Download PNG, JPG or WEBP with no watermark, or open it in Edit Studio.

Step by step

How do I upscale an image without losing quality?

The full walk-through, with the exact menus in the Kenerate tool.

  1. Step 1: Open the upscaler and add your image

    Go to kenerateai.com/app/tool/image-upscale and upload a JPG, PNG or WEBP up to 25 MB.

  2. Step 2: Choose how big

    Real-ESRGAN enlarges and sharpens in one pass. For a set size pick Image Upscaler → 2K, 4K or 8K, or Kenerate Upscale → 4 to 128 megapixels; the tool shows the exact pixel size your image will come out at.

    EngineImage Upscaler4K

    Tip: For photos you plan to print, pick Kenerate Upscale and a megapixel size — the tool shows the output in pixels for your image.

  3. Step 3: Run it and compare

    Press Upscale. After 15–80 seconds drag the slider to compare the result with the original.

  4. Step 4: Download

    Download PNG, JPG or WEBP with no watermark, or open it in Edit Studio.
Close-up portrait of a young woman with freckles and dark curly hair — original 300 px JPEG
Close-up portrait of a young woman with freckles and dark curly hair — after Image Upscaler
BEFORE · 300 px JPEGAFTER · 4K · 3664 × 4579

A 300 px JPEG portrait upscaled to 4K with Image Upscaler.

At 100%

Upscaled vs stretched, zoomed in

The same crop from the original stretched with bicubic resizing, and from the real upscale.

  • Close-up portrait of a young woman with freckles and dark curly hair — the 300 px JPEG original stretched to the same size (bicubic)
    Stretched
    Close-up portrait of a young woman with freckles and dark curly hair — the same crop after Image Upscaler
    Image Upscaler

    Tiny portrait · 300 px JPEG → 4K · 3664 × 4579

  • White leather sneaker with orange details on a concrete floor — the 320 px JPEG original stretched to the same size (bicubic)
    Stretched
    White leather sneaker with orange details on a concrete floor — the same crop after Real-ESRGAN
    Real-ESRGAN

    Product shot · 320 px JPEG → 2048 px

  • Anime girl with silver hair and a red scarf on a rooftop at sunset — the 300 px original stretched to the same size (bicubic)
    Stretched
    Anime girl with silver hair and a red scarf on a rooftop at sunset — the same crop after Real-ESRGAN
    Real-ESRGAN

    Anime art · 300 px → 1832 × 2290

  • Turquoise alpine lake below snowy mountains with a wooden cabin — the 480 px JPEG original stretched to the same size (bicubic)
    Stretched
    Turquoise alpine lake below snowy mountains with a wooden cabin — the same crop after Image Upscaler
    Image Upscaler

    Landscape to 4K · 480 px JPEG → 4K · 5461 × 3072

Left: the original enlarged with ordinary bicubic resizing. Right: the same area of the real Kenerate output. Both crops are shown at the same size.

Reference

What size should I upscale my image to?

Pick the size by where the image is going. Screens are measured in pixels; prints need about 300 pixels per inch to look sharp at arm's length.

Common image sizes in pixels
SizePixelsGood for
HD (720p)1280 × 720Web, email, thumbnails
Full HD (1080p)1920 × 1080Social posts, slides
2K / QHD2560 × 1440Websites, monitors
4K UHD3840 × 2160Wallpapers, TVs, large screens
8K UHD7680 × 4320Big prints, banners
4×6 in print1200 × 1800Photo print at 300 PPI
8×10 in print2400 × 3000Framed print at 300 PPI
A4 print2480 × 3508Documents, posters at 300 PPI

2× vs 4×: 2× doubles the width and height (4 times the pixels); 4× makes it four times wider and taller (16 times the pixels). A 960 px wide image needs 4× to pass 3840 px, the width of 4K.

Seven engines

Which engine should I use to upscale an image?

Faithful engines for a straight upscale. For blurry or old photos, see Phota Enhance on the enhancer page.

  • FaithfulDEFAULT

    Real-ESRGAN

    Classic super-resolution — sharper edges, less noise, bigger image.

    Best for: Quick clean-ups of AI renders, web images and product shots.

    Larger, sharper copy ~25s per image

    Use

  • Faithful

    Image Upscaler

    Straight upscale to 2K, 4K or 8K that keeps the original texture.

    Best for: Everyday photos and AI art to a standard size.

    Up to 8K ~45s per image

    Use

  • Faithful

    Kenerate Upscale

    Pick the exact size in megapixels — up to 128 MP, very fast.

    Best for: E-commerce and design assets at a precise size, fast.

    Up to 128 MP ~14s per image

    Use

  • Faithful

    Ultimate Upscaler

    Higher-quality 2K / 4K / 8K upscale for pro restoration.

    Best for: Marketing assets and photo restoration where fine detail matters.

    Up to 8K ~19s per image

    Use

  • Creative

    Clarity Pro

    Up to 16× with a creativity dial — stay true or invent fine detail.

    Best for: Portraits and campaign visuals for print; keeps identity, adds detail.

    Up to 64 MP ~81s per image

    Use
New accounts get 25 free credits to try the engines on their own images.

Need 4K right now? Pick Image Upscaler → 4K — you start with 25 free credits.

Upscale to 4K

Without AI tools

How to upscale an image in Photoshop

Photoshop has two built-in ways. Super Resolution is AI-based but fixed at 2×; Image Size works for any size but only interpolates.

  1. Step 1: Open the photo in Camera Raw

    Open the file itself in Camera Raw — for a JPEG, use Open in Camera Raw from Adobe Bridge — or in Lightroom. Super Resolution is not in the Camera Raw Filter.

  2. Step 2: Run Super Resolution

    Right-click the image and choose Enhance, then tick Super Resolution. The result is 2× the width and height (4× the pixels).

    Right-clickEnhanceSuper Resolution

  3. Step 3: Or resample in Image Size

    For other sizes choose Image → Image Size, tick Resample and pick a resampling method. This adds pixels by interpolation, so the result is softer than an AI upscale.

    ImageImage SizeResample

More examples

Upscaled with Kenerate

Hover — or tap “Original” — to see what went in.

Try it free
  • Anime girl with silver hair and a red scarf on a rooftop at sunset — after Real-ESRGANESRGAN

    Anime art

    300 px → 1832 × 2290

  • Fantasy castle on a cliff above a glowing sea with dragons — after Ultimate UpscalerUltimate

    AI concept art

    512 px render → 4K · 5461 × 3072

  • Cafe chalkboard menu listing coffee drinks and prices — after Image UpscalerUpscaler

    Text on a menu

    360 px JPEG → 4K · 4730 × 3547

  • White leather sneaker with orange details on a concrete floor — after Real-ESRGANESRGAN

    Product shot

    320 px JPEG → 2048 px

Next steps

More ways to fix an image

In depth

How big should an image be? Sizes from the platforms

Screen, social and print sizes from each platform's own help pages — so you upscale to the size you actually need.

Social media

Official sizes from the platforms' help centres:

  • YouTube thumbnails — now 3840 × 2160 recommended (2160 × 3840 for Shorts), at least 640 px wide, 16:9 [1].
  • LinkedIn — profile photo 400 × 400 up to 7680 × 4320 px; background 1584 × 396 px; 8 MB max [2].
  • Facebook Page — profile picture 320 × 320 px or larger; cover at least 400 × 150, loading fastest at 851 × 315 [3].

Online stores

Amazon prefers over 1,000 px on the longest side so shoppers can zoom [4]; Shopify says 2048 × 2048 px usually displays best for square images [5]. A 4K upscale clears both.

Prints

Photo labs publish their own minimums. Walgreens asks for 300 DPI and lists 540 × 360 px as the minimum for a 4×6 print and 5400 × 3600 px for a 24×36 poster [6]; Shutterfly recommends 1600 × 1200 px for 8×10 and 2400 × 3600 px for 24×36 [7]. At the classic 300 PPI, a 4×6 is 1200 × 1800 px and an 8×10 is 2400 × 3000 px — pick Kenerate Upscale and a megapixel size to hit those exactly.

Upscale once, from the best copy

Each round of resizing and JPEG saving adds damage. Real-ESRGAN was trained on exactly that kind of repeated degradation [8], but it still works best on the largest, least-compressed copy you have — upscale once to the final size rather than in several steps.

Start free

Start free, top up only when you need to

25 free credits on sign-up. The same credits work in every Kenerate tool.

  • 25 free credits on sign-up

    Test on your own images before you buy anything.

  • Credits never expire

    One-time packs — use them this week or next year.

  • No subscription, no watermark

    Nothing to cancel. Free results download clean.

  • One balance, every tool

    The same credits work across images, video, voice and 3D.

See credit packs

Tried it? Tell us how it went

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FAQ

Upscale image questions

8 questions

Still stuck?

A real person answers — usually within a day.

Email usTry it free
01

How do I upscale an image for free?

Open the Kenerate image upscaler, add your picture and run the default Real-ESRGAN engine. New accounts get 25 free credits to test, and bigger jobs use one-time credit packs that never expire. There is no watermark.

02

How do I upscale an image to 4K?

Choose the Image Upscaler engine and pick 4K. It outputs 4K whatever the input size. In our test a 480 px landscape came out at 5461 × 3072 pixels.

03

What does 2× or 4× upscaling mean?

2× doubles the width and the height, so the image has 4 times as many pixels; 4× makes it 4 times wider and taller, 16 times the pixels. A 500 × 500 image is 1000 × 1000 at 2× and 2000 × 2000 at 4×.

04

Will upscaling make a blurry image sharp?

It helps with softness from a small size or compression. For a photo that is out of focus or shaken, use Phota Enhance, which is built to repair blur, grain and old-photo damage.

05

How do I upscale an image in Photoshop?

Open the photo in Camera Raw, right-click it, choose Enhance and tick Super Resolution — that doubles the width and height. For any other size use Image → Image Size with Resample on.

06

How many pixels do I need to print?

About 300 pixels per inch for a sharp print: 1200 × 1800 px for a 4×6 in photo, 2400 × 3000 px for 8×10 in, and 2480 × 3508 px for A4.

07

Can I upscale several images at once?

The upscaler processes one image per run. Every result is saved in your history, so you can run several in a row and download them later.

08

Does upscaling reduce quality?

An AI upscale adds pixels without the blur of a normal resize, so it usually looks better, not worse. Upscaling an already large image gives little benefit — the tool warns you if the size you pick is smaller than your image.

Every pixel, rebuilt. Up to 128 MP.

Seven engines in one browser tool — faithful, creative and restoration — up to 8K or 128 MP.

AI engines
7
AI engines
Largest output
128 MP
Largest output
Free credits to start
25
Free credits to start
Straight upscale to
8K
Straight upscale to

Explore the toolkit

More upscale, enhance and restore tools

Every Kenerate page for making images bigger, sharper, cleaner and older photos new again.

See more of Kenerate AI in your Google resultsAdd kenerateai.com as a preferred source — Google shows more from your preferred sources in Top Stories and AI answers.

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Also searched for

upscale image · image upscale · upscale picture · upscale images · upscale image free · upscale image to 4k · how to upscale an image · upscale image in photoshop · 2x upscale · 4x upscale · enlarge image · make image bigger

Written by the Kenerate AI team

We build and run the Kenerate image upscaler; every example on this page is a real output of the tool from the input shown. Last updated 26 September 2026. Corrections: hello@kenerateai.com.

Sources

Ready when you are

Upscale your image now

25 free credits on sign-up. 2K, 4K, 8K or up to 128 MP. No watermark, no subscription.

Open the upscalerSee pricing
  • 25 free credits
  • No watermark
  • Credits never expire