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AI image sharpener · free credits

Sharpen image online with AI — detail back, not halos

Soft focus, a shaky hand or a photo that is just a bit mushy. AI rebuilds the edges and texture the blur merged — eyes, hair, fur and feathers come back instead of just getting more contrast.

Smiling older woman with short grey hair and a green scarf in a garden (before · 900 px, out of focus)
Smiling older woman with short grey hair and a green scarf in a garden (after · 2304 px, sharp)
Before · 900 px, out of focusAfter · 2304 px, sharp
  • Out-of-focus photos
  • Camera shake
  • Removes grain too
  • No watermark

Updated by the

Quick answer

Updated

What is an AI image sharpener?

An AI image sharpener is a tool that rebuilds the edges and texture that blur merged, instead of just adding edge contrast like a sharpen filter, so it adds no halos or extra grain. On Kenerate AI, Phota Enhance fixes blurry, out-of-focus or shaken photos and Real-ESRGAN sharpens small, soft images while enlarging them. Downloads have no watermark.

Key facts

Blurry photos
Phota Enhance
Slightly soft
Real-ESRGAN
Time
About 25–40 seconds
Free to start
Starter credits, no watermark

How it works

How to sharpen an image online

Three steps. Phota Enhance is already selected when you open the tool from this page.

Time needed
Steps
3 steps

  1. Step 1

    Upload the soft photo

    Add a JPG, PNG or WEBP up to 25 MB. This page opens the tool on Phota Enhance.

  2. Step 2

    Pick the sharpener

    Phota Enhance rebuilds detail in blurry, out-of-focus or shaken photos. Real-ESRGAN sharpens small or slightly soft images while it enlarges them.

  3. Step 3

    Compare and download

    Check the eyes, hair and edges at 100%, then download — no watermark.

1Add the image to upscale2Pick an upscaler and mode3Click Upscale4Compare and download
Kenerate AI Image Upscaler with a portrait of an old fisherman loaded as the input

Open Image Upscaler and upload a photo, or pick one from your library or a link.

1 / 4 · Add the image to upscale

Watch the tour · 1:47

7 engines, 2K · 4K · 8K & exact size, portraits, old-photo restore, before/after & chat

Chapters

Real results

What kind of blur can it sharpen?

Real Phota Enhance outputs from the soft inputs in the hero slider. Tap one to try it.

  • Smiling older woman with short grey hair and a green scarf in a garden (before · 900 px, out of focus)
    Smiling older woman with short grey hair and a green scarf in a garden (after · 2304 px, sharp)
    Before · 900 px, out of focusAfter · 2304 px, sharp

    Missed focus

    A portrait where the camera focused behind the face.

    Phota Enhance

    Try this photo
  • Smiling bearded man in a denim jacket at an evening street-food market (before · 868 px, motion blur)
    Smiling bearded man in a denim jacket at an evening street-food market (after · 2304 px, sharp)
    Before · 868 px, motion blurAfter · 2304 px, sharp

    Camera shake

    A handheld evening shot smeared by movement.

    Phota Enhance

    Try this photo
  • European robin perched on a mossy branch (before · 900 px, soft focus)
    European robin perched on a mossy branch (after · 2304 px, sharp)
    Before · 900 px, soft focusAfter · 2304 px, sharp

    Soft wildlife

    Feathers merged by soft focus, rebuilt.

    Phota Enhance

    Try this photo
  • Tabby cat with green eyes on a windowsill (before · 720 px, out of focus)
    Tabby cat with green eyes on a windowsill (after · 2048 px, sharp)
    Before · 720 px, out of focusAfter · 2048 px, sharp

    Pets

    Whiskers and fur separated again.

    Phota Enhance

    Try this photo

Side by side

Sharpen filter vs AI sharpening

The same crop of a soft robin photo. The filter adds contrast to blurred edges; the AI rebuilds the feathers.

  • Original — Soft 900 px photo
  • Sharpen filter — Unsharp Mask 160%, 2 px
  • Kenerate AI — Phota Enhance

Unsharp Mask applied with the standard algorithm; the AI result is a real Kenerate output from the same soft photo. Photoshop steps: how to sharpen an image in Photoshop.

Properly blurred rather than just soft — missed focus or camera shake? The unblur image page covers what AI can and can't recover.

Robin feathers — Sharpen filter
Sharpen filter

At 100%

Sharpened vs original, zoomed in

The same area, before and after Phota Enhance.

Zoom into a sharpened portrait

An out-of-focus garden portrait after Phota Enhance. Move over it to check the eyes and hair.

  • Eyes and lashes sharp again
  • Skin texture kept natural, not plastic
  • Background blur left alone
Smiling older woman with short grey hair and a green scarf in a garden (before · 900 px, out of focus)
Smiling older woman with short grey hair and a green scarf in a garden (after · 2304 px, sharp)
Before · 900 px, out of focusAfter · 2304 px, sharp
Smiling older woman with short grey hair and a green scarf in a garden — 900 px, out of focus in, 2304 px, sharp out with Phota Enhance.

Engines

Which engine should I use to sharpen an image?

Phota Enhance for real blur; Real-ESRGAN for small, slightly soft images.

  • Phota Enhance title card — an old faded family photograph of fictional adults restored to vivid sharp clarity on its right half

    Kenerate AI

    Phota Enhance

    Style
    Restore
    Speed
    About 37 s
    Output
    2048 px

    Best for

    Old family photos, archives and low-res pictures you want to print.

    Open Phota Enhance
  • Real-ESRGAN title card — a small pixelated render of a robot sharpened into clean crisp detail on one side of a vertical split

    Open source

    Real-ESRGAN

    Style
    Faithful
    Speed
    About 25 s
    Output
    2048 px

    Best for

    Quick clean-ups of small AI renders, web images and product shots (under 2048 px).

    Open Real-ESRGAN
  • Image Upscaler title card — a blurry low-resolution photo of a lighthouse on the left becoming crystal-clear high-resolution detail on the right

    WaveSpeed

    Image Upscaler

    Style
    Faithful
    Speed
    About 45 s
    Output
    2K · 4K · 8K
    Size
    2048+ px, 4096+ px, 8192+ px

    Best for

    Everyday photos and AI art to a standard 2K, 4K or 8K size.

    Open Image Upscaler
  • Recraft Creative title card — a carved wooden owl figurine gaining richer wood grain

    Recraft

    Recraft Creative

    Style
    Creative
    Speed
    About 29 s
    Output
    4096 px

    Best for

    Portraits and product shots that need richer texture.

    Open Recraft Creative

Related

More ways to fix a soft photo

FAQ

Image sharpening questions

How do I sharpen an image online?

Upload it to Kenerate, choose Phota Enhance for a blurry or out-of-focus photo or Real-ESRGAN for a small, slightly soft one, and download the result. New accounts get free credits.

Link to this answer

What is the difference between AI sharpening and a sharpen filter?

A sharpen filter (like Photoshop's Unsharp Mask) adds contrast along the edges that are already there, which can create halos and more grain. AI sharpening rebuilds the edges and texture the blur merged, so eyes, hair and fur come back.

Link to this answer

Can AI sharpen a very blurry photo?

It can recover a lot from soft focus and mild camera shake. When the blur is so strong that shapes are gone, the model has to guess — check faces and text closely.

Link to this answer

Will sharpening make my photo grainy?

Filters often do. Phota Enhance removes noise while it sharpens, which is why it works well on dim, handheld shots.

Link to this answer

Can I sharpen text in an image?

It will look crisper, but with unreadable text the model may rewrite letters into plausible words. Don't rely on it for documents where every character matters.

Link to this answer

How do I sharpen an image in Photoshop instead?

Filter → Sharpen → Smart Sharpen, with Amount around 100–150% and Radius 0.5–1.5 px. Our Photoshop guide walks through it.

Link to this answer

In depth

Sharpening vs deblurring: what's the difference?

How sharpen filters work, why they add halos and grain, and when AI is the better tool — with sources.

On this page

Sharpening adds edge contrast

Classic sharpening is unsharp masking: a blurred copy of the image is subtracted from the original to find the edges, and their contrast is boosted [1]. Photoshop's Smart Sharpen refines the idea — you set Amount and Radius, choose which blur to remove (Gaussian, Lens or Motion) and can reduce noise at the same time [2].

Keep going

Related tools and guides

By Last updated and reviewed

We build and run the Kenerate image tools; every example on this page is a real output from the input shown.

Sources: Unsharp masking — Wikipedia · Deblurring — Wikipedia

Sharpen your first photo

Phota Enhance rebuilds detail in blurry photos. Free credits on sign-up. No watermark.

Open the sharpener

Tried it? Tell us how it went