BrushDescribeRun

Edit your thumbnail without design skills

Brush over any area, describe the change, and the AI repaints just that spot. No Photoshop, no design skills.

Thumbnail Editor
Before: creator photographed against a plain beige wall
Before
After: the background swapped to a neon city at night with matched lighting by the Thumix AI editor
After
change the background to a neon city at nightRun
What You Can Do

AI thumbnail editing with plain text

Everything you'd open Photoshop for — done by describing it.

Before: tech YouTube thumbnail spoiled by leftover caption text in the corner
Before
After: the same thumbnail with the corner text removed by the Thumix AI editor
After
“remove the text in the corner”Run
Brush & prompt

Inpaint any area with a text prompt

Brush over the area you want to change, describe it in a text prompt, and the AI repaints only that region. The rest of your thumbnail stays pixel-for-pixel the same.

Before: creator photographed against a plain beige wall
Before
After: the background swapped to a neon city at night with matched lighting by the Thumix AI editor
After
“change the background to a neon city at night”Run
Backgrounds

Swap the background in seconds

Drop your subject into a gaming setup, a neon city, or a clean studio backdrop. The AI matches lighting and edges so it looks like you were shot right there.

Before: gaming thumbnail with empty space beside the creator
Before
After: a glowing gold trophy added beside the creator by the Thumix AI editor
After
“add a glowing gold trophy beside him”Run
Objects

Remove or add anything

Delete distracting clutter, stray text, or watermarks — or add props, effects, and objects that earn the click. No selections to trace, no layers to manage.

Before: bold reaction thumbnail with no title text
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After: a bold 'JUST TRY IT' title tucked behind the subject with the Thumix text tool
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Text tool:outline, shadow & behind-subjectBehind
Text

Add bold, click-worthy text

Add headline text right on the canvas with one-tap outline, shadow, and color presets. Drag it anywhere — or tuck it behind your subject for a layered, professional look.

Simple 3-Step Process

How the thumbnail editor works

Three steps from "this needs fixing" to a YouTube-ready thumbnail.

Upload your thumbnail

Bring in a finished thumbnail, a screenshot, or any base image — JPG, PNG, or WebP.

Brush over it and describe the change

Roughly brush over the area to fix and tell the AI what you want in a text prompt — no pixel-perfect selections, no tools to learn.

Generate and export

Get a fresh version in seconds. Compare, refine, then download in HD.

Made for Creators

Built for people who ship thumbnails every week

Whether it's one channel or a hundred client revisions, the editor keeps you out of Photoshop.

YouTubers

Refresh a thumbnail that's underperforming without re-shooting or rebuilding it from scratch.

Faceless & short-form creators

Build scroll-stopping covers for Shorts, Reels, and TikToks from a single base image.

Editors & agencies

Turn around client thumbnail revisions in minutes instead of bouncing files through Photoshop.

Course & brand creators

Keep a consistent look across a whole series by editing, not rebuilding, every cover.

Frequently Asked Questions

What can the thumbnail editor actually do?
You can swap backgrounds, remove or add objects, recolor clothing and skies, fix small details, and add styled headline text. Anything you can describe in a sentence, you can edit — without selections, layers, or Photoshop.
Do I need any design or Photoshop skills?
None. If you can brush over part of your image and describe what you want in plain English, you can use it. A rough stroke is enough — there's nothing pixel-perfect to trace and no tool palettes to learn.
Can I add and edit text on my thumbnail?
Yes. The editor includes a text tool with one-tap outline, shadow, and color presets, plus the ability to place text behind your subject for a layered, professional look.
What if I don't like the result?
Just generate again with a different prompt, or undo and try another area. You can compare versions side by side and only keep the one that works.
How much does it cost?
Each edit costs credits based on the AI model you pick — starting at 2 credits for the standard model. We keep prices very low, with plans starting at just $1.9, and every export is full HD with no watermark and full commercial rights.

Stop losing views to a thumbnail that's almost right

Open the editor, fix the one thing holding it back, and export in HD — no design skills required.

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