How to Change a YouTube Thumbnail

Most creators never touch a thumbnail again once a video is live. That's a mistake if the video still gets impressions.

Vevo proved this at scale. They updated thumbnails on nearly 4,000 catalog videos, and one alone saw a 4,000% jump in views in two weeks. The same logic applies whether you have 40 videos or 4,000.

This guide covers the desktop and mobile steps, what happens after you save, and how to check a video's thumbnail history before you replace it.

How to Change a YouTube Thumbnail on Desktop

For a long-form video on a computer:

• Open YouTube Studio
• Select Content from the left menu.

• Choose the video you want to update.
• Under Thumbnail, click the three dots (options) in upper right frame, choose new thumbnail.

• Click Save.

YouTube may take time to show the new thumbnail everywhere. Changing the image does not require you to delete or re-upload the video.

YouTube Thumbnail Requirements

YouTube recommends a 3840 by 2160 pixel image with a minimum width of 640 pixels, a 16:9 aspect ratio, and a JPG, GIF, or PNG file. Video-thumbnail uploads can be up to 50 MB on desktop and 2 MB on mobile.

How to Change a YouTube Thumbnail on Mobile

You can change a long-form video's thumbnail from either the YouTube Studio app or the main YouTube app.

In the YouTube Studio app:

• Open YouTube Studio and tap Content.
• Select the video you want to update.
• Tap the pencil Edit icon, then tap Edit thumbnail.

• Choose an automatically generated image or tap Custom thumbnail to select an image from your phone.

• Review the image and tap Select.
• Tap Save.

In the main YouTube app, open your profile, go to Your videos, tap the three-dot menu beside the video, then choose Edit and Edit thumbnail. Select an automatic or custom thumbnail, tap Select, and save your changes.

YouTube may take some time to display the new thumbnail consistently across every surface.

How to Change a YouTube Thumbnail After Uploading

Open the video in YouTube Studio, upload or select the replacement thumbnail, and click Save. The same option is available in the YouTube Studio mobile app under Edit thumbnail.

After saving, the new image may appear on the watch page before it updates in search, suggested videos, subscriptions, and other YouTube surfaces. Give YouTube time to process the change before assuming it did not work.

Can You Change a YouTube Shorts Thumbnail?

You cannot upload a custom image for a Short in the same way you can for a long-form video. You can select a frame from the Short and edit that frame before or after upload in the main YouTube app, not YouTube Studio. See the full steps to change a YouTube Shorts thumbnail.

How to See YouTube Thumbnail History with vidIQ

Before changing your own thumbnail, look at how successful creators have changed theirs. A thumbnail's current design tells you what the creator is using now; its history shows you what they tested, replaced, or kept over time.

Install the free vidIQ browser extension and open a YouTube video. When thumbnail-history data is available, vidIQ shows previous thumbnails and title changes associated with that video.

Use thumbnail history to:

• Compare the current thumbnail with earlier versions
• See whether the creator changed the image, title, or both
• Identify repeated visual patterns across successful videos
• Study how established channels refresh old packaging
• Find ideas for your own thumbnail without copying another creator's design

Thumbnail history cannot tell you by itself whether a change caused more views. Use it as research, then combine what you observe with the video's timing, view trajectory, and your own YouTube Studio analytics.

Which Thumbnails Should You Change?

Changing every old thumbnail is usually a waste of time. A new image can improve how often people click when YouTube shows the video, but it cannot help a video that receives no impressions.

Start with videos that already have an opportunity to earn more clicks:

• Videos still getting views in the last 48 hours
• Evergreen videos appearing in YouTube Search or Suggested
• Videos with a click-through rate below your channel average
• Older thumbnails that look outdated or are hard to read on mobile
• Videos where the title and thumbnail communicate different promises
• Strong videos that receive impressions but convert too few of them into views

Skip videos with no current distribution unless you also have a broader reason to update them, such as a rebrand or an inaccurate image.

Change the Thumbnail First, Then the Title

If you want to know whether a new thumbnail worked, change only the thumbnail first. Updating the title and thumbnail at the same time makes it impossible to tell which change affected click-through rate.

If you have Advanced Features enabled in YouTube Studio, use Test & Compare to run up to three thumbnails against real traffic. YouTube picks the winner by watch time, not just clicks, and does the tracking for you.

If Advanced Features isn't enabled, or your video type isn't eligible, test manually: change only the thumbnail, note the date, and compare CTR and views from impressions in YouTube Studio after enough new impressions come in.

Traffic sources and audience mix can also affect CTR, so judge the result over a meaningful number of impressions. Use these additional methods to improve your thumbnail click-through rate without overreacting to a few hours of data.

How Vevo Generated Millions of Views by Changing Old Thumbnails

Changing old thumbnails is not guaranteed to increase views, but Vevo provides a strong example of what can happen when a large back catalog still receives traffic.

In a case study reported by Variety, Vevo analyzed thumbnail changes across 3,972 catalog videos, including “Ghost” by Halsey. The new design made the artists easier to recognize and gave the video brighter, clearer packaging.

The “Ghost” video recorded a 4,000% increase in views during the two weeks after its thumbnail changed. Across the larger group of updated videos, Vevo reported a 12% average lift in views during the first 20 days.

The important lesson is not that every thumbnail swap produces the same result. Vevo's videos already had ongoing demand and impressions. The new thumbnails gave more viewers a reason to click content YouTube was still showing.

For an individual creator, the practical version of this strategy is to start with evergreen or actively recommended videos, update the weakest thumbnail first, and measure the result before refreshing the rest of the channel.

Create and Test Your Next YouTube Thumbnail

A stronger thumbnail starts with better research. Use vidIQ to study thumbnail history, compare successful packaging in your niche, and create new concepts for your own videos. Install the vidIQ browser extension to analyze videos directly on YouTube, and use the AI Thumbnail Maker to build your next design.