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1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitchesTo change an image in WordPress, first identify where it is controlled. An image inside the page or post body is an Image block; a post or page’s featured image is managed separately in the settings sidebar. Select the correct control, replace or edit the file, save the page, and verify the published view.
Replace an image inside a page or post
- Sign in to WordPress and open Pages or Posts. Edit the page or post containing the image.
- Click the image in the block editor. Make sure the Image block itself is selected, rather than a surrounding group, column, or paragraph.
- In the image toolbar, click Replace.
- Choose Media Library to reuse an uploaded file, or choose Upload to add a new file from your computer.
- Click Update (or Publish for a new item), then open the public URL in a new tab and check the result.
The Replace menu can also reset the block to its initial setup options. In the block inserter’s Media tab, you can drag an image onto an existing image to replace it. If the current image comes from another website, the toolbar may show Upload to Media Library; use that when you want a copy stored on your own site and have permission to use it. WordPress documents this workflow in its Image block guide.
When the image is hard to select
- Use List View in the editor to locate the Image block inside groups, columns, or cover sections.
- If you see a Cover, Gallery, or other block toolbar instead, select the individual image or open that block’s own settings.
- A theme, page builder, or plugin can provide a different interface. The paths above describe the standard WordPress block editor.
Change a featured image
A featured image is not the same as an image placed in the article body. Its appearance and location depend on the theme; themes may show it on archives, search results, social previews, or the single-post header.
- Open the page or post in the editor.
- Click the Settings gear if the right sidebar is hidden.
- Open the Post or Page tab and find Featured image.
- Click the existing image, then choose Replace and select a Media Library file or upload a new one. If none is set, click Set featured image.
- Use Remove only if you want the item to have no featured image, then click Update.
WordPress notes that featured-image use varies by theme. The documented controls are in the Page/Post Settings sidebar.
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Replace the file or edit the existing file?
Use Replace for a different picture
Replace is the right choice when the subject, design, or source file should change. It changes the selected block or featured-image assignment; it does not promise a site-wide replacement of every occurrence of that picture.
Use Crop for a different composition
- Select the Image block and click Crop in its toolbar.
- Adjust the crop, rotation, or aspect ratio in the Media Editor.
- Apply the edit and save the page.
You can also edit the file globally from Media > Library: open the media item (or click Edit), choose Edit Image, make the crop, rotation, or scale change, and save. WordPress says the edited version is saved as a new image file while the original remains available in the Media Library; see Edit Media. Check the target page afterward, especially if several placements use related files.
Understand the scope of Media Library edits
Media Library title, caption, alt text, and description are metadata for the attachment. An individual Image block can have its own alt-text value, so changing attachment details does not guarantee identical metadata in every placement. The Media Library screen documentation explains these fields at Media Library screen.
Set useful alt text and other image details
After selecting the replacement, open the block’s settings and enter concise alt text describing the image’s purpose in that page. If the image is purely decorative and conveys no information or function, mark it decorative instead of adding meaningless words. The alt text saved in the Media Library supplies a default when the image is inserted elsewhere, while the block setting applies to that placement. Add a caption only when readers need it, and use the Media Library fields for a title or description that helps your site’s editorial workflow.
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| Choice | What happens | Use it when |
|---|---|---|
| Upload to Media Library | WordPress stores a copy on your site and lets you manage its metadata. | You control the image or have permission to copy it, and you want the page to remain independent of another host. |
| External URL | The page requests the image from the other server each time. | You deliberately rely on a permitted external source and accept that its availability and access rules can change. |
An externally inserted image can stop displaying if the original is moved, deleted, or no longer shared. Do not download or republish an image unless your license or permission allows it. If reliability matters, upload an authorized copy and then test the page.
Verify the change before you finish
- View the published page while logged out or in a private window.
- Check desktop and mobile layouts; a theme may crop the same featured image differently in each context.
- Confirm the image is not still cached by a performance plugin or CDN. Purge only the relevant cache if the editor shows the new file but visitors do not.
- Inspect alt text with the editor’s image settings and, when appropriate, an accessibility checker.
- Check archive cards, related-post widgets, and social-sharing previews if you changed a featured image; those areas may use theme-specific settings or cached metadata.
Troubleshooting common failures
“Replace” is missing
You may have selected a Cover, Gallery, reusable pattern, or a locked block rather than an Image block. Use List View, select the individual image, or edit the containing block’s controls. A page builder may require its own image widget editor.
The new image appears in the editor but not on the site
Confirm that you clicked Update, then bypass browser, plugin, and CDN caches. Open the public URL in a private window. If only one template location is stale, check whether that location is rendering a featured image rather than the body Image block.
The featured image changed, but the article header did not
The theme decides where a featured image appears and may disable it in a template. Inspect the theme’s single-post or page template and its Featured image display setting. The sidebar replacement itself does not force every template to show the image.
The image is broken after changing its source
For an external URL, verify the original address in a browser and check whether hotlink protection, permissions, or deletion is involved. Upload an authorized copy to the Media Library if the remote source is not dependable.
Crop or rotation controls are unavailable
WordPress’s Media Editor supports basic operations on supported image files. Download the file, make sure it is a supported format and writable by WordPress, then upload it again if necessary. Server permissions, multisite policies, or plugins can also restrict editing.
The image is the wrong size or quality
Choose the appropriate image size in the block settings, or use the Media Editor’s scale operation to create a suitable derivative. Avoid enlarging a small source file; start with a permitted, sufficiently large original and test the rendered dimensions in the published layout.
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Frequently Asked Questions
Can I replace an image everywhere on my site at once?
The standard Image block and Featured image controls affect the selected placement only. A site-wide change requires identifying each template, block, pattern, or plugin that uses the image.
Will replacing an image preserve its alt text?
Do not assume it will. Review the replacement block’s alt-text field and update it for the new image; Media Library metadata supplies defaults for later insertions.
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Does cropping delete the original file?
WordPress documents that its Media Editor saves the edited version as a new file and keeps the original in the Media Library.
Quick Recap
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