The basic way to add an image to an email

Most email programs let you insert an image directly into the message body by clicking an Insert or Attach button. In Gmail, click the paperclip icon at the bottom of the compose window, then select the image file from your computer. In Outlook, go to Insert > Pictures > This Device and choose your file. Apple Mail uses the attachment button in the toolbar. The image will appear inline in your message where you placed the cursor.

The difference between inserting and attaching matters. When you insert an image, it displays directly in the email body so the recipient sees it when ready. When you attach an image, it appears as a separate file the recipient must read. Most email programs default to inserting images, which is what most people want.

Key Takeaways

  • Click the attachment or insert button in your email program, then select the image file from your computer to add it to your message.
  • Image size affects how long your email takes to send and how it displays on different devices — compress large photos before sending.
  • Some email programs and recipients' settings may block images by default, so include text describing what the image shows.
  • Pasting an image directly from your clipboard works in Gmail, Outlook, and Apple Mail without needing to save the file first.

Where to find the insert button in different email programs

Gmail shows a paperclip icon at the bottom left of the compose window. Click it and select "Upload from computer" to browse your files. You can also drag and drop an image directly into the compose area. Gmail displays the image inline once it finishes uploading.

Outlook on the web has an Insert menu at the top of the compose window. Click Insert, then Pictures, then This Device. Outlook desktop versions have the same menu in the ribbon. Outlook also lets you drag images into the message body directly.

Apple Mail uses a paperclip icon in the toolbar. Click it, select the image, and choose whether to display it inline or as an attachment. Yahoo Mail and AOL Mail both use a paperclip icon similar to Gmail. Thunderbird, a free desktop email program, has an Insert menu with an Image option.

Resizing and compressing images before you send

Large image files slow down email delivery and may trigger spam filters. A photo from a phone camera is often 2 to 5 megabytes. Most email programs have size limits — Gmail allows up to 25 megabytes per message, but sending anything larger than 5 megabytes can cause delivery delays. Compressing an image reduces its file size without making it unreadable.

On Windows, right-click the image file, select "Compress pictures" if available, or use the built-in Photos app to resize before sending. On Mac, open the image in Preview, go to Tools > Adjust Size, and reduce the width and height. Free online tools like TinyPNG or Compressor.io also work if your operating system does not have a built-in option. Resize to 1200 pixels wide for most purposes — this displays clearly on phones and computers without excessive file size.

Pasting images directly without saving a file

If you have an image copied to your clipboard — from a screenshot, a web page, or another program — you can paste it directly into Gmail, Outlook, or Apple Mail without saving it as a file first. Press Ctrl+V on Windows or Command+V on Mac while your cursor is in the compose window. The image appears inline when ready.

This method works best for screenshots and images you do not plan to reuse. The email program saves the image as an attachment behind the scenes, but it displays in the message body like an inserted image. Some email programs may ask you to confirm before pasting very large images.

What happens when recipients cannot see your images

Many email clients block images by default for security reasons — Outlook, Gmail, and corporate email systems often do this. Recipients see a placeholder or a message saying "Images are blocked" instead of your actual photo. They can usually click to read images, but many do not bother.

Always include descriptive text above or below your image explaining what it shows. If the image contains important information — a chart, a screenshot, a product photo — write out the key details in words as well. This ensures your message makes sense even if the recipient never sees the image.

Embedding images from the web versus uploading from your computer

Some email programs let you insert an image by pasting a web address instead of uploading a file. In Gmail, click Insert > Image, then paste the URL. This method does not add file size to your email because the image stays on the web server. However, if the image is deleted from that server later, your recipient will see a broken image icon instead.

Uploading an image from your computer is more reliable because the image stays with your email. The trade-off is larger file size. For images you control — your own photos or screenshots — upload them. For images from websites or services you do not own, linking to the web address is acceptable if the site is stable.

Positioning and formatting images in your message

Most email programs let you click and drag an image to move it around your message. You can also resize it by dragging the corners. Right-click the image to access formatting options like alignment, wrapping text around it, or adding a border. In Gmail, click the image and use the toolbar that appears to adjust size and alignment.

Keep images aligned to the left or centered for best results on mobile phones. Images wider than 600 pixels may not display properly on small screens. If you are sending to people on phones, test how your message looks by sending it to yourself first and viewing it on a mobile device.

Frequently Asked Questions

Can I add multiple images to one email?

Yes. Click the insert button multiple times, or select several image files at once when browsing. You can also drag and drop multiple images into the compose window. Most email programs handle 5 to 10 images without problems, but the total file size still matters — keep the entire message under 25 megabytes.

Why is my image showing as an attachment instead of inline?

You may have used the attach button instead of the insert button. Delete the attachment and use Insert > Image instead. Some email programs also display images as attachments if they are very large or in certain file formats. Try compressing the image or converting it to JPG format.

What image file types work in email?

JPG, PNG, and GIF are the most reliable. BMP and TIFF files are larger and may not display on all devices. Avoid newer formats like WebP unless you know your recipients use recent email clients. JPG works best for photos, PNG for graphics and screenshots.

How do I add an image to my email signature?

In Gmail, go to Settings > Advanced > Signature, then click the insert image button in the signature editor. In Outlook, go to File > Options > Mail > Signatures, then click the image button. The image will appear in every email you send. Keep signature images small — under 100 kilobytes — so they do not slow down every message.

Can I send an image without it being compressed?

Yes, but it is not recommended. Most email programs compress images automatically to fit within size limits. If you need to send a full-resolution image, use a file-sharing service like Google Drive, Dropbox, or OneDrive instead, and send the recipient a link to read it.