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Summary: Most social media platforms don’t let you add alt text, but you can and should describe what’s happening in the picture for all of your photo-based posts. Be thoughtful about how you write hyperlinks as well.
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Social media platforms raise some access issues for individuals with disabilities. Although accessibility on social media sites is limited in a lot of ways, some features do exist in each platform. This article gives practical ways you can make your posts more inclusive.
- Go into your settings and turn on alternative text for images
- When you tweet a hyperlink, indicate whether it leads to [AUDIO], [PIC], or [VIDEO]
- Use a URL shortener (Z Link or another) to minimize the number of characters in the hyperlink
- Put mentions and hashtags at the end of your tweets
- Capitalize the first letter of each word in a hashtag, (which is called camelbacking; the difference between #screenreaderdemo and #ScreenReaderDemo)
- Avoid using acronyms in your posts.
Twitter and photos
One important feature offered by Twitter is the ability to add alternative text to images in a tweet, but you have to go to your settings to turn the feature on.
Navigate to Settings > Display and sound > Accessibility > and turn on Compose image descriptions.
Now, when you post a picture, you’ll see an option to “Add a description for the visually impaired.” Adding a description is especially important when the picture you tweeted is an image of text, such as a news article excerpt.
When you tag the people in your photos, Twitter generates automatic alt text that lists the people in the picture. To tag someone in a photo, click “Who’s in this photo?” after you choose the image you want to post. You can tag up to 10 people in your picture.
If you have a hyperlink in your tweet, indicate what type of resource it leads to by adding [PIC], [VIDEO] or [AUDIO], so screen reader users can anticipate what they will find when they follow the link.
Twitter automatically alters hyperlinks to be 23 characters in the format of t.co domain in case the URL is long. This is merely a way for Twitter to help reduce your character count when posting a hyperlink. Z Link and other services have URL shortening services that can reduce the number of characters in your tweet (as screenreaders will read every character).
Put mentions and hashtags at the end of the tweet to avoid confusion for screen reader users. It can be hard for them to figure out what is being said when there are hashtags and at signs in the middle of sentences. It takes longer for them to figure out what is being said.
For hashtags, capitalize the first letter of each word to make sure screen readers know when words start and end. Spell out acronyms and put the acronym in parens. Try listening to your tweet with a text-to-speech app before posting it to see how it sounds.
You can help your followers who have low vision by making sure your avatar and bio information have adequate color contrast.
Easy Chirp is an accessible alternative to Twitter. It has better support for assistive technologies such as screen readers, with a more consistent layout and easier keyboard navigation.
- Edit the machine-generated alternative text to add richer, contextual descriptions when you post a photo
- Add a caption file, or use YouTube’s captioning services for Facebook videos
- Avoid using acronyms in your posts
- Like Facebook’s Accessibility page for updates on new accessibility features
Facebook adds machine-generated alt text automatically. This feature gives general information: whether there are cars, trees, water, or people in it. Facebook is even able to tell whether an image is a meme. You can edit the auto-generated alt text to create a richer description using your computer or an IOS device.
Add descriptive text along with pictures that you post to Facebook, rather than just the picture. If you’re clever, the descriptive text you write will both explain and enhance the meaning of the picture.
There are two options for adding captions to videos on Facebook. You can click Edit after uploading a video and add a SubRip Subtitle (SRT) file, which is a video captioning file format.
However, since not everyone knows how to create an SRT file, a better option may be to upload your video to YouTube first and add captions there.
For more information on accessibility features on Facebook and to stay updated with new ones, visit the Accessibility page on Facebook.
- Plan out your snap stories to make sure they would make sense for all users
- Use the larger text option for captions
- Make sure there is good contrast between the background and the captions
Snapchat has limited accessibility features, but there are things you can do to promote accessibility in your posts. Make sure your Snap Stories make sense from beginning to end. Storyboard (plan out) your snaps to make sure the story is coherent.
The only way to make your snap story videos completely accessible is to upload them to YouTube and caption them there.
All your friends on Snapchat will benefit from snap photos and videos that have good lighting.
For everyday chats, use the largest possible text size and ensure that the text is legible against your background image. For more information on this, read our color and contrast article. The default text is a smaller white font with a black line behind the text. This smaller text may be hard to read for people with low vision. The larger text option is located in the top right corner of screen after you type out your caption. The button is shaped like a “T” for text. There is also an option to change the color of your text appears in the top right corner of the screen after you type your text. (This option is only available for the larger text format option.)
- Edit Instagram's machine-generated alternative text to provide more detailed descriptions that also give context to the photo, e.g. "A path in my home town lined with yellow flowers on a sunny day."
- Use the post's description area to add alternative text to caption video posts
- Use the zoom-in feature to look at photos more closely by “pinching” the image with your fingers on the screen
Descriptive image text
- On the New Post screen, from the footer, select "Advanced Settings."
- On the Advanced Settings screen, select "Write Alt Text."
- After the text box opens, enter your descriptive text.
Since Instagram videos are relatively short (up to one minute long), you can use the caption space to include quotes and context for the video. It is also important to note that users can see if a video has sound by clicking on the video. There will be an icon in the bottom left corner signaling this. There will be an “X” if there is no sound in the video or a speaker if there is. There is a new zoom-in feature on mobile devices that allows users to zoom in on photos with their fingers, like you typically would on your phone.
- Create descriptive descriptions for your photos.
- Change the titles of your images to describe what is happening in the image
- Use spaces between the words in your tags
Flickr does not give you the option to include alternative text on your images, so it is important to provide meaningful text-based descriptions to accompany your image posts. Use the “Add description” option.
Flickr automatically inserts the same title as the photo file itself (e.g., “DSC001.jpg”). Change the title to something more descriptive and human readable (e.g., “my cousin Frieda at San Diego Zoo circa 1991.jpg”.
- Avoid any acronyms in your posts.
- Use meaningful captions for your posts to serve as alternative text.
Google+ does not offer an alternative text feature, so make sure to include descriptive captions when you post photos.
One accessible feature Google+ offers natively is the hyperlink preview.
Your caption should include some sort of indication to what the hyperlink exactly is by including [PIC], [AUDIO] OR [VIDEO] depending on what it is. Lastly, avoid any acronyms in your posts to accommodate screen reader users.
- Add descriptive alt text to the images you post.
- Use closed captioning when sharing a video on LinkedIn from the desktop experience.
Add Descriptive Alt Text
- Upload an image to your post.
- From the Edit your photo screen, select "Add alt text."
- Enter descriptive text in the edit box, then click "next" and complete your post. Note that on LinkedIn, alt text is limited to 120 characters.