What Social Media Accessibility Actually Means

Accessibility on social platforms covers four practical habits: writing alt text for images, captioning video, formatting hashtags and emoji so screen readers can parse them, and not hiding important information inside an image with no text equivalent. None of it requires new software or a bigger budget. It requires adding thirty seconds to the posting process, every time.

Most New Zealand small businesses already think about accessibility on their website (we cover the legal and practical side of that in our website accessibility guide for small business), but the same thinking rarely makes it to the Instagram app or the Facebook scheduler. That gap is the opportunity. Almost nobody else in your local market is doing this well, which makes it an easy point of difference.

Writing Alt Text for Instagram and Facebook That Actually Helps

Alt text is the written description a screen reader reads aloud instead of an image. Instagram and Facebook both generate alt text automatically using image recognition, but the auto-generated version is often vague (“may contain: person, outdoor”) and tells a screen reader user almost nothing about why the photo matters.

Writing your own alt text for Instagram and Facebook takes one extra tap at the point of posting:

• Describe what matters, not everything. Say what the image is for, not every object in frame. “Flat white and almond croissant on a wooden table at our Ponsonby cafe” beats “coffee cup, plate, table, window”.
• Skip “image of” or “photo of”. Screen readers already announce that an image is present, so those words just waste time.
• Repeat any text baked into the image. If a graphic says “20% off this week”, the alt text needs to say that too, word for word.
• Keep it under roughly 125 characters. Some screen readers cut off longer descriptions before they finish reading.
• Never keyword-stuff alt text for SEO. It is read aloud to a real person. Write for them first.

LinkedIn, X and Threads all support manual alt text on photo posts in the same way. Instagram Stories image stickers are the one common exception, since the format does not currently accept a written description, so lean harder on captions and on-screen text for Stories instead.

Captioning Video So Sound-Off Viewers Stay

Most people scroll with the sound off, and deaf and hard-of-hearing viewers rely entirely on captions to follow your content, not on lip-reading or guesswork. Both groups drop off within the first few seconds of an uncaptioned video, which makes captioning one of the highest-leverage edits a small business can make to its content.

A workable process:

1. Turn on auto-captions on TikTok, Reels or YouTube Shorts as your starting draft, never your final version.
2. Read every line back against the audio and fix names, brand terms and numbers the auto-caption almost always gets wrong.
3. Burn the captions into the video (open captions) for platforms where closed captions are not supported or get stripped out on repost.
4. Time captions to the audio in short two-to-three-word bursts rather than full sentences sitting on screen too long.
5. Caption non-speech sound when it carries meaning, such as “[laughter]” or “[phone rings]”.

If your team already works from a content pillar framework, add a caption-check step to the pillar that covers tutorials or demos. That is where uncaptioned video costs you the most watch time.

Formatting Hashtags and Emoji a Screen Reader Can Parse

Accessible hashtags are a one-line fix that most New Zealand accounts still get wrong. A screen reader reads #smallbusinessnz as one long, unpronounceable word. Written in CamelCase as #SmallBusinessNZ, the same reader announces each word separately and the hashtag is instantly understandable.

• Capitalise each word in a hashtag. #AucklandMarketing, not #aucklandmarketing.
• Put emoji at the end of a sentence, not in the middle. A screen reader announces the full name of every emoji, so “We 🎉 just launched 🎉 our new menu” becomes genuinely hard to follow out loud.
• Use two or three emoji per post at most. Strings of emoji add long, repetitive announcements with no extra meaning.
• Avoid writing full sentences in capital letters. Some screen readers read all-caps words letter by letter, as though they were acronyms.

Colour, Contrast and Text Trapped Inside Images

Low-contrast text on a busy background graphic is unreadable for anyone with low vision, and it is a common fault in templated social graphics. Check that text sits on a solid, contrasting block rather than directly over a photo, and keep font sizes large enough to read on a small phone screen in daylight.

This is where a proper content plan pays off. If your team is stretched thin and posting is inconsistent, it is worth working out whether you need an in-house social media manager, a freelancer or an agency to keep these habits consistent week to week, rather than only when someone remembers.

A 60-Second Pre-Publish Accessibility Checklist

1. Did you write custom alt text instead of leaving the auto-generated version?
2. Does the alt text repeat any price, date or offer shown only as text in the image?
3. Have you corrected the auto-captions on the video against the actual audio?
4. Are hashtags written in CamelCase?
5. Are emoji placed at the end of the sentence, not scattered through it?
6. Is any text overlay large enough and high-contrast enough to read on a small screen?

Frequently Asked Questions

Does alt text help a post get found, as well as being accessible?

Yes. Platforms and search engines use alt text to understand what an image shows, so well-written alt text can support discovery as a side effect. That should never be the main reason to write it. Write for the person using a screen reader first.

Are auto-generated captions good enough on their own?

No. Auto-captions are a useful first draft but routinely misread brand names, numbers and accents. Always read them back against the audio before publishing.

Is accessible social media a legal requirement for small business in New Zealand?

There is no specific law that mandates alt text or captions on business social media accounts in New Zealand today. Treat accessibility as good inclusive marketing practice and a reach advantage rather than a compliance checkbox, and the legal question becomes beside the point.

What is the single fastest win for a small team with no time?

Caption your video. It costs nothing, takes a few minutes per post, and keeps both sound-off scrollers and deaf or hard-of-hearing viewers watching past the first three seconds.

Inclusive marketing in New Zealand is not a separate campaign you run once a year. It is the same post you were already going to publish, built so that every follower can actually read, hear and act on it.