Social accessibility helper

Write and review your own image description with a local reference preview. Check a few caption patterns and two-color contrast while keeping the meaning and final judgment in your hands.

No reference image

Drop the image you are describingAdd the image you are describing

Optional. JPG, PNG or WebP up to 20 MiB, or paste one. It stays on this device, and the helper does not read or describe it for you.

What the image is doing

Giving informationDescribe what a reader needs from it in this post, including any words in the image they cannot get elsewhere.A chart or diagramGive the main finding and the relationships that matter. Put longer data in the post or another accessible place.Decoration onlyCheck that it really adds nothing in this post. Platforms handle empty alt text differently, so check their controls.

Description

Your image description

Written by you. The 2,000-unit cap is this tool's limit, not a platform's alt-text maximum.

Accompanying caption

Review prompts

Write the information a reader needs from this image in its context.

I checked the written description against the image and this post's context.I included important text or data from the image in an accessible place.

These are your own review notes, not an accessibility certificate. Video captions, reading order and other platform features are not checked.

Colour contrast

Text colour (hex)

Background colour (hex)

21.00:1. Meets the WCAG AA 4.5:1 contrast threshold for normal text with these solid colours.

This compares two solid colours. It does not sample a photo, a gradient or anything see-through. Large text means at least 18 pt, or 14 pt in bold.

How to use it

1
Drop or choose the image you are describing, if you like, so it stays in view while you write. It is not uploaded or read for you.
2
Choose what the image is doing in this post, then write the description yourself and paste the caption.
3
Work through the review prompts and the checklist, and check any text colours against their background.
4
Copy the description into your platform's alt-text field, or download your review notes.

Before you export

This helper cannot understand the image or verify the accuracy of your description. It offers a manual checklist and a small set of text checks, not a complete compliance audit. No image recognition, content generation or upload takes place.

Sources and format guidance

Your inputs stay in this browser. These tools work without an account. The content editor opens separately; your files are not transferred automatically.

Open-source library notices