Alt Text Helper

How Alt Text Helper works

Write short, useful alt text from your own description of an image. Counts characters against the 125-character limit screen readers prefer. Everything happens inside this page: the tool reads your input, runs the calculation or conversion locally, and hands the result back to you. Nothing is transmitted, because there is no backend to transmit it to.

That design choice is deliberate. Most free tool sites upload your files to a server, process them there, and quietly keep a copy. Toolcin cannot do that — the site is a set of static files. If your connection dropped the moment the page finished loading, every tool would still work.

What alt text is for

Alt text describes an image for someone who cannot see it — screen-reader users, and anyone whose image failed to load. It is not a caption, not a keyword field and not a place to repeat the surrounding sentence.

The practical test: if the image vanished, would the alt text let the reader follow the page? If yes, it is doing its job.

Writing one that works

Describe the subject and the action, not the medium. “Woman drinking coffee at a desk” beats “image of a woman”. Skip “picture of” and “photo showing” — the screen reader already says it is an image.

Keep it under about 125 characters. Longer text is truncated by some screen readers, and a paragraph of description is usually a sign the image is doing too much work.

When alt should be empty

Decorative images — dividers, background flourishes, an icon next to its own text label — should have alt="" so screen readers skip them. An empty alt is a decision, not an omission.

For a purely visual chart, the alt should point to the data rather than describe the colours: “Sales rose 30% from 2024 to 2025” is more useful than “a bar chart”.

Good to know

• Works offline once loaded, including on flights and in locked-down networks.
• No file size limit beyond your device's own memory.
• Free to use, with no account and no usage counter.
• Results are produced locally, so they are not logged or shared with anyone.

Questions