You might also like

AI Text Summarizer

Summarize long text or PDF files with AI using your own API key: pick the summary length and output language. Nothing is uploaded to any server.

AI SQL Generator & Optimizer

Describe what you need in plain language and let AI write the SQL, or paste an existing query to get an explanation and optimisation tips. Works with MySQL, PostgreSQL, SQL Server and SQLite.

Read QR / Barcode

Read and decode QR codes, barcodes, and Data Matrix from uploaded images or paste directly. Free online barcode scanner with multi-format support.

PDF Splitter

Split PDF files online free. Extract page ranges (1-3,5), split every page into a separate file, or chunk the document every N pages. No upload, all processing in your browser.

FAQ

The image is read and downscaled inside your browser. Only the downscaled image data is sent directly to the AI provider you selected — BoxTool never receives or stores it.

You need a vision-capable model: Google Gemini, Groq (Llama 4), OpenRouter with a vision model, or a custom endpoint that supports images.

About this tool

Good alt text helps search engines understand your image and supports screen-reader users. This tool produces several alt text variants (short, detailed, SEO-style) plus captions and hashtags for blogs, product pages and social posts. Review the suggestions and adjust them to the real context of the image.