optipix.art
FerramentasGuiasBlogSobre
  1. Home
  2. Legenda de Imagens

Legenda de Imagens

Gere legendas descritivas para fotos usando IA.

This tool loads a ~250 MB ViT-GPT2 AI model in your browser. It downloads once and is cached for offline use.

Arraste seu arquivo aqui

JPEG, PNG, WebP — or click to browse

☕ Love this tool? Support the developer.

OptiPix.art is 100% free — no ads, no limits, no data collection. Your support keeps every tool free for everyone.

$

🔒 Secure payment via Stripe · No account needed

Related Tools

Extrator de Texto OCR

Extraia texto de qualquer imagem em vários idiomas.

Estimativa de Profundidade

Gere mapas de profundidade a partir de imagens 2D usando IA.

Detecção de Objetos

Detecte e rotule objetos em imagens com caixas delimitadoras.

Classificador de Imagens

Classifique o conteúdo da imagem com pontuações de confiança de IA.

About Legenda de Imagens

OptiPix Image Captioner uses a ViT-GPT2 vision-language model to automatically generate descriptive text captions for your photographs. The model combines a Vision Transformer encoder (which understands image content) with a GPT-2 language decoder (which generates natural language) to produce human-readable descriptions of what appears in your images. This is invaluable for creating alt text for web accessibility, generating photo descriptions for social media posts, cataloging image libraries with text descriptions, and assisting visually impaired users in understanding image content. The model runs entirely in your browser using Hugging Face Transformers.js — your photos never leave your device. Captions are generated in English and can be edited before copying or downloading. The model downloads once (approximately 100 MB) and works offline afterward. Processing typically takes 2-5 seconds depending on your device.

How It Works

The tool uses a ViT-GPT2 model from Hugging Face Transformers.js. The Vision Transformer encoder processes the image into a feature representation, which is then decoded by the GPT-2 language model to generate a natural language caption describing the image content.

Use Cases

  • •Generate alt text for website images to improve accessibility
  • •Create photo descriptions for social media posts
  • •Catalog image libraries with text descriptions
  • •Assist visually impaired users in understanding photos
  • •Auto-describe images for documentation purposes

Frequently Asked Questions

How good are the generated captions?
The ViT-GPT2 model produces captions that accurately describe the main subjects and actions in most photographs. Complex scenes may produce simplified descriptions.
Can I edit the generated caption?
Yes. The caption appears in an editable text area where you can refine the wording before copying or downloading.
Is this useful for web accessibility?
Yes. The generated captions can serve as starting points for alt text on web images, helping make websites accessible to screen reader users.
What language are captions in?
Captions are generated in English. The model was trained on English image-caption pairs.
How large is the model download?
The ViT-GPT2 model is approximately 100 MB. It downloads once on first use and is cached for offline use.

All 19 Tools

Image CompressorBackground RemoverVideo CompressorImage UpscalerOCR Text ExtractorFormat ConverterImage ResizerEXIF RemoverFace BlurDepth EstimationQR Code GeneratorWatermark MakerColor Palette ExtractorPhoto FiltersImage to PDFObject DetectionImage ClassifierImage CaptionerAI Image Generator
optipix.art
All ToolsGuidesBlogAboutPrivacySupport ☕

© 2026 OptiPix.art — A product by Zeplik, Inc.

product@zeplik.com