Overview
AI renaming uses OpenAI’s vision API to analyze your compressed images and generate descriptive file names automatically. Instead of keeping generic names likeIMG_0042.jpg, Compresto can rename files based on their visual content — e.g., sunset-over-mountain-lake.jpg.
AI renaming is currently available for images only. Video, GIF, and PDF files are not supported yet.
Setup
Enter your OpenAI API keyYou can get an API key from platform.openai.com.
AI Models
| Model | Speed | Cost | Best For |
|---|---|---|---|
| GPT-5 Nano | Fastest | Lowest | Quick batch renaming |
| GPT-5 Mini | Fast | Low | Everyday use |
| GPT-5 | Moderate | Medium | Detailed descriptions |
| GPT-5.1 | Slower | Higher | High accuracy |
| GPT-5.2 | Slowest | Highest | Maximum accuracy |
Faster models cost less per image but may produce less detailed names. For most users, GPT-5 Mini offers the best balance of speed and quality.
Naming Presets
| Preset | Example Output | Description |
|---|---|---|
| Descriptive | golden-retriever-playing-in-park | Detailed description of the image content |
| SEO Friendly | cute-dog-park-outdoor-photography | Optimized for search engines with relevant keywords |
| Short | dog-park | Brief, concise file names |
| Technical | canine-outdoor-natural-lighting-wide-angle | Technical photography terminology |
| Custom | (your prompt) | Define your own naming rules |
Custom Prompt
When using the Custom preset, you can write your own prompt to control how files are named. For example:"Name the file based on the dominant color and subject""Use product category followed by a brief description""Generate a name suitable for an e-commerce product listing"
Max Filename Length
Set a maximum character limit for generated file names to keep them manageable. This prevents overly long names that can cause issues with some file systems or workflows.Tips
- Batch processing: AI renaming works with batch compression — all images in a batch are renamed individually
- API costs: Each image requires one API call. Monitor your OpenAI usage for large batches
- Custom prompts: Be specific in custom prompts for more consistent results
- File extension: The original file extension is always preserved regardless of the generated name