Apr 19, 2025
AI image tools like Dall-E, Gemini, and Flux Pro differ in the file formats, resolutions, and batch processing capabilities they support. Here’s a quick summary to help you decide:
| Feature | Dall-E | Gemini | Flux Pro |
|---|---|---|---|
| Input Formats | PNG, JPG, WebP | PNG, JPG, TIFF | PNG, JPG, WebP, TIFF, PSD |
| Max Resolution | 1024x1024 | 2048x2048 | 4096x4096 |
| Output Formats | PNG | PNG, JPEG | PNG, TIFF, PSD |
| Batch Variations | Up to 4 | Up to 6 | Up to 8 |
| Metadata | JSON | JSON | Detailed JSON |
Key Takeaway: If you need higher resolutions and more format options, Flux Pro is the best choice. For simpler tasks, Dall-E and Gemini offer solid alternatives.

Dall-E works with PNG, JPG, and WebP image formats, with a maximum file size of 10 MB. Input images must have a resolution between 512x512 and 1024x1024 pixels. It supports both text-only prompts and combined image-text inputs, allowing natural language descriptions up to 400 characters.
When it comes to output, Dall-E generates images in PNG format and includes JSON metadata with the generation details. Users can choose from three resolution options: 1024x1024, 768x768, or 512x512 pixels. The platform also allows batch exports, generating up to 4 variations per prompt, ensuring consistent quality and format for all images.
Next, we’ll take a look at how Gemini handles input and output.

Gemini works with PNG, JPG, and TIFF files, handling sizes up to 15 MB and resolutions ranging from 256×256 to 2048×2048. You can use prompts of up to 300 characters in either text-only or image+text modes. The default output format is PNG, but you can opt for JPEG if needed. Outputs match the input resolution and come with JSON metadata that includes generation details. Batch exports allow up to six variations per prompt.
Next, we’ll look at Flux Pro's input and output capabilities.

Flux Pro builds on Gemini's input options by supporting more formats and delivering higher-resolution outputs, making it well-suited for professional workflows.
It accepts PNG, JPG, WebP, TIFF, and PSD files, with a maximum file size of 25 MB. Input resolutions range from 512×512 to 4096×4096 pixels. You can use text-only prompts (up to 500 characters) or combine text with multiple reference images for more detailed inputs.
For outputs, Flux Pro generates images in PNG, TIFF, or PSD formats, with resolutions up to 4096×4096 pixels. Each export includes detailed JSON metadata with generation settings and image details. Additionally, it allows up to 8 variations per prompt, supports sequential batch processing, and offers custom naming options.
These features make Flux Pro a powerful addition, complementing the capabilities of the other tools.
| Format | Description | Common Use Cases |
|---|---|---|
| Preserves layout and design | E-books, reports, manuals | |
| DOCX | Editable text format | Resumes, proposals, drafts |
| HTML | Web-based format for browsers | Websites, blogs, online articles |
| JPEG/PNG | Image formats | Photos, graphics, web images |
| CSV | Plain text for data tables | Spreadsheets, data import/export |
Here's a breakdown of the main points based on the format comparison table:
These points can help you determine which tool aligns best with your needs.