PromptLens

Free tool · No sign-up

Free Image to Prompt Generator

Upload or paste any image and get a detailed, ready-to-use prompt — written for the AI image generator you use.

Balanced, detailed prompt for general-purpose image generation.

Natural-language prompt for any generator (ChatGPT, Gemini, Ideogram…).

Free — no sign-up needed. 3 free prompts per day.

Your prompt

Upload or paste an image, pick a style and generator. Your prompt appears here.

How it works

  1. 1

    Add an image

    Upload, drag and drop, or paste a JPEG, PNG or WebP image — a photo, render, illustration or product shot.

  2. 2

    Pick a style and generator

    Choose how the prompt should read and whether it's for Midjourney, Flux, Stable Diffusion, JSON or any tool.

  3. 3

    Copy and create

    Edit the prompt if you like, copy it, and paste it into your image generator.

Frequently asked questions

Is the image to prompt generator free?+

Yes. You can generate 3 prompts per day without an account. A free account adds 10 credits plus 5 free credits every day, all 8 prompt modes including custom instructions, and a searchable history of everything you generate.

Which AI image generators are supported?+

Every prompt works with any text-to-image tool. You can also have it written specifically for Midjourney (concise phrases plus the image's aspect ratio), Flux (rich natural language), Stable Diffusion (tags plus a negative prompt) or as structured JSON.

What do the prompt styles do?+

Each style changes what the AI pays attention to: Cinematic focuses on shot type, lighting and grading; Photorealistic on materials, lens and natural light; Product Photography on placement, reflections and studio lighting; Minimal keeps only the essentials.

Do you keep my images?+

Not when you use the free tool without an account: the image is processed in memory and discarded. Signed-in users' images are stored privately so they can see and regenerate past prompts, and can be deleted at any time.

Which image formats can I upload?+

JPEG, PNG and WebP. You can click to upload, drag and drop, or paste an image with Ctrl+V. Large images are resized in your browser before upload.

How accurate are the prompts?+

The AI is instructed to describe only what is visible and to avoid inventing details. Vision models can still make mistakes, so review the prompt and edit anything before you use it.