Is PixelSter a free AI image generator?

Yes — 100% free, no signup, no watermark.

What is bulk AI image generation?

Generate up to 50 images simultaneously by entering multiple prompts, one per line. All run in parallel.

Can I generate AI videos for free?

Yes. Upload any image, write an animation prompt, choose duration, get an MP4.

Does PixelSter have a free API?

Yes. Three free POST endpoints: /api/tti, /api/pti, /api/ptv. No API key required.

Free AI Image Generator — No Signup

Three modes

One studio,
three ways to make.

Switch modes at the top of the studio and the controls follow. All three run in bulk, all three are free.

Text to Image

Describe anything and get a high-quality image in seconds. Eleven aspect ratios, up to fifty in parallel.

Flux Dev · /api/tti

Image to Image

Upload a photo and transform it with a prompt. Anime, watercolor, cinematic — composition stays, style shifts.

Flux Kontext Dev · /api/pti

Image to Video

Bring a still to life. Upload, describe the motion, choose 5–20 seconds. Get an MP4 ready for Reels or YouTube.

Motion synthesis · /api/ptv

Why PixelSter

Built for real work.

⚡

Bulk × 50

Every prompt runs at once — fifty in one press, not fifty presses.

🎨

Top AI Models

Flux Dev for stills, Flux Kontext Dev for edits. State-of-the-art.

🔓

No Watermark

Outputs are yours. Ship them, sell them, sign them.

⬇️

Save All

Take the whole batch in one click or grab individuals.

📐

11 Aspect Ratios

Square, Reels, YouTube, Instagram — any ratio you need.

🔧

Free REST API

Three POST endpoints, no key, no OAuth, no dashboard.

How It Works

From prompt
to gallery in seconds.

1

Choose Mode

Pick Text · Image · Video at the top of the studio.

2

Compose

One prompt per line for bulk, or Single with copies.

3

Generate

All prompts run in parallel — watch the pips fill.

4

Download

Save all or save individually. No watermark.

Developer API

Free REST API.
Three endpoints.

All free, all POST, all return JSON. No key, no auth, no rate-limit dashboard.

POST/api/ttitext → image

POST/api/ptiimage → image

POST/api/ptvimage → video

/api/tti · parameters

Param	Type	Required	Description
prompt	string	required	Text description of the image to generate.
ratio	string	optional	Aspect ratio, default `1:1`. One of `1:1`, `16:9`, `9:16`, `4:3`, `3:4`, `2:1`, `1:2`, `3:2`, `2:3`, `4:5`, `5:4`.

cURL · text to image

curl -X POST https://freeapi.pro/api/tti \
  -H "Content-Type: application/json" \
  -d '{"prompt":"a cinematic portrait","ratio":"16:9"}'

JavaScript · image to video

const res = await fetch("https://freeapi.pro/api/ptv", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    prompt: "the character walks slowly",
    ratio: "9:16",
    duration: 10,
    imageBase64
  })
});
const data = await res.json();
// data.videoUrl → direct MP4 link

Response

{
  "success": true,
  "imageUrl": "https://…",   // tti / pti
  "videoUrl": "https://…",   // ptv
  "prompt":   "your prompt",
  "ratio":    "16:9"
}

FAQ

Frequently asked
questions.

Is PixelSter really free?

Yes — 100% free. No signup, no subscription, no credits, no watermark on output. Fair-use throttling applies to keep the infrastructure healthy.

What does bulk generation do?

Enter multiple prompts — one per line — and PixelSter dispatches them in parallel instead of one after another. Fifty prompts finish in roughly the time of one.

How do I generate a video?

Switch to Image → Video, drop in a source image, describe the motion in verbs ("walk", "drift", "ripple"), pick 5–20 seconds, and generate. You get an MP4 you can save directly.

What is image-to-image?

Upload a photo and describe the change — "make it anime style", "add cinematic lighting". The original composition is preserved; the treatment is applied.

Which models are used?

Text-to-image uses Flux Dev. Image-to-image uses Flux Kontext Dev. Image-to-video uses a modern motion-synthesis model.

Is there really no API key?

None. Three POST endpoints — /api/tti, /api/pti, /api/ptv — return JSON with direct media URLs.

Which aspect ratios are supported?

Text-to-image: 11 ratios (1:1, 16:9, 9:16, 4:3, 3:4, 2:1, 1:2, 3:2, 2:3, 4:5, 5:4). Image-to-image adds auto. Image-to-video: auto, 9:16, 16:9.