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Free AI Image Upscaler

Commercial use OK 380+ models No watermark No sign-up needed
Model:
+ GPT-5, Claude, Gemini
Take a small or low-res image up to 2× or 4× its original resolution. Ideal for printing iPhone shots, rescuing old profile pics, enlarging AI art, or prepping product photos for a billboard. We read your image dimensions after upload and show the exact output size before you hit upscale.

Drag & drop your image here

or click to browse

JPG PNG WebP

Up to 10MB

Uploaded preview
Input: — Output: — — —
Standard runs on our GPU and is free within your daily pool. Topaz rebuilds per-pixel detail — best for print.
Output is cached as PNG. 4× results are 4× the pixels (16× the area) — plan for a larger file.
Token estimate
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Upload an image to see the exact output dimensions and cost.
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What you can upscale

Prep photos for print

A 1080p iPhone shot is only ~3.5\

Push to 4K / Retina

Old 720p / 1080p content made sharp for 4K monitors and Retina displays.

Scale up AI art

Blow SDXL / FLUX outputs up from 1024px to 4K without losing coherence.

Rescue tiny thumbnails

Old avatars, ebay thumbnails, and forum attachments pushed to usable sizes.

Product photos

Amazon wants 1600px+ for zoom. Upscale low-res manufacturer photos in one click.

Scanned documents

Old photocopies and faxed docs brought up to OCR-readable resolution.

How to upscale 2× or 4×

Upload your image

JPG, PNG, or WebP up to 10MB. We read the dimensions automatically and show the projected output size.

Pick scale + model

2× for display, 4× for print. Standard is free-pool. Topaz and Ideogram rebuild more detail for premium quality.

Upscale

We rebuild every pixel. Standard runs in ~5s. 4× Topaz on a large image can take ~30s.

Download at new resolution

PNG output at the new resolution. No watermark. Share or save to your dashboard.

Free.ai vs. other upscalers

Free.aiTopaz GigapixelLet's EnhanceWaifu2x
Starting costFree pool, no sign-up$99 one-off$9–$34/moFree
ModelsReal-ESRGAN + Topaz + Ideogram + Clarity + AuraSR + CCSRTopaz proprietaryUndisclosedWaifu2x CUNet
Max scale4× (Topaz supports 6× input)6×4×2×
Install required?No — browser onlyYes, desktop appNoNo
API?Yes, free-tier—Paid—

Related tools: Quality enhance (same resolution) · Unblur · Restore old photo · Video upscaler

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Want better results? Premium models (GPT-5, Claude, Gemini) deliver higher quality. View Plans

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Upscale and enhance images for free with AI. 2x and 4x resolution increase.

How to Use Free AI Image Upscaler

1
Enter your input

Type text, upload a file, or describe what you want. No account needed.

2
Click generate

Our AI processes your request in seconds using the best open-source models.

3
Download & share

Download, copy, or share your result. Free for personal and commercial use.

Use this tool via API

Automate this tool from your own code. OpenAI-compatible REST endpoint, Bearer-token auth, no extra SDK required. Token costs match the web interface.

API Documentation Get API Key 
curl -X POST https://api.free.ai/v1/image/generate/ \
  -H "Authorization: Bearer sk-free-..." \
  -H "Content-Type: application/json" \
  -d '{"prompt": "A sunset over mountains", "model": "sdxl"}'

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Free AI Image Upscaler — FAQ

Yes! Free AI Image Upscaler on Free.ai is completely free. No credit card, no hidden fees, no trial period.

No! You can use Free AI Image Upscaler immediately without any registration. Creating a free account gives you 3x more daily usage.

Free AI Image Upscaler is powered by state-of-the-art open-source AI models running on our GPU servers. Enter your input and get results in seconds.

Absolutely. Your data is processed securely and never stored permanently. We do not sell or share any user data.

Free users get generous daily limits that reset every 24 hours. Sign up for 3x more, or upgrade for unlimited access starting at $5/month.

Yes! Free AI Image Upscaler works on all devices. Our responsive design adapts perfectly to phones, tablets, and desktops.

Yes! All output from Free AI Image Upscaler is yours to use for personal and commercial purposes. Our AI models are commercially licensed.

Free AI Image Upscaler delivers comparable quality to paid services using the latest open-source AI. We believe AI should be free for everyone.

Free AI Image Upscaler uses best-in-class open-source models like Qwen, FLUX, Kokoro, Whisper, and more. We update to the latest models regularly.

We are working on a developer API. Contact us for early access to the Free AI Image Upscaler API.

Yes! You can download, copy, or share results. Signed-in users can also access their full generation history.

Free.ai runs AI locally on our own servers using open-source models. This means true privacy, no rate limiting tricks, and no bait-and-switch pricing.

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