AI Upscaling
Upscale Images — Instantly
Upscale your image 4× instantly with no blur or artifacts. No account required — just fast, high-quality results.
Drop your image here
Drag & drop or click to browse — JPG, PNG, WebP up to 20 MB
Selected Image
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Ready
4× Ultra HD Upscale
Light Model
Quadruples width & height with maximum detail. Format and filename preserved.
✅ Image upscaled successfully!
4× larger
– × –
Create Account
Upgrade to access all features.
Why it's effortless
Upscaling Made
Incredibly Simple
No learning curve. No sign-up. Drop your image and download in seconds.
4× Ultra HD in one click
Hit Upscale and get a result four times your original dimensions. No complex settings, no learning curve — just bigger, sharper images immediately.
Edge-aware sharpening
Our algorithm preserves edges and fine detail rather than just stretching pixels. Results look natural — not over-processed or artificially sharpened.
Format preserved automatically
Your JPGs stay JPG, PNGs stay PNG, WebPs stay WebP. No accidental format changes — what you upload is what you get back, just larger.
Private by default
Your images are processed securely and never stored on our servers beyond your session. Deleted the moment you download.
No account. No watermarks. No limits.
untinyJPG gives you professional-grade AI upscaling completely free — for designers, photographers, and everyday users alike.
Start upscaling nowGot questions?
Frequently Asked
Questions
Everything you need to know about upscaling images with untinyJPG.
Not with our tool. We use advanced interpolation combined with edge-sharpening passes — the same technique used in professional image editing software. Small, very low-quality source images will show some softness, but photographs and illustrations with good original detail upscale beautifully.
You can upload JPG, PNG, and WebP images up to 20 MB. The output format always matches your input — a JPG in gives a JPG out.
On your current Web Free plan, the maximum input file size is 20 MB. The output file may be significantly larger depending on your image dimensions.
Free usage is limited to 50 upscales per month. The counter Resets monthly. Your remaining quota is shown in the usage bar above the tool. Upgrade your plan for higher monthly limits.
Also try
Need a Smaller File
Instead of Bigger?
Our Image Compressor shrinks file sizes by up to 90% while keeping quality intact.
Smart Compression
Image
Image
Compression — up to 90% smaller
Reduce file size without visible quality loss. Perfect for faster websites, email attachments, and storage savings.
- Batch compress multiple images at once
- Adjustable quality slider
- Format stays the same
- Free — no account needed
90%
Smaller
Before
After
4.2 MB
420 KB
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