5 Best Bigjpg Alternatives in 2026
Bigjpg pioneered AI image upscaling back in 2016, but the field has moved on. Here are 5 modern alternatives — most are free, faster, and use newer models like Real-ESRGAN.
Why People Look for Bigjpg Alternatives
Bigjpg launched in 2016 with a then-cutting-edge SRCNN model and was the first free AI upscaler many users encountered. Almost a decade later, the limitations show:
- Slow processing — typical wait time is 30 seconds to several minutes per image
- Small free quota — only 3 free images per session, then a paywall
- Older underlying model — sharper than bicubic, but lags behind modern Real-ESRGAN / SwinIR
- UI from 2016 — no batch processing, no drag-and-drop, no instant preview
- 4 MB upload limit on free tier
Quick Comparison
| Tool | Free Quota | Max Upscale | Model | Sign-up |
|---|---|---|---|---|
| BigImg | 10/day | 16x | Real-ESRGAN | No |
| Bigjpg | 3/session | 4x | Custom SRCNN | Optional |
| Upscayl | Unlimited | 4x | Real-ESRGAN | No (desktop install) |
| ImgUpscaler | 5/day | 4x | Real-ESRGAN | No |
| Topaz Photo AI | None (paid) | 6x | Proprietary | Account + $200 |
1. BigImg (Recommended Web Alternative)
Disclosure: this article is on BigImg's blog, so you should treat the recommendation with appropriate skepticism. That said: BigImg uses Real-ESRGAN (the same model many other modern tools use), runs entirely in the browser without sign-up, and gives 10 free upscales per day instead of 3 per session.
Best for: casual users who want a fast, no-friction experience. Drag, click, download.
Tradeoffs: doesn't do offline processing (you need internet), max 50 MB upload.
2. Upscayl (Recommended Desktop Alternative)
Open source, runs entirely on your computer using your GPU. No quota, no upload — your files never leave your machine.
Best for: users with a decent GPU who process many images and care about privacy.
Tradeoffs: requires installing a 200 MB app; performance depends on your GPU; iPhone users out of luck.
3. ImgUpscaler
Closest direct competitor to Bigjpg in feature set — web-based, simple UI, free quota. The model is more modern than Bigjpg's.
Best for: users specifically used to the Bigjpg flow who want an instant upgrade.
Tradeoffs: 5/day quota is tighter than BigImg's 10/day, max 4x scale.
4. Let's Enhance
Polished commercial product with extras like color and lighting enhancement. Aimed at e-commerce and pros.
Best for: businesses willing to pay $9–24/month for batch and API.
Tradeoffs: only 5 free credits forever, then paywall; overkill for casual use.
5. Topaz Photo AI
Premium desktop software combining upscale, denoise, sharpen, and face refinement. Industry-standard for pro photographers.
Best for: photographers who already pay for Adobe and want best-in-class quality.
Tradeoffs: $199 one-time + paid upgrades; no free tier; massive 5 GB install; learning curve.
Which Should You Pick?
- Just need a quick upscale? → BigImg or ImgUpscaler (free, browser, no sign-up)
- Privacy-focused, decent GPU? → Upscayl (offline, open source)
- Bulk processing for a business? → Let's Enhance ($9/mo) or BigImg credits
- Pro photographer, max quality? → Topaz Photo AI ($199 one-time)