Upscale4 vs Bigjpg at a glance
| Upscale4 | Bigjpg | |
|---|---|---|
| Free limit | 5 images a day, batches of 5Source: our pricing | 20 images a month, slow queue on freeSource: bigjpg.com, checked 6 Oct 2026 |
| Max free output | 2× and 4×, up to 4,096 px on the long sideSource: our pricing | Up to 4×Source: bigjpg.com, checked 6 Oct 2026 |
| File and size limits | Files up to 100 MB free, 1 GB on ProSource: our pricing | Input up to 5 MBSource: bigjpg.com, checked 6 Oct 2026 |
| Watermark | No watermarkSource: our pricing | No watermarkSource: bigjpg.com, checked 6 Oct 2026 |
| Sign-up | First download each day needs no account, then a free accountSource: our pricing | Not requiredSource: bigjpg.com, checked 6 Oct 2026 |
| Uploads your image | No, it runs in your browserSource: our pricing | Yes, deleted after 24 hoursSource: bigjpg.com, checked 6 Oct 2026 |
| Extra models | Pro adds the "Photo, max quality" model and Enhance facesSource: our pricing | Photo and artwork modelsSource: bigjpg.com, checked 6 Oct 2026 |
| Paid price | Pro $5/month or $50/year: no size cap (up to 16,384 px), unlimited, batches of 200Source: our pricing | $6 for 2 months or $22 for 12 months, up to 16×Source: bigjpg.com, checked 6 Oct 2026 |
"Not published" means we could not confirm that detail on the linked page when we checked on 6 Oct 2026. Prices and limits change, so check the source before you decide.
Where Bigjpg is better
- Cheaper paid plan: $22 for 12 months, against Upscale4 Pro at $50/year.
- Paid plans go up to 16×. Upscale4 tops out at 4×.
- No sign-up needed.
Where Upscale4 is better
- Bigger files: up to 100 MB free, against 5 MB.
- No server queue: Upscale4 runs on your own device, so speed depends on your hardware, not on a shared line.
- More free images over a month: 5 a day, against 20 a month.
- Your image stays on your device. Bigjpg uploads it and deletes it after 24 hours.
Which to pick
Pick Bigjpg for the cheapest yearly plan or for scales above 4×. Pick Upscale4 for big files, no queue and no upload.
Questions
Is Upscale4 a free Bigjpg alternative?
Yes. Upscale4 Free gives 5 images a day, batches of 5, 2× and 4×, up to 4,096 px on the long side, with no watermark. Bigjpg: 20 images a month, slow queue on free (checked 6 Oct 2026).
Does Bigjpg upload my images?
Bigjpg: Yes, deleted after 24 hours. Upscale4 runs in your browser, so your image stays on your device.
Which gives a bigger free result, Upscale4 or Bigjpg?
Upscale4 Free: 2× and 4×, up to 4,096 px on the long side. Bigjpg: Up to 4×. Upscale4 Pro removes the size cap.
How do the paid plans compare?
Upscale4: Pro $5/month or $50/year: no size cap (up to 16,384 px), unlimited, batches of 200. Bigjpg: $6 for 2 months or $22 for 12 months, up to 16×.
Sources
Bigjpg figures checked 6 Oct 2026. Names are used only to identify each product.