The Best Free AI Image Upscalers in 2026: What the Free Plans Allow
Seven upscalers compared on their free allowance, the largest free scale, the watermark rule and the cheapest paid plan in dollars, as each vendor prints it.
Short answer: Upscayl is the best free AI image upscaler if you have a computer to run it on, because its site calls it free and open source and prints no monthly quota. On the web, Bigjpg has the clearest free allowance: 20 pictures a month, up to 4x. If you want a paid web plan, Let's Enhance Starter is $9 a month on annual billing, checked on its pricing page in October 2026.
Free plans differ on three things: the monthly allowance, the largest scale they give you for free, and whether the output carries a watermark. Let's Enhance says free downloads carry a watermark that paid plans remove, and VanceAI promises clean downloads only in its paid section.
Key facts7 tools compared: Upscayl, Real-ESRGAN, Bigjpg, Let's Enhance, VanceAI, Fotor, Topaz Gigapixel
- 7 tools compared: Upscayl, Real-ESRGAN, Bigjpg, Let's Enhance, VanceAI, Fotor, Topaz Gigapixel
- Real-ESRGAN (best for: Developers and technical users who want an open-source model they can script for batch jobs): Free under BSD-3-Clause. You run the code yourself, and Colab and Replicate demos are linked on the project page.
- Bigjpg (best for: Small shops and hobbyists who need a few enlargements a month and want a web tool with no install): Free: 20 pictures a month up to 4x. Basic $6 (500 a month, two months), Standard $12 (1,000 a month, six months).
- Let's Enhance (best for: Designers and e-commerce sellers who want a web upscaler with a monthly credit plan and no install): Free with 10 credits at sign-up. Starter $9, Pro $24 and Max $34 a month, billed annually.
A free AI image upscaler enlarges a small photo and fills in detail the original never had. Most of them give you a free taste and ask for money once you outgrow it, and the wall sits in a different place on every tool. The seven tools below are the ones whose free terms we could read on the vendor's own page in October 2026.
Each entry says what the free tier allows, not only that a free tier exists.
Toolradar data: Toolradar files Upscayl and Let's Enhance under Image Editing and lists at least six alternatives for Upscayl and at least seven for Let's Enhance, with pricing checked on October 6 and October 2, 2026.
We left out several names whose pages did not state their free-tier terms or priced only in another currency.
Top Picks
Based on features, real-world fit, and value for money.
| Tool | Pricing | Best for |
|---|---|---|
| Upscayl | Free and open source (AGPL-3.0). No paid tier or monthly quota printed on the site. | Anyone who wants a free upscaler on their own computer and no monthly cap printed on the site. |
| Real-ESRGAN | Free under BSD-3-Clause. You run the code yourself, and Colab and Replicate demos are linked on the project page. | Developers and technical users who want an open-source model they can script for batch jobs. |
| Bigjpg | Free: 20 pictures a month up to 4x. Basic $6 (500 a month, two months), Standard $12 (1,000 a month, six months). | Small shops and hobbyists who need a few enlargements a month and want a web tool with no install. |
| Let's Enhance | Free with 10 credits at sign-up. Starter $9, Pro $24 and Max $34 a month, billed annually. | Designers and e-commerce sellers who want a web upscaler with a monthly credit plan and no install. |
| VanceAI | Try free with 10 credits. Starter $15 a month or $180 a year for 260 credits. Desktop app $39.90 a month. | Users who want both a web tool and a Windows desktop app, priced by a credit allowance. |
| Fotor | Free 2x downloads. 4x needs a Fotor membership, and the upscaler page prints no dollar price. | Casual users who need a free 2x enlargement now and can pay later if 4x becomes necessary. |
| Topaz Gigapixel | No free plan or trial printed. Personal $149 a year billed annually; Pro $499 a year billed annually. | Photographers and print shops who need large enlargements and will pay for a dedicated tool. |
Pricing read from each vendor's own published pricing page, checked Oct 2026. Every vendor here publishes a price.
Best for: Anyone who wants a free upscaler on their own computer and no monthly cap printed on the site.
PricingFree and open source (AGPL-3.0). No paid tier or monthly quota printed on the site.
Best for: Developers and technical users who want an open-source model they can script for batch jobs.
PricingFree under BSD-3-Clause. You run the code yourself, and Colab and Replicate demos are linked on the project page.
Best for: Small shops and hobbyists who need a few enlargements a month and want a web tool with no install.
PricingFree: 20 pictures a month up to 4x. Basic $6 (500 a month, two months), Standard $12 (1,000 a month, six months).
Best for: Designers and e-commerce sellers who want a web upscaler with a monthly credit plan and no install.
PricingFree with 10 credits at sign-up. Starter $9, Pro $24 and Max $34 a month, billed annually.
Best for: Users who want both a web tool and a Windows desktop app, priced by a credit allowance.
PricingTry free with 10 credits. Starter $15 a month or $180 a year for 260 credits. Desktop app $39.90 a month.
Best for: Casual users who need a free 2x enlargement now and can pay later if 4x becomes necessary.
PricingFree 2x downloads. 4x needs a Fotor membership, and the upscaler page prints no dollar price.
Best for: Photographers and print shops who need large enlargements and will pay for a dedicated tool.
PricingNo free plan or trial printed. Personal $149 a year billed annually; Pro $499 a year billed annually.
What it is
An AI image upscaler increases the pixel size of a photo and invents plausible detail with a trained model. The free versions cap different things. Some limit the number of pictures a month, some stop at 2x or 4x, and some limit the size or the pixel count of the input.
Upscayl works differently because it is a desktop app and its site prints no quota at all.
If you generate pictures rather than enlarge them, our guide to free AI image generators covers the free plans on that side, and our background remover guide covers the cleanup you often do before an upscale.
Why it matters
A free plan decides whether an upscaler fits your work before you pay anything. A cap of 20 pictures a month is enough for a small catalog refresh and nothing more. Product photographers hit this first, and our product photography tools guide covers the shoot itself.
Pick the tool by the volume you actually process, not by the gallery on the homepage.
Scale limits matter as much. Bigjpg's free plan stops at 4x, while Upscayl's site promises upscaling up to 16x and Bigjpg's paid packages reach 16x too.
Check the scale you need for print before you run a batch on a free tier. Our best AI image generators guide covers the generation side of the same workflow.
Key features to look for
Pricing
Every price here is the dollar figure the vendor's own pricing or product page printed in October 2026: Bigjpg, Let's Enhance pricing, VanceAI pricing, Topaz Gigapixel, Fotor's upscaler page, Upscayl and Real-ESRGAN on GitHub.
Let's Enhance and Topaz bill annually at a lower monthly rate, so the table shows both figures wherever the page does.
Methodology: we read each vendor's own pricing or product page, recorded the free allowance, the largest free scale, the watermark rule and the cheapest paid tier, and listed only what the page states.
We did not run the tools on test images, so this page makes no quality claim. Toolradar's counts come from its own listing pages.
| Plan | Price | Best for |
|---|---|---|
| Upscayl | Free | Open source under AGPL-3.0, runs on your own computer, no quota printed |
| Real-ESRGAN | Free | BSD-3-Clause code you run yourself, with linked Colab and Replicate demos |
| Bigjpg free | Free | 20 pictures a month, up to 4x, uploads up to 5MB |
| Bigjpg Basic | $6 | 500 pictures a month on a two-month term, up to 16x and 50MB uploads |
| Let's Enhance free | Free | 10 credits at sign-up, free output up to 8 MP, watermark on downloads |
| Let's Enhance Starter | $9 a month, billed annually | 100 credits a month, or $12 a month on monthly billing |
| Let's Enhance Pro | $24 a month, billed annually | 300 credits a month, or $32 a month on monthly billing |
| VanceAI free | Free | 10 credits to try, with no monthly free quota printed |
| VanceAI Starter | $15 a month or $180 a year | 260 credits a month (200 plus 60 bonus) |
| Fotor free | Free | 2x downloads, with 4x behind a membership |
| Topaz Gigapixel Personal | $149 a year, billed annually | Monthly option: $19 a month on a 12-month commitment |
| Topaz Gigapixel Pro | $499 a year, billed annually | Monthly option: $54 a month on a 12-month commitment |
The bottom line
For a free desktop option with no printed quota, start with Upscayl. For a web tool with the clearest free allowance, try Bigjpg with its 20 pictures a month up to 4x.
If you need a paid web plan, Let's Enhance Starter is the entry paid tier on its pricing page, so start the price comparison there.
Cite this: Aipresso, "Best Free AI Image Upscalers in 2026: Limits Compared", October 2026.
Frequently asked questions
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