TinyTools vs Upscayl (2026)

Updated May 18, 2026 · ~6 min read · Honest comparison, not a takedown

The 30-second answer. Upscayl is a free, open-source desktop AI upscaler built on Real-ESRGAN and related models — it runs locally, has no upload step, supports batch processing, and is genuinely excellent for the price (zero). TinyTools' AI image upscaler is a free, browser-based tool that handles the everyday case: 2x or 4x a JPEG or PNG without installing software or downloading a 500MB app and its model weights. If you upscale images regularly and don't mind installing a desktop app, Upscayl is the more powerful tool. If you need a passable result on a random image right now — on a Chromebook, a work laptop, a phone — TinyTools is the lighter choice.

What each one actually is

Upscayl is a free, open-source, cross-platform desktop app (macOS, Windows, Linux) that wraps Real-ESRGAN and several adjacent models (ESRGAN, RealSR, ultramix, ultrasharp, remacri, and more) behind a friendly GUI. It's developed by Nayam Amarshe and TGS963 and is one of the most-starred image tools on GitHub. The processing is local, the source is on GitHub under AGPL, and the model files ship with the install. There's also a paid "Upscayl Cloud" tier for people who want server-side processing instead of running it locally.

TinyTools is a collection of free, in-browser micro-tools. The AI image upscaler runs in your browser, upscales 2x or 4x with no signup, no install, and no watermark. There's also a background remover and an AI watermark adder for adjacent jobs.

When Upscayl is the better choice

We'd point you to Upscayl if any of these describe your work:

You upscale a lot. Upscayl has real batch mode — point it at a folder, pick a model, walk away. Browser tools are one-image-at-a-time by design, and that gets old fast at volume.
You want to pick the model. Upscayl lets you switch between Real-ESRGAN variants tuned for photos, anime/illustration, line art, or denoise-heavy inputs. The right model on the right image is the difference between a good result and a smudgy one.
You can't upload client images. Upscayl runs entirely locally — nothing leaves your machine. For NDA work, medical images, or anything sensitive, that matters more than convenience.
You're on Linux. Most commercial upscalers ship Windows + macOS only. Upscayl is a first-class Linux citizen (AppImage, Flatpak, .deb).
You value the open-source guarantee. The code is on GitHub, the models are public, and the project isn't going to vanish behind a paywall — even if upstream development slowed, your existing install would keep working.
You have a decent GPU. Upscayl uses your GPU (Vulkan / NCNN under the hood) for fast local inference. On modern hardware it's quick; on integrated graphics or older machines, less so — that's where a browser tool with cloud inference can actually be faster.

When TinyTools is the better choice

And we'd point you to TinyTools if any of these describe the situation in front of you:

You want zero install. Upscayl is a real desktop app — installer, model files, a few hundred megabytes on disk, and OS permissions. TinyTools is a URL. If this is a one-off, the install isn't worth it.
You're on a locked-down work laptop, a Chromebook, or an iPad. Upscayl can't run there. Browser tools can.
You upscale occasionally. If you hit one image a month that needs to be bigger, the right tool is the one that's already open — and the browser is always already open.
Your hardware is older or has no dedicated GPU. Upscayl's local inference can be slow on integrated graphics. A browser tool that runs in the cloud or uses a lightweight model can finish faster on the same image.
You don't want to evaluate seven models. Upscayl's biggest strength — model choice — is also a learning curve. TinyTools picks a sensible default and ships the result.
You're mid-workflow on the web. If you're already in a browser drafting a blog post or building an OG image, jumping out to a desktop app for one upscale breaks flow.

Side-by-side: TinyTools vs Upscayl

Feature	TinyTools	Upscayl
Price	Free	Free (desktop) / paid Upscayl Cloud tier
Signup required	No	No (desktop)
Install required	No, runs in browser	Yes (macOS / Windows / Linux)
Open source	No	Yes, AGPL on GitHub
Max upscale	4x typical	Up to 16x (with quality trade-offs)
Model choice	Single default model	Multiple Real-ESRGAN variants
Batch processing	One image at a time	Yes, folder-based queue
Runs offline / locally	In-browser	Fully local desktop app
Input formats	JPEG, PNG, WebP	JPEG, PNG, WebP, plus formats by model
Linux support	Any browser	First-class (AppImage, Flatpak, .deb)
Mobile / tablet	Works in mobile browser	Desktop only
Best for	Quick web-grade upscales	Volume, local processing, model control

Pricing in plain English

Upscayl is free for the desktop app. The project is community-maintained and accepts donations through the usual open-source channels. There's a separate "Upscayl Cloud" subscription for people who want server-side upscaling without running the desktop app — that's a paid product and the right choice if your hardware can't handle local inference, but it's not what most people mean when they say "Upscayl." The desktop app, which is what made Upscayl famous, costs nothing.

TinyTools is free too. No trial, no watermark, no signup, no upsell. The honest catch: it's a single in-browser model with sensible defaults, not a multi-model power tool. That's the trade — convenience for control.

Use case scenarios

"I have a folder of 300 old family photos to upscale."

Upscayl. Batch mode is the whole point of this workflow, and TinyTools' one-at-a-time UX will be miserable at scale.

"I'm on my work laptop and IT won't let me install anything."

TinyTools. Upscayl is a real install, and a managed device won't allow it. A browser tool sidesteps the policy entirely.

"I'm upscaling a manga page or pixel-art illustration."

Upscayl. Pick the anime-tuned or line-art model — that's where Upscayl's model selection pays off. A general-purpose browser upscaler will smudge the linework.

"I need this product photo to be 2000px wide for a blog post."

TinyTools. A 2x browser upscale of a 1024px JPEG is fine for body copy, and the round trip is 30 seconds.

"I shoot client photos under NDA — uploads aren't allowed."

Upscayl, desktop edition. Local processing means the file never leaves your machine. Verify the privacy story for any cloud upscaler before using one on contract work.

"I'm on a Chromebook making a quick OG image."

TinyTools — upscale the source asset in the browser, then drop it into the OG image generator. Zero install for a 5-minute task.

Quality: the honest assessment

This is the section where most "vs" pages lie. We won't. On a fine-detail photo at 100% zoom, Upscayl with the right model usually produces a sharper, more faithful upscale than a single-model browser tool — including ours. That's not surprising: Upscayl gives you access to multiple Real-ESRGAN variants and lets you pick the one tuned for your input. Picking the right model is half the win.

The honest follow-up: does that quality edge matter at the size you're publishing? If your output is a 1200px-wide blog image, an OG image, an Instagram post, or anything viewed on a phone — usually no, the difference disappears. If your output is a print, a high-DPI hero on a 4K display, or pixel-peeped client work — yes, model choice matters, and Upscayl will reward you for caring.

What we wish were better about TinyTools

To be fair to readers comparing tools: TinyTools doesn't yet have batch mode, doesn't expose model selection, and can't run offline as a standalone app. If those matter to you, Upscayl is the right pick and we won't argue. We're not pretending to be an Upscayl replacement for power users — we're a free tool for the long tail of "just upscale this one image, in the browser, right now."

What we wish were better about Upscayl

And to be fair the other direction: Upscayl's onboarding is a bigger step than "open a URL." You install an app, download model files, learn what the model names mean, and probably try two or three before you find one that suits your input. That's the cost of the flexibility. The other friction is mobile and tablet — there's no Upscayl on iOS or Android, so if you do creative work on an iPad, this just isn't an option.

Bottom line

Pick Upscayl when you upscale often, value local processing, want to choose the model, or work on Linux. Pick TinyTools when you want a result in 30 seconds without installing anything, are on a device that can't run desktop apps, or are mid-workflow on the web. Plenty of people will use both: TinyTools for the daily one-offs in the browser, Upscayl on the laptop when a batch shows up.

Try TinyTools Upscaler (free) Visit Upscayl