01
Image Compressor
Compresses images to a target quality or file size in your browser, with a live…
Image Upscaler
Enlarges images with smooth interpolation and sharpening, useful for moderate upscaling of small graphics.
Image
Nothing uploaded
No sign-up
Free, unlimited
Drop an image hereor click to choose from your device — nothing is uploaded
Add a file to begin.
In short
Image Upscaler is a free online tool on inputtesthub.com that enlarges images with smooth interpolation and sharpening, useful for moderate upscaling of small graphics. It needs no account, no download and no payment, and there is no daily usage limit. Everything is processed inside your own browser, so the data you paste is never uploaded to a server.
How to use the Image Upscaler
- Drop your image in, or click to pick a file from your device.
- Set the options you want, then run the tool.
- Preview the result and download it. The file never leaves your computer.
About the Image Upscaler
The Image Upscaler enlarges images with smooth interpolation and sharpening, useful for moderate upscaling of small graphics. It runs as plain JavaScript inside the page, which means there is no upload step, no queue and no size limit imposed by a server — the only limit is your own device.
What people use it for
- Enlarging a small logo for a print job.
- Scaling up pixel art without blurring, using low smoothing.
- Making a low-resolution image usable at a slightly larger size.
This is interpolation, not AI reconstruction. It can make an image bigger and smoother, but it cannot invent detail that was never captured. Beyond about 2×, results get soft.
Frequently asked questions
Is the Image Upscaler free?
Free, unlimited, and no email address required. You can use it a hundred times a day and nothing changes.
Is my data uploaded anywhere?
No. The Image Upscaler runs entirely in your browser using JavaScript. Because the work happens locally, the page also keeps working if your connection drops, and closing the tab is all it takes to discard everything.
What is the Image Upscaler used for?
The jobs it is built for: enlarging a small logo for a print job. Scaling up pixel art without blurring, using low smoothing. Making a low-resolution image usable at a slightly larger size. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
Is there anything to watch out for?
This is interpolation, not AI reconstruction. It can make an image bigger and smoother, but it cannot invent detail that was never captured. Beyond about 2×, results get soft.
Is there a file size limit?
There is no limit set by us, because your file is never uploaded — the only ceiling is the memory your own browser will give the tab. Very large files simply take longer to process, and a phone will give up sooner than a desktop.
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