FREE IMAGE TOOL · NO UPLOAD
Image upscaler
Enlarge a photo 2× or 4× with stepwise resampling and an optional sharpening pass, then download as PNG, WebP or JPEG. It runs in this browser — no upload, no account, no watermark.
JPG, PNG or WebP up to 24 megapixels of output. Processed in your browser; nothing is uploaded. Or drag a file onto this box.
How to enlarge an image without losing quality
- Choose a JPG, PNG or WebP from your device.
- Pick 2× or 4×. The tool shows the exact output dimensions before you commit.
- Move the sharpening slider if the enlargement looks soft — 30–40% is a subtle default.
- Press Enlarge, compare the two previews, then download in the format you need.
The enlargement walks up in ×2 steps with the browser's highest-quality smoothing, which produces visibly cleaner edges than one large jump. The sharpening pass is an unsharp mask applied after the final step.
What enlarging can and cannot fix
Works well
Logos, screenshots, line art, product shots and any image whose edges are already clean. These get genuinely sharper output, and the file sizes platform upload limits demand.
Has hard limits
A 300 px thumbnail will not become a poster. Resampling cannot recreate texture, text or faces that the original pixels never captured — any tool claiming otherwise is generating new content, which is a different (and honest-to-label) feature.
Better sources beat bigger scales
If you still have the original, re-export it at full size instead of upscaling a compressed copy. Every JPEG re-save throws away detail no upscaler can restore.
Image upscaler questions
Is this AI upscaling?
No, and we will not pretend otherwise. This tool enlarges your photo with high-quality stepwise resampling and then applies an unsharp mask, which is classic image processing. It makes edges cleaner and the result look crisp at the larger size, but it does not invent new detail the way a generative super-resolution model would. For text, logos and clean graphics it is exactly what you need; for tiny faces it will not add features that were never captured.
Is it free, and is my photo uploaded anywhere?
It is free, and nothing is uploaded. The photo is decoded, enlarged and sharpened inside this browser tab with canvas APIs, so the file never leaves your device. There is no account, no credit and no watermark on the download.
How large can my photo be?
The enlarged result is capped at 24 megapixels, which covers a 2× enlargement of roughly a 3400 × 3400 photo or a 4× enlargement of roughly a 1200 × 1200 one. If your source is bigger than the cap allows at the chosen scale, the tool tells you and you can drop to 2× or start from a smaller export.
When should I use 2× instead of 4×?
Use 2× whenever it reaches the size you need. Every doubling asks the resampling to invent more information from the same pixels, so 4× looks softer than 2× on the same photo. A good pattern is 2× plus moderate sharpening for printing, and 4× only when a platform demands the pixel count, like a marketplace listing or a banner.
Why does the result look soft before sharpening?
Resampling blends neighbouring pixels, which is what keeps the enlargement free of jagged edges but also what slightly softens transitions. The sharpening slider is an unsharp mask: it pushes pixels that already differ from their neighbours further apart. Around 30–40% is subtle and safe; pushing it very high creates bright halos along high-contrast edges.
Which output format should I pick?
PNG is lossless and keeps transparency, so it is the safe default for graphics. WebP usually encodes the same image much smaller and also supports transparency, which makes it a better pick for the web. JPEG is smallest but flattens transparent areas onto a solid background and adds mild compression artifacts, so use it only when a platform requires it.