Pixel Art Upscaler (2× to 8×)
Ordinary upscaling blurs pixel art because it blends neighbouring pixels to invent in-between colours. This tool scales by whole numbers only, so each original pixel becomes an exact block, or, with Scale2x, rounds off diagonal staircases without adding a single new colour. Animated GIFs keep every frame.
- Processed locally
- No upload, no wait
- No sign-up
- No watermark
Drop images here
or choose files · paste with Ctrl/⌘ V
JPG, PNG, WebP, HEIC, AVIF, GIF, TIFF, SVG, RAW, PSD, JXL, BMP, ICO and more
How to use Pixel Art Upscaler
- 1
Drop your images, choose files, or paste from the clipboard.
- 2
Adjust the options. The preview updates as you change them.
- 3
Click Upscale. Files are processed on your device.
- 4
Download each result or everything as a ZIP.
Why use Aback Images for pixel art upscaler
No blur, no new colours
Whole-number scaling keeps every pixel a crisp block; Scale2x only reuses colours already in the sprite.
Animations too
Animated GIF, WebP and APNG sprites are scaled frame by frame and stay animated.
Sprite sheets in bulk
Upscale a whole folder of sprites at once and download them as a ZIP.
Processed on your device
Your images are decoded, edited and encoded inside this browser tab by Web Workers. Nothing is uploaded to a server.
Related tools
Enlarge photos with Magic Kernel Sharp or Lanczos and detail enhancement, or pixel art with hqx.
Turn photos into 8-bit style art: chunky pixels mapped onto real NES, Game Boy, PICO-8, C64, CGA or EGA palettes, with optional dithering.
Downsample to a pixel grid with a limited palette for retro 8-bit art.
Resize images to exactly 64×64 px without stretching, for sprites, icons and small avatars, as a transparent PNG.
Resize to exact pixels, a percentage or a longest side, with Lanczos3 and Magic Kernel resampling. Batch ready.
One click sizes for Instagram, Facebook, X, LinkedIn, YouTube, TikTok, Pinterest, WhatsApp and more.
Fit any photo into a square with a blurred, coloured or transparent background. No cropping.
Set 72, 150, 300 or any DPI losslessly for JPG and PNG without touching the pixels.
Frequently asked questions
What is Scale2x?
Scale2x (the same algorithm as AdvMAME2x, derived from EPX) compares each pixel with its neighbours and smooths diagonal edges as it doubles the size, using only colours already in the image. Scale3x does the same at three times, and 4×, 6× and 8× chain the two. Nearest neighbour keeps the original blocky look.
Why only whole-number factors?
At 2×, 3× or 4× every source pixel becomes the same number of output pixels, so the grid stays even. A factor such as 2.5× makes some pixels wider than others, which looks uneven in pixel art.
Are my images uploaded anywhere?
No. Processing happens inside your browser with WebAssembly and Web Workers. The site only downloads the app code and codecs; your files never leave your device. You can confirm this with the live upload counter on the tool, or in your browser's network panel.
Can I process many files at once?
Yes. Drop a whole selection or folder. Files are processed in parallel on several worker threads, each result can be downloaded on its own, and everything can be saved as one ZIP.
Is it free? Is there a file limit or watermark?
It is free with no account, no watermark and no daily limit. The only limit is your device's memory: very large images (over roughly 100 megapixels) may be refused to keep the tab from crashing.