Brand & product photos
Give product images more presence
Improve the appearance of smaller product photos and catalog images before using them in storefronts, landing pages and promotional material.
FREE ONLINE IMAGE UPSCALER / PRIVATE BY DESIGN
UPSCALE ANY
IMAGE.
×4AI UPSCALE
2KHIGH RES
4KHIGH RES
A free AI image upscaler for sharper photos, clearer graphics and high-resolution 2K or 4K results. No account, no watermark, and your selected image stays on your device.
IMAGE PREVIEWYour image, in focus.
PRIVATE BY DESIGN
Drop a photo here
or choose an image to get started
PNG · JPG · WebP
—→—
ORIGINAL
UPSCALED
Drop to replace image
Sharper image detailBring more clarity to everyday photos and graphics.
Private by designYour selected image is not uploaded for processing.
High-resolution resultsChoose ×4, 2K or 4K and download your result.
Make every image work
harder for you.
Low-resolution images can look soft on modern displays and large layouts. Use PixelBoost as a free online photo enhancer to enlarge product photos, improve visual assets and prepare images for websites, presentations and digital projects.
Presentations & print
Prepare images for larger layouts
Enlarge existing visuals for slides, posters, mockups and print projects. Final print sharpness still depends on the source image and intended physical size.
E-commerce
Refresh catalog imagery
Make older or smaller product assets more usable across product pages, category grids and marketing creatives without starting from scratch.
Digital art
Bring out edges and textures
Upscale illustrations, game concepts, social graphics and other visual work for clearer previews on high-resolution screens.
Your images stay yours.
Your workflow stays simple.
PixelBoost is built for people who want a free image upscaler without an account or a separate upload step. Your selected photo is processed in the browser and is not sent to an image-processing server.
Image privacy
No image upload
Your chosen image stays on your device during processing instead of being transferred to a remote image-enhancement service.
Personal & work files
Keep private assets close
Work with personal photos, early product concepts, design drafts and other visuals without adding an image upload to your workflow.
Straightforward access
No account required
Open the tool and get started. There is no profile to create before you can enlarge an image.
Clean exports
No added watermark
Download your enhanced image without a PixelBoost watermark covering the work you want to use.
Useful controls.
No extra fuss.
Choose an enlargement target, adjust the tile size for your device, inspect the change with the before-and-after slider and save the full-resolution result.
Output options
×4, 2K and 4K upscaling
Enlarge an image up to four times, or choose a 2K or 4K target when you need a particular long-edge resolution.
Image comparison
Inspect before and after
Drag the large comparison handle to reveal the original photo and the enhanced result. Check the detail before you download.
Common formats
PNG, JPG and WebP
Start with the everyday image formats used for photographs, graphics and online content, then export the processed image at its full output size.
Flexible workflow
Adjustable tile size
Choose a smaller tile when memory is limited or try a larger tile on a more capable device. If a large image fails, try a smaller tile.
Everything you need
to know.
Answers about free online image upscaling, output sizes, supported formats and keeping your images private.
What does an AI image upscaler do?
An AI image upscaler increases an image's dimensions while reconstructing visual detail, edges and textures. PixelBoost helps enlarge photos and graphics for clearer viewing on larger screens, in presentations and in digital projects.
What is the difference between ×4, 2K and 4K?
The ×4 option enlarges the source image by up to four times. The 2K and 4K options aim for a long edge of about 2,048 or 3,840 pixels when the source is smaller, subject to safe output limits. Images that already meet a target may not need further enlargement.
Is PixelBoost really free?
Yes. PixelBoost is free to use, does not require an account and does not add a watermark to the downloaded image.
Are my photos uploaded?
Your selected image is processed in your browser and is not sent to an image-processing server. Like any website, the page may load the resources needed to provide the tool, but your photo itself is not uploaded for processing.
Which image formats are supported?
PixelBoost accepts PNG, JPG/JPEG and WebP images. The enhanced result can be downloaded at its full processed resolution.
How do I compare the original and enhanced image?
After upscaling, drag the large coral-and-pink divider across the preview to reveal the original on one side and the enhanced result on the other. You can also use the arrow keys when the comparison handle is focused.
What does tile size change?
Tile size controls how the image is split during processing. Larger tiles may reduce the number of sections but can require more memory. Start with 350 px and choose a smaller tile if processing fails on your device.
Can I use PixelBoost on a phone?
Yes, PixelBoost works in modern mobile browsers. Very large images require more memory, so processing may take longer or need a smaller tile size on some phones.