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Upload any image and get a print-ready, high-resolution version
Upload to get high resolution images
Supports JPG, PNG, WebP (max 20MB)
Nude or explicit images are not supported.
The batch image upscaler runs up to 20 photos through Real-ESRGAN in parallel and packages every result into a single ZIP — perfect for print runs, poster sets, and canvas batches.
Free 5 credits on signup
sparkpix.ai is a free, browser-based AI upscaler built for print: it enlarges photos to the pixel counts you need for sharp output at 300 DPI — the standard for high-quality prints — without stretching or softening. As a rule of thumb, multiply print inches by 300 to get the pixels you need (a 4×6" print needs 1200×1800 px; an 8×10" needs 2400×3000 px; a 24×36" poster needs 7200×10800 px). Upload, pick your target, and download in about 5–10 seconds — no signup to start. See the full print-size guide below.
Minimum pixels needed for 300 DPI print quality
Gallery-quality canvas wall art
Standard and large format photos
Large scale promotional prints
High-resolution business materials
Drop your image into our print upscaler. Any size, any format - we handle it all.
Our AI upscales your image while generating print-ready details at 300 DPI quality.
Get your high-resolution file ready for any print service or professional printer.
Unlike simple resizing, AI upscaling generates new details so your prints stay sharp at any size.
AI ensures your upscaled images meet professional print standards of 300 DPI.
Turn small digital photos or scanned images into large, printable files.
No need to reshoot or hire professionals. Upscale existing images for print.
Upload your image to our AI upscaler. It will automatically enlarge your image while generating print-ready details. For best results, upscale to at least 300 DPI at your target print size.
For high-quality prints, aim for 300 DPI (dots per inch). For example, an 8x10 inch print needs 2400x3000 pixels. Our AI can upscale your image to meet these requirements.
Yes! Our AI can upscale images up to 4x their original size while generating realistic details. A 1000x1000 pixel image can become a 4000x4000 pixel print-ready file.
Our AI upscaling actually improves print quality by generating sharp details instead of just stretching pixels. The result is a cleaner, sharper print than simple enlargement.
We recommend PNG for the highest quality as it is lossless. JPG works well for photos. Our upscaler outputs high-quality files suitable for professional printing.