Under the hood

Real-ESRGAN ×4 upscaling

We use a production-tuned Real-ESRGAN model fine-tuned for poster-style artwork. It rebuilds detail that simple upscaling can't add.

Print-tuned post-processing

After upscaling, we apply sharpening calibrated for ink-on-paper output — different from screen sharpening, which usually over-saturates edges.

Exact 300 DPI at your size

The export step computes the exact pixel dimensions for your chosen physical size (A4, A3, A2 or custom) and embeds them in the PDF. Printers don't need to guess.

Privacy

Source images and generated files are deleted right after the download is delivered. We never store user artwork long-term.