How to Upscale Anime Art, Wallpapers and Manga Scans
Why line art and flat colour survive upscaling better than photos, what pixel size a 4K or 8K wallpaper really needs, and the settings that keep outlines crisp instead of grey.
Read article →Blog
Notes from the team behind Bigjpg: how to enlarge images without wrecking them, which upscalers are worth using, print and DPI numbers, and the API for batch work.
How-to
How to Enlarge an Image Without Losing Quality
Why a blown-up image turns to mush, which settings actually change the result, and how to get a file that survives both a 4K screen and a print shop.
Read article →Comparisons
Best AI Image Upscaler: Bigjpg vs waifu2x vs Real-ESRGAN vs jpgHD vs jpgHi
We put the same twelve images through five upscalers — anime line art, a phone portrait, a badly compressed JPEG and a 300-pixel sprite — and wrote down what each one did — including the files where our own tools were not the right answer.
Read article →Basics
Print Size Cheat Sheet: How Many Pixels You Need for A4, A3 and Posters
300 DPI, 200 DPI, pixel counts for A5 to A1 and 10×15 prints — plus why the old "72 DPI images cannot be printed" rule is wrong and pixels are all that matter.
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2x vs 4x vs 8x vs 16x: Which Upscale Factor Should You Choose?
The factor only decides one thing: how many pixels come out. Here is how to work backwards from your target, and when a higher factor makes the result worse instead of bigger.
Read article →For developers
Bigjpg API Tutorial: Batch Upscale Images with Python
A complete, runnable script that uploads images, creates enlargement tasks, polls for results and downloads them — plus the concurrency and error handling that keeps a 500-image job from failing halfway.
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