Before You Upload: The 10MB Limit and How to Stay Under It

Why the limit exists

Ten megabytes is generous for a pet sprite and tight for a camera. The limit exists because the generator does real work on your image in the browser: it has to decode, analyze, and pixelate before you ever see a preview. A 40MB raw photo would make that step crawl on a mid-range phone.

The practical upshot: the codex pet upload limit is rarely the wall you hit. Most people hit it with 48MP phone originals, screenshots of enormous canvases, or PNG exports of high-res art. All three are fixable in under a minute.

Check the size before you upload

Five seconds of checking beats five minutes of guessing. On your phone, the file size usually sits next to the photo in the info panel. On a desktop, right-click and look at Properties on Windows or Get Info on macOS.

If it is over 10MB, do one of these, in order of preference:

• Resize the longest edge to 1024px — the generator only needs the face, not the full resolution
• Save as JPG at 85-90% quality instead of PNG for photos
• Use WebP if your tool supports it, smallest size at same visual quality
• Skip the raw format entirely for this use case

The resize-and-compress recipe

A phone photo at 4000x3000px weighs 4-8MB. The same photo at 1024px on the long edge weighs 200-500KB at JPG quality 85. That is a 10x reduction with no visible difference at sprite scale, because the pet sprite is 1536x1872 at most and usually displayed far smaller.

One warning: do not take a compressed JPG and re-save it as another JPG. Each pass adds artifacts. Resize from the original, or from the highest-quality version you still have.

What the generator actually needs

The pixel pipeline wants a clear face, decent lighting, and a simple background — not maximum resolution. A 800px wide, well-lit photo of a face will beat a 48MP blurry one every time.

So when you are under the limit but the result is weak, the fix is rarely 'bigger file'. It is better light, a closer crop, or a cleaner background. Size is a gate; quality of the subject is the actual lever.

Upload and go

Once your file is under 10MB, upload, preview the sprite, and zoom in on the face before approving. If the eyes or hair outline look off, try a brighter or higher-res source and re-upload. The retake costs nothing.

• Check file size in the photo info panel first
• Resize to 1024px long edge if over 10MB
• JPG at 85-90% for photos, PNG for flat-color art
• Preview and zoom in on the face before approving
• Open codexpetgenerator.com and start over with the fixed image