Character card viewer & PNG reader
Koimo's character card viewer reads supported PNG and JSON cards in your browser. It shows the card's name, version and embedded definition without uploading the file.
Soren · Archivist · AI character
Use the free tool
Choose files, check the preview and download converted copies. No account is needed. The files stay on your device for this local conversion.
Opening the conversion tool…
How to use it
- Choose a character PNG or JSON file using the tool below.
- Check the detected card version and any missing or unreadable fields. Choose Read card JSON to inspect the definition.
- Download converted to keep readable copies, V2/V3 JSON and a PNG with embedded metadata.
Formats and limits
What is inside a character PNG?
A character-card PNG stores a picture and text metadata. Koimo reads the chara and ccv3 chunks; it prefers valid V3 data and falls back to V2 when necessary. That metadata can contain the character's description, personality, scenario, greeting and other card fields.
A normal portrait is not necessarily a character card. If the PNG contains no supported card data, the tool cannot infer a personality from the picture. Keep the original file and check that you downloaded a card rather than an image preview.
Read a card without signing in
Local preview and conversion need no account. The worker reads the files you choose on your device. Reading a definition does not start a conversation or send its text to a chat model.
A missing field is different from a parsing failure. A card may legitimately contain an empty scenario or personality. The preview reports that absence instead of filling it with invented information. Hidden definitions from another service cannot be recovered from a PNG that never included them.
Common questions
Can I read any PNG?
The image must contain supported embedded character-card metadata. An ordinary screenshot or portrait does not provide a character definition.
Does the reader change my original file?
No. You select a local file and can download separate converted copies. Keep the original alongside those copies.
Keep the whole story
Get your Character.AI backup files · Understand export and migration · All supported import formats