Typed JSON Converter Turns DynamoDB JSON Into Plain JSON and Back Without Losing a Digit

Mon, 05 Oct 2026 00:00:00 +0000

Ask DynamoDB for an item and you get every value wrapped in its type: {"name": {"S": "Ana"}, "visits": {"N": "17"}}. It’s exact, and it’s a pain to read, to diff, or to hand to anything that expects normal JSON. Going the other way is worse, because writing typed JSON by hand for a test item or a quick fix is slow and easy to get wrong.

The Typed JSON Converter does both directions. Paste the output of aws dynamodb scan and get a clean list of items. Paste plain JSON and get typed JSON ready for put-item, or a set of batch-write-item requests, 25 items each. It works out the direction on its own, and it reads the shapes the AWS tools print: Scan and Query output, GetItem and BatchGetItem results, exports to S3 in DynamoDB JSON, and DynamoDB Streams records as a Lambda function receives them.

Dynamodb on KeyValueStore.com

Typed JSON Converter Turns DynamoDB JSON Into Plain JSON and Back Without Losing a Digit