如何使用 Node.js、lambda function 压缩 Base 64 中的图像

Question

I want to compress images sent by the client side in Base 64 and pass to AWS to Store in S3 service. But my problem is that the images are a lot so we want to compress the size of the images, but to AWS we send a base 64 data which contains the image so I want to apply an algorithm or a library in the Lambda function which compress the size of the image.

The problem is not working with paths because there are libraries which do that. I need a library for doing the compress via algorithm or functions. Then it is stored in S3 so I should not have a decompress algorithm in another lambda function.

I am working with nodejs and serverless for the lambdas.

Thanks in advance

Answer 1

We do image processing using Lambda with nodejs. One of the main functionality is to compress the images down to reasonable size. What you need is to add ImageMagick as a Lambda Layer to compress the images on receiving them and upload to your S3 bucket.

Here's one such library you can use as a Lambda layer https://serverlessrepo.aws.amazon.com/applications/arn:aws:serverlessrepo:us-east-1:145266761615:applications~image-magick-lambda-layer