How This S3 Bucket Policy Generator Works
Check the boxes that match what you need, public read access, HTTPS enforcement, IP restriction, and this s3 bucket policy generator builds the exact AWS JSON on the right as you go, no memorizing statement syntax required. Unlike a bare aws s3 policy generator that just spits out JSON, every checkbox comes with a plain-English hint explaining what it actually does and a risk warning for anything that opens access publicly, so you understand the policy you're about to paste into production before you paste it. Behind the scenes it's a genuine s3 policy json generator, producing standard IAM policy syntax (Version 2012-10-17) that AWS accepts as-is.
Common S3 Bucket Policy Examples
The most common s3 bucket policy examples this tool covers are public read access for a static website (a single Allow statement scoped to GetObject) and deny insecure transport s3, a Deny statement that rejects any request not made over HTTPS, recommended for essentially every bucket regardless of whether it's public or private. An s3 public read policy alone doesn't enforce encryption in transit, which is why the two are commonly combined: allow public GetObject, but deny any request that arrives unencrypted, serving public files without exposing them to interception.
Restricting Access by IP, CloudFront OAI, or IAM Principal
Beyond public access, this tool covers the three most common ways to narrow an s3 bucket policy down to a specific audience. An s3 cloudfront oai policy keeps the bucket itself private and only lets a specific CloudFront distribution's Origin Access Identity read objects, so visitors never touch S3 directly. IP restriction denies every request except from CIDR ranges you list, useful for an office network or VPN. And an aws iam bucket policy grants access only to the exact IAM users, roles, or accounts you specify by ARN, automatically split into separate object-level and bucket-level statements since AWS requires each to be scoped to the matching ARN shape.
Common Uses and Limitations
This aws bucket policy generator is commonly used when setting up a new bucket's initial permissions, locking down an accidentally-public bucket, or configuring a CloudFront-fronted origin correctly the first time. One honest limitation worth knowing: it generates syntactically correct policy JSON but doesn't validate it against your actual AWS account, existing bucket policies, or IAM permissions boundaries, and the "Require MFA for deletes" option is a DIY bucket-policy approximation using the aws:MultiFactorAuthPresent condition, not the same thing as AWS's native MFA Delete feature, which requires enabling MFA Delete on bucket versioning with a root account's MFA device and cannot be set through a bucket policy at all.