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Visual Policy Builder
Add multiple statements with Effect, Actions, Principals and Resource ARNs through an intuitive guided form — no JSON writing needed.
Build production-ready AWS S3 bucket policies with full IAM support — conditions, multi-statement, policy analyzer, security scoring, templates, and real-time JSON validation.
Pre-built AWS S3 policy templates. Click any template to load it instantly.
Policies generated this session.
No history yet. Generate a policy to save it here.
// Configure your policy settings on the left. // Click "Generate Policy" to produce your AWS S3 bucket policy JSON.
Everything you need to build secure, precise AWS S3 IAM bucket policies — no JSON expertise required.
Add multiple statements with Effect, Actions, Principals and Resource ARNs through an intuitive guided form — no JSON writing needed.
Paste any existing S3 policy and instantly detect overly permissive rules, missing conditions, wildcard principals, and security issues.
Pre-built templates for public read, private backup, cross-account, CloudFront OAI, HTTPS-only, IP restriction, MFA-required, and encrypted upload.
Add complex IAM conditions like StringEquals, IpAddress, Bool, ArnLike, and 15+ more operators per statement.
Every field is validated as you type — bucket name format, ARN structure, principal values — with instant inline error messages.
Get a 0–100 security score for your policy rating its specificity, least-privilege compliance, and highlighting areas for improvement.
Supports AWS Account, IAM User, IAM Role, Federated and Service principal types with convenient tag-style multi-value input.
All generated policies are saved during your session. Reload and continue editing any previous policy with a single click.
Format, minify, copy to clipboard, or download your S3 policy as a .json file ready to paste into the AWS Console or AWS CLI.
Create a complete, valid AWS S3 bucket policy in under 2 minutes.
Input your S3 bucket name, optional object prefix or key, and choose the IAM policy version.
Add statements — choose Allow/Deny, select S3 actions, set principals, and add optional conditions.
Click Generate. The tool validates your config and produces clean, formatted IAM JSON instantly.
Copy or download the JSON, then paste it in the AWS S3 Console or use it with the AWS CLI.
An AWS S3 policy generator is a developer tool that creates valid, security-compliant Amazon S3 bucket policies in JSON format without requiring you to memorize IAM policy syntax. Amazon Simple Storage Service (Amazon S3) is a highly scalable, durable object storage service used by organizations worldwide to store data, application assets, backups, logs, static websites, and media files at virtually unlimited scale.
Controlling who can access your S3 bucket and what actions they can perform is critical to cloud security. AWS S3 uses resource-based IAM policies called bucket policies to enforce these access rules. A bucket policy is a JSON document attached directly to the S3 bucket and supports granular control via principals (who is allowed), actions (e.g., s3:GetObject, s3:PutObject, s3:DeleteObject), resources (the bucket or object ARN), and optional conditions (such as IP restrictions or HTTPS enforcement via aws:SecureTransport).
Using a free S3 bucket policy generator eliminates manual syntax errors and helps teams apply the principle of least privilege — granting only the minimum permissions necessary. Common S3 policy use cases include: granting public read access to static website files, enabling cross-account access for data analytics teams, restricting bucket access to a specific IP range, allowing CloudFront Origin Access Identity (OAI) to serve private content securely, enforcing HTTPS-only access, and giving AWS Lambda functions scoped S3 read/write permissions.
The key difference between an S3 bucket policy and an IAM identity policy is that bucket policies are resource-based (attached to the bucket), while IAM policies are identity-based (attached to users, roles, or groups). Understanding AWS S3 ARN format — such as arn:aws:s3:::my-bucket for the bucket itself and arn:aws:s3:::my-bucket/* for all objects inside it — is essential for precise policies. Our generator handles ARN construction automatically, ensuring correct resource targeting every time.
aws s3api put-bucket-policy --bucket my-bucket --policy file://policy.json*) means "everyone" — including unauthenticated public users. Use it only for intentionally public resources (like static website buckets) and always pair it with conditions (IP allowlists, aws:SecureTransport, etc.). Never use * with write actions like PutObject or DeleteObject without very strong conditions.aws:SecureTransport (require HTTPS), aws:SourceIp (IP allowlist), s3:prefix (restrict to a key prefix), aws:MultiFactorAuthPresent (require MFA), and s3:x-amz-server-side-encryption (require encryption on upload). Multiple conditions within one statement are evaluated with AND logic.s3:GetObject (download objects), s3:ListBucket (list bucket contents), s3:GetBucketLocation (get bucket region), and optionally s3:GetObjectVersion for versioned buckets. Avoid any write actions such as PutObject, DeleteObject, or PutBucketPolicy.Discover our full suite of free online tools for DevOps engineers, cloud architects, and developers worldwide.