S3zipper V2 is a high performance Go based microservice that zips AWS S3 files on the fly, streaming archives directly to S3 buckets or generating instant browser download links with automated HTTPS.
AWS S3 Zipper API Server V2 (Linux) is a fast, lightweight microservice designed to stream and archive files directly within Amazon S3 without downloading them locally or consuming host disk space. Built on Go and pre-configured with Caddy Server for automated TLS/HTTPS management, S3zipper handles file compression entirely in-memory to ensure low latency and high throughput.
Key Features & Capabilities:
Flexible Delivery: Zip files directly back into an S3 bucket or stream compressed .zip archives straight to a client browser via secure download links.
High Performance: Concurrent, streaming compression built to handle large datasets and high-volume workloads effortlessly.
Production-Ready Proxy: Pre-configured with Caddy for automatic TLS/HTTPS certification, which can easily be swapped out for your preferred reverse proxy.
Zero Local Storage Overhead: Eliminates temporary disk storage requirements by processing file streams on the fly.
AWS Marketplace now accepts line of credit payments through the PNC Vendor Finance program. This program is available to select AWS customers in the US, excluding NV, NC, ND, TN, & VT.
Try this product free for 5 days according to the free trial terms set by the vendor. Usage-based pricing is in effect for usage beyond the free trial terms. Your free trial gets automatically converted to a paid subscription when the trial ends, but may be canceled any time before that.
Pricing is based on actual usage, with charges varying according to how much you consume. Subscriptions have no end date and may be canceled any time.
Additional AWS infrastructure costs may apply. Use the AWS Pricing Calculator to estimate your infrastructure costs.
If you are an AWS Free Tier customer with a free plan, you are eligible to subscribe to this offer. You can use free credits to cover the cost of eligible AWS infrastructure. See AWS Free Tier for more details. If you created an AWS account before July 15th, 2025, and qualify for the Legacy AWS Free Tier, Amazon EC2 charges for Micro instances are free for up to 750 hours per month. See Legacy AWS Free Tier for more details.
You pay by the hour for the EC2 instance that runs the zipping server inside your own AWS account. Pricing scales by instance size, not by features. The t2 and t3 families cover general-purpose needs, from nano and micro up through 2xlarge. The c5 family covers compute-focused work, from large through 9xlarge, plus a bare-metal option. Each larger instance adds CPU and memory capacity for heavier workloads, so you choose the size that fits your throughput needs. All options run the same API server; only the underlying hardware and hourly rate differ.
Top-of-mind questions for buyers
What do I get for the hourly rate on each instance type?
You get the EC2 instance running the zipping API server inside your own AWS account. The t2 and t3 families offer general-purpose CPU and memory. The c5 family offers compute-focused capacity, including a bare-metal option. You pick the size matching your workload, and the hourly rate covers that hardware.
Am I charged when the instance is stopped or paused?
Hourly software charges meter the running time of your EC2 instance. A fully stopped instance does not accrue the hourly software charge. You may still pay underlying AWS storage fees for the stopped instance's disk. Charges resume when you start the instance again.
Does the zip size or file count affect my hourly cost?
No. Your bill is driven only by instance size and running hours, not by how much data you zip. The API server lets you split large output into chunks by file size or count, but this does not change the hourly rate. Larger instances simply process heavy workloads faster.
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An AMI is a virtual image that provides the information required to launch an instance. Amazon EC2 (Elastic Compute Cloud) instances are virtual servers on which you can run your applications and workloads, offering varying combinations of CPU, memory, storage, and networking resources. You can launch as many instances from as many different AMIs as you need.
Version release notes
server updates.
Additional details
Usage instructions
S3zipper runs this instance as a Docker Compose stack
Caddy serves ports 80/443 and reverse proxies to the API server, which binds 127.0.0.1:8000; MongoDB (127.0.0.1:27017) stores job state. The stack starts automatically at boot and recovers if a container stops.
Setup instructions
Instance creation - when launching, choose Resource-based naming (RBN) for the hostname under "Advanced details". IP-based naming leaves the instance hostname empty, so generated URLs and share links show the IP instead.
Open the homepage at http://INSTANCE-IP/ and the setup page at http://INSTANCE-IP/settings (it lists every endpoint with copy-ready examples).
Optional domain / HTTPS - edit /home/app/config.yaml (liveconfig.baseurl, liveconfig.usehttps). For TLS also set PROXY_SERVER_NAME/PROXY_HTTPS in /home/app/dockerconfig.env and switch the block in /home/app/Caddyfile, then run sudo systemctl restart docker-compose.
Optional result emails - fill emails.* in /home/app/config.yaml (SMTP host, port, username, password), then restart the unit.
Verify
curl -s http://INSTANCE-IP/v2/health - expect {"status":"healthy", ...} with the AMI ID and public address.
POST /v2/streamzip streams a zip straight to the client and returns a shareable /stream link.
Credentials
Send keys per request (recommended) or hardwire them under awsconfig in config.yaml. The credentials need s3:GetObject on the source bucket and s3:PutObject on the destination bucket.
Logs
/home/app/logs/log.txt - one line per request; rotated at 20 MB, 5 backups, 28 days. Set DEBUG: true in config.yaml for detail.
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ZipperV2 is secure to use for storing data in S3 Buckets because it encrypts and compresses files stored in Amazon S3. ZipperV2 allows for huge file uploads as well as massive file compression and unzipping. Uploading to an S3 bucket requires no prior experience.
What do you dislike about the product?
Even though it is highly safe to store files, it will cost us more if we need to unzip or download files.
What problems is the product solving and how is that benefiting you?
Encrypting and storing massive files. easy to upload