PreviewDrop Docs

A live URL for every branch — and every pull request. If it runs in Docker, PreviewDrop previews it.

New here?

The fastest path is the Quickstart: connect a Git provider, pick a repo, and push a branch. You'll get a preview URL within a couple of minutes. If your repo already has a Dockerfile, it works out of the box. If not, PreviewDrop auto-detects the stack and builds it for you.

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Quickstart

Connect a repo, push a branch, get a preview URL. 5 minutes.

Core concepts

Projects, deployments, branches, TTL, and how the pipeline works.

Frameworks & Docker

Django, Rails, Laravel, FastAPI — and any Dockerfile.

Environment variables

Per-project secrets, encrypted at rest, injected at container start.

Git integration

GitHub, GitLab, and Bitbucket — auto-deploy every push.

Sharing previews

Password-protect URLs, email them to reviewers, embed in PRs.

CLI

One command, any Dockerfile, a preview URL. Works in CI.

API reference

Trigger deploys and fetch logs from your own automation.

Troubleshooting

Failed builds, port binding, missing env vars, stuck deploys.

What PreviewDrop does

PreviewDrop gives every Git branch its own live, reachable URL. Push a commit, get a preview. Merge or close the branch, the preview disappears. You don't have to learn Kubernetes, write YAML, or maintain a staging cluster. Under the hood it builds your repo into a Docker image and runs it as a container behind a TLS-terminated subdomain.

Works with any framework that runs in Docker — Django, Rails, Laravel, FastAPI, Spring Boot, Node, Go, and more.
Auto-detects common stacks when you don't have a Dockerfile.
Previews auto-expire based on your plan's TTL. No surprise bills for forgotten containers.
Password-protect any URL, share with reviewers via email, or embed a status badge in your PR.

Getting help

Stuck on something? Email support@previewdrop.dev — we answer every message. For build failures, the Troubleshooting page covers the most common causes.