What Is a Pull Request?
A pull request is a proposal to merge a set of code changes into a shared project, submitted for review before it is accepted. A developer works on their changes separately, then opens a pull request asking teammates to review, discuss, and approve the work before it becomes part of the main codebase. It is the standard way teams using Git and platforms like GitHub or GitLab ship changes safely, with oversight, automated tests, and a written record. The term is sometimes called a merge request on GitLab.
- What it is
- A request to merge one branch of code changes into another, reviewed first
- Also called
- A merge request on GitLab; a pull request on GitHub and Bitbucket
- Core benefit
- Enables code review and automated checks before changes go live
- Built on
- Git branching, where work happens on a copy before merging (Git docs)
- Common checks
- Linting, tests, and builds run automatically on each request (GitHub docs)
- Leaves a record
- Every change keeps a discussion trail and approval history
What a pull request actually is #
A pull request, often shortened to PR, is a formal proposal to add a batch of code changes into a shared project. Rather than editing the main codebase directly, a developer makes their changes on a separate copy, called a branch, then opens a pull request that says, in effect, please review these changes and, if they look good, merge them in. The request bundles together everything that changed, a description of why, and a space for teammates to comment line by line, ask questions, and request adjustments. Nothing enters the main codebase until someone approves. This simple gate is the backbone of how modern software teams collaborate without stepping on each other or shipping careless mistakes. It works on top of Git, the version-control system most developers use, and is offered by hosting platforms like GitHub, GitLab, and Bitbucket. For a business, pull requests are why a well-run development team can change a live site frequently without it constantly breaking; our /services/web-app-development process is built around them.
Why teams review before merging #
The core purpose of a pull request is oversight. Letting any developer push changes straight into the live codebase is fast but dangerous, because a single unnoticed mistake can break a site for every visitor. A pull request inserts a deliberate pause: at least one other person, and usually a suite of automated tests, examines the change before it is accepted. That catches bugs, security issues, and design problems while they are still cheap to fix. Review also spreads knowledge, since teammates learn how different parts of the system work by reading each other's changes, which reduces the risk of one person being the only one who understands a critical area. It creates accountability and a written record too, so months later anyone can see what changed, why, and who approved it. This discipline is what separates a resilient codebase from a fragile one. If your current site breaks every time it is touched, a lack of review process is a frequent cause our /services/website-rescue work uncovers.
How the pull-request workflow flows #
The typical flow follows a clear sequence. First, a developer creates a branch, a separate line of work copied from the main code, so their changes stay isolated. They make and save their edits as commits, each a labeled snapshot of what changed. When the work is ready, they push the branch to the shared platform and open a pull request describing the change and its purpose. Teammates then review it, leaving comments and requesting adjustments; the author pushes further commits to address feedback, and the pull request updates automatically. Meanwhile, automated checks run in the background. Once reviewers approve and all checks pass, someone merges the pull request, folding the changes into the main codebase, and the branch is usually deleted. The site can then be deployed with confidence. This cycle repeats for every change, large or small. It sounds elaborate, but for a team it becomes fast and routine, and it is the foundation of the safe, ongoing updates our /services/care-plans provide.
The Git steps behind a pull request #
Before opening a pull request on GitHub or GitLab, a developer runs a short sequence of Git commands to isolate and save the work.
# Start a new branch for the change
git checkout -b fix-contact-form
# Make edits, then stage and commit them
git add .
git commit -m "Fix validation on the contact form"
# Push the branch to the shared platform
git push origin fix-contact-form
# Then open the pull request in GitHub/GitLab and request reviewAutomated checks on every request #
Modern pull requests do more than gather human opinions; they trigger automated checks that must pass before merging. This is part of continuous integration. When a pull request opens or updates, a shared server automatically runs the project's linters, test suites, and build process against the proposed changes (GitHub docs). If a test fails or the code will not build, the pull request is marked as failing, and most teams block merging until it is green. This means broken code is caught by machines, instantly and impartially, before any human even finishes reviewing. It removes a huge class of mistakes and lets reviewers focus on design and intent rather than hunting for obvious errors. These checks can also include security scans, performance budgets, and preview deployments that let reviewers click through the change on a live test URL. Together, human review and automated checks form a strong safety net. This layered discipline is why professionally maintained sites change often yet rarely break, and it is central to how our /services/web-app-development team ships work.
Pull request versus merge request #
You will hear two terms for the same core idea, which trips up newcomers. GitHub, the most popular platform, calls it a pull request, named because you are asking the project to pull in your changes. GitLab calls the identical concept a merge request, arguably a clearer name since the goal is to merge your branch. Bitbucket also uses pull request. Whichever label appears, the mechanics are the same: a proposed change, submitted for review and automated checks, that gets discussed, refined, approved, and merged. The naming difference is purely historical branding, not a difference in function. Knowing both terms saves confusion when reading documentation or moving between tools. It is a good example of how developer jargon can make a simple idea sound like two different things. Our /wiki library exists partly to cut through exactly this kind of vocabulary overlap, so that when a developer mentions a merge request or a pull request, you know they are describing the same reviewed path for changing your site's code.
What makes a good pull request #
Not all pull requests are equal, and the good ones share habits worth knowing even as a non-developer, because they affect how fast and safely your project moves. The strongest pull requests are small and focused, changing one thing at a time, which makes them easy to review carefully and easy to undo if something goes wrong. Sprawling requests that touch dozens of unrelated files are hard to review well, so problems slip through. A good pull request also carries a clear description explaining what changed and why, so reviewers and future readers understand the intent without guessing. Prompt, constructive review matters too; a request left sitting for days stalls progress. Teams that follow these habits ship steadily with few surprises. If you work with a developer, seeing tidy, well-described pull requests is a healthy sign, while giant, unexplained ones hint at rushed or risky work. Our /services/care-plans emphasize this disciplined, small-batch approach so your site evolves safely rather than in scary, all-at-once lurches.
Why pull requests matter to your project #
As a business owner you will never open a pull request, but the practice directly affects the reliability and cost of your site. A team using pull requests can change your site frequently, review every change, catch problems before they go live, and keep a full history of who changed what and why. That history is invaluable when something breaks, when a new developer joins, or when you need to understand how a feature was built. It also protects you if a developer leaves, because the work and its rationale are documented rather than trapped in one person's head. When commissioning custom work, it is reasonable to ask whether the team uses version control and pull requests; a professional will, without exception. A developer editing your live site directly with no review or history is a genuine risk. If you have inherited a site with no version control at all, our /services/website-rescue work can establish a proper, reviewable workflow so future changes stop being a gamble.
The bottom line on pull requests #
A pull request is a proposal to merge code changes into a shared project after review, and it is the standard, safe way modern teams ship changes. A developer works on an isolated branch, opens the request, and teammates plus automated checks review it before anything is merged into the main codebase. GitLab calls the same thing a merge request, but the mechanics are identical. The payoff is oversight, early error-catching, shared knowledge, and a complete written history, which together let a site change often without constantly breaking. For a business, the presence of this workflow is a reliable sign of professional, low-risk development, and its absence is a warning. You do not manage pull requests yourself; you simply benefit from working with a team that uses them well. To discuss building or rescuing a site with a proper reviewed workflow, see our /services/web-app-development page or reach a real person through /contact.
FAQ
What is a pull request in simple terms?
A pull request is a proposal to add code changes to a shared project after someone reviews them. A developer makes changes on a separate branch, then opens a pull request asking teammates to review, discuss, and approve before merging into the main code. It is how teams ship changes safely with oversight.
What is the difference between a pull request and a merge request?
None in practice; they are the same concept under different names. GitHub and Bitbucket call it a pull request, while GitLab calls it a merge request. Both describe a proposed set of code changes submitted for review and automated checks before being merged into the main codebase. The naming is just historical branding.
Why are pull requests important?
They add a review step before changes reach the live codebase, catching bugs, security issues, and design problems while they are cheap to fix. They also spread knowledge across a team, create accountability, and leave a written history of every change. This oversight lets a site change frequently without constantly breaking.
Do pull requests run tests automatically?
Usually, yes. When a pull request opens or updates, a continuous-integration server can automatically run linters, tests, security scans, and the build. If any fail, most teams block merging until the problems are fixed. This means broken code is caught by machines instantly, before a human reviewer even finishes reading the change.
Who approves a pull request?
Typically one or more teammates other than the author review and approve it, so no one merges their own unchecked work. Many teams require a set number of approvals plus passing automated checks before merging is allowed. On smaller teams a lead developer usually reviews, ensuring a second set of eyes on every change.
Can a pull request be rejected?
Yes. Reviewers can request changes, and a pull request stays open until the author addresses the feedback or the team decides not to proceed. Some requests are closed without merging if the change is no longer wanted. This ability to say not yet is exactly what makes the review process valuable for quality and safety.
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