What is a Changelog?

Ruben Buijs
Ruben Buijs
July 14, 2023
What is a Changelog?

Table of contents

Welcome to the exciting journey of understanding 'What is a Changelog?'

It's the backstage pass to software development, tracking every update, bug fix, and tweak while keeping everyone, from coders to users, in the loop.

Let's dive into this software diary, shall we?

What is a changelog?

A changelog is a document that tracks and describes the changes made to a software project or product over time.

It serves as a historical record of updates, enhancements, bug fixes, and other modifications made to the software.

Changelogs are often used in open-source projects but can also be found in proprietary software.

The changelog typically includes important information such as the version number, date of release, and a summary of the changes made.

It enables developers and users to understand the evolution of the software and stay informed about the latest updates.

Changelogs can be in various formats, such as plain text files or structured documents.

They are essential to software development and release processes, providing transparency and accountability for the changes made to a software product or project.

Unlike release notes, which often highlight new features or major updates, a changelog focuses on providing a comprehensive list of all changes, including minor updates, bug fixes, security patches, and more.

This level of detail allows developers and users to understand the progression of a software project and track specific issues or changes.

A changelog aims to provide a clear and transparent overview of the development process and enable stakeholders to stay informed about the latest changes.

It helps developers keep track of their progress, manage feature requests, and address potential bugs or errors. In addition, changelogs facilitate collaboration among team members by providing a central documentation source

Benefits of Using a Changelog

Using a changelog provides several benefits in software development, enhancing collaboration and streamlining the development process.

One of the primary advantages is its ability to serve as a historical reference, allowing developers to track changes across different versions.

By documenting every modification, developers can easily reference past updates and understand the progression of the software project.

It is a vital tool for historical reference, tracking changes, providing comprehensive information, and promoting collaboration among team members.

Detailed info about changes

Additionally, a changelog helps ensure comprehensive and detailed information about each change is recorded.

This includes notable changes, bug fixes, and deprecations.

This level of detail aids developers in addressing potential issues, managing feature requests, and troubleshooting errors.

Organization helps to collaborate

Organizing the changelog in a readable format and providing clear categories for different changes brings further benefits.

It facilitates swift navigation and comprehension of the document, enabling stakeholders to find the information they need quickly.

With an organized changelog, developers can easily identify the specific updates or issues they are interested in and efficiently collaborate with team members.

Example of a changelog

Who needs a changelog?

A changelog is an essential tool for any software project, serving as a centralized location to document and communicate all updates, changes, and bug fixes.

Both consumers and developers need it for different reasons. You can find more about it on Wikipedia.

For consumers, having a changelog provides clear and transparent communication about software updates.

It lets them stay informed about the latest features, improvements, and bug fixes, ensuring they take full advantage of the software's capabilities.

Developers also greatly benefit from having a changelog.

It serves as an organized record of all software changes, helping them manage feature requests, track bug fixes, and troubleshoot errors.

Moreover, a changelog encourages feedback and collaboration from the community, enabling developers to address potential issues and improve the software based on user suggestions.

Types of Changelogs

Several types of changelogs can be used in different contexts, such as software projects and open-source projects.

Each type serves a specific purpose and is relevant in managing various aspects of development, including feature requests, bug fixes, and security issues.

One common type of changelog is the standard text-based format.

This type typically includes a chronological list of changes, with each entry containing the version number, release date, and a description of the updates.

Standard text-based changelogs are widely used in software projects and provide a comprehensive overview of the changes made to the software, making it easier for developers and users to track the progression of the product.

Text based changelog in WordPress for the Boei plugin

Another type is the commit-based changelog app, which is commonly used in open-source projects.

This type is generated automatically based on the commit messages submitted by developers.

Commit-based changelogs provide a detailed history of the changes made to the codebase, allowing for better collaboration and transparency within the development community.

How to Create and Maintain a Changelog

Creating and maintaining a changelog is essential for keeping track of the changes and updates made to a software project.

Follow these guidelines to create and maintain a changelog effectively:

  1. Start with the latest version: Begin by listing the most recent version of your software at the top of the changelog. This ensures that readers can quickly identify the latest changes.
  2. Chronological order: List the version descriptions chronologically, starting with the most recent version and moving toward older versions. This allows developers and users to track the progression of the software easily.
  3. Include key details: For each version, provide the release date, a summary of the changes made, and any additional relevant information. This helps users understand the updates and improvements made in each version.
  4. Standardized changelog format: Use a standardized format for your changelog, such as bullet points or a table, to make it easy for readers to understand and navigate. Consistency in formatting ensures that the changelog is clear and accessible.

You can find some best practices for managing changelogs here.

Changelogs Vs. Release Notes

Changelogs and release notes serve similar purposes - informing users about updates and changes to a software product.

However, they are not the same thing and have distinct characteristics.

A good reference for more details is available on Atlassian's site.

Where do you put the changelog?

Changelogs serve as an essential communication tool for software updates, providing detailed information about the changes made in each version. But where exactly do you put a changelog?

Traditionally, changelogs were placed in blog posts or documentation, allowing developers to share the technical details of the updates with their audience.

Nowadays, with the rise of open-source projects, changelogs can also be found in GitHub repositories. This allows for easy tracking of changes and facilitates collaboration through pull requests. This is mainly aimed at the development team.

For customers, you see more and more a central platform to collect feedback, share a roadmap, and announce update in the changelog.


Example of a developer changelog in GitHub

Use Cases for Changelogs

Changelogs serve a vital purpose in software development by providing a comprehensive record of changes and updates made to a software project. They can be utilized in various use cases to enhance collaboration, facilitate bug tracking, and improve the overall development process.

Firstly, changelogs are essential in the release management process. They allow developers to document the changes made in each release version, including new features, bug fixes, and security patches. By maintaining an organized and detailed changelog, developers can easily track and communicate a software project's progress to internal teams and external stakeholders.

Changelog appsalso provide valuable information for bug tracking and debugging. When users encounter issues or errors after an update, they can refer to the changelog to identify any recent changes that may have caused the problem. This helps developers narrow down the potential causes and aids in efficient debugging and issue resolution.

Additionally, changelogs are invaluable in open-source projects where multiple contributors are involved. They enable clear communication between developers by providing a centralized platform for managing contributions, feature requests, and code reviews. Changelogs allow contributors to understand the changes made by other team members, enabling smoother collaboration and reducing the chances of code conflicts.

Moreover, changelogs can also be used as a roadmap for the future development of a software product. By documenting proposed features and planned updates, developers can refer to the changelog to stay on track and ensure that the story aligns with the product roadmap.

In conclusion, changelogs play a crucial role in software development by providing a structured and organized record of changes and updates. Whether for release management, bug tracking, collaboration in open-source projects, or future planning, changelogs serve as a central source of information that enhances the development process and improves overall communication and collaboration within development teams.

Software Projects

Using a changelog app in software projects offers several key considerations and benefits. Firstly, it provides a comprehensive record of changes made to the software, including new features, bug fixes, and security patches. This allows developers to track and communicate the project's progress to internal teams and external stakeholders.

A well-maintained changelog also facilitates bug tracking and debugging. When users encounter issues or errors, they can refer to the changelog to identify recent changes that may have caused the problem. This helps developers quickly narrow down potential causes and resolve issues efficiently.

Furthermore, a changelog acts as a centralized platform for managing contributions, feature requests, and code reviews in open-source projects with multiple contributors. It enables clear communication between developers, reduces code conflicts, and fosters smoother collaboration.

Tracking project metrics is crucial for measuring productivity and addressing bugs and errors effectively. Developers can obtain valuable insights into the project's performance by including information such as commit messages, pull requests, and development patterns in the changelog.

Additionally, a well-maintained changelog serves as a valuable resource for future projects. It enables businesses to learn from past mistakes, identify successful implementations, and make informed decisions for future development.

In conclusion, using a changelog in software projects not only aids in release management and bug tracking but also provides valuable insights for future projects and facilitates collaboration between developers. Businesses can continuously improve their products and services by tracking project metrics and maintaining a well-documented changelog.

Open-Source Projects

Open-source projects thrive on collaboration and transparency. One essential tool that facilitates this process is the changelog. By keeping a well-maintained changelog, open-source projects can enhance organizational productivity and improve future projects.

Changelogs in open-source projects play a significant role in tracking project metrics. By including information such as commit messages, pull requests, and development patterns, teams can analyze their performance and measure their productivity. This valuable insight allows them to identify areas for improvement and streamline their workflows.

Furthermore, a changelog is a centralized platform for managing feature requests and bug fixes. By documenting all changes, developers can easily track and prioritize feature requests, ensuring that they are addressed promptly. It also helps identify and address security issues promptly, ensuring the integrity and safety of the project.

Moreover, a well-maintained changelog enables teams to learn from past mistakes and successful implementations. Reviewing past entries allows developers to gain valuable knowledge and avoid repeating errors in future projects. They can also identify successful strategies and implementations that can be replicated in new endeavors, leading to more efficient and successful outcomes.

In conclusion, using changelogs in open-source projects has numerous benefits. From tracking project metrics, addressing feature requests and bug fixes, learning from past experiences, and optimizing future projects, a well-maintained changelog enhances organizational productivity and fosters continuous development.

Feature Requests and Bug Fixes

Feature requests and bugs in a list at ProductLift

Feature requests and bug fixes can be effectively managed and documented in a changelog by following a systematic approach.

To track and prioritize feature requests, it is essential to have a clear process in place. Teams can use a dedicated platform or issue tracker to collect and organize feature requests. These requests should then be reviewed and prioritized based on user demand, potential impact, and alignment with the product roadmap. Once prioritized, the feature requests can be assigned to the relevant team members for implementation.

Similarly, addressing and fixing bugs also requires a structured approach. Teams can utilize bug-tracking tools to receive, track, and manage bug reports efficiently. It is crucial to thoroughly investigate and reproduce the reported bugs to understand the underlying causes. Once identified, developers can fix the bugs and test the solutions to ensure their effectiveness.

Properly documenting these changes in the changelog is vital for transparency and collaboration. Changelog entries should include the details of the feature requests or bugs addressed and the corresponding commit messages or pull request references. Additionally, teams can include any technical details or notable considerations related to the changes. This comprehensive documentation ensures that all stakeholders know about the changes and facilitates future reference.

By managing and documenting feature requests and bug fixes in a changelog, teams can streamline their development processes, collaborate more effectively, and deliver high-quality software products.

Security Issues in Larger Projects

In larger software projects, addressing security issues is of paramount importance. These projects, especially those with a significant user base, are more susceptible to potential security vulnerabilities. Failing to address these issues can have severe consequences, including data breaches, compromised user accounts, and reputational damage.

One of the challenges in addressing security issues in larger projects is the sheer magnitude of the task. With complex codebases and numerous dependencies, identifying and fixing vulnerabilities can be a daunting process. Moreover, as projects evolve and new features are added, existing security measures may need to be updated or noticed. This highlights the need for a systematic approach to security maintenance.

A well-maintained changelog is crucial in efficiently identifying and resolving security issues. The changelog provides a historical record of the project's security measures by documenting all changes, including security-related updates and fixes. This enables developers, security auditors, and stakeholders to track and understand the security enhancements made over time easily.

The changelog is a roadmap for identifying potential vulnerabilities and assessing their impact. It helps in prioritizing security-related tasks and allocating resources accordingly. By referencing the changelog, developers can quickly locate the specific security-related changes and verify if they have been correctly implemented. This ensures that security measures are diligently applied and maintained throughout the project's lifecycle.

Furthermore, a well-maintained changelog facilitates collaboration among team members and encourages transparency. It allows security researchers and external contributors to easily access and review the history of security-related updates, fixes, and vulnerabilities. This strengthens the project's credibility and provides an avenue for ongoing vigilance and improvement.


Tips for Creating an Effective SaaS Changelog

๐Ÿ”Ž Make it easy to find.

Your changelog should be easy for customers to access and understand. This means it should be prominently displayed on your website or product documentation and be clear and concise.


๐Ÿ‘ทโ™‚๏ธ Keep it up-to-date.

Update your changelog regularly with new changes and releases. This helps customers stay informed about the latest updates to your product, and it helps build trust by demonstrating that your product is actively being improved.


๐Ÿ’ฌ Use clear and concise language.

Your changelog should be easy for customers to understand, even if they need to be more technical experts. Avoid using technical jargon and focus on explaining the benefits of the changes being made.


๐Ÿ‘จ๐Ÿ”ง Be specific.

In addition to explaining the benefits of the changes being made, be clear about what those changes are. This helps customers understand exactly what has been updated and how it may impact their use of your product.


๐Ÿ’ผ Organize by version or release.

It's helpful to organize your changelog by version or release, so customers can easily see the changes made in each update. This also makes it easier for you to track and manage your changelog over time.


By following these tips, you can create an effective SaaS changelog that helps keep your customers informed and engaged with your product. By regularly updating your changelog and being transparent about the changes you're making, you can build trust with your customers and demonstrate the value of your product.



In this article, we talked about how changelogs help in teamwork and fixing problems in software development.

Changelogs are used as a detailed record for watching project progress and handling security issues.

Using changelogs helps to make things clear and improve software projects.


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