Focus Stacking Online

Focus Stacking Online is a browser tool for photographers who want to combine frames focused at different distances without installing software. It is a sensible fit for macro work and other subjects with limited depth of field, provided the camera and scene stay steady.

Overview

The service blends the sharp regions of multiple pictures into one image. Its workflow is straightforward: add the pictures, choose an alignment method and a reference frame, create the stack, then download the result. That browser-based approach suits people working across laptops and smartphones, while avoiding an installation. The trade-off is that movement or changes in the scene can make the frames harder to combine, so careful capture remains important.

Focus stacks can range from two frames to more than 100. The maker recommends choosing a reference picture based on how much of the object is in focus, giving users a practical way to guide the result. A recent-stacks gallery and social-sharing feature may help users display work, though they are peripheral to the main task.

Key features

• Standard and Beta alignment: Two methods offer a choice for different image sequences. Beta can outperform Standard in some cases, but users should not expect it to be better for every stack.
• Reference picture selection: Users choose a frame to guide the stack, with the maker advising that the amount of the object in focus should inform the choice.
• Online workflow: Add, align, stack and download in a browser, with no software installation required. This favors convenience over a locally installed workflow.
• Gallery and sharing: The homepage describes a recent-stacks gallery and a feature for sharing work to social media.

Pricing

Focus Stacking Online is free: the Free plan costs nothing and covers online focus stacking. No paid tier is needed to use the service, which makes it an easy option to try for occasional or regular stacking. There are no stated seat, quota, trial or renewal terms to weigh.

Platforms

The supported platform is web, and the maker says the service works in a browser on home laptops and smartphones. The directory lists Android, iOS, Linux, macOS and Windows as platforms, but the workflow itself is online rather than a platform-specific installed application.

Who it's for

This is best suited to photographers who want a free way to merge differently focused frames, especially macro photographers working with shallow depth of field. It also makes sense for users who prefer not to install software. Those who need a dependable result from frames with camera shake or changing scenes should look for a workflow better suited to correcting inconsistent captures.

Pros and cons

• Pro — No installation: Stacking runs in a browser, which is convenient on supported laptops and smartphones.
• Pro — Choice of alignment: Standard and Beta give users two methods, with Beta potentially outperforming Standard in some cases.
• Pro — Free access: The core online stacking workflow has a free plan.
• Con — Capture discipline matters: Camera shake and scene variation can make stacking harder, so the service is less appealing when frames are inconsistent.
• Con — No stated security practices or compliance certifications: Users with specific security or compliance requirements have no stated assurance to rely on.

Alternatives

The Focus Stacking Software directory is a useful next stop for comparing more options. Choose CKAN if you want free software for Linux, macOS or Windows and an MIT license. ImageFocus Alpha is another free option across Android, iOS, Linux, macOS and Windows, but it is designed for compatible Euromex camera models. Pick PlaneFuse for free personal or commercial use with web, API and self-hosted platforms as well as desktop systems. ChimpStackr is a free, GPL-3.0 multi-platform focus-stacking option for Linux, macOS and Windows. focus-stack is another free option for those three desktop platforms. ForgePix offers free MIT-licensed software for Linux, macOS and Windows. OpenFocus may suit users who want an MIT-licensed option with a GUI for Windows and macOS and a CLI for Windows, macOS and Linux. Shine Stacker is a free download for Windows, macOS and Linux, with an LGPL-3.0 license.

Verdict

Choose Focus Stacking Online if you want a free, browser-based route to combining differently focused photos, particularly for macro work, and can keep the capture sequence steady. Its no-install workflow and two alignment choices are the main reasons to use it. Look elsewhere if your workflow depends on correcting substantial movement between frames or on stated security and compliance assurances.