# Focus Stacks

Focus stacking in your browser: merge a focus-bracketed series into one photo that is sharp front to back, at full resolution, on any computer, with nothing uploaded. Free, no install.

Contact: support@focusstacks.com
Canonical: https://focusstacks.com/

- [Free focus stacking software — stack photos in your browser](https://focusstacks.com/) — Merge a focus-bracketed series into one photo sharp front to back. Free, no install, on Mac, Windows, Linux or Chromebook; the frames never leave your computer.
- [How to focus stack: shoot a series that merges](https://focusstacks.com/how-to-focus-stack/) — What focus stacking and focus bracketing are, how to shoot a series that will merge (step, overlap, aperture, magnification), and the five things that break a stack.
- [Focus stacking in Photoshop: Auto-Align and Auto-Blend](https://focusstacks.com/focus-stacking-in-photoshop/) — The exact steps for a focus stack in Photoshop with Auto-Align Layers and Auto-Blend Layers, where it produces halos, and when a dedicated stacker does better.
- [Focus stacking in Lightroom: it can't, so do this instead](https://focusstacks.com/focus-stacking-in-lightroom/) — Lightroom does not merge focus stacks. The two routes that exist: the Photoshop round-trip, and exporting the frames to a stacker that runs in your browser.
- [Depth of field calculator with focus-stacking step](https://focusstacks.com/depth-of-field-calculator/) — Near and far limits, hyperfocal distance, and the number other calculators skip: the focus step and frame count a stack needs at your aperture.
- [How Focus Stacks aligns and merges frames](https://focusstacks.com/how-it-works/) — Affine alignment on gradients, a Laplacian-pyramid vote for the sharpest source at every scale, two passes so memory stays flat, and every request the page makes.
- [About Focus Stacks](https://focusstacks.com/about/) — Who makes Focus Stacks, why it runs in the browser rather than on a server, and how it is paid for.
- [Contact Focus Stacks](https://focusstacks.com/contact/) — How to reach Focus Stacks, what to include in a report about a stack that failed, and what response to expect.
- [Privacy — what stays in your browser and what is measured](https://focusstacks.com/privacy/) — Frames never leave the device. What the cookieless analytics counts, what advertising may do after consent, and the network requests the page makes.
- [Terms of use — Focus Stacks](https://focusstacks.com/terms/) — The terms under which the stacker and the calculator are offered: free, as-is, your files are yours.
- [Cookies and browser storage — Focus Stacks](https://focusstacks.com/cookies/) — The stacker stores nothing. Analytics sets no cookie. Advertising, when switched on, may — after you choose.
- [Licences and attributions — Focus Stacks](https://focusstacks.com/licenses/) — The open-source material this site carries and the licences it carries it under.
- [Site map — Focus Stacks](https://focusstacks.com/sitemap/) — Every page on Focus Stacks, grouped by what it is for: the stacker, the calculator, the guides and the legal pages.