Freedom251 › Screenshot Annotation Software

Tensaku

Paid Linux

What Tensaku is

Tensaku is a free, open-source Linux screenshot annotation tool for Wayland desktops. It captures visible screens and can extend captures vertically or horizontally, stitching frames into one image. Annotations remain editable after drawing: users can select, move, resize and nudge them. A layer panel reorders, locks, hides and renames items, with drag-and-drop organization. Tools include arrows, rectangles, ellipses, lines, brush, text, blur, highlighting and cropping. Blur choices include Pixelate, Secure Blur, Gaussian and Black Out, with irreversible variants for sensitive material. Images can be saved as PNG, JPEG or WebP, copied to the Wayland clipboard or piped to stdout. Tensaku runs on compositors implementing wlr-layer-shell and wlr-screencopy, including Sway, Hyprland, river and Wayfire. Installation options include an Arch Linux AUR package, an x86_64 release tarball, Cargo installation or source builds. Source builds require Rust 1.75 or newer and GTK4 development headers. Shortcuts are configurable in Preferences or ~/.config/tensaku/config.toml. The software is released under the Mozilla Public License 2.0.

Who it suits

Tensaku suits Linux users running compatible Wayland compositors who need editable annotations, scrolling captures and redaction tools. It is also suitable for users comfortable with AUR, binaries, Cargo or source installation.

What it does well

Scrolling captures stitch beyond the viewport
Annotations remain movable and resizable
Layer panel organizes annotation objects
Exports PNG, JPEG and WebP
Includes irreversible redaction variants

What to know first

Linux and supported Wayland compositors required
Source builds require Rust 1.75+ and GTK4 headers
Compatibility depends on wlr protocols

Verdict

Tensaku provides a broad annotation set with editable layers and stitched scroll captures. Its Wayland and Linux requirements define where it can run.

Facts from Tensaku's own pages

Annotation tools: Available tools include arrows, rectangles, ellipses, lines, brush, text, blur, highlighting, and cropping. · tensaku.dev, 12 Oct 2026
Build requirements: Building from source requires Rust 1.75+ and GTK4 development headers. · tensaku.dev, 12 Oct 2026
Compositors: Tensaku runs on Wayland compositors implementing wlr-layer-shell and wlr-screencopy, including Sway, Hyprland, river, and Wayfire. · tensaku.dev, 12 Oct 2026
Compositor support: It runs on Wayland compositors implementing wlr-layer-shell and wlr-screencopy, with Sway, Hyprland, river, and Wayfire listed as examples. · tensaku.dev, 12 Oct 2026
Configuration: Keyboard shortcuts are configurable through the Preferences dialog or ~/.config/tensaku/config.toml. · tensaku.dev, 12 Oct 2026
Distribution: The site documents Arch Linux AUR installation, an x86_64 Linux release tarball, cargo installation, and building from source. · tensaku.dev, 12 Oct 2026
Export formats: PNG, JPEG, WebP · tensaku.dev, 20 Sept 2026
Image output: The app can save PNG, JPEG, or WebP files or copy directly to the Wayland clipboard. · tensaku.dev, 12 Oct 2026
Integration: The maker describes compatibility with Sway and Hyprland and documents wiring Tensaku into Omarchy screenshot keys. · tensaku.dev, 12 Oct 2026
Integrations: The site describes an Omarchy setup command and screenshot workflows using grim and slurp on other Wayland compositors. · tensaku.dev, 12 Oct 2026
Layer panel: The layer panel can reorder, lock, hide, rename, and drag-and-drop annotations. · tensaku.dev, 12 Oct 2026
License: Tensaku is released under the Mozilla Public License 2.0. · tensaku.dev, 12 Oct 2026
Linux distribution: The maker offers an Arch Linux AUR package, an x86_64 Linux release tarball, and installation from source with Cargo. · tensaku.dev, 12 Oct 2026
Maker: The site credits the Tensaku fork to Jon Kinney. · tensaku.dev, 12 Oct 2026
Measurement tools: Yes · tensaku.dev, 20 Sept 2026
Movable annotations: Annotations can be selected, moved, resized, and nudged after they are drawn. · tensaku.dev, 12 Oct 2026
Output: Tensaku can save PNG, JPEG, or WebP files, copy to the Wayland clipboard, or pipe output to stdout. · tensaku.dev, 12 Oct 2026
Product: Tensaku is a Wayland screenshot annotation tool. · tensaku.dev, 12 Oct 2026
Purpose: Tensaku is a Wayland screenshot annotation tool for marking up screens, stitching tall captures, and moving annotations after drawing them. · tensaku.dev, 12 Oct 2026
Redaction: Blur styles include Pixelate, Secure Blur, Gaussian, and Black Out, with irreversible variants for sensitive content. · tensaku.dev, 12 Oct 2026
Scroll capture: Scroll Capture captures beyond the visible viewport vertically or horizontally and stitches the frames into one screenshot. · tensaku.dev, 12 Oct 2026

Where Tensaku stands on Freedom251

Screenshot Annotation Software#76 of 76