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Comprehensive command-line tools for modifying and manipulating images, such as resize, blur, crop, flip, and many more.
Install with Codex or Claude Copy this prompt, paste it into Codex, Claude, or another assistant, and let it review the skill page and install it for you.
Based on SOC occupation classification
SkillsBench contribution workflow. Use when: (1) Creating benchmark tasks, (2) Understanding repo structure, (3) Preparing PRs for task submission.
SkillsBench task authoring — walk a contributor from idea to submission-ready task following CONTRIBUTING.md and the task-implementation rubric. Use when the user wants to create a new SkillsBench task, scaffold a task from an existing workflow (notebook, Excel workbook, document, dataset), convert a prompt or a benchmark item into a SkillsBench task, write skills for a task, or prepare a SkillsBench PR. Pairs with `task-review` (run that as a self-check before submitting).
SkillsBench task PR review — classifies the task track (standard / research / multimodal), runs static policy checks against the track-specific rubric, benchmarks the task across oracle plus Claude and Codex (with and without skills), audits trajectories for cheating and skill invocation, and produces a `pr-N-task-timestamp-run.txt` review report alongside a `prN.zip` bundle of trajectories. Use when reviewing a SkillsBench task PR (by number, branch, or local task path), when the user asks to review a task, run benchmarks on a PR, audit a submission, classify a task as research or multimodal track, or prepare a comment to post on a SkillsBench PR.
Methodology for clause-by-clause review of a contract against a structured deviation policy ("playbook"). Covers how to walk a playbook, locate the matching provision in the contract, apply rule types (max-value, must-be-present, must-be-absent, acceptable-set, must-have-feature), classify the result (ok / risk / reject), choose the prescribed action, and ground each finding in a verbatim excerpt. Use whenever reviewing any contract — NDA, MSA, vendor DD questionnaire, lease, DPA — against a structured rules-based playbook.
Reference for the standard clauses found in commercial non-disclosure agreements (mutual and one-way) — what each clause does, the surface forms it appears in, and how to recognise it in unfamiliar drafting. Use when reviewing, comparing, or extracting provisions from any confidentiality / NDA / mutual NDA / standstill-and-confidentiality agreement.
Read Microsoft Excel (.xlsx) files robustly with `openpyxl` (or `pandas`). Covers multi-sheet workbooks, header rows, empty cells, merged cells, comma-separated list cells, and converting a sheet to a list-of-dicts the rest of your code can consume. Use when a task input or reference document is an `.xlsx` file rather than JSON/CSV.
| name | image-editing |
| description | Comprehensive command-line tools for modifying and manipulating images, such as resize, blur, crop, flip, and many more. |
| license | Proprietary. LICENSE.txt has complete terms |
This guide covers essential image processing operations using ImageMagick, a collection of command-line tools that can be applied to modify and manipulate images. With this toolkit, you can edit images in batch on Linux command-line.
Use the convert command to resize an image, blur, crop, despeckle, dither, draw on, flip, join, re-sample, and much more.
Example Usage We list a few examples of the command here to illustrate its usefulness and ease of use. To get started, let's reduce the size of our rose:
convert -resize 50% rose.jpg
You can resize all your JPEG images in a folder to a maximum dimension of 256x256 with this command:
convert -resize 256x256 *.jpg
Finally, we convert all our PNG images in a folder to the JPEG format:
convert -format jpg *.png
Here image files 1.png, 2.png, etc., are left untouched and files 1.jpg, 2.jpg, etc., are created. They are copies of their respective PNG images except are stored in the JPEG image format.
Useful image operations and their corresponding command:
-auto-orient
Adjusts an image so that its orientation is suitable for viewing (i.e. top-left orientation). This operator reads and resets the EXIF image profile setting 'Orientation' and then performs the appropriate 90 degree rotation on the image to orient the image, for correct viewing.
-background <color>
Set the background color. The color is specified using the format described under the -fill option. The default background color (if none is specified or found in the image) is white.
-blend <geometry>
Blend an image into another by the given absolute value or percent. Blend will average the images together ('plus') according to the percentages given and each pixels transparency. If only a single percentage value is given it sets the weight of the composite or 'source' image, while the background image is weighted by the exact opposite amount. That is a -blend 30% merges 30% of the 'source' image with 70% of the 'destination' image. Thus it is equivalent to -blend 30x70%.
-blue-shift <factor>
Simulate a scene at nighttime in the moonlight. Start with a factor of 1.5
-blur radius
-blur radius{xsigma}
Reduce image noise and reduce detail levels. Convolve the image with a Gaussian or normal distribution using the given Sigma value. The formula is:
$$
G(u, v) = \frac{1}{2\pi\sigma^2}e^{-(u^2+v^2)/(2\sigma^2)}
$$
The sigma value is the important argument, and determines the actual amount of blurring that will take place.
-bordercolor color
Set the border color. The color is specified using the format described under the -fill option. The default border color is #DFDFDF, this shade of gray.
-border <value%>
Surround the image with a border of color. value % of width is added to left/right and value % of height is added to top/bottom
-brightness-contrast brightness
-brightness-contrast brightness{xcontrast}{%}
Adjust the brightness and/or contrast of the image. Brightness and Contrast values apply changes to the input image. They are not absolute settings. A brightness or contrast value of zero means no change. The range of values is -100 to +100 on each. Positive values increase the brightness or contrast and negative values decrease the brightness or contrast. To control only contrast, set the brightness=0. To control only brightness, set contrast=0 or just leave it off. You may also use -channel to control which channels to apply the brightness and/or contrast change. The default is to apply the same transformation to all channels.
-channel type
Specify those image color channels to which subsequent operators are limited. Choose from: Red, Green, Blue, Alpha, Gray, Cyan, Magenta, Yellow, Black, Opacity, Index, RGB, RGBA, CMYK, or CMYKA.
-contrast
Enhance or reduce the image contrast.
-colorspace value
Set the image colorspace.
Required dependencies (install if not available):
sudo apt install imagemagick to install. After that, you can use convert command.