Agent skill

Image OCR

Read and transcribe the text visible inside an image file (PNG/JPG/JPEG/WebP/BMP/GIF) using the built-in Windows Media.Ocr OCR engine, with NO external credential or network required.

Custom licenceAuto-check passedMedia & Creative

Install Image OCR

skills CLI

$ npx skills add Tai609/NebulaMat --skill image-ocr -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install Tai609/NebulaMat image-ocr --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/Tai609/NebulaMat.git skills-src && mkdir -p .claude/skills && cp -r skills-src/runtime/skills-bundle/image-ocr .claude/skills/image-ocr && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "image-ocr" agent skill from https://github.com/Tai609/NebulaMat/tree/main/runtime/skills-bundle/image-ocr into .claude/skills/image-ocr/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "image-ocr", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/Tai609/NebulaMat/tree/main/runtime/skills-bundle/image-ocr

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add Tai609/NebulaMat --skill image-ocr -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install Tai609/NebulaMat image-ocr --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Tai609/NebulaMat.git skills-src && mkdir -p .agents/skills && cp -r skills-src/runtime/skills-bundle/image-ocr .agents/skills/image-ocr && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "image-ocr" agent skill from https://github.com/Tai609/NebulaMat/tree/main/runtime/skills-bundle/image-ocr into .agents/skills/image-ocr/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "image-ocr", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add Tai609/NebulaMat --skill image-ocr -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install Tai609/NebulaMat image-ocr --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Tai609/NebulaMat.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/runtime/skills-bundle/image-ocr .cursor/skills/image-ocr && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "image-ocr" agent skill from https://github.com/Tai609/NebulaMat/tree/main/runtime/skills-bundle/image-ocr into .cursor/skills/image-ocr/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "image-ocr", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/Tai609/NebulaMat.git --path runtime/skills-bundle/image-ocr

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add Tai609/NebulaMat --skill image-ocr -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install Tai609/NebulaMat image-ocr --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Tai609/NebulaMat.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/runtime/skills-bundle/image-ocr .gemini/skills/image-ocr && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "image-ocr" agent skill from https://github.com/Tai609/NebulaMat/tree/main/runtime/skills-bundle/image-ocr into .gemini/skills/image-ocr/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "image-ocr", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install Tai609/NebulaMat image-ocr

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add Tai609/NebulaMat --skill image-ocr -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/Tai609/NebulaMat.git skills-src && mkdir -p .github/skills && cp -r skills-src/runtime/skills-bundle/image-ocr .github/skills/image-ocr && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "image-ocr" agent skill from https://github.com/Tai609/NebulaMat/tree/main/runtime/skills-bundle/image-ocr into .github/skills/image-ocr/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "image-ocr", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add Tai609/NebulaMat --skill image-ocr -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install Tai609/NebulaMat image-ocr --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/Tai609/NebulaMat.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/runtime/skills-bundle/image-ocr .opencode/skills/image-ocr && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "image-ocr" agent skill from https://github.com/Tai609/NebulaMat/tree/main/runtime/skills-bundle/image-ocr into .opencode/skills/image-ocr/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "image-ocr", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: image-ocr
GitHub stars: 100
Token cost: ~1.1k tokens
SKILL.md length: 521 words
Files: 2 (incl. scripts)
Skills in repo: 15
Repo updated: Sep 6, 2026
First seen: Oct 7, 2026
Licence: Custom licence

At a glance

Read and transcribe the text visible inside an image file (PNG/JPG/JPEG/WebP/BMP/GIF) using the built-in Windows Media.Ocr OCR engine, with NO external credential or network required.

Works in 4 steps: glob for the image path (e.g.… → If it is outside the current allowed… → Run ocr-image.ps1 on the resolved path. → …
Tasks that involve Transcription
SKILL.md covers When to use, What it CAN and CANNOT do, How to run and Getting the image into the…, plus 3 more sections
Runs PowerShell scripts from its folder; calls pwsh; needs VISION_API_KEY

What it does

Image OCR is an agent skill from Tai609/NebulaMat. Read and transcribe the text visible inside an image file (PNG/JPG/JPEG/WebP/BMP/GIF) using the built-in Windows Media.Ocr OCR engine, with NO external credential or network required. Use this whenever the model cannot read an image directly, the VISIONAPIKEY credential is missing, or the user pastes/attaches a screenshot and asks what it says or what is in it. Also computes image dimensions/format so the agent can describe scene context. English and Chinese (and other installed Windows OCR languages) supported.

Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including scripts.

It sits in Media & Creative, covering Transcription. It works with PowerShell. The repository describes itself as: NebulaMat scientific materials research workbench.

When your agent uses it

Tasks that involve Transcription

Example prompts

“/image-ocr”

Requirements

PowerShell
A credential in VISION_API_KEY

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

glob for the image path (e.g. **/pasted.png).
If it is outside the current allowed workspace, Copy-Item it into the CWD.
Run ocr-image.ps1 on the resolved path.
Merge the OCR lines into a clean reading, fixing obvious character splits

What it can do on your machine

Read from SKILL.md and the folder at commit c906ed5. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 1 file in scripts/ (PowerShell), which the agent can run.
Shell commands in SKILL.md call:
- pwsh
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names these keys or tokens, usually read from environment variables:
- VISION_API_KEY
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Image OCR loads about 1.1k tokens when it runs. Until then it costs about 132 tokens; SKILL.md has 521 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~132
When it runs · the whole SKILL.md, loaded when a task matches: ~1.1k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 521 words (~1,054 tokens).

“This skill gives a text-only agent a fully local, credential-free way to "see" the text inside an image, using the OCR engine that ships with Windows 10/11 (Windows.Media.Ocr). It does not need VISION_API_KEY or any network call.”

— opening of SKILL.md by Tai609, Custom licence

name: image-ocr

Read the full SKILL.md on GitHub

Files

SKILL.md and 1 other file (scripts) in runtime/skills-bundle/image-ocr of Tai609/NebulaMat.

SKILL.md
scripts/ocr-image.ps1

Open the folder on GitHubat commit c906ed5

Compare with similar skills

Image OCR next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Image OCR compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Image OCR this skillTai609/NebulaMat	100	—	~1.1k	Automated safety check: Pass	Custom licence	1 mo ago
Bilibili Page ReaderMisaka-Mikoto-Tech/agent-skills	275	—	~3.6k	Automated safety check: Pass	MIT	17 days ago
Videodbaffaan-m/ECC	275k	3 repos	~3.5k	Automated safety check: Notes	MIT	3 days ago
Edu Math Videowy51ai/edulab	1.4k	—	~2.5k	Automated safety check: Notes	Apache-2.0	10 days ago
Bilibili Transcribechubbyguan/chubbyskills	1.2k	1 repos	~578	Automated safety check: Notes	MIT	2 days ago
Video Assemblezenstory-ai/video-recap-skills	555	1 repos	~1.7k	Automated safety check: Pass	MIT	4 days ago

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More from Tai609/NebulaMat

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Aris Proof Orchestrator
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Electrochemical Adsorption Model Construction
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Mattergen Structure Generation
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Mattersim Relaxation Screening
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Works with

PowerShell

Questions about Image OCR

What does Image OCR do?

Read and transcribe the text visible inside an image file (PNG/JPG/JPEG/WebP/BMP/GIF) using the built-in Windows Media.Ocr OCR engine, with NO external credential or network required. Image OCR is an agent skill from Tai609/NebulaMat.Ocr OCR engine, with NO external credential or network required.

When should I use Image OCR?

Image OCR fits situations like: tasks that involve Transcription.

How do I install Image OCR in Claude Code?

Run `npx skills add Tai609/NebulaMat --skill image-ocr -a claude-code`. Or copy the skill folder (runtime/skills-bundle/image-ocr in Tai609/NebulaMat) into .claude/skills/image-ocr in your project. Claude Code loads it when a task matches its description.

How do I install Image OCR in Codex?

Run `npx skills add Tai609/NebulaMat --skill image-ocr -a codex`. Or copy the skill folder (runtime/skills-bundle/image-ocr in Tai609/NebulaMat) into .agents/skills/image-ocr in your project. Codex loads it when a task matches its description.

Can I use Image OCR in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Tai609/NebulaMat --skill image-ocr -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/image-ocr, .gemini/skills/image-ocr, .github/skills/image-ocr and .opencode/skills/image-ocr in your project.

What does Image OCR need to run?

Going by SKILL.md and its folder, Image OCR needs PowerShell for the scripts in its folder, the command-line tools its instructions call (pwsh) and credentials named VISION_API_KEY. Our summary lists: PowerShell; A credential in VISION_API_KEY.

Does Image OCR access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Image OCR safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Image OCR use?

Image OCR has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Image OCR use?

About 1.1k tokens (SKILL.md is roughly 4.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Image OCR?

Skills that share tags, products or a category with Image OCR: Bilibili Page Reader (Misaka-Mikoto-Tech/agent-skills, 275 stars), Videodb (affaan-m/ECC, 275k stars), Edu Math Video (wy51ai/edulab, 1.4k stars) and Bilibili Transcribe (chubbyguan/chubbyskills, 1.2k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Image OCR?

Tai609 (a GitHub user) maintains it in Tai609/NebulaMat, which has 100 GitHub stars. The repository holds 15 skills in this directory. The repository was last updated on September 6, 2026.

Source: Tai609/NebulaMat on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Image OCR

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Files

Compare with similar skills

Similar skills

More from Tai609/NebulaMat

Related

Questions about Image OCR