Equalang

Translate whole files with Equalang, keeping their layout - documents (PDF, DOCX, PPTX, XLSX, EPUB, HTML, TXT), subtitles (SRT, VTT), pictures, and audio or video (which come back as translated subtitles) - and transcribe recordings into timed text. Use when the user points at a FILE or a URL of one and wants it translated or transcribed, or wants strings translated in bulk; not for a sentence you can translate yourself.

55 starsDocuments & Office Files

Install

skills CLI (Claude Code, Cursor, Codex and more)

npx skills add equalang/equalang-skill --skill equalang

Manual install

git clone --depth 1 https://github.com/equalang/equalang-skill.git /tmp/equalang-skill
mkdir -p ~/.claude/skills
cp -r /tmp/equalang-skill/. ~/.claude/skills/equalang

Personal skills live in ~/.claude/skills. Use .claude/skills in a project folder to share a skill with your team.

From the SKILL.md

# Equalang

Point it at a file and it uploads the file, waits for the job, and writes the results beside the source. You get paths back, **never the file's contents** - layout, tables, images and formulas survive, and nothing large enters the conversation.

**Work spends the user's credits. Say what it will cost and get their agreement before `translate` or `transcribe`.** `estimate` gives the number for a file, for free. PDF formula optimization is off by default and adds 10 credits per original PDF page at the default rate. If enabling it, pass `--optimize-math-formula` to both `estimate` and `translate`; `credits_to_translate` then includes the surcharge. Never enable it without an available page quote.

## Setup

The key is one line, `EQUALANG_API_KEY=el_...`, in `~/.config/equalang/.env` (under `$XDG_CONFIG_HOME` if that is set): one file per machine, shared with the Equalang MCP server and kept when this skill is reinstalled or updated. The user creates the key at https://equalang.com/api-keys.

```bash
dir="${XDG_CONFIG_HOME:-$HOME/.config}/equalang"
mkdir -p "$dir" && (umask 077 && echo 'EQUALANG_API_KEY=el_...' > "$dir/.env")
```

`EQUALANG_API_KEY` in the environment wins over the file. Without a key every command answers with how to get one and where it goes. **Never invent a key - ask the user.**

## Commands

Run from this skill's directory; `python3` and nothing else is needed. Every command prints one JSON object; `--help` lists a command's flags.

Read the full skill on GitHub

Details

Skill name: equalang
Repository: equalang/equalang-skill
License: Apache-2.0
Repo updated: 12 October 2026
Listed in: karanb192/awesome-claude-skills

FAQ

What does the Equalang skill do?

How do I install the Equalang skill?

skills CLI (Claude Code, Cursor, Codex and more): npx skills add equalang/equalang-skill --skill equalang. Skills go in ~/.claude/skills (personal) or .claude/skills (project), and Claude loads them automatically when a task matches the description.

Is Equalang popular?

It lives in equalang/equalang-skill, which has 55 GitHub stars and 0 forks, and is included in 1 curated skill list.

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