@jackgreen2018/personal-trainer-workout-plan

Generate professional workout plan PDFs client-side via Rust/WASM. Targeted at freelance personal trainers who pay $49/mo for bloated platforms.

Install

npm install @jackgreen2018/personal-trainer-workout-plan

Usage

import { generateWorkoutPlan } from '@jackgreen2018/personal-trainer-workout-plan';

await generateWorkoutPlan({
  client_name: "Alex Johnson",
  trainer_name: "Coach Sarah Miller",
  plan_title: "8-Week Strength Program",
  start_date: "2026-08-15",
  days: [
    {
      day_number: 1,
      day_label: "Push Day",
      exercises: [
        { name: "Barbell Bench Press", sets: 4, reps: "8-10", rest_seconds: 90 },
        { name: "Overhead Press", sets: 3, reps: "10", rest_seconds: 75 },
      ]
    }
  ],
  notes: "Progressive overload",
  color: [30, 64, 128]
});

Returns a Uint8Array containing a valid PDF document.

API

generateWorkoutPlan(options)

Generates a multi-page PDF workout plan.

Options:

| Field | Type | Required | Description | |-------|------|----------|-------------| | client_name | string | Yes | Client's full name | | trainer_name | string | Yes | Trainer's name | | plan_title | string | No | Plan title (default: "Workout Plan") | | start_date | string | No | Plan start date | | days | WorkoutDay[] | Yes | Array of workout days | | notes | string | No | General notes for the plan | | color | [number, number, number] | No | RGB color tuple (default: [30, 64, 128]) |

WorkoutDay:

| Field | Type | Required | Description | |-------|------|----------|-------------| | day_number | number | Yes | Day number (1-7) | | day_label | string | Yes | Day name (e.g., "Push Day") | | exercises | Exercise[] | Yes | List of exercises |

Exercise:

| Field | Type | Required | Description | |-------|------|----------|-------------| | name | string | Yes | Exercise name | | sets | number | Yes | Number of sets | | reps | string | Yes | Reps (e.g., "10", "8-12", "30s") | | rest_seconds | number | No | Rest between sets in seconds | | notes | string | No | Exercise-specific notes |

Benchmark

Tested on Node.js 20, M1 MacBook Pro:

| Library | Time (ms) | Size (bytes) | Speedup | |---------|-----------|--------------|---------| | @jackgreen2018/personal-trainer-workout-plan | 5.2 | 8618 | 6.53x faster | | pdf-lib | 33.8 | 3674 | baseline |

Run benchmark:

npm run benchmark

License

MIT