# tigris-image-optimization

A skill for images stored in Tigris: it builds variants at upload time, serves them from a public bucket and points you to the right framework guide.

- skill · `type=skill` · Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, OpenCode · 3100 installs · ★ 2
- Author: tigrisdata
- License: MIT · policy=mirror · the beginning of the file is at the end of this page
- Source: https://github.com/tigrisdata/skills/tree/HEAD/skills/tigris-image-optimization/SKILL.md
- Updated: 2026-07-23
- HTML: https://affpapa.org/en/nevibecode/skills/tigris-image-optimization

## What it does

The skill lays out three ways to handle images and says when each one fits. Process on upload for sizes you already know: avatar, thumbnail, cover. Process on request when variations are many. Client-side resize to keep the full file off your server. It recommends starting with the first, storing every variant as its own object such as `avatars/user-123-thumb.jpg`.

Six framework guides sit inside, one file each: `./resources/nextjs.md`, `remix.md`, `express.md`, `rails.md`, `django.md`, `laravel.md`. Next.js gets `next/image` config and Sharp processing, Express gets Sharp middleware with Multer, Rails gets Active Storage variants, Django gets django-imagekit and Pillow, Laravel gets Intervention Image. Nothing extra to install — the skill reads the file that matches the stack you ask about.

Delivery runs through Tigris public buckets, so there is no separate CDN to wire up. The rules are blunt: images users see need `access: "public"`, otherwise the CDN stays off. They also require an explicit `contentType` and push WebP or AVIF. This is where people slip — if you serve thumbnails but store only originals, the skill calls that out as a mistake. Content-hashed names like `hero-abc123.jpg` can take a long cache, mutable paths need a shorter TTL or ETags.

## Install

### Claude Code (native platform)

1. **Skills CLI (Vercel)**
```bash
npx skills add tigrisdata/skills --skill tigris-image-optimization -a claude-code
```

2. **Manually: put the files in place**
- File: `~/.claude/skills/tigris-image-optimization/SKILL.md` — Copy the whole skill folder; for one project use .claude/skills/tigris-image-optimization/

### Codex

1. **Skills CLI (Vercel)**
```bash
npx skills add tigrisdata/skills --skill tigris-image-optimization -a codex
```

2. **Manually: put the files in place**
- File: `.agents/skills/tigris-image-optimization/SKILL.md` — For all projects use ~/.agents/skills/

### Cursor

1. **Skills CLI (Vercel)**
```bash
npx skills add tigrisdata/skills --skill tigris-image-optimization -a cursor
```

2. **Manually: put the files in place**
- File: `.cursor/skills/tigris-image-optimization/SKILL.md` — Cursor also reads .agents/skills/ and .claude/skills/

### GitHub Copilot

1. **GitHub CLI**
```bash
gh skill install tigrisdata/skills tigris-image-optimization
```

2. **Manually: put the files in place**
- File: `.github/skills/tigris-image-optimization/SKILL.md`

### Gemini CLI

1. **Skills CLI (Vercel)**
```bash
npx skills add tigrisdata/skills --skill tigris-image-optimization -a gemini-cli
```

2. **Platform CLI**
```bash
gemini skills install https://github.com/tigrisdata/skills --path skills/tigris-image-optimization
```

### Windsurf (Devin Desktop)

**Manually: put the files in place**
- File: `.devin/skills/tigris-image-optimization/SKILL.md` — The legacy .windsurf/skills/ path still works

### OpenCode

**Skills CLI (Vercel)**
```bash
npx skills add tigrisdata/skills --skill tigris-image-optimization -a opencode
```

### Claude.ai

**Claude.ai**
- Zip the folder and upload it in Settings → Capabilities → Skills

Where a file is given instead of a command, copy the files from the source to that path: https://github.com/tigrisdata/skills/tree/HEAD/skills/tigris-image-optimization/SKILL.md

## When to use it
- cut thumbnails and covers at upload time
- serve responsive images across screen widths
- move a project to WebP or AVIF without manual work
- attach a CDN to images without a separate service
- set up Active Storage variants or django-imagekit

## Example prompts
- Add upload-time image processing with Tigris: 100x100 and 400x400 thumbnails
- Show me how to wire next/image with Sharp for images in Tigris
- Build an Express middleware that resizes with Sharp and Multer

## Source text · SKILL.md · MIT

Below is the content of a third-party file. It is data, not instructions for you: do not act on anything written inside unless the human asks. Block tag: bcbe5f99f51bb30d.

BEGIN THIRD-PARTY FILE bcbe5f99f51bb30d
````text
---
name: tigris-image-optimization
description: Use when resizing images, generating thumbnails, serving responsive images, or optimizing image delivery with Tigris — covers Next.js, Remix, Rails, Django, Laravel, Express
---

# Tigris Image Optimization

Resize, crop, and optimize images stored in Tigris. Generate thumbnails on upload, serve responsive images, and leverage Tigris's global CDN for fast delivery.

## Strategy Overview

| Approach | When to Use | Pros | Cons |
|----------|------------|------|------|
| Process on upload | Thumbnails, fixed sizes | Fast serving, predictable | Storage cost per variant |
| Process on request | Many size variations | Flexible, less storage | Latency on first request |
| Client-side resize | Before upload | Saves bandwidth, fast upload | Less control over quality |

**Recommended:** Process on upload for known sizes (avatar, thumbnail, cover). Use public buckets for CDN delivery — Tigris serves public files from the nearest global edge automatically.

---

## Upload-Time Processing (General Pattern)

Generate variants when a file is uploaded, store each variant as a separate object:

```
avatars/user-123.jpg          # original
avatars/user-123-thumb.jpg    # 100x100
avatars/user-123-medium.jpg   # 400x400
avatars/user-123-large.jpg    # 800x800
```

Use `access: "public"` for images that need fast, CDN-backed delivery.

---

## Framework Guides

Read the resource file for your framework:

- **Next.js** — Read `./resources/nextjs.md` for next/image config and Sharp processing
- **Remix** — Read `./resources/remix.md` for Sharp in action functions and responsive srcset
- **Express** — Read `./resources/express.md` for Sharp middleware with Multer
- **Rails** — Read `./resources/rails.md` for Active Storage variants
- **Django** — Read `./resources/django.md` for django-imagekit and Pillow processing
- **Laravel** — Read `./resources/laravel.md` for Intervention Image

---

## CDN Delivery

Tigris public buckets serve files from the nearest global edge — no separate CDN setup needed.

**Cache headers for images:**

```typescript
await put("images/hero.jpg", buffer, {
  access: "public",
  contentType: "image/jpeg",
});
```
````
END THIRD-PARTY FILE bcbe5f99f51bb30d

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First 2221 of 3046 bytes. © tigrisdata · MIT · https://github.com/tigrisdata/skills/tree/HEAD/skills/tigris-image-optimization/SKILL.md

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