pexels-stock-photos

Pexels Stock Photos

Search and download free stock photos from the Pexels API (200 req/hr, 20k/month free). All content is free for commercial and non-commercial use; just credit the photographer and link to Pexels.

Routing: Pexels vs AI Generation

User says...	Tool
"find a photo of Singapore" / "search for office pictures" / "stock image of a desk"	Pexels (this skill)
"I need a real photo for this slide" / "find pictures for my article"	Pexels (this skill)
"generate an image of a cat" / "create a picture of..." / "make me an illustration"	Host's image generation tool
"upscale this" / "remove background" / "edit: make warmer"	Host's AI image editing skill
"production-ready hero image" / "let's do this properly"	Host's multi-stage image generation skill

The key word test: if the user says photo, picture, stock image, or find/search → Pexels. If the user says generate, create, make, draw, or illustration → AI generation.

When to Use

• User asks for a "photo of X" or "stock image of Y"
• Building presentations (PPTX) that need real imagery
• Article/blog illustrations needing authentic photos
• Social media posts requiring professional photography
• Any request for "real" images vs AI-generated

Don't use for:

• AI art / creative generation → host's image generation tool
• Editing existing images → host's image editing skill
• Screenshots or diagrams → use appropriate tools

API Reference

Base URL: https://api.pexels.com/v1/ Auth: Authorization: <PEXELS_API_KEY> header

Endpoints

Endpoint	Method	Purpose
/search	GET	Search photos by query
/curated	GET	Curated trending photos
/photos/:id	GET	Get a specific photo by ID

Search Parameters

Param	Type	Default	Notes
query	string	required	e.g. "singapore skyline"
orientation	string	—	landscape, portrait, square
size	string	—	large (24MP), medium (12MP), small (4MP)
color	string	—	red, orange, blue, ... or hex #ffffff
locale	string	en-US	zh-CN, ja-JP, etc.
per_page	int	15	Max 80
page	int	1	Pagination

Photo Resource src Sizes

Size	Dimensions	Use case
original	Full res	Print, high-quality
large2x	940×650 @2x	Retina displays
large	940×650	Web, presentations
medium	~350px height	Thumbnails, previews
small	~130px height	Small thumbnails
portrait	800×1200	Vertical/mobile
landscape	1200×627	Slides, social
tiny	280×200	Placeholders

Workflow

1. Search for photos

curl -s -H "Authorization: $PEXELS_API_KEY" \
  "https://api.pexels.com/v1/search?query=singapore+skyline&per_page=5&orientation=landscape"

Parse the JSON response to present results to the user: photo ID, photographer, alt text, dimensions, and Pexels URL.

2. Download a photo

Use the src URLs from the search response — don't hand-construct images.pexels.com URLs (the slug/extension isn't guaranteed; Pexels' docs say to use src). Each photo object carries ready-made size variants (see the src table above).

# Download the size you need, straight from the photo's src field
# (e.g. the value of photos[0].src.large from the search JSON)
curl -sL -o /tmp/pexels_<id>.jpeg "<photo.src.large>"

Deliver the file to the user via the host's file delivery mechanism.

3. Present results

When showing search results, format as a table:

| # | ID | Photographer | Alt | Dimensions |
|---|-----|-------------|-----|------|
| 1 | 5097071 | Dylan Chan | Singapore skyline at dusk | 6016×3384 |

Include the Pexels URL so the user can preview before downloading.

Attribution

Per Pexels guidelines:

• Credit the photographer: "Photo by [Name] on Pexels"
• Link back to the photo page URL
• Include "Photos provided by Pexels" when displaying multiple

Example attribution block:

Photo by Dylan Chan on Pexels
https://www.pexels.com/photo/high-rise-buildings-in-singapore-5097071/

Common Pitfalls

1. API key not in environment. PEXELS_API_KEY must be set before making requests. Load it from your environment or .env file before calling curl.

2. Using spaces in query. URL-encode spaces as + or %20. singapore skyline → singapore+skyline.

3. Downloading original for previews. Original files can be 10MB+. Use large or medium for previews, original only when the user needs full resolution.

4. Rate limit awareness. 200 req/hr, 20k/month — but only API calls (search, curated, photo lookup) count. CDN downloads from the src URLs on images.pexels.com (no API key needed) do not count. Batch searches with per_page=15-80 to minimize API calls.

5. Not including attribution. Pexels requires visible credit to the photographer and a link to Pexels. Always include attribution text when delivering photos.

6. Hand-built photo URLs. Don't construct images.pexels.com/photos/... URLs yourself — the slug and extension aren't guaranteed across photos. Always download via the src.* URLs from the API response.

Verification Checklist

• PEXELS_API_KEY is set in the environment
• Search query returns results (check total_results > 0)
• Downloaded file exists and is non-empty
• Attribution text included with delivered photo
• Rate limit headers checked if making many requests (X-Ratelimit-Remaining)