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API Documentation

All endpoints require authentication via an API key. Pass it as a Bearer token in the Authorization header or as an api_key query parameter.

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Authentication

Include your API key in every request using one of these methods:

# Option 1: Authorization header (recommended)
curl -H "Authorization: Bearer snp_your_api_key" ...

# Option 2: Query parameter
curl "https://api-snap.com/api/qr?data=test&api_key=snp_your_api_key"

Rate Limit Headers

Every response includes X-RateLimit-Limit and X-RateLimit-Remaining headers so you can track usage.

Endpoints (13)

GET/api/qrQR Code Generation GET/api/hashHash Generation GET/api/uuidUUID / ID Generation POST/api/base64Base64 Encode/Decode POST/api/jwt-decodeJWT Decode GET/api/colorColor Conversion GET/api/loremLorem Ipsum Generator GET/api/placeholderPlaceholder Images GET/api/metaURL Metadata / OG Tags POST/api/resizeImage Resize & Convert POST/api/markdownMarkdown to HTML GET/api/screenshotScreenshot Capture POST/api/pdfHTML to PDF

GET/api/qr

QR Code Generation

Generate QR codes in PNG or SVG format with customizable colors and sizes.

Parameters

Name	Required	Description
`data`	Required	The text or URL to encode
`size`	Optional	Image width in pixels (max 1000, default 300)
`format`	Optional	"png" or "svg" (default "png")
`dark`	Optional	Dark color hex (default #000000)
`light`	Optional	Light color hex (default #ffffff)

Example

curl "https://api-snap.com/api/qr?data=https://example.com&size=400&format=svg" \
  -H "Authorization: Bearer snp_your_api_key"

Returns image/png or image/svg+xml

GET / POST/api/hash

Hash Generation

Generate cryptographic hashes using SHA-256, SHA-512, MD5, and more.

Parameters

Name	Required	Description
`text`	Required	The text to hash (query param for GET, body field for POST)
`algorithm`	Optional	Algorithm: md5, sha1, sha256, sha512, sha384, sha3-256, sha3-512 (default sha256)
`encoding`	Optional	Output encoding: hex, base64, base64url (default hex)

Example

curl "https://api-snap.com/api/hash?text=Hello+World&algorithm=sha256" \
  -H "Authorization: Bearer snp_your_api_key"

Returns JSON: {"hash": "...", "algorithm": "sha256", "encoding": "hex"}

GET/api/uuid

UUID / ID Generation

Generate unique identifiers in various formats. Great for database IDs, tokens, and more.

Parameters

Name	Required	Description
`format`	Optional	Format: uuid, v4, nanoid, nanoid-short, hex, base64, numeric, timestamp (default uuid)
`count`	Optional	Number of IDs to generate, 1-100 (default 1)
`prefix`	Optional	Prefix to prepend to each ID (e.g., 'usr_', 'txn_')

Example

curl "https://api-snap.com/api/uuid?format=nanoid&count=5&prefix=usr_" \
  -H "Authorization: Bearer snp_your_api_key"

Returns JSON: {"id": "..."} for count=1, {"ids": [...]} for count>1

POST/api/base64

Base64 Encode/Decode

Encode or decode strings using Base64 or Base64URL encoding.

Parameters

Name	Required	Description
`input`	Required	The string to encode or decode
`action`	Optional	"encode" or "decode" (default "encode")
`urlSafe`	Optional	Use base64url variant (default false)

Example

curl -X POST "https://api-snap.com/api/base64" \
  -H "Authorization: Bearer snp_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{"input": "Hello, World!", "action": "encode"}'

Returns JSON: {"result": "SGVsbG8sIFdvcmxkIQ==", "action": "encode"}

POST/api/jwt-decode

JWT Decode

Decode and inspect JWT tokens without verification. See header, payload, and expiry information.

Parameters

Name	Required	Description
`token`	Required	The JWT token to decode

Example

curl -X POST "https://api-snap.com/api/jwt-decode" \
  -H "Authorization: Bearer snp_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{"token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9..."}'

Returns JSON: {"header": {...}, "payload": {...}, "expired": false, "expiresAt": "..."}

GET/api/color

Color Conversion

Convert colors between hex, RGB, and HSL. Includes brightness and dark/light detection.

Parameters

Name	Required	Description
`color`	Required	Color in hex (#ff0000 or ff0000), rgb(255,0,0), or hsl(0,100%,50%)

Example

curl "https://api-snap.com/api/color?color=6366f1" \
  -H "Authorization: Bearer snp_your_api_key"

Returns JSON with hex, rgb, hsl, brightness, isDark fields

GET/api/lorem

Lorem Ipsum Generator

Generate placeholder text in paragraphs. Output as plain text or HTML.

Parameters

Name	Required	Description
`paragraphs`	Optional	Number of paragraphs, 1-20 (default 3)
`sentences`	Optional	Sentences per paragraph, 1-20 (default 5)
`format`	Optional	"text" (JSON response) or "html" (HTML paragraphs) (default "text")

Example

curl "https://api-snap.com/api/lorem?paragraphs=3&sentences=4" \
  -H "Authorization: Bearer snp_your_api_key"

Returns JSON: {"text": "...", "paragraphs": [...]}

GET/api/placeholder

Placeholder Images

Generate SVG placeholder images with custom dimensions, colors, and text.

Parameters

Name	Required	Description
`w`	Optional	Width in pixels (1-2000, default 300)
`h`	Optional	Height in pixels (1-2000, default 200)
`bg`	Optional	Background color hex without # (default cccccc)
`fg`	Optional	Text color hex without # (default 666666)
`text`	Optional	Custom text (default "WxH")

Example

curl "https://api-snap.com/api/placeholder?w=600&h=400&bg=4f46e5&fg=ffffff&text=Hero+Image" \
  -H "Authorization: Bearer snp_your_api_key"

Returns image/svg+xml with immutable cache headers

GET/api/meta

URL Metadata / OG Tags

Extract Open Graph metadata, title, description, favicon, and more from any URL.

Parameters

Name	Required	Description
`url`	Required	The URL to extract metadata from

Example

curl "https://api-snap.com/api/meta?url=https://github.com" \
  -H "Authorization: Bearer snp_your_api_key"

Returns JSON with title, description, image, siteName, favicon, author, etc.

POST/api/resize

Image Resize & Convert

Resize, crop, and convert images between formats. Supports multipart upload or JSON with base64/URL.

Parameters

Name	Required	Description
`image`	Required	Image file (multipart) or base64 string, or use 'url' field
`url`	Optional	URL of image to resize (alternative to image upload)
`width`	Optional	Target width in pixels (max 4096)
`height`	Optional	Target height in pixels (max 4096)
`format`	Optional	Output format: png, jpeg, webp, avif (default png)
`quality`	Optional	Output quality 1-100 (default 80, for jpeg/webp/avif)
`fit`	Optional	Resize fit: cover, contain, fill, inside, outside (default cover)

Example

curl -X POST "https://api-snap.com/api/resize" \
  -H "Authorization: Bearer snp_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{"url":"https://example.com/photo.jpg","width":400,"format":"webp"}'

Returns the resized image in the requested format

POST/api/markdown

Markdown to HTML

Convert Markdown to HTML. Returns either styled full HTML page or raw HTML fragment.

Parameters

Name	Required	Description
`markdown`	Required	Markdown content to convert
`styled`	Optional	Return full styled HTML page (default true). Set false for raw HTML fragment.

Example

curl -X POST "https://api-snap.com/api/markdown" \
  -H "Authorization: Bearer snp_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{"markdown": "# Hello World\n\nThis is **bold** text."}'

Returns text/html (styled) or JSON with html field (unstyled)

GET/api/screenshot

Screenshot Capture

Capture a visual preview of any URL. Returns an SVG representation.

Parameters

Name	Required	Description
`url`	Required	The URL to capture (must be valid)
`width`	Optional	Viewport width (default 1280)
`height`	Optional	Viewport height (default 720)

Example

curl "https://api-snap.com/api/screenshot?url=https://example.com&width=1280" \
  -H "Authorization: Bearer snp_your_api_key"

Returns image/svg+xml

POST/api/pdf

HTML to PDF

Convert HTML content to a downloadable PDF document.

Parameters

Name	Required	Description
`html`	Required	HTML content to convert to PDF
`title`	Optional	Document title and filename (default "document")

Example

curl -X POST "https://api-snap.com/api/pdf" \
  -H "Authorization: Bearer snp_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{"html": "<h1>Invoice #123</h1><p>Amount: $99.00</p>", "title": "Invoice"}' \
  -o invoice.pdf

Returns application/pdf

Error Responses

Status	Meaning
`400`	Bad request — missing or invalid parameters
`401`	Unauthorized — missing or invalid API key
`429`	Rate limit exceeded — upgrade your plan for more requests
`502`	Bad gateway — upstream URL could not be fetched
`500`	Internal server error

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