API Documentation

Every quickhelp.dev tool is available as a REST API. No auth required for the anonymous free tier (30 req/min per IP). The full OpenAPI 3.1 spec is at /openapi.json.

Quick start

curl -X POST https://quickhelp.dev/api/jwt-decoder \
  -H 'Content-Type: application/json' \
  -d '{"token":"eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9..."}'

Tool endpoints

POST/api/jwt-decoder
JWT Decoder
Decode and verify JSON Web Tokens — header, payload, claims, and signature.
encoding
POST/api/json-formatter
JSON Formatter
Pretty-print or minify JSON — with syntax validation.
formatting
POST/api/image-converter
Image Converter
Convert images between PNG, JPEG, WebP, AVIF, TIFF, GIF, and SVG formats
conversion
POST/api/background-remover
Background Remover
Remove image backgrounds instantly with AI — returns a transparent PNG
conversion
POST/api/lcov-viewer
LCOV Coverage Viewer
Parse and visualize LCOV code coverage reports — line, function, and branch coverage per file.
validation
POST/api/image-resizer
Image Resizer & Cropper
Resize, crop, rotate, and flip images online — free, runs in your browser, no upload required.
conversion
POST/api/base64
Base64 Encoder / Decoder
Encode text or data to Base64, or decode Base64 back to plain text.
encoding
POST/api/hash-generator
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, or SHA-512 hashes from any text input.
cryptography
POST/api/url-encoder
URL Encoder / Decoder
Encode or decode URLs and query string components using percent-encoding (RFC 3986).
encoding
POST/api/timestamp-converter
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and ISO 8601, or convert dates back to epoch seconds.
datetime
POST/api/uuid-generator
UUID Generator
Generate one or more cryptographically random UUID v4 identifiers instantly.
generation
POST/api/text-case-converter
Text Case Converter
Convert text between camelCase, snake_case, kebab-case, PascalCase, and 7 other naming conventions.
text
POST/api/json-to-csv
JSON to CSV Converter
Convert a JSON array of objects to CSV, or parse CSV back to JSON.
formatting
POST/api/color-converter
Color Converter
Convert colors between HEX, RGB, HSL, and HSV — instantly and in any direction.
conversion
POST/api/number-base-converter
Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal.
encoding

Agent discovery surfaces

quickhelp.dev is designed for AI agent consumption. Beyond the REST API, these surfaces provide machine-readable tool discovery:

/openapi.json— OpenAPI 3.1 — all endpoints with schemas
/llms.txt— llms.txt discovery document
/llms-full.txt— Full content dump for one-shot AI context loading
/mcp— Model Context Protocol endpoint (HTTP transport)