DevTools24 API

Free API for common developer operations. No authentication required. All endpoints support CORS and can be called from any origin.

Base URL: https://www.devtools24.com

Rate Limits: Fair use policy. No hard rate limits, but please don't abuse the API. For heavy workloads, consider running the operations locally.

POST/api/base64

Encode or decode Base64 strings.

Action must be "encode" or "decode".

Request Body

{
  "action": "encode",
  "input": "Hello, World!"
}

Response

{
  "result": "SGVsbG8sIFdvcmxkIQ=="
}

curl Example

curl -X POST https://www.devtools24.com/api/base64 \
  -H "Content-Type: application/json" \
  -d '{"action": "encode", "input": "Hello, World!"}'

POST/api/hash

Generate cryptographic hashes using Web Crypto API.

Supported algorithms: sha1, sha256, sha512. MD5 returns 501 (not supported by Web Crypto).

Request Body

{
  "algorithm": "sha256",
  "input": "Hello, World!"
}

Response

{
  "result": "dffd6021bb2bd5b0af676290809ec3a53191dd81c7f70a4b28688a362182986f",
  "algorithm": "sha256"
}

curl Example

curl -X POST https://www.devtools24.com/api/hash \
  -H "Content-Type: application/json" \
  -d '{"algorithm": "sha256", "input": "Hello, World!"}'

GET/api/uuid

Generate UUIDs (v4). Use ?count=N for multiple (max 100).

Response

{
  "uuid": "550e8400-e29b-41d4-a716-446655440000"
}

curl Example

curl https://www.devtools24.com/api/uuid

# Generate 5 UUIDs
curl https://www.devtools24.com/api/uuid?count=5

GET/api/password

Generate secure random passwords.

Query params: length (1-128, default 16), uppercase, lowercase, numbers, symbols (all default true).

Response

{
  "password": "aB3$kL9!mN2@pQ7&",
  "strength": "very-strong"
}

curl Example

curl https://www.devtools24.com/api/password

# Custom options
curl "https://www.devtools24.com/api/password?length=32&symbols=false"

POST/api/json

Format, minify, or validate JSON.

Action must be "format", "minify", or "validate". Indent: 2 or 4 (default 2).

Request Body

{
  "action": "format",
  "input": "{\"name\":\"test\",\"value\":123}",
  "indent": 2
}

Response

{
  "result": "{\n  \"name\": \"test\",\n  \"value\": 123\n}",
  "valid": true
}

curl Example

curl -X POST https://www.devtools24.com/api/json \
  -H "Content-Type: application/json" \
  -d '{"action": "format", "input": "{\"name\":\"test\",\"value\":123}", "indent": 2}'

Error Handling

All endpoints return errors with the following format:

{
  "error": "Description of the error"
}

Common HTTP status codes: 400 for bad requests, 501 for unsupported operations.

CORS

All API endpoints include CORS headers and support preflight requests. You can call these endpoints directly from browser-based applications on any domain.