API Presend para desenvolvedores

Endpoints de servidor gratuitos para tarefas comuns, além de ferramentas incorporáveis no cliente. Sem chave de API. Sem cadastro.

Endpoints de servidor

Rodam na rede edge da Cloudflare e retornam JSON. Apenas uso justo — sem SLA oficial, tráfego pesado ou automatizado pode ser limitado sem aviso.

POST /api/hash

Returns SHA-256, SHA-1 and SHA-512 for any file up to 20MB.

curl -X POST --data-binary @file.pdf \
  https://presend.pages.dev/api/hash

# {"size_bytes":17,"hashes":{"sha256":"...","sha1":"...","sha512":"..."}}

GET /api/url-clean

Strips 60+ tracking parameters (utm_*, fbclid, gclid...) from a URL.

curl "https://presend.pages.dev/api/url-clean?url=https://example.com/?utm_source=x"

# {"clean":"https://example.com/","removed":1,"valid":true}

POST /api/url-clean

Same, batched — up to 100 URLs per request.

curl -X POST -H "Content-Type: application/json" \
  -d '{"urls":["https://a.com?fbclid=x","https://b.com?gclid=y"]}' \
  https://presend.pages.dev/api/url-clean

GET /api/ip

Returns the caller's IP with geolocation, currency, language and EU/VPN flags.

curl https://presend.pages.dev/api/ip

GET /api/uuid

Generates random UUIDs (v4), up to 100 per request.

curl "https://presend.pages.dev/api/uuid?count=5"

GET /api/base64

Encode or decode Base64 text.

curl "https://presend.pages.dev/api/base64?action=encode&text=hello"

GET /api/jwt-decode

Decodes a JWT's header and payload (does not verify the signature).

curl "https://presend.pages.dev/api/jwt-decode?token=eyJhbGci..."

GET /api/timestamp

Current time, or convert between Unix timestamp and ISO date.

curl "https://presend.pages.dev/api/timestamp?unix=1700000000"

GET /api/color

Convert between hex, RGB and HSL color formats.

curl "https://presend.pages.dev/api/color?hex=ff5733"

GET /api/user-agent

Parses a User-Agent string into browser, OS and device type.

curl "https://presend.pages.dev/api/user-agent"

GET /api/password

Generates a cryptographically secure password with entropy estimate.

curl "https://presend.pages.dev/api/password?length=20&symbols=1"

GET /api/email-validate

Validates email syntax and checks for a valid MX record (real deliverability check).

curl "https://presend.pages.dev/api/email-validate?email=foo@example.com"

GET /api/favicon

Fetches the favicon URL for any domain.

curl "https://presend.pages.dev/api/favicon?domain=github.com"

GET/POST /api/csv-json

Converts between JSON and CSV. Nested objects are stringified, not flattened.

curl -X POST -H "Content-Type: application/json" \
  -d '{"direction":"json-to-csv","data":"[{\"a\":1}]"}' \
  https://presend.pages.dev/api/csv-json

GET /api/password-breach

Checks if a password appears in known data breaches (HIBP k-anonymity — your password is never sent or logged in full).

curl "https://presend.pages.dev/api/password-breach?password=..."

GET /api/email-disposable

Detects disposable/throwaway email providers from a list of 576+ known domains.

curl "https://presend.pages.dev/api/email-disposable?email=foo@mailinator.com"

GET /api/security-headers

Audits HTTP security headers (CSP, HSTS, X-Frame-Options...) and gives a letter grade.

curl "https://presend.pages.dev/api/security-headers?url=https://example.com"

GET /api/url-reputation

Checks a URL against URLhaus, a public malware/phishing database.

curl "https://presend.pages.dev/api/url-reputation?url=https://example.com"

GET /api/subdomains

Passive subdomain discovery via Certificate Transparency logs (crt.sh) — for auditing your own attack surface. Note: depends on crt.sh, which has occasional downtime outside our control.

curl "https://presend.pages.dev/api/subdomains?domain=example.com"

Ferramentas no cliente (incorporar)

Ferramentas de processamento de arquivos (remoção de EXIF, compressão de PDF, etc.) rodam inteiramente no navegador — nada é enviado, então não há endpoint de servidor para elas. Incorpore diretamente:

<iframe 
  src="https://presend.pages.dev/tools/exif-remover?embed=1" 
  width="100%" 
  height="600" 
  frameborder="0"
></iframe>

Ferramentas disponíveis

GET /api/api-stats

Public usage counters per endpoint, aggregated by day. No cookies, no IP stored.

curl "https://presend.pages.dev/api/api-stats"

Pacote npm

Um cliente JS sem dependências que envolve todos os endpoints acima.

npm install presend-api

const presend = require('presend-api');
const { uuids } = await presend.generateUuid(3);

View on npm

Widget incorporável

Adicione uma ferramenta funcional diretamente no seu site — sem iframe, alimentada diretamente pela nossa API. Suporta: url-cleaner, uuid, color.

<div data-presend-tool="url-cleaner"></div>
<script src="https://presend.pages.dev/widget.js" async></script>

Adicione data-badge="false" para ocultar o link de crédito "Powered by Presend".

Especificação OpenAPI

Especificação legível por máquina para todos os endpoints de servidor: openapi.json

Código aberto

Todas as ferramentas são de código aberto. Contribua no GitHub ou faça um fork para seus próprios projetos. github.com/presendapp/presend