Free API Testing Tool — No Login Required
The Fastest Way to Test Any API.
No Login, No Bloat.
Pingllo is the browser-based API client built for speed. Send HTTP requests, inspect responses, generate code, and create AI-powered docs — all without signing up.
No credit card · No signup · Works in any browser
What is Pingllo?
Pingllo is a free, browser-based API testing tool that lets developers send HTTP requests to REST and GraphQL endpoints and inspect the responses — all without creating an account or installing any software. It is a lightweight alternative to tools like Postman and Insomnia, designed for speed and zero setup. Open the tool, paste an API URL, and you can send your first request in under 30 seconds.
PinglloNo saved requests yet.
Click "Save" to save a request.
Enter a URL and press Send
Response will appear here ⌘↵
Everything you need to test APIs
A full-featured API client in your browser — no installation, no account required.
Zero Signup, Instant Start
Open the tool and start testing immediately. No account, no email, no waiting.
REST & GraphQL Support
Send GET, POST, PUT, PATCH, DELETE requests and query GraphQL endpoints with variables.
Collections & Environments
Organize requests into collections and switch between Dev/Prod environments with variable substitution.
AI-Powered Docs & Explain
Generate API documentation in one click and get plain-English explanations of any request — powered by Claude or OpenAI.
Code Snippet Generation
Auto-generate ready-to-use cURL, JavaScript Fetch, and Axios code from any request.
Postman Compatible
Import your existing Postman v2.1 collections and keep your workflow intact.
Deep Response Analysis
Inspect response body, headers, status codes, timing, size, and compare diffs between runs.
Shareable Request Links
Generate a shareable link for any request — let teammates or clients reproduce it instantly, no account needed.
How it works
Test your first API in under 30 seconds.
Enter Your Endpoint
Paste any API URL. Choose your HTTP method — GET, POST, PUT, PATCH, or DELETE.
Configure the Request
Add headers, query params, auth tokens, and a request body in JSON, form data, or raw text.
Send & Analyze
Hit Send. Inspect the response body, headers, status code, and timing in real time.
AI-powered features built in
Pingllo integrates Claude and OpenAI to go beyond basic API testing.
Generate API Docs
Select a collection and get a full Markdown API reference generated in seconds. Export or copy with one click.
Explain Any Request
Paste a URL and get a plain-English explanation of what the endpoint does, what auth it needs, and what to expect.
Convert cURL → Request
Paste a cURL command from Slack, docs, or Stack Overflow and Pingllo fills in method, headers, and body automatically.
Bring your own API key (Claude or OpenAI). Your data stays in your browser.
Pingllo vs other API testing tools
See how Pingllo compares to Postman, Insomnia, and Hoppscotch. Full comparison →
| Feature | Pingllo | Postman | Insomnia | Hoppscotch |
|---|---|---|---|---|
| No account required | ||||
| Free to start | ||||
| Collections | ||||
| Environment variables | ||||
| GraphQL support | ||||
| Code generation | ||||
| Postman import | — | |||
| No desktop install needed | ||||
| Request history | ||||
| AI doc generation | ||||
| Error explanation in plain English |
Built for every developer
Whether you build, test, or document APIs — Pingllo fits your workflow.
Frontend Developers
Quickly verify API contracts before integrating. Test auth flows, inspect response shapes, and generate ready-to-paste Fetch/Axios snippets.
Backend Developers
Debug endpoints in real time. Use environment variables to switch between local, staging, and production URLs instantly.
QA Engineers
Write automated assertions against response values, status codes, and headers. Spot regressions before they ship.
API Documentation Writers
Build and save example requests in collections. Generate AI-powered docs and shareable links to let readers try APIs live.
Frequently asked questions
Is Pingllo free to use?↓
Yes. Pingllo is free to use with no credit card required. Core features — sending REST and GraphQL requests, collections, environment variables, response inspection, and code generation — are available at no cost with no usage caps. You can start immediately without creating an account.
Do I need to create an account?↓
No account is required to use Pingllo. Open the tool at pingllo.com/tool and start sending API requests immediately. You can optionally create a free account to sync your collections and environments across devices.
What is Pingllo and how does it work?↓
Pingllo is a browser-based API testing tool that lets developers send HTTP requests (GET, POST, PUT, PATCH, DELETE) to REST and GraphQL endpoints and inspect the responses. It runs entirely in your browser — no desktop app, no command-line setup. You enter an API URL, configure headers and authentication, add a request body if needed, and click Send. The response body, headers, status code, and latency are displayed instantly.
Does Pingllo support GraphQL?↓
Yes. Pingllo has full GraphQL support. Select 'GraphQL' as the body type, write your query or mutation in the editor, add variables as JSON, and send. The response displays both the data and errors fields. Pingllo also supports introspection queries to explore your schema.
Can I import my Postman collections?↓
Yes. Pingllo supports importing Postman Collection v2.1 JSON files. All folders, requests, HTTP methods, headers, query parameters, auth configurations, and body payloads are preserved. Export your collection from Postman (Collection v2.1 format) and import it directly into Pingllo.
Is my API data secure?↓
All requests are sent through Pingllo's proxy server, which enforces private IP blocking to prevent SSRF (Server-Side Request Forgery) attacks. Your request data — URLs, headers, bodies, and auth tokens — is never stored on Pingllo's servers. Collections and environments are saved in your browser's local storage only.
What authentication methods are supported?↓
Pingllo supports Bearer token authentication (OAuth 2.0 / JWT), Basic Auth (username and password encoded as Base64), and custom header-based authentication (e.g., X-API-Key headers). You can save auth configurations per request or per environment.
How does AI doc generation work?↓
Select a collection in Pingllo and click 'Generate Docs.' Pingllo uses your own Claude or OpenAI API key — which you enter in settings — to generate a full Markdown API reference document from your saved requests. The generation runs in your browser. Your requests and API key are never transmitted to Pingllo's servers.
How is Pingllo different from Postman?↓
Pingllo requires no account, no desktop installation, and no paid plan to access core features. Postman requires account creation before sending any request, has a mandatory desktop app, and restricts team collaboration behind paid tiers. Pingllo also includes AI-powered documentation generation and plain-English error explanations that Postman does not offer.
Can I generate cURL or JavaScript code from my requests?↓
Yes. After building a request in Pingllo, click 'Code Snippet' to generate a ready-to-use cURL command, JavaScript Fetch call, or Axios request. The generated code includes all headers, authentication, query parameters, and body exactly as configured.
Start testing your APIs today
No signup needed to get started. Just open the tool and go. Your first request is one click away.
Get Started Free →Looking for a Postman replacement? See how Pingllo compares
Or read the Complete API Testing Guide