GET jwt.io HTTP 200142 ms2.5 KB$0.000196 captured Aug 7, 2026

jwt.io, as data

One API turns any jwt.io page into markdown, structured JSON, its link graph or a screenshot, and crawls the whole site the same way. The panel shows the real response we captured.

target profile from the capture

Render mode: Plain HTTP, no browser needed
Response: HTTP 200 in 142 ms
Page size: 2.5 KB of markdown, 77 lines
Fields: Business Name, Address, Phone, Category and 2 more
Captured: Aug 7, 2026

Start scraping jwt.io See the code

Free balance on signup, no card. This jwt.io page cost $0.000196 to fetch.

response 200 · 142 ms · 2.5 KB

# JSON Web Token (JWT) DebuggerDecode, verify, and generate JSON Web Tokens, which are an open, industry standard RFC 7519 method for representing claims securely between two parties.Paste a JWT below that you'd like to decode, validate, and verify.#### JSON Web Token (JWT)#### JWT#### Decoded Header#### Decoded Payload### JWT Signature Verification(Optional)Enter the secret used to sign the JWT below:#### Secreta-string-secret-at-least-256-bits-long[Share feedback](<https://community.auth0.com/new-topic?category=jwt&tags=feedback,jwt&title=[Feedback] &body=(Please share any feedback that you may have from using the JWT Debugger site. To delete this post draft, click the Close button below and then click Discard.)>)|[Report issue](<https://community.auth0.com/new-topic?category=jwt&tags=issue,jwt&title=[Issue] &body=(Please report any issue that you may have encountered while using the JWT Debugger site. To delete this post draft, click the Close button below and then click Discard.)>)"sub": "1234567890", "name": "John Doe", "admin": true, "iat": 1516239022}

POST /scrape · jwt.io/index.md · markdown · Showing 13 of 77 lines · captured Aug 7, 2026

What Spider does on jwt.io

Same key, five endpoints. The numbers under a cell were measured on this page.

/scrape

Page to markdown

Clean text for RAG and LLM context, boilerplate removed. The lane that runs without a key.

142 ms · $0.000196

/fetch

Page to JSON

Spider reads the page and names the fields. Pass your own schema when you need exact keys.

/crawl

Whole site

Follows jwt.io's own links, respects robots, streams pages as they land.

/links

Link graph

Every internal and external URL on a page, before you decide what to fetch.

/screenshot

Rendered capture

Real Chromium, full-page PNG. The same call also returns the rendered HTML.

The call behind the panel

This request produced the response above. Paste it with your key and you get the same bytes.

request scrape.sh

curl -X POST https://api.spider.cloud/scrape \
  -H "Authorization: Bearer $SPIDER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"url": "https://jwt.io/", "return_format": "markdown"}'

from spider import Spider

app = Spider()
params = {"return_format": "markdown"}
page = app.scrape_url("https://jwt.io/", params=params)
print(page[0]["content"])

import { Spider } from "@spider-cloud/spider-client";

const app = new Spider();
const [page] = await app.scrapeUrl("https://jwt.io/", {
  return_format: "markdown",
});
console.log(page.content);

plain request · no browser, no selectors

What jwt.io costs

Multiplied from the measured 2.5 KB page. Estimates round to the cent.

cost measured

This page, once 2.5 KB over HTTP, measured $0.000196

This page, daily for a month 30 fetches at the measured price ≈ $0.005884

1,000 pages this size 2.5 MB at the measured price ≈ $0.20

10,000 pages this size 24.6 MB at the measured price ≈ $1.96

1 GB of transfer costs $1, plus $0.001 per CPU minute, and failed requests cost $0. Crawling daily? The Unlimited plan is a flat monthly rate.

Point this at the rest of jwt.io.

The capture above took 142 ms and cost $0.000196. The same call takes any URL on jwt.io.

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