API features

Readable HTML

Turn existing PDF text into a browser-friendly document.

Page-aware output

Keep page order and line breaks in numbered sections.

Multilingual text

Extract readable text already present in multilingual PDFs.

Upload or link input

Send a PDF upload or a publicly accessible PDF URL.

Browser-ready downloads

Open the generated HTML or save a local copy.

Document workflows

Prepare text for search, indexing, and content processing.

API Document

HTTP Protocol:HTTPS

HTTP Method:POST

HTTP Endpoint:https://api.gugudata.io/v1/imagerecognition/pdf2html

Response Type:application/json; charset=utf-8

DEMO Endpoint:https://api.gugudata.io/v1/imagerecognition/pdf2html/demo

Live Demo:Try Interactive Demo

Postman Collection:Run in Postman

API Request Parameters

Name	Type	Is Required	Default Value	Remark
appkey	string	true	YOUR_APPKEY	API key used to authenticate the request.
file	file	false		PDF up to 20 MiB and 100 pages. Provide exactly one of file or file_url.
file_url	string	false	https://storage.gugudata.io/pdf/demo.pdf	Public HTTP/HTTPS PDF URL, at most 2048 characters. Use instead of file.

API Response Parameters

Name	Type	Remark
htmlUrl	string	Public HTTPS URL of readable UTF-8 HTML. Download your own copy; permanent availability is not guaranteed.

API Response Status Codes

Status Code	Explanation of Status Code	Remarks
200	Request processed successfully.	Some endpoints expose a separate application-level status field in the response body, such as `dataStatus.statusCode`.
400	Invalid request parameters or request format.	Check required fields, data types, and request body format.
401	Missing or unknown application key.	Provide a valid `appkey` with the request.
403	The application key is recognized but access is not allowed.	The key may be expired, inactive, or not permitted for the requested API.
413	PDF exceeds the size or page limit.	Use a PDF of at most 20 MiB and 100 pages.
422	PDF cannot be converted.	Check that the PDF is readable, unencrypted, and contains text. Output must not exceed 20 MiB.
429	Request rate or trial usage limit exceeded.	Reduce request frequency and retry with backoff. If a trial allowance is exhausted, check Trial Keys for remaining requests and subscribe to continue.
500	Internal service error.	Retry later or contact support if the error persists.
502	PDF retrieval or conversion response failed.	Check that the uploaded PDF is readable and retry. For URL input, also check that the public PDF URL can be downloaded.
503	Conversion is temporarily unavailable.	Try again later.

Remote MCP

AI client access

Use this API through GuGuData Remote MCP

Connect your AI client once, authorize in the browser, and the client can use the GuGuData API tools available to your account. You do not need to paste an appkey into the MCP client.

Endpoint https://mcp.gugudata.io/mcp

Open MCP Guide

Generic MCP configuration

{
  "mcpServers": {
    "gugudata": {
      "url": "https://mcp.gugudata.io/mcp",
      "transportType": "streamable-http"
    }
  }
}

Code Snippets

Run in Postman Open LLM Page

Frequently asked questions

Common questions about request limits, trials, renewal, and cancellation.

What does the 5 requests per second limit mean?

It is a request-rate limit, not a concurrency allowance. Keep your request rate at or below 5 per second. If the service returns a rate-limit response, reduce the frequency and retry with backoff.

Is total paid usage limited?

There is no total request cap during an active paid subscription and no usage-based overage charge.

How does the free trial work?

Each account can receive a limited trial key. Requests are shared across APIs in the same category. Check Trial Keys for the exact allowance and remaining requests.

How do renewal and cancellation work?

The plan renews annually until canceled. Manage or cancel the renewal from Dashboard → Orders & Billing. Access continues through the paid period after cancellation. See the Terms of Service for the current refund policy. If the billing portal is unavailable, contact support.

Technical support

Need help choosing an API or getting started?

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