Authenticity

Technical Specifications

This page describes the technical specifications of the Copyleaks API.

Page Definition

A page is defined as up to 250 words. This means that every 250 words (or portion thereof) in your document counts as one page for billing purposes.

How Page Counting Works:

1-250 words = 1 page
251-500 words = 2 pages
501-750 words = 3 pages
etc.

Input Limits

Supported File Types

Type	File Types List
Textual:	`html`, `htm`, `txt`, `csv`, `rtf`, `xml`, `md`
Non-Textual:	`pdf`, `docx`, `doc`, `pptx`, `ppt`, `odt`, `chm`, `epub`, `odp`, `ppsx`, `pages`, `xlsx`, `xls`, `LaTeX`
Source code:	`ts`, `py`, `go`, `cs`, `c`, `h`, `idc`, `cpp`, `hpp`, `c++`, `h++`, `cc`, `hh`, `java`, `js`, `swift`, `rb`, `pl`, `php`, `sh`, `m`, `scala`, `css`

Supported Textual File Types

The supported online format are all supported file types are also supported when online. Submitted by URL.

Supported Image Types (OCR)

The supported image files are pdf, docx, gif, png, bmp, jpg and jpeg . The files must contain textual content. Upload only.

Supported Plagiarism Languages

Setting	Description
Supported Languages	All languages supported by Unicode, including English, Spanish, French, Portuguese, Arabic, Russian, German, Greek, Chinese, Japanese, and more. More info.
Supported OCR Languages	See full list here.
Supported Cross Languages	See full list here.
Maximum Document Length	The maximum length allowed is 2000 pages (500K words).

File Size

Description	Max Upload File Size
HTML files (`html`, `htm`, …)	5 MB
Text files (`txt`, `csv`) and source-code	3 MB
Non-Textual Documents (`pdf`, `doc`, `docx`, …)	50 MB
Image Types (`jpg`, `png`, `bmp`, …)	25 MB

Rate Limit

An account by default has a rate of 10 requests per second. If you still need higher rates, feel free to contact us.

Maintenance Periods

When our servers are under maintenance you will receive a 503 HTTP status code. Please wait a full minute and try again.

For more information about the service status - Copyleaks System Status.

Time

Setting	Value
Time Format	`dd/MM/yyyy HH:mm:ss`
Time Zone	UTC
Default HTTP Request Timeout	110 seconds

Scan Expiration

Your created scans using the /v3/submit endpoints will be stored in Copyleaks servers for a specific duration of time. You can control the expiration of your scans in your submit request. Make sure you save your data before it expires:

Type	hours
Max Expiration	2880
Default Expiration	2880