# Supported inputs and limits

Source: https://iachecker.com/docs/supported-inputs
Status: Available now
Last verified: 2026-08-08

Each tool validates input before processing. This reference lists the current web-product formats and operational limits, which are separate from the future public API contract.

## Input matrix

*Supported input types in the IA Checker web product*

| Workflow | Accepted input | Current limit |
| --- | --- | --- |
| Pasted text detection | Plain text | At least 12 words; account-specific character cap |
| URL analysis | One public HTTP or HTTPS page | 40,000 readable characters per fetched page |
| Document extraction | PDF, DOCX, TXT, MD, CSV | 20 MB; up to 120,000 extracted characters |
| Document OCR | PNG, JPG, WebP, TIFF, BMP | 20 MB |
| Image detection | JPG, JPEG, PNG, WebP | 15 MB |
| EU AI Labelizer | JPG, PNG, WebP | Up to 20 images, 25 MB each |

## How document extraction chooses a path

Born-digital PDF, DOCX and text files use native extraction first. Scanned or layout-heavy material can move to the OCR path so the detector receives readable text instead of an empty document.

The extraction limit and the account character limit are applied separately. A large document may be read successfully and then shortened to the amount accepted by the selected tool.

## Validation and conversion

- The server verifies the MIME type and the file signature, not only the filename extension.
- JPG, PNG and WebP images are normalized before model inference where needed.
- Password-protected or malformed documents may need to be exported again before extraction.
- Old binary `.doc` files should be converted to `.docx` before upload.

## Documentation index

- [IA Checker documentation](https://iachecker.com/docs)
- [Assistant index](https://iachecker.com/llms.txt)
- [Privacy Policy](https://iachecker.com/privacy)