# Compare PDFs

> Compare rendered pages for visual differences.

[Open tool](https://www.toolcabana.com/sl/compare-pdf) · [PDF in dokumenti](https://www.toolcabana.com/sl/category/pdf-and-documents)

Tool ID: compare-pdf. Requested language: sl. Description language: en. Complete guide translation: no; untranslated sections use English.

## Supported tasks (en)

Compares rendered pages at 72 DPI with a configurable pixel threshold. A zero visual difference does not establish semantic or digital-signature equality.

## Steps (en)

1. Choose a source file. If the tool accepts multiple files, arrange them in the order you want.
2. Adjust the basic settings, then open Advanced mode for export and fine-tuning options. Custom settings stay active when the panel is closed.
3. Run compare pdfs, review the output, then use the available copy or download controls.

## Settings

- Pixel difference threshold (en; key: threshold; type: number); minimum: 0; maximum: 255
- Maximum pages compared (en; key: maxPages; type: number); minimum: 1; maximum: 200

## Limitations (en)

PDF input is bounded to 20 MB per file. Page rendering is capped at 200 selected pages; page-edit output is bounded to 500 pages.

## Privacy and connections (en)

This operation processes its source in your browser. Copy and download are explicit actions; source input is not saved in an account or history.

## Questions (en)

### What does compare pdfs do?

Compares rendered pages at 72 DPI with a configurable pixel threshold. A zero visual difference does not establish semantic or digital-signature equality.

### Where is my input processed?

This operation processes its source in your browser. Copy and download are explicit actions; source input is not saved in an account or history.

### What are the input limits?

PDF input is bounded to 20 MB per file. Page rendering is capped at 200 selected pages; page-edit output is bounded to 500 pages.

## Related tools

- [Edit PDF metadata](https://www.toolcabana.com/sl/pdf-metadata)