ChatGPT PDF upload failing or processing slowly? Compress your PDF instantly using the tool below — reduces file size and token usage in one step.
👉 Fix: Compress your file below 512 MB using the tool above.
ChatGPT allows PDFs up to 512MB, but scanned PDFs often fail well below that due to the 2 million token limit. Each scanned page is stored as a high-resolution image, consuming far more tokens than a text page. Compressing reduces both file size and token count.
The most common cause is a scanned PDF — each page is stored as a high-resolution image, inflating file size and token count. Even a 50MB scanned PDF can exceed ChatGPT's 2 million token limit. Compressing the images fixes both problems.Source: OpenAI Help ↗
512MB per file. Text-based PDFs are also capped at 2 million tokens per file, which is a separate limit from file size.Source: OpenAI Help ↗
Compress your PDF using the tool above. This reduces embedded image quality, cutting both file size and token usage without affecting the text ChatGPT reads.Source: OpenAI Help ↗
ChatGPT has a 2 million token limit per file in addition to the 512MB size cap. A scanned PDF can hit the token limit well below 512MB. Compressing reduces image resolution, lowering both file size and token usage.Source: OpenAI Help ↗