Claude Code solved Claude's biggest problem with just a single prompt.

This issue will consume your usage limit faster than you imagine, and people have been searching for a solution ever since.

Finally, the solution was found, all thanks to Claude Code .

The token problem that nobody warned you about.

It turns out that "attaching a PDF" has its price.

Like other AI tools, Claude also allows you to attach PDFs and other files to a prompt. Those who work with research papers, administrative documents, and various other types of documents will do this frequently. For example, they might need Claude's help to understand a complex paper or to draft an official document from another PDF file. However, there have been many instances where prompts with attached PDF files have exceeded Claude's usage limits without any prior warning.

In many cases, you upload a multi-page PDF file and expect Claude to provide a better response, but instead receive a message that you've reached your usage limit. This behavior becomes even more frustrating when you pay for a subscription. After resenting Claude and its usage limits for a long time, many people realized the problem lay more with PDFs than with Claude. More importantly, a solution was found: Markdown.

Why is Markdown so much better than PDF?

The idea to reduce Claude's usage is simple: use Markdown instead of PDF. Obviously, Claude has to do a lot of heavy lifting when you attach a PDF file, but converting it to Markdown solves the problem. This is one of the many things that are special about Markdown .

This difference arises because PDF documents contain more than just text; they include a wealth of other data, such as layout and positioning information, encoding data, image references, and structural overhead—all of which Claude has to process. Markdown is relatively simple, so it weighs only a fraction of a PDF document. The results are impressive. In most cases, Claude uses less than half the tokens to process Markdown files compared to processing PDF documents.

However, many people dislike having to open another online tool to convert PDF to Markdown. Fortunately, there's a workaround for this by building a custom tool with Claude. The best part is that it only requires a single prompt.

A prompt, a working tool

Claude Code does an impressive job.

When the idea of ​​creating a web-based tool to convert PDF to Markdown arose, many people immediately thought of Claude Code. Frankly, they had used Claude Code to build web applications that weren't readily available online, and expected this task to be similar. And Claude Code didn't disappoint. Open Claude Code in the Terminal and enter the following prompt:

Can you build an offline web-based app that can convert a PDF to Markdown? Make sure you air-gap it.

The term "air-gap" was added to ensure that Claude downloads and stores all the necessary files on the computer, instead of requiring the tool to fetch them each time. This way, even if you don't have an internet connection, the PDF to Markdown converter will still work. You also don't want the hassle of running local servers. So, an HTML web application is what many people think of. Surprisingly, Claude Code built the entire application in less than 3 minutes and opened the HTML file in a web browser.

The impressive thing here is that you don't need to exchange messages back and forth with Claude Code multiple times. Instead, it understands what you want from a single prompt and automatically generates it for you. Now, after bookmarking this page in your browser, you can access and convert the PDF to Markdown before sending anything to Claude. Of course, you should only do this when you know you're dealing with a large PDF document, to significantly minimize token consumption.

As mentioned, the only limitation here is that you can't use this tool to convert scanned PDF documents. That seems to be a common problem with any PDF to Markdown converter. If you already have a Claude Pro subscription , using this single prompt to build this tool is better than the top-tier tools you rely on based on Claude, especially if you're dealing with many PDF documents. By the way, you can use the Artifact generator on Chrome to build a similar option if you want something online.