Select multiple local files, merge their contents with filename markers, then split the result into copy/paste blocks that stay under a character limit.
Privacy note: This tool runs locally in your browser. It does not upload your files or send them to a third-party server. You can verify this in DevTools → Network, or download a local copy and run it from your computer.
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DeepSeek Expert is reportedly around 160,000 chars, so 150,000 gives breathing room.
Use {TOTAL_BLOCKS} where you want the final block count inserted.
Available placeholders: {BLOCK_NUMBER} and {TOTAL_BLOCKS}.
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Tip: paste Block 1 first, then Block 2, and keep going. After the last block, send your actual prompt/instructions in a separate message.