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ThatToolSite

100+ free browser tools for PDFs, images, video and dev work. Everything runs client-side: no uploads, no sign-up. Built with WebCodecs, WASM and pdf-lib.

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How to Save a Whole ChatGPT or Claude Chat as a PDF

How to Save a Whole ChatGPT or Claude Chat as a PDF

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5 min read

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How to Export Your ChatGPT History and Open It Privately

How to Export Your ChatGPT History and Open It Privately

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5 min read
How to Save a ChatGPT, Claude or Gemini Answer as a PDF

How to Save a ChatGPT, Claude or Gemini Answer as a PDF

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4 min read
How to Copy a ChatGPT Table into Excel or Google Sheets

How to Copy a ChatGPT Table into Excel or Google Sheets

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5 min read
How to Create a Markdown Table Without Typing Pipes

How to Create a Markdown Table Without Typing Pipes

Comments 1
3 min read
How to Preview Markdown Online: Tables, Mermaid and Math

How to Preview Markdown Online: Tables, Mermaid and Math

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4 min read
How to Render Mermaid Diagrams in Markdown

How to Render Mermaid Diagrams in Markdown

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3 min read
How to Convert JSON to TypeScript Interfaces

How to Convert JSON to TypeScript Interfaces

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3 min read
How to Compare Two JSON Files (Ignoring Key Order)

How to Compare Two JSON Files (Ignoring Key Order)

Comments 3
3 min read
What Is Base64? How Base64 Encoding Works

What Is Base64? How Base64 Encoding Works

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5 min read
How to Fix Common JSON Syntax Errors (Incl. AI Output)

How to Fix Common JSON Syntax Errors (Incl. AI Output)

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3 min read
Count Your Tokens Before You Paste: Practical LLM Token Math

Count Your Tokens Before You Paste: Practical LLM Token Math

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3 min read
OCR in the browser with Tesseract.js: no server, no CDN

OCR in the browser with Tesseract.js: no server, no CDN

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3 min read
How we convert MP4 to MP3 entirely in the browser (WebCodecs + LAME)

How we convert MP4 to MP3 entirely in the browser (WebCodecs + LAME)

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3 min read
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