Intercepts file uploads to ChatGPT, Claude, Gemini, and DeepSeek and converts them to Markdown locally to save tokens.
Users
69
+30 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
1
0 in 30 days
Store rank
#97K
#81K among extensions
Version
0.2.0
updated 14 Jul 2026
Users
monthly, 3 months
Latest, 19 Oct 2026:69 usersMove the mouse over the chart for any month
Ratings count
monthly, 3 months
Latest, 19 Oct 2026:1 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Diffsurge MD
Diffsurge MD is a privacy-first browser extension that intercepts files (PDFs, Excel, DOCX, etc.) you drop into ChatGPT, Claude, Gemini, and DeepSeek, and instantly converts them into clean Markdown before they are uploaded.
Why use Diffsurge MD?
1. Save Tokens & Money: A typical PDF can drop from ~30k tokens down to ~8k tokens when converted to Markdown. This leads to faster AI replies, lower API costs, and much better context recall.
2. 100% Local & Private: Unlike other tools, Diffsurge MD runs a Python engine (Pyodide + Microsoft MarkItDown) directly inside a WebAssembly worker in your browser. Your files never leave your device for conversion.
3. Seamless Integration: It works automatically. Just drag and drop or click to upload your files into your favorite AI chat interface, and Diffsurge MD handles the rest in the background.
Features:
- Completely free and open-source.
- No telemetry, tracking, or data collection.
- Supports a wide variety of formats out-of-the-box (PDF, DOCX, XLSX, images, etc).
- Optional self-hosted cloud engine available for audio transcription or excessively large files.
Take control of your data and ship less to your LLM today!