Is my file sent to a server?

No. Only the model weights are downloaded. Your images and text are processed inside your browser.

Why is the first run slow?

The model has to download once. After that it loads from the browser cache in a few seconds.

My computer has no WebGPU. Does it still work?

Yes. The model runs on the CPU in a background worker. It is slower but the page stays responsive, and you can cancel at any time.

Are my files uploaded?

No. This tool runs entirely in your browser tab. Files are read from your disk into memory and the result is generated locally.

Is it free? Are there limits or watermarks?

Free and open source (MIT). There are no file-size caps, daily quotas, accounts or watermarks.

Does it work offline?

Yes, once the page (and any engine it needs) has loaded, it keeps working without a connection thanks to the service worker cache.

Home / AI / Sentiment Analyzer

Sentiment Analyzer

Score reviews, comments or survey answers as positive, neutral or negative, line by line or from a CSV.

Free, no uploads, no sign-up. Runs 100% in your browser.

How Sentiment Analyzer works

The model runs with Transformers.js and ONNX Runtime inside a background worker, so the page never freezes. It downloads once from the Hugging Face model hub and is then cached by your browser, so it works offline. With WebGPU it uses your graphics card, without it the CPU. Your files are never uploaded. The AI mode uses DistilBERT fine-tuned on movie reviews. Word list mode scores known words instantly with no download.

Input: Text, CSV, TXT, PDF, DOCX. Output: CSV.

How to use Sentiment Analyzer

Paste text or open a CSV and pick the column.
Choose each line, each paragraph or the whole text.
Press Analyse.
Download the results as CSV.

Tips

The AI model reads English best.

Sentiment Analyzer FAQ

Is my file sent to a server?: No. Only the model weights are downloaded. Your images and text are processed inside your browser.
Why is the first run slow?: The model has to download once. After that it loads from the browser cache in a few seconds.
My computer has no WebGPU. Does it still work?: Yes. The model runs on the CPU in a background worker. It is slower but the page stays responsive, and you can cancel at any time.
Are my files uploaded?: No. This tool runs entirely in your browser tab. Files are read from your disk into memory and the result is generated locally.
Is it free? Are there limits or watermarks?: Free and open source (MIT). There are no file-size caps, daily quotas, accounts or watermarks.
Does it work offline?: Yes, once the page (and any engine it needs) has loaded, it keeps working without a connection thanks to the service worker cache.

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