Free tools

Sentiment analysis, right in your browser

Paste reviews, survey answers, or feedback — one per line — and get instant positive/negative scoring. Honestly labeled: lexicon-based and fully client-side, which is why nothing needs uploading.

Runs 100% in your browser — this page makes no network request with your data.

  1. 1

    Paste text with one response per line (or load the sample reviews).

  2. 2

    Each line gets a sentiment score; totals summarize positive / neutral / negative.

  3. 3

    Export the scored lines to the workspace for AI-grade analysis with segments and charts.

Worked example: triaging 8,000 post-purchase survey comments

A customer-experience analyst has 8,000 open-ended answers from a post-purchase survey and needs a fast read before the weekly meeting. They paste the comments into the sentiment analyzer, one response per line.

Each line is scored against the positive and negative word lexicons, and the totals summarize how many responses landed positive, neutral, and negative. Within seconds the analyst can see that returns-related comments skew sharply negative while delivery comments skew positive, enough to know where to dig. Because the scoring is lexicon-based and runs entirely in the browser, none of the customer feedback is sent to an outside API, which keeps a privacy-sensitive dataset in-house.

Lexicon scoring is deliberately a first pass, weaker on sarcasm and mixed sentences, so the analyst exports the scored lines to the workspace. There the responses are analyzed with full context, crossed against structured survey fields, and turned into a shareable report with charts and segments.

Frequently Asked Questions

Everything you need to know about using AnalyzeData.

It scores each line against curated positive and negative word lexicons — a transparent, classical method that runs instantly in your browser. It is deliberately not a black-box model, which also means no data ever leaves your device.

Good for quick triage of clearly-worded feedback; weaker on sarcasm and mixed sentences. For serious survey work, export the scored lines to the workspace, where analysis runs with full context — or see our survey analysis solution.

Yes, as a first pass: paste the responses, review the split, then send the scored set to the workspace to cross it with your structured answers.

Yes, that is the point of this tool. Scoring uses curated positive and negative word lexicons and runs entirely in your browser, so the reviews or survey answers you paste are never transmitted to an external service or model. It is a transparent, classical method rather than a black-box API, which is exactly why nothing needs to leave your device.

Score the text here for a quick positive and negative split, then export the scored lines to the workspace. There the results become charts and segments, can be crossed with your structured survey fields, and are packaged into a themed, shareable report with a live link and PDF, the deliverable the quick in-browser pass is meant to feed.

When a table isn't enough

The workspace runs verified AI analysis on the same file and turns the results into a report you can send.

Analyze this data instead