20+ Free AI Tools in One Tab: What Each TextSight Tool Actually Does

Count the tabs open on your machine right now. If you write anything for a living, or for a grade, there is a decent chance you have a word counter in one, a paraphraser in another, a citation generator you only half trust, and an AI detector you keep coming back to because the last one gave you a different number.

That is the actual problem. Not that these tools do not exist. They exist in enormous supply. The problem is that each one lives on its own site, keeps its own history, uses its own colour scheme for “this looks suspicious”, and gives you a score on a scale it never explains. You end up doing the integration work in your head.

TextSight puts the whole set in one place. Everything you are about to read is free to start, no signup for the first run, and every tool ends at the same 0–100 Authenticity Score so the numbers actually mean something next to each other.

This post is the walkthrough. Four categories, every tool, what it does well, and where it stops being useful. I have tried to be honest about the second part, because a tool list that only says nice things is not a guide, it is an advert.

Why one workspace beats twelve bookmarks

Before the tool-by-tool part, the argument for keeping them together.

One score, not twelve scales. A detector that says “78% likely AI”, a readability tool that says “Grade 11”, and a plagiarism checker that says “6% match” are three numbers on three unrelated scales. You cannot add them up. Inside TextSight, every tool reports back on the same 0–100 band, so a piece of writing has one number you can watch move as you edit it.

One visual language. Every tool that flags something at sentence level uses the same colour coding. Once you learn what a highlighted sentence means in the detector, you already know what it means in the grammar checker and the vocabulary spotter.

Shared history. Scan an essay in the detector, rewrite a paragraph, run the plagiarism check, then come back a week later. It is all in one history, attached to one document, rather than scattered across five sites that each forgot you existed.

One account. The same login covers all the tools, the Chrome extension, the WordPress plugin and the API. There is no separate signup per tool.

That is the case for the workspace. Now the tools.

Detect: finding what is not yours, and what is not true

Six tools live here. They answer different questions, and people mix them up constantly, so it is worth being precise about which one you need.

AI Detector

The core tool. Paste text, get a 0–100 score plus sentence-level highlighting showing which lines pushed the number up. It is trained on output from GPT-4, Claude, Gemini, Llama and Mistral rather than a single model, which matters because a detector tuned only on ChatGPT tends to miss everything else.

Use it when: you want to know how a draft reads to a detector before someone else runs it. Editors checking freelance submissions. Teachers looking at a batch. Writers checking their own work because a previous piece got flagged unfairly.

Where it stops: a score is evidence, not a verdict. Short passages under about 200 words are unreliable in every detector on the market, including this one, because there is simply not enough rhythm to read.

Hallucination Detector

Different job entirely. This one is not asking “did a model write this”, it is asking “did a model make this up”. It looks for fabricated facts, invented citations, and sources that do not resolve.

Use it when: you asked an AI for research help and it handed back a confident paragraph with three references. This is the tool that checks whether those references exist.

Where it stops: it flags claims that look fabricated. It cannot confirm a claim is true, only that it cannot be supported.

AI Image Detector

Checks images for signs of generation by Midjourney, DALL·E, Stable Diffusion or Flux.

Use it when: you are sourcing images for an article, verifying a submission, or checking a photo that showed up in your feed and looked slightly wrong in a way you cannot name.

Where it stops: heavily compressed, cropped or re-uploaded images lose the artefacts detectors look for. A screenshot of a screenshot is much harder to call than an original file.

AI Voice Detector

Upload an .mp3, .wav or .m4a and check whether the voice is synthetic. Voice cloning got good fast, and it is now the cheapest fraud tool in existence.

Use it when: you received an unexpected voice note asking for something urgent. Journalists verifying audio. Anyone in a recruitment or finance role where a voice on a call is treated as identity.

Where it stops: phone-quality audio compresses away a lot of the signal. Clean recordings give far more reliable results than a 12-second WhatsApp clip.

Deepfake Detection

Checks a photo, or a single frame pulled from a video, for generation signs. It also walks you through the manual checks worth doing yourself: hands, ears, jewellery, text in the background, reflections, and the way hair meets a shoulder.

Where it stops: this is frame-by-frame, not full video analysis. Pick the frames that carry the most detail.

Plagiarism Checker

Cross-references your text against web and academic sources and highlights matching passages with links.

Use it when: before submission, always. Also useful for the opposite direction, checking whether your own published work has been copied.

Where it stops: correctly quoted and cited material still shows as a match, because it is a match. The tool finds overlap; deciding whether the overlap is legitimate is your job.

Write: getting from a rough draft to something that sounds like you

Six tools, and this is where most people spend their time.

AI Humanizer

Rewrites AI-generated text so it reads naturally. Not word-swapping, which is what most “bypass” tools do and which detectors caught up with a long time ago. The rewrite works on sentence rhythm and structure, because uniform sentence length is the single loudest tell in machine-written prose.

Where it stops: it rewrites how something is said, not whether it is worth saying. A rewritten paragraph of nothing is still a paragraph of nothing.

Paraphraser

Gives you six rephrasings of a sentence. You pick the one that sounds most like you.

Where it stops: it works a sentence at a time. Running a whole essay through it produces something technically different and structurally identical, which is exactly what gets flagged.

Summarizer

Compresses a long piece into three bullets, an abstract, or a single sentence, depending on what you pick.

Use it when: you need to know if a 10,000-word report is worth reading before you read it. Also for writing your own abstracts and meta descriptions.

Where it stops: summaries flatten nuance. If the argument depends on a qualification in paragraph nine, the summary will probably drop it.

Translator

23 languages, including Hindi, Marathi, Tamil and Bengali, with the emphasis on keeping your voice rather than producing textbook-correct output.

Where it stops: idiom is still the hard part in every translation system. Check anything where the meaning depends on a phrase rather than the words.

Essay Outline Generator

Takes a topic and returns a five-section outline with a thesis, evidence slots and counter-points. The counter-points section is the useful bit, since that is what most student essays are missing.

Where it stops: an outline is scaffolding. Submitting the filled-in scaffolding without your own argument is how you end up with a technically complete essay that says nothing.

AI Title Generator

Up to 15 headline options from your draft, each tagged by type: clear, how-to, listicle, question, or benefit. The tags help because they stop you from generating fifteen versions of the same headline.

Refine: the unglamorous tools you will use most

Six tools here, and they are the ones you will actually open every day.

Grammar Checker

Typos, comma splices, tense slips, passive voice, with one-click fixes. It also catches the tense drift that creeps in when you write a piece across several days.

Where it stops: it does not know your style guide. If you deliberately write in fragments, it will argue with you.

Readability Score

Flesch, Gunning-Fog, SMOG and ARI, plus the grade level you are writing at.

Where it stops: these formulas count syllables and sentence length. They cannot tell whether the idea is clear, only whether the sentences are short.

AI Vocabulary Spotter

Highlights the words that give machine writing away. Delve, leverage, embark, paramount, tapestry, testament, and the rest of the family. It is the fastest single improvement you can make to text that reads synthetic, and it takes about thirty seconds.

Text Cleaner

Strips invisible characters, curly quotes, zero-width spaces and the broken line wraps you get when you paste out of a PDF. Worth running before any detector scan, because stray invisible characters can skew results.

Word Counter

Words, characters, sentences, paragraphs, reading time and speaking time. The speaking-time figure is the one people forget exists, and it is the difference between a talk that fits and one that does not.

Text Compare

Side-by-side comparison with insertions, deletions and a similarity score. Also the honest way to check what a humanizer or paraphraser actually did to your text, rather than trusting that it did something.

Research: reading less, checking more

Five tools, aimed at the part of the work that happens before you write a word.

Fact Checker

Verifies claims against trusted sources and returns a confidence score with citations. The natural partner to the Hallucination Detector: one finds the suspicious claims, this one checks them.

Where it stops: it checks against sources it can reach. Very recent claims, and anything behind a paywall, are harder to confirm.

Citation Generator

APA, MLA, Chicago, Harvard, IEEE and Vancouver, built from a URL, DOI or ISBN. Manual citation formatting is pure error surface and no one has ever enjoyed it.

YouTube Summarizer

Paste a URL, get a chaptered summary with key quotes and timestamps. The timestamps let you jump to the useful section and verify rather than take the summary on faith.

PDF Summarizer

Upload a paper or report, get an outline, the key claims, and a TL;DR. Good for literature reviews and competitor reports, where you need to triage twenty documents down to the three that matter.

URL Summarizer

Paste any article URL, get the summary without the ads, popups, cookie banners and newsletter interruptions.

What this looks like as an actual workflow

Individually, none of this is remarkable. Chained together is where the time goes away. Here is a real ten-minute pass on a 1,500-word piece drafted with AI help.

  • Minute 1. Paste the draft into Text Cleaner. Invisible characters and curly quotes gone. This matters more than it sounds, because those artefacts skew every scan that follows.
  • Minute 2. Run the AI Detector. Note the score, and look at which sentences are highlighted. In almost every AI-assisted draft, the flagged sentences cluster in the introduction and the conclusion, because that is where models fall hardest into formula.
  • Minutes 3 to 4. Run the AI Vocabulary Spotter. Replace the flagged words with words you would actually say out loud. This alone usually moves the score more than any rewriting.
  • Minutes 5 to 7. Take the two or three worst-flagged paragraphs through the AI Humanizer, then run Text Compare to see exactly what changed, so you can reject anything that lost your meaning.
  • Minute 8. Fact Checker across the whole piece, because the AI-drafted sections are where the invented statistic will be hiding.
  • Minute 9. Plagiarism Checker. Confirm nothing came through verbatim from a source.
  • Minute 10. Grammar Checker, then Readability Score. Rescan with the detector and compare against the number from minute 2.

That closed loop, scan then fix then rescan, is the whole point. A score you cannot act on is trivia. A score that moves when you change something specific is a tool.

What is free and what is not

Worth being direct about this, because “free tools” pages usually mean “free until you paste anything longer than a tweet”.

Every tool on the list is free to start, and your first scan runs with no account at all. The free tier gives you 3 scans a day, 5,000 characters per scan, 2 lifetime uses of the rewriter, and 3 lifetime file uploads.

Paid plans start at $7.49 a month and buy volume, not accuracy. That distinction matters: the free detector calls the same model as the paid one. Upgrading gets you more scans, longer documents, file and URL ingestion, a monthly rewriter word allowance, and API access from Pro upward. It does not get you a better answer to the same question.

The limits worth knowing before you rely on any of this

No detector is a verdict. Detection is probabilistic. It reads statistical patterns in how text is put together, and human writing sometimes carries those patterns. Non-native English writers get false positives at a higher rate than native speakers, which is a known and unresolved problem across the entire category. A score is one input into a conversation, never the end of one.

Short text is unreliable everywhere. Under roughly 200 words, treat any detection result, from any tool, as a weak hint. There is not enough rhythm in three sentences to read anything from.

Rewriting is not laundering. The humanizer exists so that text you actually own reads the way you write. It is not a way to hand in work that is not yours. That distinction is not just ethics, it is practical: graders increasingly look at process and drafts, and a clean detector score on a document with no revision history is its own kind of flag.

Every tool, linked

The full list in one place, so you can open whichever one you need.

Detect
AI Detector · Hallucination Detector · AI Image Detector · AI Voice Detector · Deepfake Detection · Plagiarism Checker

Write
AI Humanizer · Paraphraser · Summarizer · Translator · Essay Outline Generator · AI Title Generator

Refine
Grammar Checker · Readability Score · AI Vocabulary Spotter · Text Cleaner · Word Counter · Text Compare

Research
Fact Checker · Citation Generator · YouTube Summarizer · PDF Summarizer · URL Summarizer

Or browse the whole set at textsight.ai/tools.

Start with one tool

You do not need to adopt a workflow. Take the draft you are working on right now and run it through the detector. Look at which sentences light up. That one screen tells you more about how your writing reads than any advice post can.

3 free scans daily, no signup needed → textsight.ai