Open a tab, paste your text, click Rewrite. That is the entire setup. TextSight runs entirely in the browser on Chrome, Safari, Firefox, and Edge across macOS, Windows, Linux, iOS, and Android. There is no desktop app to download, no Chrome extension to add, no admin password to ask IT for, and no signup wall before the first rewrite. All three modes (Light, Balanced, Maximum) work in the browser, and if you sign in your history travels with you across every device.
Most searches that begin with "AI rewriter online" want zero friction: open a tab, get a result, leave. Anyone willing to install software or grant browser-extension permissions tends to use a more specific search. This page is built for the no-friction audience.
Desktop AI rewriters ask you to download a Windows or Mac binary, run an installer, and leave an entry in your Programs list or Applications folder. On a personal machine that is a minor annoyance. On a shared library computer, an internet-cafe station, a hotel business-centre PC, or a university lab machine it is often blocked outright. The browser path skips every one of those gates. Open Chrome, type the URL, paste your text. Nothing is left behind when you close the tab.
A growing number of users are rewriting on work or school devices that disallow installing software and disallow adding browser extensions without IT approval. TextSight is a regular HTTPS website, so it passes the same network policies that allow Google Docs, ChatGPT, and Notion. Most users on company laptops can reach the AI rewriter without filing a ticket. The free tier requires no signup, so the workflow does not require a personal account on the corporate browser either.
Chrome extensions that rewrite in-place inside Google Docs or Gmail need permission to read text on every page you visit. That permission is intrusive and most users are right to be careful with it. The browser AI rewriter is a paste-in, copy-out workflow on a single domain (app.textsight.ai). It reads only the text you put into the input box. Nothing else on your browsing session is in scope.
The compute happens on TextSight's servers regardless of which surface you reach it from. There is no "lite" online model and no "full" desktop model. A typical authenticity runs 15 to 20 seconds end to end whether you are on the website, a Chrome extension, or the Android app. The bottleneck is server-side model inference, not your device or your browser.
The online AI rewriter uses standard web technology. No WebAssembly requirement, no service worker dependency, no browser-version gating. If your browser can render Gmail and Google Docs, it can run the AI rewriter.
Chrome, Edge, Brave, Arc, Vivaldi, Opera, Safari, and Firefox on macOS, Windows, and Linux. Tested across stable, beta, and current major versions. The layout is the same in every browser; there are no Safari-only quirks or Firefox-only fallbacks. The result panel renders the same Authenticity Score, the same sentence-level highlights, and the same mode toggle in each one.
iOS Safari and iOS Chrome (which is Safari under the hood on iPhone and iPad). Android Chrome, Samsung Internet, and Firefox for Android. The result panel adapts to small screens, the input box auto-expands to fit pasted text, and the copy button uses the standard navigator.clipboard API so it works on iOS 13.1 and later, Android 10 and later, without a clipboard permission prompt on most browsers.
macOS Ventura and later, Windows 10 and Windows 11, current Ubuntu, Fedora, and Debian releases on Linux, iOS 13.1 and later on iPhone and iPad, Android 10 and later on phone and tablet. Older operating systems work if their browser is reasonably current, but very old combinations (Internet Explorer 11 on Windows 7, Safari on macOS Mojave) are unsupported because TextSight ships modern ES2020 JavaScript.
ChromeOS Chromebooks work out of the box because the browser is the operating system. Linux-on-the-laptop users (Ubuntu, Pop!_OS, Fedora, Arch) often struggle with AI rewriters that ship desktop binaries because the binary is Mac-and-Windows-only. The browser surface removes that constraint completely; the AI rewriter runs the same in Firefox on Ubuntu as in Chrome on macOS.
Three rewrite intensities. Same modes across the website, the Chrome extension, and the Android app. Pick the mode that fits the content; the browser is the canonical surface and gates nothing.
Mild edits that preserve meaning closely. Sentence rhythm shifts slightly, the worst stock GPT vocabulary swaps to less repetitive alternatives, and that is roughly the scope. Right for academic and technical content where accuracy of claims matters more than register. Typical Authenticity Score gain: 25 to 40 points against TextSight's own detector.
The default. Rewrites sentence rhythm, varies sentence length, removes the polite-assistant openers and transition phrase stack (Furthermore, Moreover, In addition, In conclusion), and swaps the vocabulary cluster (delve, tapestry, navigate, multifaceted, robust, leverage) for less templated alternatives. Right for blog posts, essays, and most general content. Typical gain: 40 to 55 points.
Aggressive rewrite that breaks paragraph structure and switches register. Right for casual content like social posts, marketing copy, and conversational writing where voice variation is welcome. Re-read Maximum output before publishing because the meaning preservation is looser than Light or Balanced. Typical gain: 55 to 75 points.
The mode toggle sits directly above the result panel. Run the same text through two modes back to back and compare which rewrite reads more naturally in your voice. Most users settle on Balanced for nine pieces out of ten and reach for Light when the content is a research paper or technical brief that cannot afford meaning drift. Maximum is the right call for social captions and product blurbs.
The website is the canonical product surface on Free, Starter, Pro, and Business. Extensions and the API are additions, not replacements. You never have to install anything to use a paid plan.
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The browser-only workflow does not mean a single-device workflow. If you create an account, every scan and authenticity syncs across the laptop, the phone, the tablet, and the work machine in real time.
Start an authenticity on a laptop during a morning writing session. Switch to a phone on the commute home, open the same TextSight URL, sign in, and the result is already in your history with its original Authenticity Score. Pick up on a tablet that evening with the rewrite still queued, copy the final version, and paste into your CMS. Three devices, one session.
Scan and authenticity history, saved Authenticity Scores, sentence-level highlight evidence, mode preferences (Light, Balanced, Maximum), and billing or subscription state. Nothing is device-specific. You can also start rewriting on the website, finish in the Chrome extension on a different machine, and the history shows both events in order.
The first authenticity works without an account at all. History stays only in the current browser tab and clears when you close it. This is the right path on shared library or hotel machines where you would rather not leave an account session behind. The trade-off is that switching devices later loses the history; signup is the gate for sync.
Synced history is private to your account. TextSight does not use submitted text to train the AI rewriter or detector. Submitted text is encrypted at rest and is purged on account deletion within 30 days. Most other AI rewriters retain pasted text for analytics indefinitely; read each tool's privacy policy before pasting anything sensitive.
The browser surface covers almost every casual and professional use. These four things are real limits of the online-only workflow, and saying so upfront is the right framing.
The AI rewriter requires an internet connection. There is no local model, no Progressive Web App that caches the rewriter, and no offline fallback. If your library Wi-Fi is down or your flight Wi-Fi quit, the AI rewriter is unreachable. On home, office, school, and most public networks this is not a constraint, but plan around connectivity if you are writing on a plane.
The browser AI rewriter is a paste-in, copy-out workflow. If you want one-click rewrites inside Google Docs or Gmail without leaving the page, the Chrome extension is the right surface for that. The extension is an optional convenience rather than a replacement, and most users on the free tier stick with paste-in because it avoids granting page-read permissions.
A few users want to embed the AI rewriter inside an internal tool or LMS via iframe. That path is closed on the public site for security reasons (clickjacking protection, CSP frame-ancestors). The intended way to embed authenticity into another product is the REST API on the Business tier, which is documented, authenticated per key, and rate-limited.
Free tier is paste-only. PDF, DOCX, and TXT file upload starts at Pro. For dissertation chapters or multi-section articles, file upload saves real time over chunking. For one essay or one cover letter, paste works fine. The vast majority of online AI rewriter searches end at paste-only, so most users never need uploads.
The whole flow runs in under 90 seconds from URL to copy-paste. Six steps and you are done.
Chrome, Safari, Edge, Firefox, Brave, Arc. Desktop, tablet, or phone. No installer prompt, no extension prompt, no app store redirect. The site loads in roughly two seconds on a normal connection.
Up to 5,000 characters per pass on the free tier (roughly 800 words). Click Scan first to see the baseline Authenticity Score and sentence-level highlights showing which sentences read AI versus human. This tells you whether the text actually needs authenticity and which parts are the problem.
Light, Balanced, or Maximum. The mode toggle sits directly above the result panel. Balanced is the right default for most content; Light is right for technical writing; Maximum is right for casual social or marketing copy. The rewrite returns in 15 to 20 seconds.
The result panel shows original sentences alongside the rewritten version with the new Authenticity Score. If the score did not move enough, re-run with a more aggressive mode on the same text or on just the still-red sentences. The free tier covers multiple passes within the 1,500-word monthly quota.
Tap or click Copy. The button uses the standard navigator.clipboard API, which works the same on iOS Safari, Android Chrome, and desktop, with no clipboard permission prompt on most browsers. Paste into Google Docs, Word, Notion, your CMS, or wherever the final draft lives.
No background process keeps running. No scheduled sync. No install record on the device. If you skipped signup, no history is retained beyond the closed tab. If you signed in, the result is in your synced history across every device on the account.
The main AI rewriter landing page covering every source model and all three modes.
Open AI rewriter →1,500 free AI rewriter words a month with no signup. Highest free quota in the category.
See the free tier →How the three-stage rewrite targets the exact voice patterns GPT-4 ships with.
Read the deep dive →Full tier breakdown for Free, Starter, Pro, and Business. Annual billing saves 25%.
See pricing →Open a tab, paste your text, click Rewrite. All three modes work in the browser on the free tier. Sign in to sync history across devices. Your first authenticity in about fifteen seconds.