Alexandria

Alexandria vs Read Aloud: Which Free TTS Chrome Extension Is Better in 2026?

• By Elliott Tong

Alexandria is a free Chrome extension with word-by-word synced highlighting and neural voices via the Kokoro model. Read Aloud is a free, open-source Chrome extension that supports multiple voice engines including browser-native, Google WaveNet, and Amazon Polly. The main differences are voice quality, highlighting accuracy, and the Gmail integration. Alexandria adds a play button directly inside Gmail; Read Aloud does not.

Key Facts

Read Aloud is free, open-source, and requires no account. It supports 40+ languages using browser-native voices or cloud engines with a user-supplied API key [Read Aloud Chrome Web Store, 2026].

Alexandria is free with a neural voice (Kokoro model) included. No API key required to access high-quality voice output.

Read Aloud's word-level highlight has reported accuracy issues. Independent testers describe it as "jittery", landing on the wrong word before correcting [CastReader, 2026].

Alexandria includes autoscroll, which keeps the current sentence centred on screen as audio plays. Read Aloud does not autoscroll.

Both extensions are desktop Chrome only. Neither supports mobile browsers.

Read Aloud supports offline playback using browser-native voices. Alexandria requires an internet connection for neural voice audio.

Quick Summary

Read Aloud is one of the most downloaded free TTS Chrome extensions, with a long track record and a wide voice selection. Its open-source model means no subscription, no account, and no data concerns about a commercial company behind the product. It supports a large range of languages and voice engines, including premium cloud voices if you bring your own API key.

The main areas where Read Aloud falls short are voice quality out of the box (browser-native voices sound robotic compared to modern neural models) and highlighting accuracy. Independent testing has found that Read Aloud's word highlight can jump ahead or land on the wrong word, which breaks the visual-tracking benefit of synchronised audio.

Alexandria uses neural voices by default without requiring an API key, and its word-by-word sync is designed for accuracy rather than approximate highlighting. It also adds native Gmail integration that Read Aloud lacks.

For users who want a genuinely free tool with no account and don't mind the voice quality trade-off, Read Aloud is a solid choice. For users who want accurate word highlighting and better voice quality at no cost, Alexandria is the stronger option.

Feature-by-Feature Breakdown

Word-by-Word Highlighting

This is the area where the tools differ most noticeably. Alexandria's highlighting syncs each word to the audio output and moves smoothly through sentences. Read Aloud provides a word-level highlight, but independent reviewers note it can be jittery, landing on the wrong word, correcting itself, then jumping ahead [CastReader, 2026]. For readers who rely on visual tracking to follow along (a technique linked to improved comprehension and memory via dual-coding theory [Paivio, University of Western Ontario, 1971]), a highlight that jumps around reduces the benefit. The visual and auditory signals need to line up for the dual-channel effect to work.

Speed Control

Both tools offer adjustable speed. Alexandria uses a multiplier system (0.5x to 3x). Read Aloud uses a speed slider in its Options page. The exact range in Read Aloud depends on the voice engine selected, with browser-native voices covering a different range from cloud voices. Both tools are free for their respective speed ranges. For users who want a clear, reliable speed setting, the multiplier system in Alexandria is more predictable.

Voice Quality

Read Aloud's quality depends entirely on which voice engine you select. Browser-native voices (available offline, no setup) sound noticeably robotic. Google WaveNet and Amazon Polly voices are much better but require you to obtain and enter an API key from those services, which costs money per character at scale. Alexandria uses the Kokoro neural model by default. No API key needed, and the quality is closer to premium cloud voices than browser-native voices.

Privacy and Data

Read Aloud is open-source and does not sell user data or require an account. Browser-native voices process text entirely on your device with no data leaving your machine. Cloud voices (WaveNet, Polly) send text to those providers' servers. Read Aloud's privacy page states it does not collect personal data [Read Aloud Chrome Web Store, 2026]. Alexandria uses encryption to protect your content during text-to-speech conversion. We never store your content. It is only used to generate the audio and is immediately discarded.

Platform Support

Both Alexandria and Read Aloud are Chrome extensions for desktop browsers. Neither runs on mobile. Read Aloud supports a wider range of browser environments and can work with browser-native voices in offline mode. Alexandria requires an internet connection to generate neural voice audio. For offline reading in a library or on a plane, Read Aloud is the option that works without a connection.

Pricing Comparison

Both tools are free. Neither requires a subscription for core functionality.

Read Aloud: 100% free, no account required, no ads. Premium cloud voices (Google WaveNet, Amazon Polly, IBM Watson, Microsoft Azure, OpenAI) are available but require a paid API key from those providers. Browser-native voices have no ongoing cost.

Alexandria: Free with neural voice (Kokoro model) included. No API key required. Premium plans are available for additional features beyond core listening.

For users who want zero cost and no account, Read Aloud is the simpler entry point. For users who want better default voice quality without managing an API key, Alexandria is the lower-friction choice.

Who Should Choose Which

Choose Alexandria if...

You want accurate word-by-word highlighting that tracks cleanly with the audio. You want good voice quality without setting up an API key. You use Gmail and want a play button inside the email interface. You want autoscroll to keep the current sentence on screen. You're comfortable creating a free account.

Choose Read Aloud if...

You want a completely free tool with no account and no data sent to a commercial service. You want offline support using browser-native voices. You want to read in 40+ languages. You already have API keys for Google WaveNet, Amazon Polly, or Microsoft Azure and want to plug them in. You prefer open-source software.

How to Get Started with Alexandria

Switching from Read Aloud takes under a minute. Here is the complete process:

1

Install the Alexandria Chrome Extension

Go to the Chrome Web Store and search for "Alexandria" or visit alexandria.live for the direct install link. Click "Add to Chrome" and confirm the permissions. The extension needs page access to read web content aloud.

2

Open the web page you want to listen to

Navigate to any article, news page, or online document. Alexandria places a play button on the page automatically. There is no separate reader mode or text extraction step.

3

Click play and follow the word highlight

Click the play button to start. Each word lights up as it is spoken and the page scrolls automatically to keep the current sentence in view. If you were using Read Aloud before, the experience is similar but with smoother highlight tracking.

4

Set your speed

Click the speed control to choose your playback rate. The range is 0.5x to 3x. If you were using Read Aloud at a particular speed, try matching it first. Most people settle between 1.25x and 2x after a few sessions.

5

Try listening to a Gmail email

Open Gmail in Chrome and click on any email. Alexandria adds a play button inside the email view. This is a step up from Read Aloud, which requires you to select or extract text to activate TTS on Gmail.

6

Use keyboard shortcuts for control

Space to play/pause, right arrow to skip forward, left arrow to skip back, ] to speed up, [ to slow down. These shortcuts are the same regardless of which page you are on and work without clicking the extension popup.

Alexandria vs Read Aloud: Feature Comparison

FeatureAlexandriaRead Aloud
Word-by-word highlighting✓Yes (reported accuracy issues)
Autoscroll✓✗
Speed control0.5x–3xAdjustable (range varies by voice)
Voice quality (default)Neural (Kokoro model)Browser-native (robotic default)
Premium voices without API key✓✗
Free to use✓✓
Account requiredOptional (for library)✗
Gmail play button✓✗
Offline mode✗Yes (browser-native voices)
Open source✗✓
Language supportEnglish40+ languages

* Comparison based on publicly available information. Features and pricing may vary.

Frequently Asked Questions

Is Alexandria better than Read Aloud?

Alexandria has better default voice quality (neural voices included, no API key needed) and more accurate word-by-word highlighting. Read Aloud is stronger for offline use, multilingual reading, and users who want a no-account tool with open-source transparency. Neither costs money for core features.

Is Read Aloud completely free?

Yes. Read Aloud is free to install and use with no account, no subscription, and no ads. Browser-native voices have no ongoing cost. Premium cloud voices (WaveNet, Polly, Azure) require you to supply your own API key, which may incur costs depending on your usage volume.

Does Read Aloud have word-by-word highlighting?

Read Aloud does provide word-level highlighting, but independent reviewers have noted it can be jittery. The highlight sometimes lands on the wrong word before correcting itself [CastReader, 2026]. Alexandria's word-by-word sync is designed to track cleanly with audio output.

Can I use Read Aloud offline?

Yes, with browser-native voices. Read Aloud can use the voices built into your operating system, which work without an internet connection. Premium cloud voices require internet access. Alexandria requires an internet connection for its neural voice output.

Does Read Aloud work with Gmail?

Read Aloud can read text on Gmail pages but does not add a play button directly inside individual email views. You typically need to select the email body text or use a reader mode. Alexandria adds a play button natively inside Gmail so you can listen without extra steps.

Which has better voice quality, Alexandria or Read Aloud?

Alexandria's default neural voice (Kokoro model) sounds more natural than Read Aloud's default browser-native voices, which are often described as robotic. Read Aloud can match or exceed this quality by connecting to Google WaveNet, Amazon Polly, or Azure, but those voices require an API key that may incur costs.

Is my content private when using Read Aloud?

When using browser-native voices, all text processing happens on your device with no data sent externally. When using cloud voices (WaveNet, Polly, Azure), text is sent to those providers' servers. Read Aloud does not collect personal data and is open source [Read Aloud Chrome Web Store, 2026]. Alexandria encrypts your content during conversion and discards it immediately after audio is generated.

Does Read Aloud support languages other than English?

Yes. Read Aloud supports 40+ languages through browser-native voices and cloud engines. Alexandria currently focuses on English. If you need to listen in French, Spanish, German, or other languages, Read Aloud is the more capable tool.

Can I switch from Read Aloud to Alexandria?

Yes. Install the Alexandria Chrome extension and it works alongside or instead of Read Aloud. There's no content to migrate. Both tools read web pages directly. You can keep both installed and use each where it works best.

Is Alexandria open source like Read Aloud?

No. Alexandria is a commercial product with a free tier. Read Aloud is open source and its code is publicly available. If open-source transparency is a requirement for you, Read Aloud is the appropriate choice.

Which tool is better for people with dyslexia?

Both tools can help. For dyslexic readers, accurate word-by-word highlighting is particularly important because it helps the eye track text. Alexandria's cleaner highlight sync may be more useful if visual tracking is part of how you read. Read Aloud's broader language support and offline option give it advantages in specific contexts. Both are free to try.

Does Alexandria autoscroll like Read Aloud?

Alexandria includes autoscroll, which keeps the current sentence centred on screen as audio plays. Read Aloud does not have autoscroll. For long articles where you'd otherwise need to scroll manually, Alexandria's autoscroll keeps you on track without interrupting listening.

Try Alexandria Free

Accurate word-by-word highlighting, neural voices without an API key, and full speed control. Both extensions are free — try Alexandria and see which suits you.

Add Alexandria to Chrome — Free

Takes 30 seconds to install. No account required to start.