ReadFast powered by Spritz
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This extension help everyone to read faster.

Use the official Spritz technology to improve your reading speed. Works on any page with text content. Simply double-click on the text you want to read to start Spritzing. You can also select the text and use the context menu to start Spritzing. If no text is selected, the whole page will be Spritzed. Reading speed is configurable via a slider. Pause is triggered by a click anywhere in the popup or by the CTRL key. Rewind 1 sentence by using the LEFT arrow key. Close by clicking outside of the box or with the ESC key. Double click detection can be disabled by using Alt+S or by clicking on the extension icon. You can Spritz content from outside of the browser, by copying content to the clipboard and hit the CTRL+B shortcut in chrome to start reading the copied text. This is useful for content that cannot be open in chrome. Keyboard shortcuts and other settings are configurable via the options menu. You will be amazed by how fast you can read! Installation instructions: If you want to unlock speed over 450wpm, use the login button and follow the registration steps with Spritz. It is all free. If you have any problem during registration with Spritz, clear your cookies and retry. An android version is also available here: RELEASE NOTES 2.5.0 -Added the Spritz from clipboard functionality. Just hit CTRL+B -Added the possibility to change most of the colors 2.3.3 -You can now Spritz PDF without selecting text first 2.3.3 -Upgrade Spritz SDK to v2.0 2.3.2 -Added an optional progress bar 2.3 -Full PDF support -Added an options menu to configure settings -Font size is now configurable -Added an option to hide background -Vertical position is now configurable -Added a close button 2.2 -Added the possibility to disable the double click detection from the BrowserAction icon or the keydoard shortcut Alt+S 2.1 -"Spritz the full page" now work on local content 2.0 -Added "Read the full page" context menu -Added ESC key to close -Fixed compatibility issue with Evernote Clearly -Integration with Spritz SDK v1.2 1.3 - Integration of official Spritz SDK 1.2 - Added Pause functionnality - Added Rewind 1 sentence - Improved text readability by variation of the display speed according to words and sentences length

3.1 out of 536 ratings

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Greg BakerJun 19, 2024

It looks like it's calling out to -- but DNS doesn't resolve for that. This is probably why people are reporting failures.

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Christian LarsenJun 15, 2024

Does not work, just says "Unable to Spritz"

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Tod SandbergMay 5, 2024

This is not working. But has potential with the hotkeys I tried signing in to Spritz but it results in an error. Please fix.


  • Version
  • Updated
    April 18, 2021
  • Features
    Offers in-app purchases
  • Offered by
    Stéphane Brillant
  • Size
  • Languages
  • Developer
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.


The developer has disclosed that it will not collect or use your data.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes


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