Free Chrome Extension 
Master Your Backlog.
Read the Web at 500 WPM.
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Early Adopters
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Average Reading Speed
0
Comprehension Retained
Optimized for your daily workflow
ChatGPT 
Claude 
Gemini 
Perplexity 
GitHub 
Substack 
Medium 
Notion 
Reddit 
Hacker News 
Stack Overflow 
Google Docs 
LinkedIn Reading online shouldn't feel like a marathon
The way we read hasn't kept up with the way we work.
Cognitive Burnout
Reading isn't just slow - it's exhausting. The constant eye movement and mental reconstruction of meaning burns cognitive resources you need for deep work. By the afternoon, you're fried.
Two modes. One goal: read faster, retain more.
Flash Mode (RSVP)
Words appear one at a time in the center of your screen. Your eyes stay fixed - no scanning, no tracking.
Best for:
- Dense articles
- Documentation
- First-time reading
Focus Mode (Bionic)
Reading is one of the most powerful tools we have for learning and growth.
See all text at once, with the first part of each word bolded. Your eye naturally jumps from anchor to anchor.
Best for:
- Reviewing content
- Finding specific info
- Your own pace
Built for Minds That Move Fast
TempoLens was designed with ADHD and dyslexia in mind - not as an afterthought, but from the start.
Accessibility features:
- External pacing reduces wandering
- Reduces visual crowding
- Adjustable font size and display
- Customizable colors and sizing
- 6 themes including OLED
It understands what you're reading
TempoLens doesn't just blast words at you. It detects content structure and adapts.
| 📝 Paragraphs | Word-by-word RSVP |
| 📋 Lists | Displayed as full blocks |
| 💻 Code blocks | Syntax highlighted, paused |
| 📊 Tables | Shown complete with structure |
| 🏷️ Headings | Context markers, brief pause |
Example: reading documentation
const config = {
speed: 350,
mode: 'rsvp'
}Code stays code. Lists stay lists. You're not mentally reconstructing structure while speed reading.
Optimized for the AI Era
LLMs speak in Markdown - and so does TempoLens. Whether it's a long-form Claude analysis or a complex ChatGPT technical breakdown, our engine respects the structure, ensuring you never lose your place in the headers or code blocks.
Everything you need, nothing you don't
Built for knowledge workers who value speed, privacy, and comfort.
Works on Any Webpage
Gmail, Notion, Twitter, PDFs
Select text. Hit the TempoLens shortcut. Start reading. No copy-paste. No app switching. No workflow disruption.
One-click activation on any website - no setup required.
Read Comfortably - Day or Night
6 Carefully Designed Themes
Choose from Light, Dark, OLED, Sepia, Midnight, and High Contrast. Adjust font, size, and ORP color to match your preference.
For the 10 PM grind: OLED mode reduces eye strain during late-night sessions.
Read Anything, Anywhere
Clipboard Mode
Copy text from a PDF, image, or locked webpage. Open TempoLens. It's already loaded. Perfect for research papers, screenshots, and email threads.
The "Read It Later" killer - paste directly into the floating reader.
Your Reading is Yours
Privacy-First Design
TempoLens doesn't track what you read, where you read, or how much you read. All data stays on your device. We don't see it. Ever.
GDPR compliant. Unlike competitors, we don't sell your data.
AI-Native Consumption
The AI Feedback Loop
AI generates ideas faster than you can read them. TempoLens closes the gap by parsing structured LLM outputs - headings, bullet points, and code blocks - into a frictionless RSVP stream.
From ChatGPT prompts to Claude research, consume AI insights at the speed they're created.
Prove It To Yourself in 60 Seconds
Read the paragraph below at your normal pace. We'll instantly replay it at a speed your brain can handle, but your eyes couldn't.
Traditional Reading
Reading... 0s
RSVP Reading
Complete the reading test to unlock
See? Your brain can handle more than you think.
RSVP works because traditional reading wastes time on eye movement. When words appear in a fixed position, your brain processes meaning directly - no scanning, no backtracking, no losing your place.
Tips to read even faster
Quiet your inner voice
You don't need to "hear" every word in your head. With practice, you'll process meaning directly.
Trust your brain
Your visual cortex processes faster than you realize. Start 20-30% above your comfort zone and adjust.
Practice daily
Even 10 minutes a day builds speed. Most users gain 50-100 WPM within two weeks.
Use two passes
Flash Mode for speed, Focus Mode for review. This combination maximizes retention.
Lock In This Speed
Lock In This Speed - Install ExtensionBuilt for people who read a lot
For Founders & PMs
"5 newsletters in 20 minutes. I finally stay on top of industry news without it eating my morning."
Common reading:
- Industry newsletters
- Market reports
- Competitor content
- Product specs
- User feedback summaries
Why TempoLens is the 2026 Standard
Spritz
The Original RSVP
- Engine RSVP Only
- Bionic Reading Not included
- Privacy Analytics tracking
- Themes 3 (Dated gray UI)
- Price $7.99/mo
- Last Update 2024
- Rating 3.9/5
TempoLens
The Modern Standard
- Engine RSVP + Bionic Hybrid
- Bionic Reading Included
- Privacy 100% local processing
- Themes 6 (inc. OLED and Sepia)
- Price Free / €4.99/mo / €79 lifetime
- Last Update 2026 (Active)
- Rating New Launch
Reedy
The Free Alternative
- Engine RSVP Only
- Bionic Reading Not included
- Privacy Unknown
- Themes 2 (White / Basic)
- Price Free (Unmaintained)
- Last Update 2019 (Abandoned)
- Rating 3.2/5
Stop paying monthly subscriptions for 2015 technology. TempoLens is built for the modern web.
Most speed readers teach you to skip words. TempoLens helps you read every word — at a faster, steadier pace.
Three steps to faster reading
Select
Highlight any text on any webpage (50+ characters). The TempoLens widget appears instantly.
Read
Click 'Read' to open the speed reader. Choose Flash Mode for word-by-word or Focus Mode for bionic text. Adjust speed with the slider.
Export Optional
Done reading? Export to clean Markdown for your notes app. Headings, lists, and code stay formatted.
Free Forever. Pro When You Need It.
No subscriptions. No lock-in. Own your productivity.
Free
- 15 reads per day
- 3 exports per day
- Flash Mode (RSVP)
- Focus Mode (Bionic)
- Smart block detection
- Speed calibration
- Light & Dark theme
The Knowledge Worker's Pass
- Unlimited reads
- Unlimited exports
- All reading modes
- All 6 themes
- Advanced accessibility options
- Priority support
- Early feature access
Not sure? Try the reading test above to see if RSVP works for you - no signup required.
Pro Pricing Options:
Monthly
€4.99/mo
Yearly
€49.99/yr
Founding Member License
€79
€149
Launch price ends March 1, 2026
All plans include 7-day free trial. No credit card required to start.
All upgrades happen securely inside the TempoLens extension.
Frequently asked questions
Not with RSVP. By eliminating eye movement (saccades), your brain dedicates 100% of its energy to processing meaning. Studies show RSVP readers maintain 85 - 95% comprehension at 2 - 3x normal speed. You read every word - just faster.
TempoLens is cheaper (€4.99/month vs Spritz at $7.99/month - 38% savings), includes Bionic Reading (Spritz does not), is privacy-first (we do not track your reading habits, Spritz does), and offers better customization with 6 themes vs Spritz at 3.
Reedy has not been updated since 2019 and is effectively abandoned. Bugs pile up, modern websites break it, and there is no support. TempoLens is actively developed with Bionic Reading integration, a modern UI that works on all websites, smart content detection (lists, code blocks), and regular updates and support.
Yes. Use our "Clipboard Mode" to read text from anywhere - PDFs, Google Docs, emails, or ChatGPT responses. Native PDF support (one-click reading) is coming in v2.0 (Q2 2026).
Yes - and it is one of the best use cases. LLM outputs are perfectly structured (headings, bullet points, code blocks) which is exactly what TempoLens is built to parse. Instead of scrolling through a long ChatGPT response or Claude analysis, select the text, hit the shortcut, and read it at 2 - 3x speed with full structure preserved. Many users say this is the feature that made TempoLens indispensable.
Reader View just removes ads and formats text. It does not change how you read. TempoLens physically changes how you read, forcing your brain to absorb information 3x faster using RSVP technology. Reader View = cleaner page. TempoLens = faster brain.
About 5 minutes. Start at 300 WPM and increase by 50 WPM every few sessions. Most users hit 500 WPM within a week. The interactive reading test on this page will help you find your starting speed.
Not yet. TempoLens is Chrome-only for now (also works on Edge and Brave). Mobile apps are on the roadmap for late 2026.
The free tier is forever (15 reads/day). No credit card required. Premium has a 7-day free trial and refunds are available within 7 days - no questions asked.
Yes. The Free Forever plan gives you 15 reads every single day. No credit card required. Upgrade only if you are a power user (unlimited reads, all themes, export features).
Traditional speed reading (skimming) often does. RSVP is different. By keeping your eyes fixed and feeding words directly to your Optimal Recognition Point, your brain processes meaning at its natural speed - not your eye's slow scanning speed. Studies show 90%+ retention.
Information burnout is often caused by Allostatic Load - the physical fatigue of your eye muscles (saccades) triggering a stress response in your nervous system. TempoLens eliminates eye movement, allowing you to process data while remaining in a calm state. Think of it like replacing a treadmill with a conveyor belt. Same distance covered, but you are standing still - so you are not exhausted at the end.
Absolutely. ADHD brains often struggle with executive function during long-form reading - it is hard to maintain focus when your mind naturally wants to jump ahead or wander. TempoLens provides an external "tempo" that anchors your attention. Many ADHD users report that Flash Mode feels like having a "metronome for reading" - it creates a rhythm that is easier to stay locked into than traditional page scanning. Pro tip: Start at 250 - 300 WPM and adjust up as you find your groove.
Yes. Beyond our Bionic highlighting (which helps with decoding), TempoLens allows you to customize font size (16px to 48px), high-contrast OLED themes, and custom color schemes. These features specifically target the "Visual Crowding" effect common in dyslexia. By displaying words one at a time in Flash Mode, you eliminate crowding entirely - each word gets the full visual field.
Available on Chrome. Expanding soon.
TempoLens is currently available on Chrome and Chromium-based browsers. Edge and Firefox support are coming soon.
Chrome / Chromium
Available now
Brave / Arc / Vivaldi
Available now
Edge
Coming soon
Firefox
Coming soon
Want early access for Edge or Firefox? Join the waitlist.
Ready to read faster?
Join thousands of readers who've upgraded their reading game. Free to start, no credit card required.
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