Come visit our exhibit at DisplayWeek 2026. Giant UFO Announcement Tomorrow 👽

Visit the new TestUFO LCD Museum today! The new LCD Simulator. Adjust GtG and overdrive, completely in your web browser. You can simulate a fast 2025 IPS LCD... ...or a very old 1989 monochrome laptop LCD.

Don't just test mouse lag. Test mouse jitter too. - 1000, 2000, 4000, 8000 Hz polling - Test with 600 Hz, 720 Hz, 1080 Hz display - Harmonics more visible if Display Hz *nearer* Mouse Hz - Supersample mouse Hz by 2-4x+ if prioritizing visuals - Left = 1000 Hz poll, Right = 8000 Hz poll

MacOS users -- Help Blur Busters!  Mac Mini, MacBook Air, Pro, Neo, etc -> Please quickly test TestUFO Beta with SMOOTHER frame pacing on Macs using instructions on MacRumors Forums: forums.macrumors.com/threads/120h...

120Hz Stutter-Free TestUFO Beta: Please help test my new de-stuttering/framepacing logic

I need a few Mac users on Macs very different than my MacBook Pro M1; to test an upgraded motion fluidity workarounds. I did some very unconventional (xkcd #1172 style) motion fluidity optimizations ...

forums.macrumors.com

When I was barely out of my teenage years -- I used to have a three-CRT projector. Some of these Sony big-box rear projection had three tiny 7 inch CRTs blowing up to 61 inches. But some were DLPs. Me way back in year 1999:

Upcoming Windows 11 Supports 5000 Hz Display Refresh Rate. You're welcome. blurbusters.com/new-version-...

Upcoming Windows 11 Supports 5000 Hz Display Refresh Rate - Blur Busters

A Microsoft blog entry mentions that Windows 11 Release Preview 26100.8106 and 26200.8107 now supports above 1000 Hz. Monitors can now report refresh rates higher than 1000 Hz. What's little known is ...

blurbusters.com

Retina refresh rate is extremely high! 5-digit Hz. Kudos to techless for fantastic video (39,620 Hz, though estimated ~20,000 Hz a few years ago). There are 4 main visibility thresholds. Expand this post to dive into rabbit hole for a moment 🕳️🐇ִֶָ

Thanks for having me on the program Bob!

Blur Busters Victory -- NVIDIA Listened to Community G-SYNC Pulsar firmware upgrade coming to support optionally extended Pulsar range as wide as 48-360 Hz blurbusters.com/nvidia-liste...

NVIDIA Listened – G-SYNC Pulsar Refresh Rate Range Widened To Optionally Include 60 Hz - Blur Busters

NVIDIA's impressive but heavily delayed monitor that combines ULMB2 and G-SYNC into one technology, GSYNC Pulsar. After almost two years of engineering, the monitors are finally about to ship to retai...

blurbusters.com

Finally. Merry Christmas! Reliable CRT beam simulation for Windows Desktop. Best when used with 2 GPUs. One big GPU for game, one little iGPU for CRT simulator.

@mausimus.bsky.social · 7mo ago

Introducing ShaderBeam - ShaderGlass' sister app focusing on applying @blurbusters.com CRT Beam Simulation technology to Windows desktop. Re-experience the motion clarity of CRTs on a modern high-refresh display. Free and open source. github.com/mausimus/Sha...

PRESS RELEASE - Official Public TestUFO 3.0 Announcement. TestUFO 3.0 Upgrades: - Faster, Mobile friendly - Custom scaling, 1:1 scale, 200%/400%, square pixels - WebGL & shaders, WCG/HDR, Display-P3 & Rec.2020 - 1000+ Hz support (with tweak) - Improved settings screen blurbusters.com/announcing-t...

- Blur Busters

Blur Busters is excited to announce Version 3.0 of TestUFO has been launched at testufo.com! What is TestUFO? TestUFO is the world's most popular web-based display testing suite, used by many hundreds...

blurbusters.com

@marat-tanalin.bsky.social Please view: forums.blurbusters.com/viewtopic.ph... And zoom your browser & adjust OS DPI to see what happens.

The world's most popular display testing site is ready. Version 3.0 of TestUFO is now flying. 🛸 Go check it out.

TestUFO Display Tests Suite Version 3 is Launching in T-1 Day SNEAK PEEK: 🎨 Improved HDR Test 🎨 Multiple selectable colorspaces 🎨 Display-P3 support 🎨 Rec.2100 support 🎨 Clearer Instructions 🎨 WebGPU support will come in TestUFO 3.1 🎨

Launch Countdown Resumes at T-2 Days! 👽 Zapped many TestUFO 3.0 bugs 👽 Warp speed ahead! 👽 New public TestUFO 3.0 beta live! 👽 Press release mid-week 👽 Fancy new settings screen 👽

TestUFO 3.0 Webapp Launch Countdown T-3 Days! <Feature Broadcast> 📺 webgl support and shadertoy support 📺 CRT electron beam simulator 📺 software based motion blur reduction demo 📺 realtime mode 📺 slomo mode 📺 reduce sample & hold blur 📺 open source display sim shaders 📺

Transmission Alert: TestUFO Version 3.0 is launching in T-4 days

Blur Busters@blurbusters.com · 9mo ago

TestUFO Mothership Alert: 3.0 Launch in T-4 Days /Incoming Subspace Transmission/ 📡 new native resolution test pattern 📡 custom pixel scaling 📡 smooth & pixelated 📡 1:1 native resolution 📡 optional override of browser zoom & system dpi 📡 nearest neighbour pixelated mode 📡

TestUFO Version 3.0 Launch Countdown: 🚀 T-5 days DAILY STATUS ✨ new version of worlds most popular display testing website ✨ countdown paused to fix bugs ✨ countdown resumed to launch after current holidays {Halloween, Día de Muertos} ✨ sneak preview of new native-rez feature ✨

ViewSonic XG2431 Big Deep Dive Piece! 💥 Guest writer 'Discorz' spends over a year testing motion blur reduction capabilities of XG2431. Tells you how to custom-tune PureXP strobe performance for stellar crosstalk-free motion clarity without double images. blurbusters.com/viewsonic-xg...

ViewSonic XG2431 Analysis – A Blur Busters Fan’s Deep Dive of Motion Blur Reduction # - Blur Busters

ViewSonic XG2431 Analysis – A Blur Busters Fan’s Deep Dive of Motion Blur Reduction Foreword by Blur Busters Founder Mark Rejhon I helped ViewSonic create one of the world's most flexible motion blur ...

blurbusters.com

Apple Vision Pro M5 running TestUFO: Mythbusters Adam in Adam Savage's Tested, uses TestUFO to confirm that the Apple Vision Pro M5 Safari Browser supports 120Hz out of the box without needing to adjust "Prefer Page Rendering Updates Near 60fps" setting. www.youtube.com/watch?v=LzZ2...

Tested: Apple Vision Pro M5 Review!

YouTube video by Adam Savage’s Tested

youtube.com

Seasonal Mini Update! 1. Blur Busters won two blue ribbon prizes at conventions (DisplayWeek 2024, 2025) 2. Blur Busters is about to launch TestUFO 3.0 this month. 3. Yes, we know, the other website badly needs updates. 4. We're in skunkworks mode. There will be a major 2026 product announcement.

Scotty, we need more compute power!

Mark Rejhon@mdrejhon.bsky.social · 11mo ago

A steampunk way of describing GPUs is calling them "math cannons". That's what Charles Babbage would call them in the 19th century -- whether it's over a teraflop of FP64 or over a petaflop of FP4 -- of either an NVIDIA RTX 5090 or Radeon RX 9070 XT.

Machine from year 2015 with a built in browser? Or an old XP-powered Internet Explorer retro gaming system? Or old SmartTV browser? You can use TestUFO 1.0 at old.testufo.com It runs in many very ancient browsers.

Blur Busters TestUFO Motion Tests. Benchmark for monitors & displays.

Blur Busters UFO Motion Tests with ghosting test, 30fps vs 60fps vs 120hz vs 144hz vs 240hz, PWM test, motion blur test, judder test, benchmarks, and more.

old.testufo.com

TestUFO now has several dozens of different display motion tests! And more is about to launch with the upcoming TestUFO 2.2 including the long-awaited CRT Simulator.

720 Hz OLED FTW

Good afternoon Display Geeks at DisplayWeek! Mark Rejhon is at DisplayWeek and open for new business, or just to talk shop.

Deciding how to bust display motion blur? BFI? Strobing? CRT? Framegen? Organic? Etc? Users choose! William writes about blur busting methods including flicker-based (BFI, CRT, strobing) and flickerless (framerate-based, framegen-based, etc)

Flicker vs Framegen: Blur Busting via BFI/CRT/Strobing or via Extra Frame Rate Methods - Blur Busters

Using strobing and interpolation to improve your motion fidelity.

blurbusters.com

Want VRR in Google Chrome / Safari / FireFox? Newly simplified web browser VRR standardization proposal at WICG Proposals: github.com/WICG/proposa... Helps WebGL and WebGPU apps, and would help TestUFO too! If you're a web developer, comment!

PROPOSAL: (VRR) Simplest Incubatation Path for Variable Refresh Rate (FreeSync / GSYNC / etc) · Issue #208 · WICG/proposals

Introduction Browsers generally don't support Variable Refresh Rate (VRR). Terms: FreeSync, G-SYNC, HDMI VRR, VESA Adaptive-Sync, Apple ProMotion, etc. User Benefits of Variable Refresh Rate (VRR) ...

github.com

Founder got surprised for his 51st birthday!

Happy 51st birthday, to founder Mark Rejhon, from the UFO Area 51 Laboratory!