Animated GIF Gallery Viewer by ReactorcoreView all by ReactorcoreReactorcore<br>Follow ReactorcoreFollowFollowing ReactorcoreFollowing<br>Add To CollectionCollection<br>Comments<br>Devlog<br>More like thisRelated<br>Animated GIF Gallery Viewer

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Download Now<br>Animated GIF Gallery Viewer

About

I got fed up with Windows 11 in 2026 still not having a good way to view a folder of animated GIFs all at once.

Usually thumbnails are static, viewers show one file at a time, and finding a specific GIF in a folder of hundreds means clicking through them all - the situation is just dumb.

So I made this: Animated GIF Gallery Viewer is a free, private, browser-based tool that opens a folder of animated GIFs and plays every one of them at once in a scrollable grid - with the ability to view individual gifs in fullscreen view with true frame-by-frame pausing/scrubbing and up to 20× zoom.

I'd say its the best GIF viewer there is in 2026.

Features

Everything animates at once — the whole folder plays together, no<br>clicking through files

Built for big folders — thousands of GIFs stay smooth, because only<br>what's on screen is decoded

True pause — freeze any GIF exactly where it is, then step through it<br>one frame at a time

Zoom and fullscreen — click to zoom, scroll to scale 1–20×, or let a<br>single GIF fill your whole display

Transparency backdrops — swap the colour behind your GIFs to check<br>transparent edges

Find things fast — filter by filename, sort by name, size or date,<br>shuffle, and star favorites

Completely private — files never leave your machine; no server, no<br>upload, no account, no telemetry

Runs anywhere — a folder of static files that works online or straight<br>off your disk

Available Versions

You can use the fully featured online version here on this itch page - that one is free, unlimited and identical to the offline version.

If you want to download the offline version in case you go somewhere with no internet or itch.io spontaneously combusts in the grimdark future of tomorrow, that'll be 3 bucks thank you.

For using the offline version, simply download, unzip and double-click index.html.

Works via your browser, be it Chrome, Brave, Firefox or something else - Windows, Mac, Linux are all good.

Contact

mailto:reactorcoregames@gmail.com

Check out everything else I do: ✨🚀

https://linktr.ee/reactorcore

https://reactorcore.itch.io/

-Reactorcore

More information<br>Updated 8 minutes agoPublished 11 days agoStatusReleasedCategoryToolPlatformsHTML5, Windows, macOS, Linux, AndroidAuthorReactorcoreTagsAnimation, browser, gallery, gamedev, gif, Pixel Art, spritesheet, tool, utility, viewerAI DisclosureAI Assisted, Code

Download<br>Download NowName your own price

Click download now to get access to the following files:<br>animated-gif-gallery-viewer - Offline Version.zip 2 MB<br>if you pay $3 USD or more

Development log<br>Update — grid loading fixes for Chrome & Firefox 3 days ago

Released 1.0 - The Best GIF Viewer Ever Made! 11 days ago

Comments<br>Log in with itch.io to leave a comment.

k0nnects5 days ago<br>Hi! I stumbled across this tool while looking for a way to see all GIFs I have at once and I tried the online version and i noticed it gets super laggy when i want to see all the gifs move at the same time. I was wondering if getting the offline version would be more optimized for viewing a large amount of GIFS (70+) at a time with little to no lag. Thank you!

Reply

Reactorcore4 days ago (1 edit) (+1)<br>Just now I checked on my computer and there is no lag with a 4.21GB folder with 1393 GIFs I loaded:<br>(Right-click open image in a new tab to see it fully)

What computer are you using, what web browser and what operating system?

For reference, I'm using an ASUS A15 Tuf Gaming Laptop (mid-range consumer PC specs), on Firefox, Windows 11.

The offline and online versions are identical, so the performance issues might be due to your computer.

Reply

k0nnects4 days ago<br>Yeah i reckon it's my PC too. I have a Ryzen 5600 G and 1660 ti with 32gb of ram. I use google chrome to run the gif viewer on windows 11. trying it on Firefox does make it less stuttery/laggy tho but this might be a hardware issue it seems

Reply

Reactorcore4 days ago

Hmm, your specs should be fine, a 5600G with 32GB is plenty, and the GPU isn't really involved here.

Very likely the Chrome/Firefox difference you noticed might be the biggest issue. The app plays each GIF as a normal and lets the browser animate it, and Chrome handles many simultaneous animated GIFs much worse than Firefox does; it's main-thread work, so it's a browser architecture thing rather than a hardware thing.

Two things worth checking in Chrome: make sure hardware acceleration is on (chrome://settings/system), and have a look at chrome://gpu to see whether it's fallen back to software rendering — that would make it much worse than normal.

Also, how big are your GIFs in pixel dimensions? 70 large ones (say 800×600+) is a lot more per-frame work than...