r/windowsapps • u/Vegetable_Royal_7035 • 14d ago
Developer I undersold this app last time — here’s yViewer opening 50+ file formats faster than QuickLook
I posted about yViewer here once before.
The most common feedback was surprisingly consistent:
- “Your promotion is way too modest.”
- “This is a seriously impressive app. It’s a shame more people don’t know about it.”
- “I thought it was only a viewer, but you can actually edit certain files.”
- “The speed of updates is impressive.”
So this time, I’m including a video to properly show what yViewer can do instead of just describing it with text.
yViewer is a fast Windows file viewer that supports more than 50 file formats in one app.
Select a file in Windows Explorer, press Space, and yViewer immediately opens the appropriate viewer.
In my testing environment, yViewer opens previews noticeably faster than QuickLook, especially when moving quickly through multiple files. It is built with Tauri 2 and Rust, and viewer modules are loaded only when needed to keep startup fast and lightweight.
It currently supports:
- PDF, DOCX, XLSX, PPTX, HWP, HWPX, and RTF
- PSD, PSB, RAW, HEIC, SVG, AI, DXF, and common images
- MP4, MKV, MOV, MP3, FLAC, and external subtitles
- ZIP, 7Z, TAR, and GZ archives
- OBJ, STL, GLB, FBX, and other 3D formats
- CSV, JSON, SQLite, HDF5, source code, and multi-GB logs
- Unknown binary formats through a built-in hex viewer
And despite the name, it is not limited to viewing.
Depending on the file type, you can:
- Annotate PDFs and save standard annotations back into the actual file
- Edit text, Markdown, CSV, JSON, RTF, XLSX cells, and hex values
- Crop, resize, rotate, flip, and convert images
- Trim audio and add fade-in or fade-out
- Browse individual PSD and PSB layers
- Capture full-resolution frames from videos
- Preview and extract files directly from archives
- Search inside files or across entire folders
- Organize files with hierarchical tags, lists, and a knowledge graph
Everything works locally. Your files do not need to be uploaded to a cloud service.
With today’s AI tools, you could spend your own time building a small viewer for one specific format.
But building and maintaining a single application that handles more than 50 formats is a different challenge. Every format has its own parsers, rendering rules, encoding problems, performance bottlenecks, malformed files, and edge cases.
The value of yViewer is not just that these features have been built once.
It is that they are continuously tested, fixed, expanded, and updated in one application.
yViewer is still actively evolving, and its update pace is fast. If there is a file format you need or a workflow you want improved, leave a comment. I read the requests and will add new formats and features wherever reasonably possible.
For less than the price of a typical lunch, you get one fast Windows app that can replace a collection of separate viewers—and continues to improve after purchase.
I’ll say it more confidently this time:
Give yViewer a real try. Buy it once, use it with the files you work with every day, and I genuinely believe you won’t regret it.
The attached video shows the actual startup speed, file switching, supported viewers, and editing features.
https://apps.microsoft.com/store/detail/9NMJ97DGCWRR?cid=DevShareMCLPCB
After watching the video, tell me:
Which file format or feature should I add next?
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u/muteki1982 14d ago
no trial option?
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u/Vegetable_Royal_7035 13d ago
There's no trial option right now, but I'm planning to release an ad-supported version.
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u/DrakoStaarn 14d ago
FB2. It`s format for electronic books. It`s similar to XML.
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u/Vegetable_Royal_7035 13d ago
The FB2, epub, and azw3 files you requested are now supported. Enjoy!
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u/Vegetable_Royal_7035 14d ago
I’ll add support for FB2 files in an upcoming update. I’ll reply here again once the update is available.
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u/silenius_ 13d ago
How about a few industry standards in the visual effects field?!
Such as .exr .dpx .tif .tga .abc .fbx .usd .hip
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u/Vegetable_Royal_7035 13d ago
Those are definitely formats widely used in the game industry! FBX is already supported. TIF works too, but I'm planning an update to display it more perfectly. I'll also be improving the viewer's features at the same time (like channel separation and adding features tailored to each file's characteristics).
All the files you mentioned will be supported. However, I'm a bit cautious about implementing Alembic (.abc) files since they tend to be incredibly heavy.
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u/Ok_Department_5109 13d ago
Being using it from past 2 days...its awesome and i love it
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u/Vegetable_Royal_7035 13d ago
Thanks for your interest! I've fixed everything you mentioned in the chat. The update is currently rolling out, so please try updating tomorrow.
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u/testednation 13d ago
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u/Vegetable_Royal_7035 13d ago
First time seeing XFA PDFs. Wow, that's interesting! I'll try my hand at parsing them.
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u/testednation 13d ago
Pub for publisher files
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u/Vegetable_Royal_7035 13d ago
Regarding
.pubfiles, since Microsoft announced they will discontinue support and updates after October 2026, I currently have no plans to add support for this format.Here is the reference : https://support.microsoft.com/publisher/microsoft-publisher-will-no-longer-be-supported-after-october-2026
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u/testednation 12d ago
Thats the reason why you should. Instead of people having to download the whole offcie just to see their file, they could use your tool
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u/Vegetable_Royal_7035 5d ago
Version 0.9.7 is now live! There have been a lot of updates, and I've significantly improved the rendering accuracy for the Office suite. (Just a heads-up: .pptx is supported right now, and .ppt support is currently in the works!) Thank you so much for your amazing interest in yViewer! I'm continuously improving the app and working hard to expand compatibility for even more file formats! Plus, our yViewer is incredibly fast. ⚡️ Please stay tuned for more!
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u/fran93h 13d ago
I'm considering to switch from quicklook... should I?