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Vow Photo Editor
Crop, brighten, blur a face, add text, and save to an exact file size
- Free: Every basic edit, 15 saved photos a day, no watermarks
- $9.95 once: No daily limit, one-click face blur, layers, batch edits and presets
Vow 3D Viewer & Converter
3D model viewer & converter for Windows
Open any 3D model. Convert it right. STL, 3MF, OBJ, FBX, GLB and 40 more.
Drop in a model to spin it, cut it open and check its size. Convert it to the format you need, with the right units and the right way up, fix it for printing in one click, and measure it. One window instead of four tools, and nothing is uploaded.
- No ads
- No malware
- No account
- Light & dark theme
- View every format free; Pro tools on 3 models a day
No ads. Ever.No pop-ups, no banners, no "offers".
No malware or bundlewareThe installer installs one thing: this app.
No account, no uploadIt works on your PC, and your files stay there.
Free daily limits, just $9.95 unlimitedNo subscription. No trial that runs out.
The problem
Windows' own 3D apps are gone. Now what?
Microsoft has retired Paint 3D, 3D Builder and 3D Viewer. What's left is uploading your models to websites or learning a full 3D suite.
Microsoft's 3D apps are retired
Paint 3D, 3D Builder and 3D Viewer are gone, and 3D Viewer stopped opening FBX files back in 2024.
Upload your design to convert it
Online converters want your model on their servers first, then make you wait and download it again.
Ads and size limits
Free converter sites cap file sizes, bury the download button under ads and handle one file at a time.
A 3D suite for a 2-minute job
Professional 3D software can do it all, after you've spent an evening learning where everything is.
Wrong size, wrong way up
Conversions that come out a thousand times too big, or lying on their back, because units and up-axes differ.
Prints that fail
Holes, flipped faces and broken triangles you can't see until the slicer refuses the file or the print goes wrong.
Vow 3D Viewer & Converter fixes all of it.
How it works
Open. Check. Convert.
See the model, its true size and its print problems the moment it opens, then save it in the format you need.
- 01
Open a model
Drag it onto the window, press Ctrl+O or use Open with in Explorer. Zip files holding an OBJ with its materials and textures open directly.
Drop a 3D model on the window or click to open it - 02
Look and check
Spin, pan and zoom, switch to clay, wireframe or X-ray, cut it open with the section tool, and see its size and print check at a glance.
...and the Open, Look and Convert steps with the feature list - 03
Convert and save
Pick STL, 3MF, OBJ, GLB, FBX, PLY or one of the other formats and press Save. Units and the up-axis are handled for you.
Turn many 3D models into another format in one go
Features
Four tools' worth of jobs in one simple window
For 3D printing hobbyists, makers, game and web creators, and anyone who just needs to open a model.
40+ formats in
STL, 3MF, OBJ, FBX, GLB and glTF, PLY, Collada, 3DS, OFF, Blender, LightWave and more, plus zip files with textures inside.
13 formats out
STL, 3MF, OBJ, GLB, FBX and PLY, plus glTF, Collada, OFF, 3DS, DirectX, X3D and STEP mesh, in binary or ASCII.
Right size, right way up
Models are scaled to the unit each format expects and kept upright between graphics and print formats. The saved size is shown first.
Repair for printing
The print check finds holes, open edges, flipped faces and inside-out shells, shows them in the view, and fixes them in one click.
Measure and estimate
Distance and angle tools that snap to corners, plus print weight, filament length and cost for 11 materials.
A proper viewer
Solid, clay, edges, wireframe, X-ray and normals, eight view presets, an orthographic view and a section that cuts the model open.
Parts and quick edits
Show, hide and pick parts, scale by percent or to an exact size, convert inches to mm, turn, mirror and merge, with undo.
Batch conversion
Drop a folder of models and convert them all. Originals are never changed and existing files are never overwritten.
Fast with big meshes
Typical models open in a fraction of a second, and Simplify reduces heavy meshes to a percentage of their triangles.
Private by design
Everything runs on your PC. Your models are never uploaded, there are no file size limits, and it works with no internet.
Light & dark theme
Easy on the eyes, day or night.
3D Viewer & Converter comes with a crisp light theme and a calm dark theme. Switch with one click, or let it follow your Windows setting by itself. It remembers your choice.
- LightClear and bright for daytime and busy offices
- DarkGentle on tired eyes late at night
- Follow WindowsChanges by itself when your PC does
Screenshots
See Vow 3D Viewer & Converter in action
Real screenshots of the real app, in both of its themes: 5 light, 5 dark. Click any picture to see it full size.
Light theme
Dark theme
Who it's for
Made for everyone who works with 3D files
3D printing
Check and repair an STL or 3MF before slicing, and estimate its weight and filament cost.
Game and asset creators
Turn FBX, OBJ and Collada models into GLB or FBX for Unity, Unreal or the web.
Makers and designers
Measure parts, convert inches to millimetres and scale a model to an exact size.
Web and AR
Save models as GLB, the compact glTF format used for the web, AR and games.
Students and teachers
Open any model a class hands out, without installing a full 3D suite.
Missing 3D Viewer
Get back an easy way to open 3D files on Windows, and then some.
Compare
Vow 3D Viewer & Converter vs the usual options
What you get from online converters and typical 3D tools, side by side.
| Feature | Vow 3D Viewer & Converter | Online converters & typical 3D tools |
|---|---|---|
| Price | Free to view, or $9.95 once | Ads, credits or subscriptions |
| Your models are uploaded | Never: 100% on your PC | Online converters: always |
| File size limits | None | Common on online converters |
| FBX in and out | Yes | Missing from some viewers |
| Units and up-axis on conversion | Handled, size shown before saving | Often wrong scale or orientation |
| Print check with problems shown | Yes, with one-click repair | Usually a separate tool |
| Print weight and cost estimate | Yes, 11 materials | Rare in viewers |
| Batch conversion | Whole folders | Often one file at a time |
| Easy to learn | Viewer, converter and repair in one window | Pro tools take time to learn |
"Typical" describes what we found across the most-downloaded alternatives when we built 3D Viewer & Converter. Your mileage with any one of them may vary; ours won't.
Pricing
Free every day. Just $9.95 once for the lot.
That is not a typo. Software this powerful usually means a monthly subscription; 3D Viewer & Converter is $9.95, once, for life: it's almost a giveaway. Use it free for as long as you like, and unlock Unlimited only if you need more.
Free
$0forever
View every format free; Pro tools on 3 models a day.
- Open and view 40+ formats, any size
- Shading modes, section view, X-ray and parts
- Size, volume, area and the print check
- Pro tools on 3 models a day (resets at midnight)
- Screenshots at 2x and a recent-models list
- No watermarks, no sign-up, nothing uploaded
Best valueUnlimited
$9.95USD, once. Yours for life.
Almost a giveaway. Less than a takeaway lunch for software this powerful: no subscription, no renewals, yours for life on 2 PCs.
Convert, measure, repair and edit any number of models.
- Convert and export any number of models
- Measure, repair and simplify with no daily limit
- Scale, change units, turn, mirror and merge
- Batch-convert whole folders in one go
- One payment, yours for life on 2 PCs
- Every future update included
How unlocking works
- 1Use it free first Install Vow 3D Viewer & Converter and use it on your own files. No card, no account, no time limit.
- 2Click "Unlimited" in the app Pay $9.95 USD once by card, securely through Stripe in your browser.
- 3It unlocks itself Within seconds, for life, on up to 2 of your PCs. Your license key is emailed to you, and every future update is included.
Payments by Stripe: we never see or store your card. Questions? Ask a real person.
Clean software
Safe to install. Nothing else comes with it.
Most "free" Windows downloads pay for themselves with ads, bundled extras or your data. Vow 3D Viewer & Converter doesn't need to: it's paid for honestly, once, by the people who find it useful.
Download 3D Viewer & Converter free- No ads, toolbars or "offers"The installer installs one thing: Vow 3D Viewer & Converter. No pre-ticked boxes to watch out for.
- No administrator rights neededIt installs just for you, in your own user folder, and leaves the rest of Windows alone.
- Nothing running in the backgroundNo startup programs, no tray nags, no services. When you close it, it's closed.
- Everything includedAll it needs is inside the installer, so you never have to fetch a "required component" from somewhere else.
- Uninstalls cleanlyOne click in Windows Settings > Apps. Your own files are never touched.
- A real company behind itMade, published and supported by XTO Pty Ltd, an Australian company, with real people answering every message.
Step-by-step guide
How to view and convert a 3D model on Windows
From an unknown file to a print-ready STL or 3MF, or a GLB for the web, in a couple of minutes.
Step 1: get it freeDownload and install it free
Get Vow 3D Viewer & Converter from this page and run the installer. It needs no administrator rights and no account, and can optionally add itself to Explorer's Open with list for 3D files.
Open your model
Drag the file onto the window or press Ctrl+O. It opens with its size in the file's unit, millimetres and inches, its triangle count and a print check.
Check it
Spin it with the left mouse button and zoom with the wheel. If the size looks wrong, change the unit in the Info tab; the Repair tab lists anything a slicer would object to.
Pick the format you need
Open the Export tab and click STL or 3MF for printing, GLB for the web, FBX for game engines, or choose another format from the list.
Press Save
Press Save or Ctrl+S. The model is saved to Documents\Vow 3D Viewer & Converter, or next to the original, scaled and turned the way the new format expects.
Technical details
3D Viewer & Converter at a glance
- Works on
- Windows 10 (1809+) and Windows 11, 64-bit
- Opens
- STL, 3MF, OBJ, FBX, GLB/glTF, PLY, DAE, 3DS, OFF and 30+ more
- Saves
- STL, 3MF, OBJ, GLB, glTF, FBX, PLY, DAE, OFF, 3DS, X, X3D, STEP mesh
- Print tools
- Print check, one-click repair, simplify
- Measure
- Distance, angle, weight, filament and cost
- Engines
- Assimp 6, three.js and our own mesh engine
- Internet
- Not needed: works fully offline
- Install
- Per-user, no administrator rights, no account
- Theme
- Light, dark or follow Windows: one click to switch
- Version
- 1.0.0, released 7 November 2026
- Publisher
- XTO Pty Ltd (Australia)
FAQ
Questions about 3D Viewer & Converter
Is Vow 3D Viewer & Converter free?
Yes. Opening and viewing every format, the section view, model info, the print check and screenshots are free forever. The Pro tools (convert and export, measure, repair, simplify and edit) work on 3 models a day for free, and every Pro tool works on the same model all day. Unlimited, a one-time $9.95 USD payment, removes the limit and adds batch conversion of whole folders.
Does it replace Paint 3D, 3D Builder and 3D Viewer?
Yes. It opens the same files and more, including FBX, which Microsoft's 3D Viewer stopped opening in 2024, and adds conversion, measuring and repair for 3D printing in the same window.
Which formats can it open and save?
It opens 40+ formats, including STL, 3MF, OBJ, FBX, GLB and glTF, PLY, Collada, 3DS, OFF, Blender and zip files containing a model. It saves STL, 3MF, OBJ, GLB, glTF, FBX, PLY, Collada, OFF, 3DS, DirectX, X3D and STEP mesh.
Are my models uploaded?
No. Everything runs on your own PC, so there are no upload queues and no file size limits, and it works with no internet connection.
Will my model come out at the right size?
Yes. Each format's unit is taken into account (millimetres for STL, OBJ and PLY, metres for glTF, centimetres for FBX, and 3MF stores its own), models stay upright between graphics and printing formats, and the Export tab shows the saved size before you save. Both can be switched off under Advanced.
Can it fix an STL that won't print?
Usually, yes. The print check finds holes, open and over-shared edges, flipped faces, inside-out shells, broken and duplicate triangles, and Repair for printing fixes them in one click. Repair keeps colours but drops texture coordinates, since it is made for printing.
Are there files it can't handle?
Animations are not played or exported (the model is shown in its rest pose), STEP and IGES CAD files can't be opened, and Draco-compressed glTF and very old ASCII FBX files are not supported.
Is it safe to install?
Yes. It is made and published by XTO Pty Ltd, an Australian company. There are no ads and no bundled software, it needs no administrator rights, it never changes your default apps, and it uninstalls cleanly from Windows Settings.
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Done searching. Get 3D Viewer & Converter.
Open, convert, measure and repair 3D models: STL, 3MF, OBJ, FBX, GLB and 40 more. Free to use every day, $9.95 once if you ever want Unlimited.
- No ads
- No malware
- No account
- No subscription