See your machine embroidery
designs on Windows

Embroidery Explorer adds support for PES, DST, JEF, EXP, VP3, HUS, VIP, XXX and more than thirty other machine embroidery formats to Windows Explorer, with thumbnails, a live preview pane and file details, plus a dedicated app to view a design, sew it stitch by stitch, check it, print a worksheet and export it. It is a viewer and conversion tool, not a digitizing tool.

πŸͺŸ Windows 10 / 11 🧡 35+ embroidery formats πŸ–ΌοΈ Previews & Thumbnails βœ… Design checks πŸ–¨οΈ Worksheets & templates πŸ’Ύ Export to Image / SVG / PDF 🌐 7 languages
πŸ“‚
Explorer Integration
Design thumbnails, a live preview pane and stitch counts right in File Explorer
🧡
Realistic Threads
Raised, shaded threads, a stitch by stitch simulation, the hoop and a centimeter grid
βœ…
Design Checks
Long and short stitches, dense areas and missing lock stitches, ringed on the design
πŸ–¨οΈ
Print & Export
Worksheets at actual size, pictures, SVG and PDF drawings
Getting Started

Installation

⚠️

Embroidery Explorer is a viewer, not a digitizing tool. It is built to look at designs: thumbnails, previews, properties, checks, worksheets and exports. It does not edit stitches, resize a design with stitch recalculation, or convert it into another machine format. What it shows is what the file contains, so before you stitch on a garment that matters, sew a test piece.

Embroidery Explorer is distributed through the Microsoft Store as a single package that installs both the desktop app and the Windows Explorer shell extensions.

Get Embroidery Explorer

Install once and both the app and the Explorer thumbnails and preview pane are set up automatically.

⬇ Get it from the Microsoft Store
βœ…

No configuration needed. After installation, design thumbnails and the preview pane work automatically in Windows Explorer. Just navigate to a folder that contains embroidery files.

πŸ”„ What gets installed

πŸͺŸ

Embroidery Explorer App

A desktop app for opening, viewing, checking, printing and exporting designs. Accessible from the Start menu.

πŸ”Œ

Shell Extensions

Background components that power thumbnails, the preview pane, and file details in Windows Explorer. They run automatically, no action needed.

Getting Started

The Interface

Embroidery Explorer has a simple left-hand navigation. You can open a design by clicking Open a design…, dragging a file onto the window, or launching it from Windows Explorer.

🏠
Home
Welcome screen and quick start
🧡
Design
The view, its toolbar, the threads, the checks and the sewing simulation
πŸ’Ύ
Export
Save the design as pictures, SVG or PDF
πŸ–¨οΈ
Print
Worksheets and templates, with a live preview
πŸ•˜
Recent files
Designs opened recently, newest first
βš™οΈ
Settings
Appearance, language, drawing, hoops, checks, Explorer integration, About

πŸ“‚ Opening a design

  1. From Windows Explorer. Double-click a design, or right-click it and choose Open with Embroidery Explorer. From the preview pane, the right-click menu has Open with Embroidery Explorer.
  2. From the app. Click Open a design… on the Home page, or Open another design… on the Design page, or press Ctrl+O anywhere.
  3. Drag and drop. Drop a file anywhere on the window.
  4. From Recent files. Pick a design you opened before.

πŸ—œοΈ Designs bought as a zip

Design shops usually sell one design as a .zip that holds the same design in a dozen machine formats. Open the zip itself: the app lists every design it holds in a Design in this zip box and opens the first one it reads, preferring the richer formats. Pick another entry to see the version your machine will read.

Features

Windows Explorer Integration

Once Embroidery Explorer is installed, Windows Explorer gains thumbnails, a live preview pane, and file details for embroidery files, no extra steps required.

πŸ—‚οΈ

Thumbnails

Design files show the actual stitched design as a thumbnail in Explorer's icon view, drawn in the drawing style you chose, so you can recognise a design without opening it.

πŸ‘οΈ

Preview Pane

Select a design and press Alt+P (or View β†’ Preview Pane) to see a live, zoomable preview inside Explorer, with the design's size, stitch count and colors under it.

πŸ“‹

File Details

The Explorer Details pane shows facts read from the file: the size in millimeters, the stitches and colors, the smallest of your hoops it fits, the name, author and software the format carries.

πŸ“Š

Details Columns

With Better Shell Integration installed, a folder in Details view can show Stitches, Colors, Width, Height, Hoop, Thread, Sewing time and Trims columns, so you can sort a whole folder by size or stitch count.

ℹ️

When the trial has ended. Once the free trial is over and the app is not licensed, Windows no longer starts Embroidery Explorer at all. File Explorer then shows the file type's plain icon instead of a thumbnail, the preview pane stays empty, and the details Embroidery Explorer adds are not shown. With Better Shell Integration installed you see a small Trial expired placeholder and a trial notice in the preview pane instead. Opening a file with the app shows an error, see File system error (-2143322102). Get the app from the Microsoft Store to restore everything. Your files are never changed.

Why a few thumbnails still show. With the trial over you still see real thumbnails here and there, mixed in with the plain icons. Two things produce them. Windows keeps a thumbnail cache of its own, so pictures made while Embroidery Explorer was licensed stay in the folders you have already visited, until that cache is rebuilt. And with Better Shell Integration installed, the first files a fresh Explorer session asks about can still be drawn, because Embroidery Explorer answers Explorer straight away rather than hold it up while the Store confirms the licence, and those few are cached as well. A mix of icons and thumbnails is expected, it does not mean the trial is still running. The leftovers go away on their own as Windows rebuilds its cache.

πŸ’‘

Not seeing thumbnails or previews everywhere? Turn on Better Shell Integration, a one-time, administrator-approved setup that makes them appear for all supported embroidery files, even when your embroidery software is the default.

πŸ‘οΈ Using the preview pane

The Embroidery Explorer preview pane is a compact version of the Design page. Scroll to zoom, drag to pan, and right-click for the rest:

Menu itemWhat it does
Reset viewBack to the fitted view, the whole design centered.
Zoom in / Zoom outThe same steps the wheel takes, for a pointer without one.
Rotate 90Β° clockwiseTurns the design a quarter turn, for a design stored sideways to fit a hoop. The file is not changed, and the next file you select starts upright again.
Realistic threadsSwitches between raised, shaded threads and flat stitch lines.
Show jumpsDraws the moves between stitched parts as dashed lines.
Show hoopDraws the smallest of your hoops the design fits around it.
Copy details for supportCopies what the preview knows about the file, handy for a support request.
Open with Embroidery ExplorerOpens the same design in the full app for checks, printing and export.
Features

Better Shell Integration (administrator required)

Embroidery Explorer can register its handlers with Windows itself. This turns on the design thumbnails, the preview pane, the Explorer file details / properties and the Details columns for all supported embroidery files. Because it changes the machine, Windows asks for administrator approval when you turn it on or off.

ℹ️

This is optional. The Embroidery Explorer app itself works without it. Turn it on when you want thumbnails, previews, details and the Stitches, Colors, Hoop and other columns in File Explorer, even when another app is the default for these files.

βœ…

It works even when another app is your default. If you open designs in your embroidery software and keep it as your default, Embroidery Explorer still supplies the thumbnails, previews and details. Windows uses them as a fall-through when your chosen app doesn't provide its own, and your default app for double-click stays exactly as you set it.

πŸ‘€

For your account, not everyone on the PC. Installing it needs an administrator, but it only works for a Windows account that has Embroidery Explorer installed and licensed. If the app is uninstalled, the thumbnails, previews, and details stop working too, even while the integration is still listed.

πŸ› οΈ Install, update, uninstall

Everything is done from Settings β†’ Shell Integration. The card shows the current status and the matching action button, and each action prompts for administrator approval (a standard Windows UAC dialog).

StatusMeaningButton
Not installedEmbroidery Explorer's handlers are not registered with Windows on this PC.Install
InstalledRegistered on this PC and current.Reinstall / Uninstall
Installed, update availableA newer build ships with this app version than the one registered.Update / Uninstall
⬇️
Install
Click Install and approve the administrator prompt. Thumbnails, previews, details and columns then work in File Explorer, even when another app is the default.
πŸ”„
Update
When the app updates and ships a newer build, the status shows update available. Click Update to refresh the registered copy.
♻️
Reinstall
If thumbnails or previews stop appearing, Reinstall writes the registration again cleanly without changing the version.
πŸ—‘οΈ
Uninstall
Click Uninstall (also administrator-approved) to remove it. Some changes complete after your next sign-in.
ℹ️

Listed in Windows. It also appears in Settings β†’ Apps β†’ Installed apps as "Embroidery Explorer Preview Shell Integration", and can be removed there at any time, independently of the Embroidery Explorer app.

⏳

Give it a minute. After you install it, thumbnails can take a while to appear. Windows caches how it resolves thumbnail handlers, separately from the picture cache, so a folder may show the old icons for a bit. Wait a little, or run Reset Thumbnails (see Settings) and press F5.

βš™οΈ Why it needs administrator, and why updates are separate

Windows resolves thumbnail and preview handlers, and the descriptions of the Details columns, from a location that only an administrator can write. That is why this integration asks for approval. It's copied to a stable folder outside the app package, so it keeps working across app updates. Because it lives outside the app package it doesn't update itself, so a newer app version flags update available and one click refreshes it.

Features

Viewing Designs

The Design page shows the open design with a toolbar above it and the design's facts beside it: its size in millimeters and inches, its stitches, colors and trims, its thread length and sewing time, and the smallest of your hoops it fits.

πŸ–±οΈ Zoom & pan

Scroll to zoom around the pointer, drag to pan. The Zoom box shows the current zoom and takes a value of its own, 100 % being the whole design fitted to the view. The Fit button (Ctrl+0) brings the whole design back.

🧰 The toolbar

ButtonWhat it does
RotateTurns the design a quarter turn clockwise (Ctrl+R), for a design stored sideways to fit a hoop. Exports follow the view, the file itself is not changed, and the next design opens upright.
RealisticRaised, shaded threads, or flat stitch lines. Remembered, and shared with the thumbnails and the preview pane.
JumpsDraws the moves between stitched parts as dashed lines. See below.
HoopDraws the smallest of your hoops the design fits, centered on it.
GridA centimeter grid under the design, a stronger line every five centimeters (Ctrl+Shift+G). It covers the whole view at any zoom.
BackgroundThe fabric the design is drawn on, a color picker with a Default color button. The same color is used by the Explorer preview pane.
β“˜ PropertiesEverything the file says about itself, the format, name, author, software and so on (Alt+Enter).

✨ Realistic threads

The realistic style draws each stitch as a raised thread. From afar a thread gets its shadow, a darker body and a highlight along its crown, which is what makes satin columns and fills read as sewn. Zoom in and each stitch is drawn on its own: a round thread with its twist, darker at both ends where it dives into the fabric, each stitch lying over the ones sewn before it. At very small sizes the shading fades out gently so the colors stay true.

πŸ”— Jumps and connections

A jump moves the frame without the needle going down, to reach the next part of the design. With Jumps off the design shows only what is sewn. With it on, every move appears as a dashed line, whether the file stores it as a jump, a trim and a jump, or a long move code, so the same design looks the same whatever format it comes in.

ℹ️

Placeholder colors. Some formats, DST and EXP among them, store where the stitches go but not what thread they use. Embroidery Explorer then shows each color block in a distinct placeholder color, and a bar over the view says so. If the design comes with an Embird .edr color file beside it, its colors are used instead, see Supported Formats.

Features

Threads & Simulation

Beside the design, two tabs switch between the Threads in sewing order and the Checks. The sewing simulation sits under both.

🎨 Threads, in sewing order

Each color block is listed in the order the machine sews it, with its number, its color, the thread's brand, catalog number and name when the format carries them, and its stitch count. Select a thread and every other color fades, so you can see exactly what that thread sews. Hover the swatch for the color's hex code.

▢️ Sewing simulation

Press Play and the design sews itself in about twenty seconds, whatever its size. Drag the slider to go straight to any stitch, the counter under it says which one. It is the quickest way to see the order a design is built in, and where a color is interrupted by another.

Features

Design Checks

The Checks tab runs the checks a digitizer runs before sewing, and rings each place it found on the design in the check's color. Select a line to ring only its places, Ctrl+click it again to see them all.

CheckWhat it flagsDefault
β—― Long stitchesStitches long enough to snag or lie loose on the fabric, and the longest one.over 7 mm
β—― Short stitchesStitches so short the needle sews into its own hole and can break the thread.under 0.3 mm
β—― Dense areasAreas covered by more layers of thread than the fabric takes without puckering, and the most layers found. Measured on a 2 mm grid, from the thread each stitch lays.over 3 layers
β—― Missing tie-insThread starts without the small back and forth stitches that lock the thread.2 of the first 4 stitches at 1.2 mm or less
β—― Missing tie-offsThread ends without lock stitches.2 of the last 4 stitches at 1.2 mm or less
β—― TravelsThe moves between sewn parts, for information, a design is not wrong for having them. Only ringed when you select the line.3 mm or more
ℹ️

Guidelines, not rules. None of these thresholds is a standard. They are the usual digitizing advice, and what is right depends on your machine, your needle, your thread and your fabric. Every threshold is yours to change in Settings β†’ Design checks.

βœ…

The same answer in every format. The checks read the thread the machine lays, not the way a format encodes it. A move is a move whether it is stored as jumps, a trim and a jump, or a long code, and trims are not counted, since half the formats cannot store one. So the PES, DST, JEF and VP3 of the same design give the same findings, as far as the files hold the same stitches.

The checks can also be added to exports and printed worksheets, as rings on the design and a list of what was found, see Exporting and Printing.

Features

Exporting

The Export page saves the open design as pictures in any format Windows can write, or as SVG or PDF drawings, one file per size.

πŸ–ΌοΈ

Images

PNG, JPEG and every other encoder your Windows has, at any pixel size, with an optional transparent background.

πŸ“„

SVG & PDF

Real vector drawings, one line per run of stitches in its thread's color, which open at the size the design is sewn when no size is asked. The PDF is written directly, not through a printer driver.

β˜‘οΈ What the export draws

OptionWhat it does
Realistic threadsRaised threads in pictures, flat stitch lines when off. SVG and PDF drawings are always flat.
JumpsThe moves between parts as dashed lines.
HoopThe smallest of your hoops the design fits, around it.
WorksheetWrites the page the Print page makes, with the facts of the design and its thread list, instead of the design alone. A picture is the first page, a PDF every page. Not for SVG.
ChecksRings the places the checks found, and lists what they found under the design, or after the worksheet's thread list.
Include the title, author and dateWrites the metadata SVG and PDF support, naming Embroidery Explorer as the producer.

The export follows the Design page's rotation, so a design you turned upright is saved upright.

πŸ“ Sizes and file names

Each size is the longest side of the output, in pixels for a picture, or in points for a PDF drawing. For a worksheet it is how many pixels its pages are drawn with. Add as many sizes as you need, each one becomes a file. The file name template must contain {size}, see File Name Tokens.

ℹ️

Overwriting is on by default. A size that fails does not stop the others, and a message says which one and why. Open folder takes you to the results.

Features

Printing

The Print page prints the design with its thread list as a worksheet, or the design alone. At actual size the page doubles as a template to place the design on the fabric. A live preview on the right shows the pages as they will print, and Print… (or Ctrl+P from any page) opens the Windows print dialog.

OptionWhat it does
WorksheetThe design with its facts and its thread list, or the design alone.
Actual sizePrints the design at the size it is sewn when the paper holds it. A note under the design says when it had to be scaled down to fit.
RotationHow the design is turned on the page, apart from how the Design page shows it, so a wide design can lie across a portrait sheet.
MarginsNarrow, 6 mm (1/4 in), Normal, 13 mm (1/2 in), or Wide, 25 mm (1 in). Kept even on a printer that could print to the edge of the sheet.
Hoop outlineDraws the smallest of your hoops the design fits around it.
ChecksRings the places the checks found, and lists what they found after the thread list.
Center marksCrosshairs through the design center, to line it up with the hoop's own marks.
πŸ’‘

Printing a template. Turn on Actual size and Center marks, and set the printer's scaling to 100 % or Actual size in the print dialog. Cut the design out of the sheet and lay it on the garment to see where and how big it will sew.

ℹ️

The preview is laid out on the paper your region uses, A4 or Letter. The print dialog lays the pages out again on the paper you choose there. To make a PDF, use the Export page, whose PDF keeps the vector drawing, rather than printing to a PDF printer.

Features

Recent Files

The Recent files page keeps a list of the designs you have opened before, so you can jump back to one quickly.

ActionDescription
Click a file linkOpens that design on the Design page.
Clear recent filesRemoves every entry from the history. You are asked to confirm when the list is not empty.
Remove missing filesScans the list and drops the entries whose file has been deleted or moved.
ℹ️

The list holds up to 100 entries. You can turn the history off entirely in Settings if you would rather nothing was tracked.

Features

Settings

The Settings page groups the app's options. Choices you make in context, zoom, background, the toolbar toggles, the export and print options, are remembered on their own.

Appearance

SettingDescription
Application themeFollow the system, or pick light or dark.
LanguageThe language of the app, see Language.
Remember recent filesKeep a list of the designs opened recently, or turn it off.

Designs

SettingDescription
Drawing styleRealistic threads or flat stitch lines, for the thumbnails, the preview pane, the app and every export.
Thread widthHow wide a thread is drawn, in millimeters. A 40 weight thread lies about 0.4 mm wide on the fabric. It also sets how much fabric each stitch covers for the dense areas check.
Your hoopsThe hoops you own, from 50 x 50 mm to 10 x 16 in (260 x 400 mm). A design is said to fit the smallest of them it fits, in Explorer, in the preview pane, in the app and on the worksheet. 4 x 4, 5 x 7 and 6 x 10 are ticked at first.
Sewing timeWhat the sewing time estimate assumes: your machine's speed in stitches per minute (650 at first) and how long a thread change takes you (30 seconds at first).
Design checksThe thresholds of the checks: long stitches, short stitches, dense areas, the move that starts a new thread, and how short a stitch must be to count as a lock stitch. Reset puts the defaults back.

Windows Explorer

SettingDescription
Preview background colorThe fabric behind the design in the Explorer preview pane and in the app. Automatic means the host decides.
Thumbnails backgroundTransparent by default, so Explorer draws the design over the folder view, or a fixed color that can stand for your fabric.
Shell IntegrationInstalls, updates or removes the registration. See Better Shell Integration.
Reset Explorer thumbnailsForces Windows Explorer to rebuild its thumbnail cache so a color or a setting change takes effect.
Reading limitsThe largest file read, in megabytes, and how many designs of a zip are listed. A file past a limit shows no preview and says why. Reset puts the defaults back.
About

The About section shows the app version and a link to detailed System Information, useful when reporting an issue.

Features

Language

Embroidery Explorer speaks English, German, French, Spanish, Italian, Dutch and Brazilian Portuguese.

The app follows the Windows display language by default. Settings β†’ Language picks another one for the app alone, and the pages switch at once, no restart needed.

πŸͺŸ

In File Explorer, the language is the Windows display language. The thumbnails, the preview pane, its right-click menu, the file details and the Details column names are drawn by Windows' own processes on behalf of every app, so they always follow the display language of your Windows account, whatever the app is set to. To change them, change the Windows display language in Settings β†’ Time & language β†’ Language & region. A language Embroidery Explorer does not speak falls back to English.

Reference

Supported Formats

Input, what Embroidery Explorer reads

Every format is recognised by its content as well as its extension, so a design renamed to the wrong extension still opens, and a file that only has an embroidery extension is refused with a clear message.

Machine familyFormats
Brother, Baby Lock, Bernina deco.pes, .pec, .phb, .phc
Tajima.dst, .tbf
Janome, Elna.jef, .jef+, .sew, .jpx
Husqvarna Viking.hus, .shv, .vp3
Pfaff.vip, .vp4, .pcs, .pcd, .pcq, .pcm, .ksm, .max*
Melco, Bernina.exp
Singer.xxx
Barudan.dsb, .u01
ZSK.dsz, .zxy
Toyota.10o, .100
Others.emd Elna, .exy Eltac, .gt Gold Thread, .stc Gunold, .inb Inbro, .mit Mitsubishi, .stx Data Stitch, .zhs Zeng Hsing, .bro Bits and Volts, .new* Ameco
ℹ️

* Opened, not claimed. .max is also a 3ds Max scene and .new a common generic extension, so Embroidery Explorer opens them in the app but does not register itself for them in File Explorer.

Containers and companions

.zip of designs, as sold
.edr Embird color file
🎨

Colors from an .edr file. A design whose format stores no thread colors, a DST, an EXP and the like, takes its colors from an Embird .edr file named after it and sitting beside it, flower.edr or flower.dst.edr. That works in the app, in the preview pane and inside a zip. A design that names its own threads keeps them.

Export

Raster exports cover the image formats registered on your Windows system. A green dot marks formats that keep transparency, a blue dot marks vector formats.

PNG
JPEG
BMP / TIFF / GIF / WebP…
SVG (vector)
PDF (vector)
Reference

File Name Tokens

The file name template on the Export page is a pattern. Tokens are case-insensitive, and the page shows the names it will write as you type.

TokenBecomesExample
{name}The design's file name, without its extension.flower
{size}The size of this file. Required.1024
{format}The chosen format.PNG
{ext}The file extension, with its dot..png
{date}Today's date.2026-09-19
{time}The current time.14-30-00
{transparency}Transparent or Opaque.Transparent
{user}Your Windows user name.alice
{version}The Embroidery Explorer version.1.0.0
{language}The app's language code.en-US
πŸ’‘

Example template: {name}_{size} writes flower_512.png and flower_2048.png. The {size} token is required, the Export button stays disabled without it.

Reference

Keyboard & Mouse

Keyboard, in the app

Open a design
Ctrl+O
Close the design
Ctrl+W
Print
Ctrl+P
Properties
Alt+Enter
Fit the whole design
Ctrl+0
Rotate 90Β° clockwise
Ctrl+R
Centimeter grid
Ctrl+Shift+G
Zoom in / out
Ctrl+Numpad + / Ctrl+Numpad -

In the design view

Zoom
Scroll
Pan
Drag
Open a design
Drop a file on the window
See every check again
Ctrl+click the selected check

In the Windows Explorer preview pane

Show / hide preview pane
Alt+P
Zoom
Scroll
Pan
Drag
More options
Right-click the design
Reference

Limitations

Embroidery Explorer is a fast, faithful viewer, checker and exporter, not a digitizing or editing tool. Knowing what it focuses on, and where a format or Windows sets the limit, helps set expectations.

πŸ› οΈ Viewing, checking and exporting only

There is no editing. You cannot move, resize or recolor stitches, and a design cannot be saved to another machine format. Exporting writes pictures and drawings of the design, not stitch files. Embroidery Explorer never modifies your original files.

🚫 Working files are not read

Digitizing software keeps its own editable working files, Wilcom .emb, Bernina .art, Hatch and others. These are proprietary, and some are scrambled on purpose, so Embroidery Explorer does not read them. Every one of those tools exports machine files, and a design shop sells those too: open the PES, DST, JEF, VP3 or whichever your machine reads.

🎨 Colors the file does not store

DST, EXP and several other formats only store where the needle goes and when the thread changes, not which thread. Their colors are placeholders unless an .edr color file sits beside the design. Formats that store a palette index, JEF and PEC for example, name a thread from the machine maker's chart, which is the maker's color, not necessarily the exact thread you will use.

πŸ“ Figures are estimates

The thread length is the length of the stitches, without the thread the fabric takes up. The sewing time comes from your machine speed and color change time in Settings, and your machine's own estimate will differ. Dense areas are measured from the thread width you set. The checks are guidelines, see Design Checks.

πŸ”€ Formats differ in what they store

A design shop's formats are exported one by one from the same working file, and each format stores the design its own way. Some store trims, some don't, some split long moves into several jumps, some write a few extra stitches. Embroidery Explorer reads them so that the same design looks the same and gives the same checks, but when two exports really hold different stitches, the figures differ a little too.

πŸ–ΌοΈ Thumbnails do not see the .edr color file

Windows hands a thumbnail handler only the file's content and name, never the folder it sits in, so a thumbnail cannot look for the .edr beside a design. Thumbnails of DST, EXP and similar designs keep placeholder colors. The preview pane and the app use the .edr.

🌐 The Explorer language is the Windows language

Everything shown inside File Explorer follows the Windows display language, not the app's language setting. See Language.

πŸ₯‡ One thumbnail / preview provider per file type

Windows lets one handler own a file type at a time. If your embroidery software is registered for .pes or .dst, its thumbnails win. Better Shell Integration is the fix, it registers Embroidery Explorer's handlers with Windows as a fall-through.

🚫 Preview stays blank for files downloaded from the internet

Starting with Windows 11 25H2, Microsoft blocks the File Explorer preview pane for files that carry the "Mark of the Web", files downloaded from the internet, or coming from a location Windows considers unsecured. Designs bought online are exactly that. This affects every file type, not just embroidery designs, and it is a Windows security decision: there is nothing Embroidery Explorer can do at its level to override it.

⚠️

How to restore the preview: right-click the file, choose Properties, tick Unblock at the bottom of the General tab, then click OK. Unblock the .zip before you extract it and every design in it is unblocked too. To clear many files at once, PowerShell's Unblock-File cmdlet does the same in bulk.

ℹ️

Microsoft has acknowledged this behaviour. For the full explanation and more ways to re-enable previews, see this Windows Latest article, in particular its "How to unblock previews in File Explorer" chapter.

βœ…

High-DPI & scaling: the view draws at your display's real pixel density, so a design stays crisp on a scaled display (125 %, 150 %, 200 % and beyond), and exports are pixel-exact at the size you choose whatever your screen is doing.

Reference

Tips & Tricks

🧡 Which file of a bundle to use

Open the bundle's .zip and pick each entry in turn: the one your machine reads is the one to sew. Compare the stitch counts and the checks of two formats if you hesitate, a format that stores more, like PES or VP3, also carries the thread colors and names.

↔️ A design that shows sideways

Designs are often stored turned a quarter turn to fit a long hoop. Press Ctrl+R on the Design page, or Rotate 90Β° clockwise in the preview pane's menu. The file is not changed.

πŸ”’ "File system error (-2143322102)" when opening a file

If double-clicking a file, or choosing Open with β†’ Embroidery Explorer, shows a message with the file's path and File system error (-2143322102), your free trial has ended. Windows refuses to start an app whose Store licence is no longer valid, and that number is the Store's licensing error, 0x803F800A, which Windows shows without an explanation. Nothing is wrong with the file.

πŸ›’

Get Embroidery Explorer from the Microsoft Store and the files open again. Until then you can open them with another app, or make another app the default for them in Windows Settings β†’ Apps β†’ Default apps.

πŸ₯‡ Thumbnails or previews don't show (another app is the default)

πŸͺŸ

Windows 10 is the strict case. On Windows 10, whichever app is the default for a type owns its thumbnails and preview outright, so those appear only once you make Embroidery Explorer the default for the type, or install Better Shell Integration.

Windows follows the file type's default app for thumbnails and previews. If your embroidery software handles an extension and is set as default, its thumbnails win. The quickest fix is Better Shell Integration:

  1. Open Embroidery Explorer's Settings β†’ Shell Integration (see Better Shell Integration) and click Install. Approve the administrator prompt.
  2. Embroidery Explorer's thumbnails, preview and details now show for all supported files, regardless of which app is the default.

Prefer not to use Better Shell Integration? You can instead make Embroidery Explorer the default app for an extension in Windows Settings β†’ Apps β†’ Default apps. Either way, run Settings β†’ Reset Thumbnails if old cached thumbnails linger.

πŸ”„ Thumbnails look out of date?

After changing the drawing style, the thread width or the thumbnail background, click Reset Thumbnails in Settings. You can also clear Windows' cache with Disk Cleanup: press Win+R, run cleanmgr, tick Thumbnails, and click OK.

πŸŒ™ Dark mode

Embroidery Explorer follows your Windows theme by default. For a fixed look, choose Light or Dark explicitly in Settings. The grid and the jumps pick a tone that reads on whatever fabric color the design is drawn on.

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Embroidery Explorer, User Guide, Copyright (C) 2026 Aelyo Softworks. All rights reserved.