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View a EWB file online, free

Open and read .EWB files online. View source, logs and text with syntax highlighting, search and line numbers, free.

Drop your .EWB file here

Opens your .EWB file right here.

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Up to 50 MB · 160+ text and code extensions
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What you get for a .EWB file

We don't have a dedicated viewer for this format, so we identify and inspect it instead — honestly, only what can be read from the file.

01

Drop your .EWB file

Choose it or drag it in. It's read right here in your browser.

02

We identify it

We read the magic bytes to tell what the file really is, its MIME type, and whether the name matches the contents.

03

See the details

Any metadata we can extract (dimensions, EXIF/GPS, document author and dates), a hex view, plus readable text and strings found inside.

What is a .EWB file?

Plain text that programs, servers and people write every day.

An .EWB file is an Electronics Workbench Circuit Design File developed by National Instruments. These CAD data files contain electronic circuit designs and schematics. They are typically opened and edited using Multisim or the legacy Electronics Workbench software.

Programs that open .EWB files

Windows
Electronics Workbench 5.12 (legacy), NI Multisim (Emerson)
Web
Multisim Live (online) — EOL September 2026
.EWB format details
Full nameElectronics Workbench Circuit Design File
DeveloperElectronics Workbench Group (acquired by National Instruments 2005; NI acquired by Emerson 2023)
First releasedEarly 1990s (Electronics Workbench v4/v5 era)
CategoryText & Code
MIME typeapplication/octet-stream

Related viewers

Every viewer is free to use.

Frequently asked questions

Is my .EWB file uploaded anywhere?

No. The file is read and highlighted for you.

Why do some characters look wrong (é, ł)?

That usually means the file was saved in one encoding and opened in another. We detect UTF-8, UTF-16 and the Windows-1250/1252 code pages automatically and show which one was used.

Can it handle huge log files?

Yes, up to 50 MB. Only the lines on screen are drawn, so scrolling stays smooth. Syntax colours are switched off for files over 1.5 MB to keep things fast.

How do the log level filters work?

We find levels like ERROR, WARN, INFO and DEBUG on each line. Lines without a level, such as stack traces, stay with the entry above them, so filtering to errors keeps the full trace.

Can I edit the file?

This is a viewer. To change code, download it or copy it into your editor. Converting encodings and line endings is planned.

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