webtech360-device-demo.hex
See how Firmware works with this ready-made sample. Open it in the viewer or download the original HEX file for your own testing.
Open HEX files online
HEX (Intel HEX) and BIN are the compiled machine-code files flashed onto microcontrollers (PIC, AVR, STM32). The viewer shows Intel HEX as text and .bin as a clean hex dump.
Interactive viewer — This format is parsed and rendered in the browser.
Drop a HEX file to open it
or click to choose — everything stays on your device
Choose file🔒 100% private — files never leave your browser
Sample files for Firmware
Choose an extension below to open a ready-made sample in the viewer or download it for your own testing.
webtech360-bin-sample.bin
See how Firmware works with this ready-made sample. Open it in the viewer or download the original BIN file for your own testing.
You can also edit HEX online — change the content with find & replace, then save it back. Nothing is uploaded. Or turn HEX into an image — snapshot the preview, add arrows or notes, and download a PNG.
What is a HEX file?
HEX (Intel HEX) and BIN are the compiled machine-code files flashed onto microcontrollers (PIC, AVR, STM32). The viewer shows Intel HEX as text and .bin as a clean hex dump. The .HEX extension identifies a Firmware image file, which is served with the application/octet-stream media type. You can open it here instantly — drop the file into the box above and it renders in your browser. Nothing is uploaded.
Besides this free online viewer, you can open Firmware files in desktop apps such as avrdude, STM32CubeProgrammer, a hex editor — but here all you need is a web browser.
Quick facts
| Format | Firmware — Firmware image |
|---|---|
| File extensions | .hex .bin |
| MIME type | application/octet-stream |
| Developer | various |
| Category | Specialised |
| Also opens in | avrdude, STM32CubeProgrammer, a hex editor |
How to open a HEX file online
- Click Choose file above, or drag your HEX file onto the box.
- The right viewer loads automatically and renders your file.
- Read, scroll or page through it. To open a different file, choose Open another file.
100% private — files never leave your browser.
Libraries used to render HEX in the browser
This viewer is built entirely with open-source JavaScript that runs in your browser:
Frequently asked questions
What is a .HEX file?
A .HEX file is a Firmware image, identified by the application/octet-stream media type. You can open and read it instantly in the viewer above without installing anything.
What programs open HEX files?
On the desktop, HEX files typically open in avrdude, STM32CubeProgrammer, a hex editor. Online, this page opens them in any modern browser — nothing to download.
Can I edit a HEX file online?
Yes. Open your file, switch to Edit, change the text with built-in find & replace, then click Save. It all runs in your browser — nothing is uploaded.
How do I convert HEX to an image?
Use Snapshot to capture the HEX preview, optionally add arrows, text or highlights, then download it as a PNG image.
Is it safe to open my HEX file here?
Yes. The file is read and rendered entirely by JavaScript inside your own browser. It is never uploaded to a server, so nothing leaves your device.
Do I need to install anything to view a HEX file?
No. There is nothing to install and no account to create. Open the page, drop your file, and it displays instantly.
Does it work on my phone or iPad?
Yes. The viewer is fully responsive and works in modern mobile and tablet browsers such as Safari and Chrome.
Is there a file size limit?
There is no hard limit, but very large files depend on your device’s memory. Big files are processed in the background so the page stays responsive.