Intel HEX Utility

HEX Merger

Merge IAP, OTA, application, bootloader, and configuration HEX files into one clean Intel HEX file. All processing runs locally in your browser. Nothing is uploaded.

Recommended for IAP + OTA

Use this tool to combine files such as IAP.hex and OTA_APP.hex. The tool parses real Intel HEX addresses, removes the EOF line from earlier files, appends the next HEX file, and keeps the original HEX records unchanged.

1–5 HEX files Overlap check Local only HEX friendly

Drop HEX files

Drag files into slots 1–5, or click a slot to select a file.
0 file(s) loaded

File summary

No HEX files loaded yet.

Merge log

Waiting for files...