# Hex Fiend A fast and clever open source hex editor for macOS. Download the latest version from the [releases](https://github.com/ridiculousfish/HexFiend/releases) page.  ## Features - **Insert, delete, rearrange.** Hex Fiend does not limit you to in-place changes like some hex editors. - **Work with huge files.** Hex Fiend can handle as big a file as you’re able to create. It’s been tested on files as large as 118 GB. - **Small footprint.** Hex Fiend does not keep your files in memory. You won’t dread launching or working with Hex Fiend even on low-RAM machines. - **Fast.** Open a huge file, scroll around, copy and paste, all instantly. Find what you’re looking for with fast searching. - **Binary diff.** Hex Fiend can show the differences between files, taking into account insertions or deletions. Simply open two files in Hex Fiend and then use the File > Compare menus. - **Smart saving.** Hex Fiend knows not to waste time overwriting the parts of your files that haven’t changed, and never needs temporary disk space. - **Data inspector.** Interpret data as integer or floating point, signed or unsigned, big or little endian. - **Binary templates.** Visualize the structure of a file through scripting. See [documentation](https://github.com/ridiculousfish/HexFiend/tree/master/templates). - **Embeddable!** It’s really easy to incorporate Hex Fiend’s hex or data views into your app using the Hex Fiend framework. Its permissive BSD-style license won’t burden you. See the [API reference](http://ridiculousfish.com/hexfiend/docs/) for details. Check out the [projects using Hex Fiend](https://github.com/HexFiend/HexFiend/blob/master/docs/ProjectsUsingHexFiend.md).