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Version: v4.x.x

Custom Logo

Pro Feature

This is an exclusive feature of DASH Pro. Check it out here.


Logo Preview

Your ESP-DASH dashboard's sidebar contains the spot which can be updated to add your own company/product logo. This enables you with complete customization and maintains your brand value among customers.

The logo used in ESP-DASH is image file converted to byte array. We'll go through the process below:

What you'll need​

  • You'll need a compatible logo image ( jpeg / png / gif / tif etc. ) or an SVG file ( recommended due to small file size ). Important: Please make sure your image is optimized and small in file size.
  • Know the MIME file type of your image. You can use HTTPStrip's mime utility.

Step 1: Procedure to convert logo into byte array​

  1. Go to File2Raw Utility ( I created this utility a few years back for the purpose of converting files into byte array for C++ applications ).
  2. Select your logo.
  3. Select "Gzip Compress" & "Use PROGMEM (Arduino)".
  4. Click "Convert".

Step 2: Setting custom logo in sketch​

Now once your custom logo has been prepared, let's set it in your ESP-DASH Pro library:

  1. Go to logo.h
  2. Set DASH_LOGO_MIME to your image file type. To find your file's mime type, use this utility: https://www.htmlstrip.com/mime-file-type-checker
  3. Set DASH_LOGO_WIDTH & DASH_LOGO_HEIGHT according to your desired size which will be displayed on the webpage.
  4. Replace the array length of DASH_LOGO with the newly generated array length.
  5. Now open logo.cpp
  6. Replace the data inside DASH_LOGO with new data generated just before using File2Raw.