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Notes on picking up English vocabulary while reading, and on building Merid on my own.

Toucan vs Merid, written by the person who built one

Use Toucan if you read the web in English and want to learn Spanish, French, Japanese or Korean. Use Merid if you read the web in Vietnamese and want more English vocabulary. They run in opposite directions, so almost nobody genuinely has to choose between them.
- toucan vs merid
August 8, 2026 4 min read

Try Merid on the page you are reading

Merid swaps a few words on the pages you already open for English vocabulary worth knowing. Free, and it runs on your own machine.

Add Merid to Chrome See the demo