TLDR is an IDE plugin that explains code in plain English. Select a piece of code and it returns a summary of what it does, across almost any programming language.
The framing on its own site is the honest one: developers spend a great deal of time reading code rather than writing it, and most of that reading is of code somebody else wrote, often years ago, with no author available to ask. A plain-English summary is not a substitute for understanding, but it dramatically shortens the orientation phase – working out roughly what a function is for before deciding whether to read it properly.
Living inside the IDE is the right call, since a tool requiring you to paste code into a browser gets used twice and then forgotten. Treat the summaries as orientation rather than authority: an explanation can be fluent, plausible and wrong about the one edge case that matters, and sending proprietary code to any external service needs checking against your employer’s policy first.
Key features
Plain-English explanations of selected code
Runs inside the IDE rather than a browser
Supports almost all programming languages
Quick summaries of unfamiliar functions
Free tier to try
Screenshots & demo
Pricing
TLDR offers a free plan, with paid upgrades for higher limits and more features.
Pricing is provided as a guide. Check the official site for the latest plans.
Is TLDR expensive?
TLDR has no advertised paid tier. Among the 87 priced tools we list in Coding, the median entry price is $19.99 a month.
66% of Coding tools in the directory offer a free tier, and this is one of them.
Compared against every priced listing in Coding, recalculated as the catalogue changes. Method and the full market breakdown are in our AI tool pricing study.
Pros & cons
Pros
Shortens the orientation phase when reading unfamiliar code
In-IDE placement means it actually gets used
Broad language support rather than one ecosystem
Cons
Explanations can be fluent, plausible and wrong about the edge case that matters
Orientation aid, not a substitute for reading the code
Check your employer's policy before sending proprietary code to any service
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