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Terser

JavaScript Build Tools

Free planAPILinuxmacOSWebWindows
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5.2#24 of 27Freefree plan
The Terser homepage

Overview

Terser is ranked #24 of 27 in JavaScript build tools on Specifiction. It runs on API, Linux, macOS, Web, Windows. There is a free plan.

Terser plans and pricing

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Terser Free JavaScript minifier toolkit terser.org · 4 Oct 2026

Compared on JavaScript build tools

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Yesterser.org

Facts

Purpose
Terser is an industry-standard JavaScript minifier that shrinks variable names, removes whitespace and comments, and drops unused code.terser.org · 4 Oct 2026
Ways to use
The site says Terser can be used through its command-line interface or Node.js API.terser.org · 4 Oct 2026
Browser use
The API reference says browser loading is supported and exposes a global `Terser` variable with a `.minify` property.terser.org · 4 Oct 2026
Compression and mangling
The API's `minify()` enables compression and mangling by default, and both can be configured or disabled.terser.org · 4 Oct 2026
Multiple input files
The CLI accepts multiple input files and parses them in sequence in the same global scope.terser.org · 4 Oct 2026
Input stream
If no input file is specified, the CLI reads from standard input.terser.org · 4 Oct 2026
Property mangling risk
The CLI documentation warns that property-name mangling can break code and advises using it only when its behavior is understood.terser.org · 4 Oct 2026
Property mangling safeguards
The options documentation says built-in DOM property mangling is disabled by default and is not recommended to enable.terser.org · 4 Oct 2026
Compatibility options
Terser provides options for ECMAScript targets, including an `ecma` setting that defaults to 5 for compression and output formatting.terser.org · 4 Oct 2026
Integrations
The project documentation describes using Terser with Acorn-produced SpiderMonkey AST input and replacing nested `uglify-es` dependencies with a Yarn resolution alias.terser.org · 4 Oct 2026
Support
The site links to Stack Overflow as a community resource, and its issue-reporting guide asks users to provide a minimal reproducible example.terser.org · 4 Oct 2026
Funding
The site invites individual and organizational financial contributions to support the project.terser.org · 4 Oct 2026

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