Frontend Frameworks

pretty-bytes

Convert bytes to human-readable strings easily.

Status
Generally available
Last checked
Checked · Oct 10, 2026
License
Open source
Pricing
Free tier · from $0

What it is

Pretty Bytes is a JavaScript library that converts byte values into human-readable string representations. It's useful for developers who need to display file sizes or data usage in a user-friendly format.

Pretty Bytes stands out as a lightweight, easy-to-use library for converting byte values into human-readable strings, making it an ideal choice for developers looking to enhance the user experience with clear and concise size representations.

When it fits — and when it doesn’t

A good fit for

  • Developers who need to display byte values in a human-readable format within web applications or command-line tools.

  • Projects that require consistent formatting of file sizes across different platforms.

Look elsewhere if

  • Applications requiring complex data conversion beyond bytes

  • Use cases where manual formatting is preferred over automated solutions

Known weaknesses

Each one links to the public issue, changelog or docs page it came from, where we have one.

  1. 01

    Limited functionality for complex use cases

    pretty-bytes only converts bytes to human-readable strings and does not support additional formatting options or localization.

  2. 02

    Small community and limited contributions

    The project has a small number of contributors and infrequent updates, which may lead to slower issue resolution and feature development.

  3. 03

    No support for binary prefixes (KiB, MiB, GiB)

    pretty-bytes uses decimal units (kB, MB, GB) by default, which can be misleading in contexts where binary prefixes are more appropriate.

  4. 04

    Lack of comprehensive documentation and examples

    The project's documentation is minimal and lacks detailed usage scenarios or advanced configuration options.

What it does well

  • Converts bytes to human-readable strings

  • Supports various units (kB, MB, GB)

  • Easy to integrate into JavaScript projects

Pricing

Free tier
YesOpen source — free to use
Paid from
$0
Model
Flat rate
Enterprise plan
No

Pricing not independently confirmed — check the vendor’s page.

Performance benchmarks

How Fast Is It?

Set up pretty-bytes

Setup steps, common gotchas and what to check after 30 days.

Open the setup guide →
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