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.
- 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.
- 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.
- 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.
- 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.
Get the badge
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Markdown
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