head to head · open source
sharp vs thumbnailator
sharp has 32,723 GitHub stars, 1,439 forks, 123 open issues and last shipped yesterday. thumbnailator has 5,432 stars, 791 forks, 55 open issues and last shipped 7 months ago. sharp leads on adoption by 502% (32,723 vs 5,432 stars). sharp is written in JavaScript under Apache-2.0; thumbnailator is written in Java under MIT. sharp has attracted 4% as many forks as stars, thumbnailator 15%. sharp was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (image-processing), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| sharp | thumbnailator | |
|---|---|---|
| GitHub stars | ★ 33K | ★ 5.4K |
| License | Apache-2.0 | MIT |
| Written in | JavaScript | Java |
| Last push | 2026-09-26 | 2026-02-17 |
| Forks | ⑂ 1.4K | ⑂ 791 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick sharp if
- You weight community size — 33K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick thumbnailator if
- You want the thumbnailator feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Java
- You evaluated both and thumbnailator fits your workflow better
About sharp
sharp is a high performance Node.js image processing library that converts large images in common formats into smaller, web friendly JPEG, PNG, WebP, GIF and AVIF files, and it is built for JavaScript developers who need fast, dependency light resizing inside Node.js, Deno or Bun applications.
read the full sharp overview →
About thumbnailator
Thumbnailator is a thumbnail generation library for Java that provides a fluent interface for resizing images and writing thumbnails, and it is aimed at Java developers who want high quality thumbnails without hand writing Image I/O and Java 2D code.
read the full thumbnailator overview →
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Frequently asked questions
Is sharp or thumbnailator more popular?
sharp has 32,723 GitHub stars and thumbnailator has 5,432. sharp has the larger community by that measure.
Are sharp and thumbnailator free?
Both are open source. sharp is licensed under Apache-2.0 and thumbnailator under MIT. Neither carries a licence fee.
What is the difference between sharp and thumbnailator?
sharp is written in JavaScript and thumbnailator in Java. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, sharp or thumbnailator?
Choose sharp if you want the larger community (32,723 stars) or its Apache-2.0 licence terms. Choose thumbnailator if its feature set, stack or MIT licence fits better. Both are self-hostable.