head to head · open source
rembg vs postprocessing
rembg has 24,966 GitHub stars, 2,428 forks, 3 open issues and last shipped 15 days ago. postprocessing has 2,874 stars, 251 forks, 30 open issues and last shipped yesterday. rembg leads on adoption by 769% (24,966 vs 2,874 stars). rembg is written in Python under MIT; postprocessing is written in JavaScript under Zlib. rembg has attracted 10% as many forks as stars, postprocessing 9%. postprocessing 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
| rembg | postprocessing | |
|---|---|---|
| GitHub stars | ★ 25K | ★ 2.9K |
| License | MIT | Zlib |
| Written in | Python | JavaScript |
| Last push | 2026-09-20 | 2026-10-04 |
| Forks | ⑂ 2.4K | ⑂ 251 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick rembg if
- You weight community size — 25K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick postprocessing if
- You want the postprocessing feature set and don't need the biggest community
- You prefer the Zlib license terms
- Your stack matches JavaScript
- You evaluated both and postprocessing fits your workflow better
About rembg
Rembg is an MIT licensed Python tool for removing image backgrounds, usable as a CLI, a Python library, an HTTP server, or a Docker container, and aimed at developers, designers, and automated image pipelines that need background removal without depending on a hosted service.
read the full rembg overview →
About postprocessing
Postprocessing is a JavaScript post processing library for three.js that gives WebGL developers a passes and effects pipeline for applying fullscreen image effects to a rendered scene in real time.
read the full postprocessing overview →
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Frequently asked questions
Is rembg or postprocessing more popular?
rembg has 24,966 GitHub stars and postprocessing has 2,874. rembg has the larger community by that measure.
Are rembg and postprocessing free?
Both are open source. rembg is licensed under MIT and postprocessing under Zlib. Neither carries a licence fee.
What is the difference between rembg and postprocessing?
rembg is written in Python and postprocessing in JavaScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, rembg or postprocessing?
Choose rembg if you want the larger community (24,966 stars) or its MIT licence terms. Choose postprocessing if its feature set, stack or Zlib licence fits better. Both are self-hostable.