ImportError: libjpeg.so.8: cannot open shared object file: No such file or directory

How to fix ImportError: libjpeg.so.8: cannot open shared object file: No such file or directory

The system JPEG library Pillow was built against is missing. On Debian/Ubuntu: sudo apt-get install libjpeg-turbo8 (or libjpeg8). Easiest robust fix: reinstall Pillow from a wheel so it bundles its own libs: pip install --force-reinstall --no-cache-dir pillow.

The exact error

ImportError: libjpeg.so.8: cannot open shared object file: No such file or directory

Fix it

1. sudo apt-get install libjpeg-turbo8 (Debian/Ubuntu) or the equivalent libjpeg package. Expected: libjpeg.so.8 exists on the system

2. Or reinstall Pillow as a wheel: pip install --force-reinstall --no-cache-dir pillow. Expected: Pillow bundles its own libs

3. Verify: open a JPEG with PIL and call .load() on it. Expected: image loads, prints ok

When this applies

Pillow import or JPEG open fails on libjpeg.so.8 missing (WSL, Docker, minimal images)

When this does NOT apply

Pillow not installed at all

Versions

Linux, Pillow built from source / minimal envs

Why it happens

Source-built Pillow links the system libjpeg; the runtime image lacks it.

Edge cases

Alpine/musl needs the apk libjpeg-turbo package; prefer musl wheels when available.

Asked about: ImportError: libjpeg.so.8: cannot open shared object file: No such file or directory (web:fast.ai forum libjpeg thread). The verified fix: The system JPEG library Pillow was built against is missing. On Debian/Ubuntu: sudo apt-get install libjpeg-turbo8 (or libjpeg8). Easiest robust fix: reinstall Pillow from a wheel so it bundles its own libs: pip install --force-reinstall --no-cache-dir pillow. Full thread: https://forums.fast.ai/t/solved-importerror-libjpeg-so-8-cannot-open-shared-object-file-on-wsl/8303