esptool
A Python-based, open-source, platform-independent serial utility for flashing, provisioning, and interacting with Espressif SoCs.
Documentation
Visit the documentation or run esptool -h.
Flasher Stub
esptool uploads a small flasher stub program to the chip to improve flashing performance and work around ROM bootloader limitations. The stub is developed in the esp-flasher-stub repository. Prebuilt binaries are bundled with esptool releases.
Contribute
If you're interested in contributing to esptool, please check the contributions guide.
About
esptool was initially created by Fredrik Ahlberg (@themadinventor), and later maintained by Angus Gratton (@projectgus). It is now supported by Espressif Systems. It has also received improvements from many members of the community.
License
This document and the attached source code are released as Free Software under GNU General Public License Version 2 or later. See the accompanying LICENSE file for a copy.
Release files for esptool 5.4.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| esptool-5.4.0.tar.gz | 513.5 kB | Details |
Release files / esptool-5.4.0.tar.gz
| Download URL | esptool-5.4.0.tar.gz |
|---|---|
| Size | 513.5 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
fd756598db0a26c9975fa18511b08687c54bf2ce7322ede80cf1f5117dad1f50
|
|
BLAKE2b-256 checksum How to use checksums |
2c431a2ae2dd8ae97bf1ec9991db097e52626d35b57d242f9687c9314eac5b57
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Sep 2, 2026.
Transparency log
