base64io
Decision gist · record as of 2026-08-14
Yes, if you need streaming Base64 encoding/decoding and can work within its constraints (no seek/tell support, must close after write). Low install friction, no dependencies, permissive license, and no known vulnerabilities make it a safe choice. Dormant maintenance is a minor concern only if you require active bug fixes for modern Python versions beyond 3.7.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Must close the stream (or use context manager) after final write to flush internal buffer and write padded result.
- Low install friction with no runtime dependencies beyond the standard library.
- Dormant since late 2018 but repo remains active; last commit January 2025 suggests maintenance monitoring rather than active development.
License · maintenance · safety
Apache License 2.0 (permissive) — Licensed under Apache License 2.0 (permissive), imposing no restrictions on use or distribution in most contexts.
last release 2018-12-10 (2804 days) · last repo commit 2025-01-09 · 42 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 352,576 downloads/mo, #7,313 on PyPI
Alternatives
Verify before relying
from base64io import Base64IO
with open("source_file", "rb") as source, open("encoded_file", "wb") as target:
with Base64IO(target) as encoded_target:
for line in source:
encoded_target.write(line)- Whether the package is actively maintained or only monitored; last commit date does not clarify development intent.
- Performance characteristics on very large files compared to standard library alternatives.
- Compatibility with modern Python versions beyond 3.7 (classifiers list only up to 3.7).
What it is and what it does
base64io provides a streaming wrapper around input/output streams that transparently applies Base64 encoding or decoding as data passes through. Unlike Python's built-in base64 module, which requires complete streams in memory, base64io lets you transform large files or live streams in chunks, holding only a small buffer at any time. It implements the standard io interface with context manager support, making it a drop-in wrapper for file handles or other stream objects.
The package is designed for scenarios where you need to encode or decode Base64 data without materializing the full content in memory—for example, uploading an encoded file to a remote service, or decoding a streamed response. It has no external dependencies and works with the standard library alone, though it does not support seek, tell, fileno, or truncate operations because the encoded and decoded stream positions diverge.
Use it for
- Encode large files to Base64 for transmission or storage without loading them entirely into memory.
- Decode Base64-encoded streams in a pipeline, processing chunks as they arrive.
- Wrap file handles or network streams to transparently apply Base64 transformation during read/write operations.
- Transform data in a loop without buffering the entire result, suitable for memory-constrained environments.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you need streaming Base64 encoding/decoding and can work within its constraints (no seek/tell support, must close after write).
Low install friction, no dependencies, permissive license, and no known vulnerabilities make it a safe choice. Dormant maintenance is a minor concern only if you require active bug fixes for modern Python versions beyond 3.7.
Install
base64io on PyPI
Before you install
Low install friction with no runtime dependencies beyond the standard library. Dormant since late 2018 but repo remains active; last commit January 2025 suggests maintenance monitoring rather than active development.
Must close the stream (or use context manager) after final write to flush internal buffer and write padded result.
License in practice
Licensed under Apache License 2.0 (permissive), imposing no restrictions on use or distribution in most contexts.
Quickstart
from base64io import Base64IO
with open("source_file", "rb") as source, open("encoded_file", "wb") as target:
with Base64IO(target) as encoded_target:
for line in source:
encoded_target.write(line)Verify before relying
- Whether the package is actively maintained or only monitored; last commit date does not clarify development intent.
- Performance characteristics on very large files compared to standard library alternatives.
- Compatibility with modern Python versions beyond 3.7 (classifiers list only up to 3.7).
Package facts
| License | Apache License 2.0 permissive |
| Python support | Not specified |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | None |
| Maintenance | Dormant 2,804 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 352,576 / month, #7,313 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableIntended Audience :: DevelopersLicense :: OSI Approved :: Apache Software LicenseNatural Language :: EnglishProgramming Language :: PythonProgramming Language :: Python :: 2Programming Language :: Python :: 2.6Programming Language :: Python :: 2.7Programming Language :: Python :: 3Programming Language :: Python :: 3.3Programming Language :: Python :: 3.4Programming Language :: Python :: 3.5Programming Language :: Python :: 3.6Programming Language :: Python :: 3.7Programming Language :: Python :: Implementation :: CPython |
Evidence: base64io-1.0.3-py2.py3-none-any.whl
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See also base2048 · jsonseq · py-multibase · unpaddedbase64 · pybase64 · ecoji · python-baseconv · python-subunit · pybase62 · PyByteBuffer