Encoding Binary Files for API Payloads
Base64 enables seamless file transport across REST endpoints, GraphQL queries, and microservice architectures without requiring multipart form-data.
Frequently Asked Questions
How do I encode any file to Base64 online?
Select or drag and drop any file (ZIP, PDF, DOCX, XLSX, images, config files, or binaries) into the upload box. The converter processes the entire binary byte stream in local browser memory and generates a clean Base64 string or Data URI instantly.
Why should I convert binary files to Base64?
Converting files to Base64 allows you to serialize binary data into JSON payloads, embed files in database documents, or send attachments over text-based API webhooks.
Which file formats can I encode to Base64?
You can encode any file: ZIP archives, Word (.docx), Excel (.xlsx), configuration files (.ini, .cfg, .env, .sav), game saves, PDF, binary files, and fonts.
Is there a file size limit for in-browser file encoding?
You can encode files up to 50MB quickly without upload timeouts since conversion executes in your browser's local memory.
Are my confidential files uploaded or saved on a server?
No, 100% private. Your files never leave your computer.
How do I encode a file to Base64 in Python?
In Python, use: 'import base64 with open("file.zip", "rb") as f: encoded = base64.b64encode(f.read()).decode()'.
How much larger is a Base64 string compared to the original file?
Base64 increases the data size by approximately 33% (4 Base64 characters per 3 binary bytes).