Is this Base64 tool really free?

Yes, completely. No sign-up, no subscription, no limit on size or number of conversions. The tool is free for everyone.

Not at the moment. Flowfiles is designed to stay lightweight and distraction-free.

Free Base64 Encoder Decoder

Q: Is there a file size limit?

There is no artificial limit. The only constraint is your browser's available memory. For very large files (over 50 MB), processing may be slow.

Q: Do I need to create an account?

No. The tool works without any account, email, or password. Open the page and start immediately.

Free · No sign-up · No limits · 100% local · Text and files

This Base64 tool is completely free, requires no account, has no file size limits, and shows no intrusive ads. It supports encoding and decoding of text, files, and images, with Standard, URL-safe, MIME, and PEM variants. Everything runs in your browser.

Need the full tool with every Base64 option?

Open the Base64 tool →

Variant Line wrap Charset Padding (=)

Input

Output

Everything this tool offers, for free

Text → Base64 encoding

Base64 → text decoding

URL-safe variant (JWT)

MIME line wrap (76 chars)

PEM line wrap (64 chars)

Optional padding

UTF-8 and Latin-1

File → Data URI

Data URI → file download

One-click copy

Download as .b64/.txt

Swap input and output

Frequently Asked Questions

Is the tool truly free?

Yes, completely. No sign-up, no subscription, no limit on conversions. All features are available at no cost.

Is there a file size limit?

No artificial limit. The only constraint is your browser's memory. Files up to several dozen MB work fine.

Do I need to create an account?

No. No account, no email, no password. Open the page and use it immediately.

Will the tool stay free?

The intent is to keep this tool free. Flowfiles is a collection of lightweight web tools with no aggressive business model.

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