Radix64: Base64 Converter
Text, photos & files, offline
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Radix64 turns text, photos, and files into Base64 — and back — entirely on your iPhone, with no upload and no account. It's built for developers who need a data URI for CSS or HTML, anyone decoding a token, or someone who just needs a quick, clean Base64 encode or decode without hunting through a cluttered web tool.
Type or paste on either side and watch the other update instantly — encoding and decoding share one screen, so there's no mode to pick first. Import a photo or file to get its Base64 (or a ready-to-use data: URI), or paste Base64 back in to reconstruct and share the original file.
— WHAT MAKES RADIX64 DIFFERENT —
• One screen, both directions
Type or paste on either side and the other updates instantly — there's no mode to pick first.
• Standard and URL-safe
Switch variants and choose whether to keep padding, so the output matches what you're pasting it into.
• Data URI in one tap
Wrap the result as a data: URI that's ready for CSS, HTML, and email.
• Photos and files, not just text
Import a photo or file to get its Base64, or paste Base64 back in to reconstruct and share the original file.
• Recent history
Your recent conversions stay within reach.
• Nothing leaves your iPhone
Every conversion runs on device, with no upload, no account, and no ads.
— WHO IS RADIX64 FOR? —
• Developers who need a data URI for CSS or HTML
• Anyone decoding a token and checking what's inside
• People who want a quick encode or decode without a cluttered web tool
• Anyone who would rather not paste sensitive data into a website
— PRICING —
Included: live two-way text and Base64 conversion, standard and URL-safe variants with or without padding, one-tap Data URI wrapping, encoding photos and files to Base64 and decoding them back into a file, and recent conversion history.
Radix64 Pro is a one-time in-app purchase — no subscription — and adds batch file and photo conversion plus unlimited, searchable history.
— FEEDBACK —
Made by a small indie team. Email obeliskclubclub@gmail.com with feedback, bug reports, or feature requests.
Learn more: obelisk.club/base64converter
Terms of Use (EULA): https://obelisk.club/base64converter/terms
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
New in 1.1: a Hex output mode, live character and byte counts, one-tap paste, and Shortcuts actions — encode or decode right from Siri and the Shortcuts app. Radix64 Pro now supports Family Sharing. Everything still runs entirely on-device.
The developer, 永 张, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 永 张
- Size
- 897 KB
- Category
- Utilities
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English and Simplified Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Radix64 Pro $4.99
- Copyright
- Copyright © 2026 Peter Zhang. All rights reserved.
