App profile · UTF-8
Binary UTF-8
Turn every UTF-8 byte into eight bits, including Vietnamese text and emoji.
Hi → 01001000 01101001
Learn Binary UTF-8 encoding
iPhone keyboard · 12 text formats
Encode and decode as you type.
Try 8 converters below. Use all 12 text formats in the app and iPhone keyboard.
- No Full Access
- No account
- App data not collected
- Works offline
Binary UTF-8Base64Base64URLBase32Base16 / HexURL PercentROT13MorseEmojiKaomojiLeetspeakPersonal Code
Pick the right kind of code
12 codecs, clearly classified
Every codec is labelled as a published standard, an app profile, a convention, or an expressive transform — with an honest round-trip contract.
Standard · RFC 4648
Base64
Package UTF-8 bytes with canonical padded Base64.
Hello → SGVsbG8=
Learn Base64 encoding
Standard · RFC 4648
Base64URL
Use the URL-safe - and _ alphabet; the app emits an unpadded profile.
Hello? → SGVsbG8_
Learn Base64URL encoding
Standard · RFC 4648
Base32
Use A–Z and 2–7 with canonical eight-character block padding.
Hi → JBUQ====
Learn Base32 encoding
Standard · RFC 4648
Base16 / Hex
Represent every UTF-8 byte with exactly two hexadecimal digits.
Hi → 4869
Learn Base16 / Hex encoding
Standard · RFC 3986
URL Percent
Keep unreserved characters and write every other byte as uppercase %HH.
Hello world → Hello%20world
Learn URL Percent encoding
Convention
ROT13
Rotate Latin letters by 13 places; run it again to restore the original.
Hello → Uryyb
Learn ROT13 encoding
Standard · ITU
Morse
International Morse; the app profile folds accents, uppercases, and normalizes spaces.
SOS → ... --- ...
Learn Morse encoding
Expressive
Emoji
Add expressive tone with emoji and an adjustable intensity.
love → ❤️
Learn Emoji encoding
Expressive
Kaomoji
Turn the tone of a phrase into playful kaomoji expressions.
Thanks → Thanks (人´∀`)
Learn Kaomoji encoding
Expressive convention
Leetspeak
Swap characters at several levels for a retro-tech texture.
Encode → 3nc0d3
Learn Leetspeak encoding
Shared convention
Personal Code
Create your own phrase rules; the recipient needs the same codebook.
meet at cafe → blue rendezvous
Learn Personal Code encoding
Practical guides
Set it up. Pick a codec. Know its limits.
In-depth guides connect the iPhone keyboard workflow with clear explanations of Morse, Base64, Binary, and security.
iPhone setup
Add Encode Keyboard to iPhone
Add Encode Keyboard in iOS Settings, switch with the globe key, encode or decode the current line, and undo—without enabling Full Access.
Base64 guide
Is Base64 encryption?
Base64 is reversible text encoding, not encryption. Learn how UTF-8 bytes, the RFC 4648 alphabet, padding, and common decode errors work.
Binary & UTF-8
Turn text into UTF-8 Binary
Learn why Vietnamese letters and emoji use multiple UTF-8 bytes, then convert each byte to an 8-bit Binary group and decode it back to text.
One clear conversion flow
Compose in the app. Convert from the keyboard.
Use the main app to choose a direction, codec, and options. In a supported text field, the custom keyboard keeps Codec, Encode/Decode, EN/VI, Convert, and Undo in one compact toolbar.
Custom keyboard
Encode or decode directly in text fields supported by iOS.
Favorites + history
Save and reuse frequent results with less friction.
Learn 12 codecs
Examples, validation rules, primary references, and quizzes explain the result you use.
Encode Keyboard custom keyboard
Codec → Encode/Decode → EN/VI → Convert
In a supported non-secure text field, use the globe key to switch to Encode Keyboard, type your text, then use the compact toolbar above the keys.
Add “Encode Keyboard”
Open iOS Settings → General → Keyboard → Keyboards → Add New Keyboard → Encode Keyboard. Full Access is not required.
Choose the flow
Choose a Codec, Encode or Decode, then EN or VI for the typing language.
Convert or Undo
Convert changes the current line before the cursor; Undo restores the most recent conversion.
Make it personal
Build a language of your own
Personal Codebook lets you replace whole phrases with your own rules, keep them locally, and move them with export and import.
- Create rules for whole phrases
- Export and import a codebook
- Reuse it in the app and keyboard
This is a shared convention, not security. The recipient needs the same codebook to decode it correctly.
Privacy by architecture
Your text does not need to leave your device
The app and keyboard run codecs locally. There are no accounts, ads, analytics, or tracking SDKs.
AaYour text
⌘On-device transform
✓A result you control
No Full Access
The keyboard declares RequestsOpenAccess=false and does not use the network.
Intentional clipboard use
The keyboard cannot read it; the main app only uses it after you tap Paste or Copy.
App data not collected
Content, history, favorites, preferences, and codebooks remain local.
Common questions
Before you download
Does the keyboard need Full Access?
No. Encode Keyboard declares RequestsOpenAccess=false, does not request Full Access, and does not use the network.
Does Encode Keyboard collect what I type?
No. Content in the app and keyboard is processed on device and is not sent to our server. The website host may create standard technical access logs.
Is this secure encryption?
No. Base64, Base64URL, Base32, Hex, URL Percent, Binary, Morse, ROT13, and Personal Code are encodings, profiles, or conventions — not secure cryptography.
Which codecs decode exactly?
Base64, Base64URL, Base32, Hex, URL Percent, Binary, and ROT13 restore valid text under their stated profiles. Morse normalizes accents, case, and spaces. Expressive codecs can be ambiguous; Personal Code requires the same codebook.
Which devices can run Encode Keyboard?
Encode Keyboard supports iPhone and iPad running iOS 18 or later.
Can I move Personal Code to another device?
Yes. You can export the codebook as a file and import it again. Only share that file with people you trust.
Ready to send a signal?
One message. 12 ways to say it.
Download Encode Keyboard free on iPhone and iPad. Requires iOS 18 or later.
