Convert ASCII to ｆｕｌｌｗｉｄｔｈ
Map every ASCII printable character to its fullwidth Unicode twin (U+FF01…U+FF5E) for that ｖａｐｏｒｗａｖｅ aesthetic. Spaces become ideographic spaces. Runs entirely in your browser.
Ａｅｓｔｈｅｔｉｃ ｖｉｂｅｓ ｏｎｌｙ
How to make fullwidth text
Each ASCII codepoint U+0021–U+007E maps to its Unicode fullwidth twin at U+FF01–U+FF5E. Space is replaced with the ideographic space U+3000.
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Paste text
ASCII letters, digits, punctuation — all are mapped.
Inputs are treated as UTF-8 throughout the pipeline and validated client-side as you type — nothing dispatches until the value is well-formed.
inpututf-8client-sidevalidatedinput · textascii · sethello world
loaded · parsedclient-side - 02
Codepoint shift
+0xFEE0 to each printable ASCII codepoint.
Each toggle re-computes through a memoised hook, so flipping options never resets your input and the UI stays snappy on large inputs.
mapoptionslivememoisedtogglesshift · memoised+0xFEE0 · live0x41 → 0xFF21
options set · memoisedlive - 03
See the output
Width-doubled glyphs render the vaporwave look.
Randomness — where used — comes from
crypto.getRandomValues, neverMath.random. Heavy work sits inuseMemo.livecomputeinstantlocaldeterministicout · instantｗｉｄｅ · computedｈｅｌｌｏ ｗｏｒｌｄ
computed · instantinstant - 04
Copy or download
Drop into bios, tweets, or stream titles.
Copy writes through
navigator.clipboardand downloads use aBlob— zero network traffic. Same input plus same options always yield the same bytes.exportcopydownloadzero-networkreproducibleok · copiedready · copiedCopied
shipped · ready to shipsuccess
Pro tips for everyday utilities
Reach for crypto.getRandomValues
Cryptographically random for IDs, tokens, salts. Math.random is for animation and games, not security.
Mock data with seeds
Faker-style libraries can be seeded so tests are reproducible. Embed the seed in the fixture file.
Reference cards beat memory
Cheatsheets for Vim, Git, Docker, Linux signals are faster than man pages when you’re mid-flow.
Browser APIs vary
Touch events, gamepads, and clipboard differ across vendors. Feature-detect before use.
Persist in the right place
localStorage for user preferences, sessionStorage for transient state, IndexedDB for structured data.
Where fullwidth text shines
Aesthetic bios, retro graphics, novelty UI.
Social bios
Stand out on Twitter/X, Bluesky, Discord profiles. Random values come from crypto.getRandomValues — cryptographically secure for tokens, salts, and session IDs. Math.random is deterministic enough for animations but predictable enough to be a security bug.
CSPRNG-backedStreaming titles
Mimic 80s shopping channel aesthetics. Pair with hashids, ULID, or UUID v7 when you need both random and sortable — useful for primary keys, public-facing IDs, and event log ordering without a sequence column.
reproducibleAlbum art / mockups
Use as placeholder type in design mocks. Output is deterministic given the same seed, so fixtures and tests stay reproducible across CI runs and contributor machines. Embed the seed in the fixture file for full replay.
snappyMemes
Caption images with vaporwave Ａｅｓｔｈｅｔｉｃ. Heavy work runs through useMemo so the UI stays snappy on large inputs. Same input + same options yields identical bytes — the kind of stability snapshot tests rely on.
feature-detectedRetro UI
Use in CRT-style themed apps and demos. Storage tools persist to the right backend: localStorage for user preferences, sessionStorage for transient state, IndexedDB for structured data. Pick the right shelf and quota worries disappear.
deterministicCross-script labels
Visually align Latin labels with CJK content. Browser feature detection: clipboard, fullscreen, gamepad, and Web Bluetooth APIs gracefully fall back when unavailable. No surprise white screens on Safari or older Firefox.
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