base64, in rust. Contribute to marshallpierce/rust-base64 development by creating an account on GitHub.

Trình chuyển đổi File sang Base64 siêu tốc. Hỗ trợ mã hóa hình ảnh, tài liệu thành Data URI hoặc Base64 thuần.

🏞 Image and Video Picker library for Android that supports Base64 for images and is compatible with both Layouts and Jetpack Compose. - NicosNicolaou16/ImagePickerAndroid

Convert images to Base64 Data URLs instantly in your browser. Copy for CSS, HTML, or API use.

CRG builds and tests the Base64 FPGA Accelerator, exploring its 42.5 MHz 68000, 24 MB RAM, reset bug, MapROM, and Amiga compatibility.

Free browser tool: Base64. Themes: Convert, Text.

Every few months I see Base64 described as "encoding for security." It isn't. Here's what it actually does. ## What Base64 is Base64 turns arbitrary bytes into text made only of safe characters (`A–Z`, `a–z`, `0–9`, `+`, `/`, plus `=` padding). That makes it possible to put binary data in places that only accept text: JSON, URLs, HTML, email. Common uses: * Data URIs: `data:image/png;base64,...` * HTTP Basic auth headers * Parts of JWTs * Embedding small files in JSON APIs ## What it is not **It's not encryption.** There's no key and no secret. Anyone can decode it instantly: atob("c2VjcmV0LXBhc3N3b3Jk"); // "secret-password" If you see credentials "protected" with Base64, they're not protected. ## It makes data bigger Every 3 bytes become 4 characters, so output is about **33% larger**. That's fine for small icons and tokens, but a bad idea for large files. ## The Unicode gotcha `btoa` only handles characters in the Latin-1 range: btoa("héllo"); // works btoa("नमस्ते"); // InvalidCharacterError btoa("😀"); // InvalidCharacterError The fix is to convert text to UTF-8 bytes first: function toBase64(str) { const bytes = new TextEncoder().encode(str); let binary = ""; bytes.forEach(b => (binary += String.fromCharCode(b))); return btoa(binary); } function fromBase64(b64) { const binary = atob(b64); const bytes = Uint8Array.from(binary, c => c.charCodeAt(0)); return new TextDecoder().decode(bytes); } fromBase64(toBase64("नमस्ते 😀")); // "नमस्ते 😀" ## Base64URL: the URL-safe variant Standard Base64 uses `+` and `/`, which have special meaning in URLs. Base64URL swaps them for `-` and `_` and usually drops the `=` padding. JWTs use this variant, so decoding one with plain `atob` can fail until you convert the characters back. const toStandard = s => s.replace(/-/g, "+").replace(/_/g, "/"); ## Quick rules * Use it to move binary data through text-only channels * Don't use it to hide anything * Avoid it for large files * Always go through UTF-8 for non-English text For quick checks while debugging, I use a Base64 encoder/decoder from the free tools on Erapse, a site I run. For anything sensitive, decode locally instead. What's the strangest place you've found Base64 in the wild?

PageSift（LLM パイプライン向けの Rust 製 Web コンテンツエンジン）を開発する中で、Base64 はブラウザスクリーンショット、MCP の画像リソース、プロキシ認証といった、スループットとメモリ確保が効く場所に何度も現れました。PageSift 内部で育...

Free, fast, and privacy-first web utilities with no paywalls.

ブラウザで動くだけの地味なツールだけど、たまにいるんだよなこういうの。