Convert text and binary files (images, audio, PDF) to and from Base64, Hexadecimal, UTF-8, and Data URLs. Built-in image preview, byte size calculation, and safe URI formatting.
Decode and inspect RFC 7519 JSON Web Tokens (JWT) client-side in RAM. Live expiration countdown, header/payload JSON formatting, and signature verification with zero server upload.
Compute high-speed SHA-256, SHA-512, SHA-384, SHA-1, and MD5 hashes and HMAC signatures for text or files up to 2GB using the browser's native Web Crypto API with instant checksum verification.
Format, validate, repair, and diff JSON documents with precise line and column error indicators, 2/4-space indentation, minification, tree structure view, and key sorting.
Live regular expression tester with real-time match highlighting, capture group extraction, flags toggling (g, i, m, s, u), pattern breakdown explainer, and multi-language code generator.
Generate CODE128, EAN-13, UPC-A, and CODE39 barcodes with automated Modulo-10 checksum calculation and validation. 100% client-side vector Canvas and PNG download.
Batch-convert CSV or Excel product catalogs (Product Name, SKU/Code, MRP Price) into printable A4 24-up or 40-up retail barcode and QR code sticker sheets with automatic GS1 EAN-13 checksums in local RAM.
RFC 4648 Standard & URL-Safe Base64, Hex Dump Inspector, Image Previews & Safe Client-Side Conversions
Base64 (RFC 4648) represents binary data in an ASCII string format by translating 24 bits (3 bytes) into four 6-bit Base64 digits, resulting in approximately a 33% size increase. URL-Safe Base64 replaces + and / with - and _ so strings can be safely passed in URLs and JWTs. Hexadecimal encoding maps each byte into two 4-bit hexadecimal digits (0-9, a-f).
Data URIs prefix encoded data with MIME types (e.g., data:image/png;base64,...), allowing developers to embed graphics and fonts directly within CSS or HTML. The studio also includes an interactive Hex Dump view showing byte offsets, hex pairs, and printable ASCII characters.
How Base64, Hex & Data URL Binary Studio processes files securely inside your device memory
Every byte of your file is loaded directly into browser ArrayBuffers. Data is processed in volatile sandbox memory and flushed immediately when you close or refresh this tab.
Calculations and image matrix transformations leverage client-side GPU / Canvas2D engines for zero-latency output without server queuing or rate limits.
Generated files strictly follow international ISO specifications (JPEG JFIF, PDF 1.7, Web Crypto API) to guarantee acceptance on all official portals and banking systems.
Quick 3-step guide for instant results
Type or paste raw text, or drop a binary file (PNG, JPG, PDF, WOFF2) into the encoder workspace.
Toggle URL-Safe Base64 (RFC 4648 §5) or inspect the structured byte-offset Hex + ASCII dump.
View visual image previews for decoded media and copy clean formatted strings or Data URLs to your clipboard.
Common questions and verified answers about Base64, Hex & Data URL Binary Studio