All-in-one encoding and encryption solution. Supports Base64 encoding and decoding, URL encoding, MD5 & SHA hash calculation, AES & DES encryption and decryption, JWT parsing, code obfuscation and base conversion for secure development.
Free online AES encrypt/decrypt tool supporting AES-CBC, AES-GCM, and AES-CTR modes with AES-128/192/256 key sizes. Includes PBKDF2-SHA256 key derivation with 100,000 iterations, real-time password strength checks, and fully client-side browser processing with no upload.
Free online tool to encode MP3, WAV, OGG, and M4A audio files into Base64 strings or Data URIs. Runs entirely in your browser — no upload — for HTML5 embedding, API payloads, and JSON config use cases.
GeekFormat's free online Base32 encoder and decoder. Fully compliant with RFC 4648 standard. Perfect for encoding TOTP/2FA secrets, DNS labels, and case-insensitive data transmission. Instantly convert text and binary to Base32 strings with zero data upload.
GeekFormat's free online Base58 encoder and decoder. Uses the standard Bitcoin alphabet (removing 0, O, I, l). Perfect for encoding/decoding crypto wallet addresses, IPFS CIDs, and URL-safe strings. Instantly convert text and binary to Base58 with zero data upload.
GeekFormat's free online Base64 Batch Decoder. Decode hundreds of Base64 strings at once with line-by-line processing. Perfect for bulk log recovery, API response debugging, and CSV data cleaning. Features automatic whitespace trimming and error tolerance for invalid lines.
GeekFormat's free online Base64 Batch Encoder. Instantly encode multiple lines of text into Base64 strings simultaneously. Perfect for generating bulk API payloads, converting CSV data, and batch processing log entries. Supports standard and URL-safe Base64 with precise newline handling.
GeekFormat's free online Base64 Cleaner. Instantly remove spaces, newlines, quotes, BOMs, and other invalid characters from Base64 strings. Perfect for fixing malformed data copied from emails, PDFs, logs, or web pages before decoding. Supports regex-based character filtering.
GeekFormat's free online Data URL and pure Base64 converter. Instantly add or remove MIME type prefixes (e.g., data:image/png;base64,). Perfect for embedding inline images in HTML/CSS, reducing HTTP requests, and preparing Base64 payloads for API transmission. Supports images, SVGs, audio, and video.
GeekFormat's free online Base64 decoder. Instantly convert Base64 strings back to readable text, binary data, or files. Perfect for debugging API responses, analyzing logs, and recovering configuration values. Supports URL-safe Base64 and automatic padding correction.
GeekFormat's free online Base64 Diff Checker. Instantly compare two Base64 strings side-by-side to find character-level differences, truncation issues, and encoding inconsistencies. Features smart whitespace ignoring and precise mismatch highlighting. Perfect for API debugging, data integrity verification, and frontend/backend consistency checks.
Free online Base64 encode/decode tool. Supports UTF-8/ASCII/ISO-8859-1, Standard/URL-Safe/MIME variants, real-time overhead, MIME 76-char RFC 2045 wrapping. Browser-local.
Free online Base64 formatting tool. Format long Base64 strings to fixed-width multi-line display. Perfect for long string readability, screenshot comparison, print layout and manual inspection. Instant formatting with one-click copy.
Online bi-directional Base64 and Hex converter supporting Hex to Base64 and Base64 to Hex. Automatically handles space-delimited input and 0x prefixes. Base64 to Hex supports lowercase/uppercase output, live conversion with error hints, copy and download results. Pure browser local processing, ideal for packet capture analysis, protocol debugging, and binary log transcoding.
Free online Base64 multi-line merge tool. Quickly merge multiple Base64 segments into a single-line string. Perfect for certificates, keys, API parameters and copy repair scenarios. Instant merge with one-click copy.
Free online MIME Base64 processor. Format Base64 with email protocol line breaks or convert to single line. Perfect for email attachments, legacy system compatibility and standard format verification. Instant processing with one-click copy.
Free online Base64 padding fixer. Add or remove trailing equal signs. Perfect for decoding errors, format inconsistencies and API compatibility troubleshooting. Instant fixing with one-click copy.
Free online Base64 split tool. Split long Base64 strings into multiple lines by specified length. Perfect for layout readability, print display and manual verification. Instant splitting with one-click copy.
Free online Base64 length statistics tool. Calculate decoded size and help detect truncation. Perfect for API debugging, file transmission and encoding integrity checking. Instant statistics with one-click view.
Free online Base64 to audio converter. Restore audio files from Base64, play online and download. Perfect for API debugging, voice data verification and encoded attachment restoration. Instant decoding with one-click playback.
Free online Base64 to file converter. Quickly restore original files and download. Perfect for attachment restoration, API debugging, config data recovery and encoded content export. Instant decoding with one-click download.
Free online Base64 to HEX converter. Convert Base64 to hexadecimal for byte stream analysis, packet capture log comparison, protocol debugging and low-level data investigation. Instant conversion with one-click copy.
Free online Base64 to image converter. Restore images from Base64 with instant preview and download. Perfect for API debugging, image attachment restoration and web resource investigation. Instant decoding with one-click preview.
Free online Base64 to text converter. Quickly restore readable plaintext. Perfect for API response viewing, log investigation, config recovery and daily decoding. Instant decoding with one-click copy.
Free online Base64 to video converter. Restore video content from Base64 with online playback and download. Perfect for API debugging, video attachment restoration and frontend resource verification. Instant decoding with one-click playback.
Free online Base64URL converter. Bidirectional conversion between standard Base64 and URL Safe Base64. Perfect for JWT, URL parameters and secure token scenarios. Instant conversion with one-click copy.
Free online Base64 format validator. Quickly determine if strings are valid, if padding is correct, and help troubleshoot decoding failures. Perfect for API debugging, log analysis and encoding verification. Instant validation with one-click view.
Free online Base85/ASCII85 encoding and decoding tool. Perfect for compact text payload conversion, protocol debugging and special character set handling. Instant conversion with one-click copy.
Free online binary converter. Convert text to binary (01 strings) and binary to text bidirectionally. Perfect for computer science learning, protocol understanding and encoding debugging. Instant conversion with one-click copy.
Free online Caesar cipher encryption and decryption tool. Set custom shift values for text encoding and decoding. Perfect for cryptography learning, CTF challenges and puzzle solving. Instant conversion with one-click copy.
Free online DES encryption and decryption tool supporting DES, 3DES and Triple DES modes. Perfect for legacy system integration, protocol debugging and cryptographic testing. Instant encryption with one-click copy.
Free online file hash calculator supporting MD5, SHA1, SHA256, SHA512 algorithms. Local chunk-based processing, file never uploaded. Verify known hash values for file integrity.
Free online converter for any file type to Base64. Supports images, PDF, certificates, archives. Browser-based processing with no server upload, ideal for API parameters, Data URI embedding, and development debugging. One-click copy.
Free online hexadecimal converter. Convert text to Hex and Hex to text bidirectionally. Perfect for packet analysis, protocol debugging, byte stream inspection and encoding learning. Instant conversion with one-click copy.
Free online HMAC signature generator and verifier supporting HMAC-SHA256/384/512/SHA1/MD5. Perfect for Stripe/GitHub/Shopify/Slack webhook signature verification. Hex/Base64/Base64URL output formats. 100% browser-based, keys never leave your device.
Free online HTML entity encoder and decoder for web escaping, rich text processing, frontend debugging and special character conversion. Instant processing with one-click copy.
Free online image to Base64 converter with Web Worker acceleration. Convert PNG, JPG, WebP, GIF, SVG, BMP, AVIF, HEIC to Base64 strings locally in your browser. Zero upload, privacy-safe, with real-time progress display.
Free online Java code obfuscator. Perfect for source code protection, example publishing, course assignments and small project distribution. Instant processing with one-click copy.
Free online JavaScript obfuscator for frontend script protection, demo code publishing, reducing source readability and lightweight code anti-copying. Instant processing with one-click copy.
Free online JWT workbench: decode, verify, and generate JSON Web Tokens in one place. Supports 13 algorithms (HS256/HS384/HS512, RS256/RS384/RS512, ES256/ES384/ES512, PS256/PS384/PS512, EdDSA). Both PEM and JWK keys. Auto-generates key pairs. Decodes exp/iat/nbf claims. 100% client-side Web Crypto — token never leaves your browser.
Free online MD5 hash calculator supporting text, file, batch line-by-line, and HMAC-MD5 modes. UTF-8/Latin1 encoding, uppercase output, 8-char grouping, chunked file hashing for large files. ⚠️ MD5 is NOT secure for passwords.
Free online Morse code translator. Convert text to Morse code and Morse code to text bidirectionally. Perfect for amateur radio, cryptography learning and fun encoding. Instant conversion with audio playback.
Free online PBKDF2 key derivation tool. Set password, salt, iteration count and output length. Perfect for protocol integration, cryptography testing and key parameter verification. Instant generation with one-click copy.
Free online PHP code obfuscator. Perfect for script distribution, source code protection, demo project publishing and basic readability reduction. Instant processing with one-click copy.
Free online Python code obfuscator. Perfect for script sharing, course assignment publishing, small tool distribution and source code readability reduction. Instant processing with one-click copy.
Free online SHA1 hash calculator for text and files. Perfect for legacy system compatibility, file verification and signature testing. Instant calculation with one-click copy.
Free SHA-256 hash generator for text, files & batches. 5 algorithms at once, Hex/Base64, drag-drop, 100% client-side. No upload.
Free online SHA512 hash calculator for text and files. Perfect for high-strength verification, download validation, security testing and signature debugging. Instant calculation with one-click copy.
Free online sensitive string comparison tool. Supports secure string comparison and common difference checking. Perfect for token verification, password comparison, signature verification and teaching demonstrations. Instant comparison with one-click view.
Free online text to Base64 converter. Quickly encode plain text, supporting Chinese, English and multi-line text. Commonly used for API parameter transmission, config conversion and debugging scenarios. Instant encoding with one-click copy.
Free online Unicode escape converter supporting \uXXXX, U+ code points and HTML entity formats. Perfect for frontend debugging, text escaping and encoding troubleshooting. Instant conversion with one-click copy.
Free online URL encode/decode tool supporting encodeURIComponent, encodeURI, RFC 3986 modes. Real-time encoding highlight, batch mode, Query Only mode. Browser-local processing.
Free online video to Base64 converter for MP4, WebM, AVI, and more. Generate raw Base64 or Data URL for HTML embedding, API payloads, testing, and debugging directly in your browser.
